HomeMy WebLinkAbout12-3-2025 Operations Committee Complete Agenda Packet
SPECIAL NOTICE
PUBLIC ATTENDANCE & PARTICIPATION AT PUBLIC MEETINGS
Operations Committee Meeting
Wednesday, December 3, 2025
5:00 p.m.
Your participation is always welcome. OC San offers several ways in which to interact during meetings. You will find information as to these opportunities below. IN-PERSON MEETING ATTENDANCE
You may attend the meeting in-person at the following location: Orange County Sanitation District Headquarters
18480 Bandilier Circle
Fountain Valley, CA 92708 ONLINE MEETING PARTICIPATION
You may join the meeting live via Teams on your computer or similar device or web browser by
using the link below: Click here to join the meeting
We suggest testing joining a Teams meeting on your device prior to the commencement of the meeting. For recommendations, general guidance on using Teams, and instructions on joining a Teams meeting, please click here.
Please mute yourself upon entry to the meeting. Please raise your hand if you wish to speak
during the public comment section of the meeting. The Clerk of the Board will call upon you by using the name you joined with. Meeting attendees are not provided the ability to make a presentation during the meeting. Please
contact the Clerk of the Board at least 48 hours prior to the meeting if you wish to present any
items. Additionally, camera feeds may be controlled by the meeting moderator to avoid inappropriate content.
HOW TO PARTICIPATE IN THE MEETING BY TELEPHONE To join the meeting from your phone: Dial (213) 279-1455
When prompted, enter the Phone Conference ID: 621 130 945#
All meeting participants may be muted during the meeting to alleviate background noise. If you are muted, please use *6 to unmute. You may also mute yourself on your device.
Please raise your hand to speak by using *5, during the public comment section of the meeting. The Clerk of the Board will call upon you by using the last 4 digits of your phone number as identification. NOTE: All attendees will be disconnected from the meeting at the beginning of Closed
Session. If you would like to return to the Open Session portion of the meeting, please login or dial-in to the Teams meeting again and wait in the Lobby for admittance. WATCH THE MEETING ONLINE
The meeting will be available for online viewing at:
https://ocsd.legistar.com/Calendar.aspx SUBMIT A COMMENT
You may submit your comments and questions in writing for consideration in advance of the meeting by using the eComment feature available online at: https://ocsd.legistar.com/Calendar.aspx or sending them to OCSanClerk@ocsan.gov with the subject line “PUBLIC COMMENT ITEM # (insert the item number relevant to your comment)”
or “PUBLIC COMMENT NON-AGENDA ITEM”.
You may also submit comments and questions for consideration during the meeting by using the eComment feature available online at: https://ocsd.legistar.com/Calendar.aspx. The eComment feature will be available for the duration of the meeting.
All written public comments will be provided to the legislative body and may be read into the record or compiled as part of the record.
For any questions and/or concerns, please contact the Clerk of the Board’s office at
714-593-7433. Thank you for your interest in OC San!
November 26, 2025 NOTICE OF REGULAR MEETING
OPERATIONS COMMITTEE ORANGE COUNTY SANITATION DISTRICT
Wednesday, December 3, 2025 – 5:00 P.M. Headquarters 18480 Bandilier Circle
Fountain Valley, CA 92708
ACCESSIBILITY FOR THE GENERAL PUBLIC Your participation is always welcome. Specific information as to how to participate in this meeting is detailed on the Special Notice attached to this agenda. In general, OC San offers several ways in which to interact during this meeting: you may participate in person, join the
meeting live via Teams on your computer or similar device or web browser, join the meeting live via telephone, view the meeting online, and/or submit comments for consideration before or during the meeting.
The Regular Meeting of the Operations Committee of the Orange County
Sanitation District will be held at the above location and in the manner indicated on Wednesday, December 3, 2025 at 5:00 p.m.
OPERATIONS COMMITTEE MEETING DATE BOARD MEETING DATE
12/03/25
01/28/26
02/04/26 02/25/26
03/04/26 03/25/26
04/01/26 04/22/26
05/06/26 05/27/26
06/03/26 06/24/26
07/01/26 07/22/26
08/26/26
09/02/26 09/23/26
10/07/26 10/28/26
11/04/26
* Meeting will be held on the third Wednesday of the month
ROLL CALL OPERATIONS COMMITTEE
Engineering and Operations & Maintenance
Meeting Date: December 3, 2025 Time: 5:00 p.m.
COMMITTEE MEMBERS (14)
OTHERS
STAFF
ORANGE COUNTY SANITATION DISTRICT Effective 10/1/2025 BOARD OF DIRECTORS Complete Roster
AGENCY/CITIES ACTIVE DIRECTOR DIRECTOR
Anaheim
Carlos A. Leon
Ryan Balius
Brea Christine Marick Cecilia Hupp
Buena Park Joyce Ahn Lamiya Hoque
Cypress VACANT Bonnie Peat
Fountain Valley Glenn Grandis Ted Bui
Fullerton Jamie Valencia Shana Charles
Garden Grove Stephanie Klopfenstein Cindy Ngoc Tran
Huntington Beach Pat Burns Gracey Van Der Mark
Irvine Melinda Liu Kathleen Treseder
La Habra Jose Medrano Rose Espinoza
La Palma Debbie Baker Vikesh Patel
Los Alamitos Jordan Nefulda Tanya Doby
Newport Beach Erik Weigand Michelle Barto
Orange Jon Dumitru John Gyllenhammer
Placentia Chad Wanke Ward Smith
Santa Ana Johnathan Ryan Hernandez Jessie Lopez
Seal Beach Lisa Landau Ben Wong
Stanton David Shawver John D. Warren
Tustin Ryan Gallagher Austin Lumbard
Villa Park Jordan Wu Kelly McBride
Sanitary/Water Districts
Costa Mesa Sanitary District Bob Ooten
Art Perry
Midway City Sanitary District Andrew Nguyen Tyler Diep
Irvine Ranch Water District John Withers Dan Ferons
County Areas
Board of Supervisors Doug Chaffee Janet Nguyen
OPERATIONS COMMITTEE
Regular Meeting Agenda
Wednesday, December 3, 2025 - 5:00 PM
Board Room
Headquarters
18480 Bandilier Circle
Fountain Valley, CA 92708
(714) 593-7433
ACCOMMODATIONS FOR THE DISABLED: If you require any special disability related accommodations,
please contact the Orange County Sanitation District (OC San) Clerk of the Board’s office at (714) 593-7433 at
least 72 hours prior to the scheduled meeting. Requests must specify the nature of the disability and the type
of accommodation requested.
AGENDA POSTING: In accordance with the requirements of California Government Code Section 54954.2, this
agenda has been posted outside OC San's Headquarters located at 18480 Bandilier Circle, Fountain Valley,
California, and on the OC San’s website at www.ocsan.gov not less than 72 hours prior to the meeting date and
time above. All public records relating to each agenda item, including those distributed less than 72 hours
prior to the meeting to a majority of the Board of Directors, are available for public inspection with the Clerk of
the Board.
AGENDA DESCRIPTION: The agenda provides a brief general description of each item of business to be
considered or discussed. The recommended action does not indicate what action will be taken. The Board of
Directors may take any action which is deemed appropriate.
MEETING RECORDING: A recording of this meeting is available within 24 hours after adjournment of the
meeting at https://ocsd.legistar.com/Calendar.aspx or by contacting the Clerk of the Board.
NOTICE TO DIRECTORS: To place items on the agenda for a Committee or Board Meeting, the item must be
submitted to the Clerk of the Board: Kelly A. Lore, MMC, (714) 593-7433 / klore@ocsan.gov at least 14 days
before the meeting. For any questions on the agenda, Board members may contact staff at:
General Manager: Rob Thompson, rthompson@ocsan.gov / (714) 593-7110
Asst. General Manager: Lorenzo Tyner, ltyner@ocsan.gov / (714) 593-7550
Director of Communications: Jennifer Cabral, jcabral@ocsan.gov / (714) 593-7581
Director of Engineering: Mike Dorman, mdorman@ocsan.gov / (714) 593-7014
Director of Environmental Services: Lan Wiborg, lwiborg@ocsan.gov / (714) 593-7450
Director of Finance: Wally Ritchie, writchie@ocsan.gov / (714) 593-7570
Director of Human Resources: Laura Maravilla, lmaravilla@ocsan.gov / (714) 593-7007
Director of Operations & Maintenance: Riaz Moinuddin, rmoinuddin@ocsan.gov / (714) 593-7269
OPERATIONS COMMITTEE Regular Meeting Agenda Wednesday, December 3, 2025
CALL TO ORDER
PLEDGE OF ALLEGIANCE
ROLL CALL AND DECLARATION OF QUORUM:
Clerk of the Board
PUBLIC COMMENTS:
Your participation is always welcome. Specific information as to how to participate in a meeting is detailed in the
Special Notice attached to this agenda. In general, OC San offers several ways in which to interact during
meetings: you may participate in person, join the meeting live via Teams on your computer or similar device or
web browser, join the meeting live via telephone, view the meeting online, and/or submit comments for
consideration before or during the meeting.
REPORTS:
The Committee Chairperson and the General Manager may present verbal reports on miscellaneous matters of
general interest to the Directors. These reports are for information only and require no action by the Directors.
CONSENT CALENDAR:
Consent Calendar Items are considered to be routine and will be enacted, by the Committee, after one motion,
without discussion. Any items withdrawn from the Consent Calendar for separate discussion will be considered in
the regular order of business.
1.2025-4616APPROVAL OF MINUTES
RECOMMENDATION:
Approve minutes of the Regular meeting of the Operations Committee held November
5, 2025.
Originator:Kelly Lore
Attachments:
2.2025-4522ENGINEERING PROGRAM CONTRACT PERFORMANCE REPORTS
RECOMMENDATION: Recommend to the Board of Directors to:
Receive and file the Engineering Program Contract Performance Report for the period
ending September 30, 2025.
Originator:Mike Dorman
Page 1 of 4
OPERATIONS COMMITTEE Regular Meeting Agenda Wednesday, December 3, 2025
Agenda Report
Engineering Program Contract Performance Report for the
period ending September 30, 2025
Attachments:
3.2025-4611ORANGE COUNTY SANITATION DISTRICT 2025 ASSET
MANAGEMENT PLAN
RECOMMENDATION: Recommend to the Board of Directors to:
Adopt the Orange County Sanitation District 2025 Asset Management Plan.
Originator:Mike Dorman
Attachments:
NON-CONSENT:
4.2025-4540SONAR INSPECTIONS & PIPELINE CLEANINGS OF INVERTED
SIPHONS AND LARGE DIAMETER PIPELINES, SPECIFICATION NO.
S-2025-695BD
RECOMMENDATION: Recommend to the Board of Directors to:
A. Approve a General Services Contract to Performance Pipeline Technologies,
Inc. (PPT) dba Sanitation Systems for Sonar Inspections & Pipeline Cleanings of
Inverted Siphons and Large Diameter Pipelines, Specification No.
S-2025-695BD, for a total amount not to exceed $1,750,000 for the period of
January 1, 2026, through December 31, 2026; with four (4) optional one-year
renewal options; and
B. Approve an annual contingency of $175,000 (10%).
Originator:Riaz Moinuddin
Attachments:
5.2025-4524SUPPLEMENTAL ENGINEERING SERVICES, Contract no.
PSA2021-002
RECOMMENDATION: Recommend to the Board of Directors to:
Authorize the General Manager to transfer funds between existing Professional
Services Agreements to provide Supplemental Engineering Services, Contract No.
PSA2021-002, with Jacobs Project Management Co. and AECOM Technical Services,
Inc., to balance contract budgets through April 2027, with no increase to the total Board
authorized not to exceed amount of $29,700,000 per agreement.
Page 2 of 4
OPERATIONS COMMITTEE Regular Meeting Agenda Wednesday, December 3, 2025
Originator:Mike Dorman
Attachments:
6.2025-4618SANTA ANA TRUNK SEWER REHABILITATION, PROJECT NO. 1-23
RECOMMENDATION: Recommend to the Board of Directors to:
Approve an Agreement for Purchase and Sale and Joint Escrow Instructions with C.J.
Segerstrom & Sons (“Segerstrom”) that defines the terms and conditions for temporary
construction easements in the amount of $509,300 for Santa Ana Trunk Sewer
Rehabilitation, Project No. 1-23, and disbursement of severance damages from an
escrow holding account with an upper limit amount of $1,009,270 for potential adverse
impacts during construction.
Originator:Mike Dorman
Attachments:
7.2025-4521A-SIDE PRIMARY CLARIFIERS REPLACEMENT AT PLANT NO. 2,
CONTRACT NO. P2-98A
RECOMMENDATION: Recommend to the Board of Directors to:
Approve a contingency increase of $4,456,235 (4%) to the existing Construction
Contract with PCL Construction, Inc., for A-Side Primary Clarifiers Replacement at
Plant No. 2, Contract No. P2-98A as part of Primary Treatment Rehabilitation at Plant
No. 2, Project No. P2-98, for a new total contingency amount of $11,140,588 (10%).
Originator:Mike Dorman
Attachments:
INFORMATION ITEMS:
8.2025-4632INFORMATION TECHNOLOGY UPDATES
RECOMMENDATION:
Information Item.
Originator:Wally Ritchie
Attachments:
Page 3 of 4
OPERATIONS COMMITTEE Regular Meeting Agenda Wednesday, December 3, 2025
DEPARTMENT HEAD REPORTS:
CLOSED SESSION:
None.
OTHER BUSINESS AND COMMUNICATIONS OR SUPPLEMENTAL AGENDA ITEMS, IF
ANY:
BOARD OF DIRECTORS INITIATED ITEMS FOR A FUTURE MEETING:
At this time Directors may request staff to place an item on a future agenda.
ADJOURNMENT:
Adjourn the meeting until the Regular Meeting of the Operations Committee on February 4,
2026 at 5:00 p.m.
AFFIDAVIT OF PUBLICATION:
I hereby certify under penalty of perjury and as required by the State of California, Government Code §
54954.2(a), that the foregoing Agenda was posted online at www.ocsan.gov, in the lobby, and outside the main
door of Orange County Sanitation District Headquarters at 18480 Bandilier Cir. Fountain Valley, CA 92708 not
less than 72 hours prior to the meeting date and time above. All public records relating to each agenda item,
including those distributed less than 72 hours prior to the meeting to a majority of the Board of Directors, are
available for public inspection with the Clerk of the Board.
/s/ Kelly A. Lore, MMC
Clerk of the Board
November 26, 2025
Page 4 of 4
OPERATIONS COMMITTEE
Agenda Report
Headquarters
18480 Bandilier Circle
Fountain Valley, CA 92708
(714) 593-7433
File #:2025-4616 Agenda Date:12/3/2025 Agenda Item No:1.
FROM:Robert Thompson, General Manager
Originator: Kelly A. Lore, Clerk of the Board
SUBJECT:
APPROVAL OF MINUTES
GENERAL MANAGER'S RECOMMENDATION
RECOMMENDATION:
Approve minutes of the Regular meeting of the Operations Committee held November 5, 2025.
BACKGROUND
In accordance with the Board of Directors Rules of Procedure,an accurate record of each meeting
will be provided to the Directors for subsequent approval at the following meeting.
RELEVANT STANDARDS
·Resolution No. OC SAN 24-09
ATTACHMENT
The following attachment(s)may be viewed on-line at the OC San website (www.ocsan.gov)with the complete agenda
package:
·November 5, 2025 Operations Committee meeting minutes
Orange County Sanitation District Printed on 11/18/2025Page 1 of 1
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Orange County Sanitation District
Minutes for the
OPERATIONS COMMITTEE
Wednesday, November 5, 2025
5:00 PM
Board Room
Headquarters
18480 Bandilier Circle
Fountain Valley, CA 92708
(714) 593-7433
CALL TO ORDER
A regular meeting of the Operations Committee of the Orange County Sanitation District was
called to order by Committee Vice Chairman Bob Ooten on Wednesday, November 5, 2025
at 5:00 p.m. in the Orange County Sanitation District Headquarters. Vice Chair Ooten led the
Pledge of Allegiance.
ROLL CALL AND DECLARATION OF QUORUM:
Assistant Clerk of the Board Jackie Castro declared a quorum present as follows:
PRESENT:Joyce Ahn, Debbie Baker, Doug Chaffee, Jon Dumitru, Ryan
Gallagher, Lisa Landau, Tom Lindsey, Robert Ooten, Bonnie Peat
(Alternate) and Gracey Van Der Mark (Alternate)
ABSENT:Johnathan Ryan Hernandez, Stephanie Klopfenstein, Carlos Leon
and Jamie Valencia
Lorenzo Tyner, Assistant General Manager; Mike Dorman, Director of
Engineering; Riaz Moinuddin, Director of Operations and Maintenance; Wally Ritchie, Director
of Finance; Lan Wiborg, Director of Environmental Services; Jackie Castro, Assistant Clerk of
the Board; Pegah Behravan; Jon Bradley; Morty Caparas; Sam Choi; Daisy Covarrubias; Raul
Cuellar; Don Cutler; Martin Dix; Natasha Dubrovski; Justin Fenton; Al Garcia; David Haug;
Mark Kawamoto; Marianne Kleine; Tom Meregillano; Tania Moore; Nick Oswald; Victoria
Pilko; Becky Polcyn; Giti Radvar; Valerie Ratto; Sammady Yi; Thomas Vu; Kevin Work; and
Ruth Zintzun were present in the Board Room.
OTHERS PRESENT: Mal Richardson, General Counsel, was present in the Board Room.
Anni Larkins, Jacobs, and Alternate Director Art Perry, Costa Mesa Sanitary District, were
present virtually.
PUBLIC COMMENTS:
None.
REPORTS:
Vice Chair Ooten informed the Committee that OC San’s Administrative Offices will be closed
on Tuesday, November 11, in observance of Veterans Day, and on Thursday and Friday,
November 27 and 28, for the Thanksgiving holiday. He also announced that this month’s
Board of Directors meeting will take place one week earlier, on Wednesday, November 19.
Assistant General Manager Lorenzo Tyner did not provide a report.
Page 1 of 7
OPERATIONS COMMITTEE Minutes November 5, 2025
CONSENT CALENDAR:
1. APPROVAL OF MINUTES 2025-4567
Originator: Kelly Lore
MOVED, SECONDED, AND DULY CARRIED TO:
Approve minutes of the Regular meeting of the Operations Committee held October 1,
2025.
AYES:Joyce Ahn, Debbie Baker, Jon Dumitru, Ryan Gallagher, Lisa
Landau, Tom Lindsey, Robert Ooten, Bonnie Peat (Alternate) and
Gracey Van Der Mark (Alternate)
NOES:None
ABSENT:Doug Chaffee, Johnathan Ryan Hernandez, Stephanie Klopfenstein,
Carlos Leon and Jamie Valencia
ABSTENTIONS:None
2. INLET GATE ASSEMBLY REPLACEMENT AT PLANT NO. 2 2025-4536
Originator: Riaz Moinuddin
MOVED, SECONDED, AND DULY CARRIED TO:
A. Approve a Sole Source Purchase Order to Misco Water for the purchase of one
Fontaine-Aquanox inlet gate assembly at Plant No. 2, for a total amount not to
exceed $178,261, plus applicable sales tax; and
B. Approve a contingency of $17,826 (10%).
AYES:Joyce Ahn, Debbie Baker, Jon Dumitru, Ryan Gallagher, Lisa
Landau, Tom Lindsey, Robert Ooten, Bonnie Peat (Alternate) and
Gracey Van Der Mark (Alternate)
NOES:None
ABSENT:Doug Chaffee, Johnathan Ryan Hernandez, Stephanie Klopfenstein,
Carlos Leon and Jamie Valencia
ABSTENTIONS:None
3. QUARTERLY ODOR COMPLAINT REPORT 2025-4550
Originator: Riaz Moinuddin
MOVED, SECONDED, AND DULY CARRIED TO:
Receive and file the Fiscal Year 2025-26 First Quarter Odor Complaint Report.
Page 2 of 7
OPERATIONS COMMITTEE Minutes November 5, 2025
AYES:Joyce Ahn, Debbie Baker, Jon Dumitru, Ryan Gallagher, Lisa
Landau, Tom Lindsey, Robert Ooten, Bonnie Peat (Alternate) and
Gracey Van Der Mark (Alternate)
NOES:None
ABSENT:Doug Chaffee, Johnathan Ryan Hernandez, Stephanie Klopfenstein,
Carlos Leon and Jamie Valencia
ABSTENTIONS:None
4. UTILITY TUNNEL RELIABILITY STUDY AT PLANT NO. 1 AND NO. 2,
PROJECT NO. PS24-03
2025-4551
Originator: Mike Dorman
A. Approve a Professional Services Agreement with Kleinfelder, Inc., to provide
engineering services for the Utility Tunnel Reliability Study at Plant No. 1 and
No. 2, Project No. PS24-03, for an amount not to exceed $961,548; and
B. Approve a contingency of $96,155 (10%).
AYES:Joyce Ahn, Debbie Baker, Jon Dumitru, Ryan Gallagher, Lisa
Landau, Tom Lindsey, Robert Ooten, Bonnie Peat (Alternate) and
Gracey Van Der Mark (Alternate)
NOES:None
ABSENT:Doug Chaffee, Johnathan Ryan Hernandez, Stephanie Klopfenstein,
Carlos Leon and Jamie Valencia
ABSTENTIONS:None
NON-CONSENT:
5. INDUSTRIAL CLEANING SERVICES (RE-BID), SPECIFICATION NO.
S-2025-660BD-R
2025-4537
Originator: Riaz Moinuddin
Page 3 of 7
OPERATIONS COMMITTEE Minutes November 5, 2025
A. Approve a General Services Contract to Performance Pipeline Technologies
Inc., dba Sanitation Systems for Industrial Cleaning Services, Specification No.
S-2025-660BD-R, for a total amount not to exceed $3,521,625 for the period of
December 1, 2025, through November 30, 2026, with four (4) optional one-year
renewals; and
B. Approve an annual contingency of $352,163 (10%).
AYES:Joyce Ahn, Debbie Baker, Jon Dumitru, Ryan Gallagher, Lisa
Landau, Tom Lindsey, Robert Ooten, Bonnie Peat (Alternate) and
Gracey Van Der Mark (Alternate)
NOES:None
ABSENT:Doug Chaffee, Johnathan Ryan Hernandez, Stephanie Klopfenstein,
Carlos Leon and Jamie Valencia
ABSTENTIONS:None
6. ON-CALL MAINTENANCE SERVICES FOR ELECTRICAL
EQUIPMENT, SPECIFICATION NO. S-2025-684BD
2025-4539
Originator: Riaz Moinuddin
A. Approve a General Services Contract to IPS PowerServe to provide On-Call
Maintenance Services for Electrical Equipment, Specification No.
S-2025-684BD, for an annual total amount not to exceed $4,998,418 for a
one-year period with four (4) optional one-year renewals; and
B. Approve an annual contingency of $499,841 (10%).
AYES:Joyce Ahn, Debbie Baker, Jon Dumitru, Ryan Gallagher, Lisa
Landau, Tom Lindsey, Robert Ooten, Bonnie Peat (Alternate) and
Gracey Van Der Mark (Alternate)
NOES:None
ABSENT:Doug Chaffee, Johnathan Ryan Hernandez, Stephanie Klopfenstein,
Carlos Leon and Jamie Valencia
ABSTENTIONS:None
7. PROGRESSIVE DESIGN BUILD PROJECT AWARD RESOLUTION 2025-4578
Originator: Mike Dorman
Director of Engineering Mike Dorman provided a verbal report of the item.
Page 4 of 7
OPERATIONS COMMITTEE Minutes November 5, 2025
MOVED, SECONDED, AND DULY CARRIED TO: Recommend to the Board of
Directors to:
Adopt Resolution No. OC SAN 25-XX titled: “A Resolution of the Board of Directors of
the Orange County Sanitation District delegating authority to the General Manager to
execute amendments to Progressive Design-Build Contracts.”
AYES:Joyce Ahn, Debbie Baker, Jon Dumitru, Ryan Gallagher, Lisa
Landau, Tom Lindsey, Robert Ooten, Bonnie Peat (Alternate) and
Gracey Van Der Mark (Alternate)
NOES:None
ABSENT:Doug Chaffee, Johnathan Ryan Hernandez, Stephanie Klopfenstein,
Carlos Leon and Jamie Valencia
ABSTENTIONS:None
Director Doug Chaffee arrived at the meeting at 5:17 p.m.
8. OCEAN OUTFALLS REHABILITATION, PROJECT NO. J-137 2023-3182
Originator: Mike Dorman
A. Approve a project budget increase of $10,500,000 for Ocean Outfalls
Rehabilitation, Project No. J-137, for a new total project budget of $110,500,000;
B. Award a Progressive Design-Build Contract with Aqueos Corporation to provide
Phase 1 progressive design-build services for Ocean Outfalls Rehabilitation,
Project No. J-137, for an amount not to exceed $16,130,000; and
C. Approve an upper limit for this Contract of $94,193,000, which includes
contingency.
AYES:Joyce Ahn, Debbie Baker, Doug Chaffee, Jon Dumitru, Ryan
Gallagher, Lisa Landau, Tom Lindsey, Robert Ooten, Bonnie Peat
(Alternate) and Gracey Van Der Mark (Alternate)
NOES:None
ABSENT:Johnathan Ryan Hernandez, Stephanie Klopfenstein, Carlos Leon
and Jamie Valencia
ABSTENTIONS:None
Page 5 of 7
OPERATIONS COMMITTEE Minutes November 5, 2025
9. SANTA ANA TRUNK SEWER REHABILITATION, PROJECT NO. 1-23 2025-4185
Originator: Mike Dorman
A. Receive and file Bid Tabulation and Recommendation for Santa Ana Trunk
Sewer Rehabilitation, Project No. 1-23;
B. Approve a project budget increase of $9,600,000 for Santa Ana Trunk Sewer
Rehabilitation, Project No. 1-23, for a new total project budget of $65,400,000;
C. Award a Construction Contract Agreement to Steve P. Rados, Inc., for Santa
Ana Trunk Sewer Rehabilitation, Project No. 1-23, for a total amount not to
exceed $44,787,000; and
D. Approve a contingency of $4,478,700 (10%).
AYES:Joyce Ahn, Debbie Baker, Doug Chaffee, Jon Dumitru, Ryan
Gallagher, Lisa Landau, Tom Lindsey, Robert Ooten, Bonnie Peat
(Alternate) and Gracey Van Der Mark (Alternate)
NOES:None
ABSENT:Johnathan Ryan Hernandez, Stephanie Klopfenstein, Carlos Leon
and Jamie Valencia
ABSTENTIONS:None
10. SANTA ANA TRUNK SEWER REHABILITATION, PROJECT NO. 1-23 2025-4186
Originator: Mike Dorman
Page 6 of 7
OPERATIONS COMMITTEE Minutes November 5, 2025
A. Approve a Professional Construction Services Agreement with Stantec
Consulting Services, Inc. to provide construction support services for Santa Ana
Trunk Sewer Rehabilitation, Project No. 1-23, for a total amount not to exceed
$2,700,000; and
B. Approve a contingency of $270,000 (10%).
AYES:Joyce Ahn, Debbie Baker, Doug Chaffee, Jon Dumitru, Ryan
Gallagher, Lisa Landau, Tom Lindsey, Robert Ooten, Bonnie Peat
(Alternate) and Gracey Van Der Mark (Alternate)
NOES:None
ABSENT:Johnathan Ryan Hernandez, Stephanie Klopfenstein, Carlos Leon
and Jamie Valencia
ABSTENTIONS:None
INFORMATION ITEMS:
None.
DEPARTMENT HEAD REPORTS:
None.
CLOSED SESSION:
None.
OTHER BUSINESS AND COMMUNICATIONS OR SUPPLEMENTAL AGENDA ITEMS, IF
ANY:
None.
BOARD OF DIRECTORS INITIATED ITEMS FOR A FUTURE MEETING:
None.
ADJOURNMENT:
Vice Chair Ooten declared the meeting adjourned at 6:01 p.m. to the next Regular Operations
Committee meeting to be held on Wednesday, December 3, 2025 at 5:00 p.m.
Submitted by:
_____________________
Jackie Castro, CMC
Assistant Clerk of the Board
Page 7 of 7
OPERATIONS COMMITTEE
Agenda Report
Headquarters
18480 Bandilier Circle
Fountain Valley, CA 92708
(714) 593-7433
File #:2025-4522 Agenda Date:12/3/2025 Agenda Item No:2.
FROM:Robert Thompson, General Manager
Originator: Mike Dorman, Director of Engineering
SUBJECT:
ENGINEERING PROGRAM CONTRACT PERFORMANCE REPORTS
GENERAL MANAGER'S RECOMMENDATION
RECOMMENDATION: Recommend to the Board of Directors to:
Receive and file the Engineering Program Contract Performance Report for the period ending
September 30, 2025.
BACKGROUND
The Engineering Program involves awarding and managing multiple construction and consulting
contracts.In 2008,the Orange County Sanitation District (OC San)Board of Directors began
authorizing contingencies along with construction and consulting contracts,allowing the General
Manager to approve construction change orders and amendments to consulting contracts up to the
amount of the authorized contingency.This practice reduces administrative costs,expedites
resolution of project issues that arise,helps avoid contractor delay claims,and facilitates efficient
management of many contracts.
The Engineering Program Contract Performance Report summarizes construction and consulting
contract performance and activities for the quarter ending September 30,2025.This report is
updated quarterly and includes a summary of the General Manager approved contract contingencies
among other key performance indicators.With this release,the report format has been significantly
updated with a new look and feel designed to make the information easier to read and interpret.
ATTACHMENT
The following attachment(s)may be viewed on-line at the OC San website (www.ocsan.gov)with the complete agenda
package:
·Engineering Program Contract Performance Report for the period ending September 30,
2025.
MD:lb
Orange County Sanitation District Printed on 11/25/2025Page 1 of 1
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OPERATIONS COMMITTEE
Agenda Report
Headquarters
18480 Bandilier Circle
Fountain Valley, CA 92708
(714) 593-7433
File #:2025-4611 Agenda Date:12/3/2025 Agenda Item No:3.
FROM:Robert Thompson, General Manager
Originator: Mike Dorman, Director of Engineering
SUBJECT:
ORANGE COUNTY SANITATION DISTRICT 2025 ASSET MANAGEMENT PLAN
GENERAL MANAGER'S RECOMMENDATION
RECOMMENDATION: Recommend to the Board of Directors to:
Adopt the Orange County Sanitation District 2025 Asset Management Plan.
BACKGROUND
Development of an annual Asset Management Plan is one of the ongoing initiatives in the Orange
County Sanitation District’s (OC San)Strategic Plan.The Asset Management Plan documents the
condition of all critical OC San assets and identifies and prioritizes the short to long-term plan for
asset maintenance, rehabilitation, and replacement.
RELEVANT STANDARDS
·Protect OC San assets
·Sustain 1, 5, 20-year planning horizons
·Ensure the public’s money is wisely spent
·Maintain a proactive asset management program
PROBLEM
N/A
PROPOSED SOLUTION
N/A
TIMING CONCERNS
The Asset Management Plan is updated annually and should be adopted by December 31,2025 to
support the development of the Fiscal Year 2026/27 and 2027/28 Budget.
Orange County Sanitation District Printed on 11/25/2025Page 1 of 2
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File #:2025-4611 Agenda Date:12/3/2025 Agenda Item No:3.
RAMIFICATIONS OF NOT TAKING ACTION
N/A
PRIOR COMMITTEE/BOARD ACTIONS
N/A
ADDITIONAL INFORMATION
OC San’s 2022 National Pollutant Discharge Elimination System permit requires the submittal of an
Asset Management Plan every five years.To satisfy this requirement,OC San transmits its annual
Asset Management Plan to regulators in January following adoption by the Board of Directors.
CEQA
N/A
FINANCIAL CONSIDERATIONS
N/A
ATTACHMENT
The following attachment(s)may be viewed on-line at the OC San website (www.ocsan.gov)with the complete agenda
package:
·OC San 2025 Asset Management Plan
JF:op
Orange County Sanitation District Printed on 11/25/2025Page 2 of 2
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2025
AssetManagement Plan
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Acronyms and Abbreviations .................................................................................................................... v
Executive Summary .............................................................................................................................. ES-1
Asset Management Plan Intent and Purpose ............................................................................ ES-1
Overview of OC San’s Infrastructure ......................................................................................... ES-1
State of OC San’s Infrastructure ................................................................................................ ES-2
Program Monitoring and Improvements ................................................................................... ES-11
Budgetary Considerations ........................................................................................................ ES-12
1 Introduction .................................................................................................................................... 1
1.1 Overview of OC San’s Infrastructure .................................................................................. 3
1.1.1 Collection System .................................................................................................. 5
1.1.2 Reclamation Plant System ..................................................................................... 6
1.1.3 Outfall System ........................................................................................................ 7
1.2 Asset Management Organization ........................................................................................ 8
1.2.1 Major Assets .......................................................................................................... 9
1.2.2 Remaining Useful Life .......................................................................................... 10
1.2.3 Asset Life Cycle Curve D-I-P-F ............................................................................ 10
1.2.4 Predictive Maintenance ........................................................................................ 10
1.2.5 Preventive and Corrective Maintenance .............................................................. 12
1.3 Reference .......................................................................................................................... 13
2 State of OC San’s Infrastructure ................................................................................................ 14
2.1 Area Asset Management Summaries ............................................................................... 14
2.2 Area Asset Management Summaries List......................................................................... 19
2.2.1 Plant No. 1 Preliminary Treatment ....................................................................... 23
2.2.2 Plant No. 1 Primary Treatment ............................................................................ 25
2.2.3 Plant No. 1 Secondary Treatment – Activated Sludge ........................................ 27
2.2.4 Plant No. 1 Secondary Treatment – Trickling Filters ........................................... 29
2.2.5 Plant No. 1 Interplant ........................................................................................... 31
2.2.6 Plant No. 1 Solids Handling – Digesters .............................................................. 35
2.2.7 Plant No. 1 Solids Handling – Remaining Facilities ............................................. 37
2.2.8 Plant No. 1 Central Generation ............................................................................ 39
2.2.9 Plant No. 1 Utilities ............................................................................................... 42
2.2.10 Plant No. 1 Electrical Distribution ......................................................................... 46
2.2.11 Plant No. 1 Occupied and Power Buildings ......................................................... 48
2.2.12 Plant No. 2 Preliminary Treatment ....................................................................... 53
2.2.13 Plant No. 2 Primary Treatment ............................................................................ 55
2.2.14 Plant No. 2 Secondary Treatment – Activated Sludge and Oxygen
Facility .................................................................................................................. 57
2.2.15 Plant No. 2 Secondary Treatment – Trickling Filters and Solids Contact ............ 59
2.2.16 Plant No. 2 Effluent Disposal ............................................................................... 61
2.2.17 Plant No. 2 Solids Handling – Digesters .............................................................. 63
2.2.18 Plant No. 2 Solids Handling – Remaining Facilities ............................................. 65
2.2.19 Plant No. 2 Central Generation ............................................................................ 67
2.2.20 Plant No. 2 Utilities ............................................................................................... 70
2.2.21 Plant No. 2 Electrical Distribution ......................................................................... 74
2.2.22 Plant No. 2 Occupied and Power Buildings ......................................................... 76
2.2.23 Collection System Pump Station and Force Main Asset Management
Summaries ........................................................................................................... 78
2.2.24 Collection System Pipeline and Manhole Asset Management Summaries ......... 82
2025 Asset Management Plan
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3 Program Monitoring and Improvements .................................................................................. 115
3.1 Program Monitoring......................................................................................................... 115
3.2 Program Metrics .............................................................................................................. 115
3.2.1 Proactive Maintenance Percent ......................................................................... 115
3.2.2 Break-in Percent ................................................................................................ 117
3.2.3 Maintenance Costs and Labor Hours ................................................................ 121
3.2.4 Collections Level of Service Results .................................................................. 125
3.3 Maintenance Planning .................................................................................................... 126
3.3.1 Projected Maintenance Costs ............................................................................ 127
3.4 Asset Management Program Accomplishments ............................................................. 127
3.4.1 Condition Assessment Program ........................................................................ 127
3.4.2 Collection System Assets .................................................................................. 129
3.4.3 Treatment Plant Projects and Planning Studies ................................................ 131
3.5 Asset Management Program Improvement Opportunities ............................................. 134
4 Budgetary Considerations ........................................................................................................ 137
4.1 Capital Improvement Expenditures ................................................................................. 137
4.2 Maintenance Expenditures ............................................................................................. 138
4.2.1 Five-Year Historical Maintenance Expenditures ................................................ 138
4.2.2 Three-Year Look-Ahead Maintenance Expenditures......................................... 140
List of Figures
Figure 1-1. OC San’s Service Area ............................................................................................................... 4
Figure 1-2. Groups with Roles in Asset Management .................................................................................. 8
Figure 1-3. D-I-P-F Curve and PdM Summary ........................................................................................... 11
Figure 2-1. Plant No. 1 Process Area – Remaining Useful Life Score Map ............................................... 15
Figure 2-2. Plant No. 2 Process Area – Remaining Useful Life Score Map ............................................... 16
Figure 2-3. Collection System Pump Stations and Force Mains – Remaining Useful Life Score Map ...... 17
Figure 2-4. Collection System Pipelines and Manholes – Remaining Useful Life Score Map ................... 18
Figure 2-5. Area Asset Management Summary Structure .......................................................................... 20
Figure 3-1. Electrical Emergency Work Orders ........................................................................................ 120
Figure 3-2. Mechanical Emergency Work Orders ..................................................................................... 120
Figure 3-3. Graph of Maintenance Costs (Materials and Services) at Plant No. 1 ................................... 121
Figure 3-4. Graph of Maintenance Labor Hours at Plant No. 1 ................................................................ 122
Figure 3-5. Graph of Maintenance Costs (Materials and Services) at Plant No. 2 ................................... 123
Figure 3-6. Graph of Maintenance Labor Hours at Plant No. 2 ................................................................ 123
Figure 3-7. Graph of Pump Station Maintenance Costs (Materials and Services) ................................... 124
Figure 3-8. Graph of Pump Station Maintenance Labor Hours ................................................................ 125
Figure 3-9. PM Workorder Breakdown by Both Craft and Frequency ...................................................... 127
Figure 3-10. Condition Assessment Contract Expenditures ..................................................................... 128
Figure 4-1. 20-Year CIP Outlay ................................................................................................................ 137
Figure 4-2. FY 2025–2026 CIP Outlay by Process – $289.0 Million ........................................................ 138
Figure 4-3. Five-Year Historical Maintenance Costs for Treatment Plants .............................................. 139
Figure 4-4. Five-Year Historical Maintenance Costs for Collection System ............................................. 139
2025 Asset Management Plan
iii
List of Tables
Table 1-1. Linkage between Asset Management Plan and Other Planning Activities .................................. 2
Table 1-2. Pump Station Design Capacity .................................................................................................... 5
Table 1-3. Plant No. 1 Dry/Wet Weather Design Capacity ........................................................................... 6
Table 1-4. Plant No. 2 Dry/Wet Weather Design Capacity ........................................................................... 7
Table 1-5. Remaining Useful Life Score versus Remaining Useful Life ..................................................... 10
Table 2-1. Plant No. 1 Remaining Useful Life ............................................................................................. 15
Table 2-2. Plant No. 2 Remaining Useful Life ............................................................................................. 16
Table 2-3. Collection System Pump Station and Force Main Remaining Useful Life ................................. 17
Table 2-4. Collection System Pipeline and Manhole Remaining Useful Life .............................................. 18
Table 3-1. Proactive Maintenance Percent for Reclamation Plant No. 1 ................................................. 116
Table 3-2. Proactive Maintenance Percent for Reclamation Plant No. 2 ................................................. 116
Table 3-3. Proactive Maintenance Percent for Pump Stations ................................................................. 117
Table 3-4. Annual Average Proactive Work for Process Areas ................................................................ 117
Table 3-5. Break-in Percent for Reclamation Plant No. 1 ......................................................................... 118
Table 3-6. Break-in Percent for Reclamation Plant No. 2 ......................................................................... 118
Table 3-7. Break-in Percent for Pump Stations ........................................................................................ 119
Table 3-8. Annual Average of Break-in Percentages for OC San Facilities ............................................. 119
Table 3-9. Collections Level of Service Results........................................................................................ 126
Table 3-10. Projected Maintenance Costs Next Fiscal Year .................................................................... 127
Table 4-1. Projected Annual Expenditures ............................................................................................... 141
List of Appendices
Appendix A: Plant No. 1 Process Areas Map
Appendix B: Plant No. 1 Process Diagram
Appendix C: Plant No. 2 Process Areas Map
Appendix D: Plant No. 2 Process Diagram
Appendix E: Asset Management KPI Supplemental Information
2025 Asset Management Plan
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Acronyms and Abbreviations
Ø Diameter
® Registered Trademark
ADWF Average Dry Weather Flow
AM Asset Management
AMP Asset Management Plan
AS Activated Sludge
AS1 Activated Sludge 1
AS2 Activated Sludge 2
BI Business Intelligence
Board Orange County Sanitation District Board
of Directors
CCTV Closed-Circuit Television
CEMS Continuous Emissions Monitoring
System
CenGen Central Generation Facility
Chem. Chemical Injection System
CIP Capital Improvement Program
CIPP Cured-in-Place Pipe
CM Corrective Maintenance
CWPS City Water Pump Station
DAFT Dissolved Air Flotation Thickener
DC Distribution Center
DIP Ductile Iron Pipe
EAM Enterprise Asset Management
EBDB East Basin Distribution Box
EJB Effluent Junction Box
Elec. Electrical
EMP Energy and Digester Gas Master Plan
EPSA Effluent Pump Station Annex
FE Facilities Engineering
FeCl3 Ferric Chloride
FY Fiscal Year
GIS Geographic Information System
GWRS Groundwater Replenishment System
H2S Hydrogen Sulfide
HCl Hydrochloric Acid
HDPE High-Density Polyethylene
HP Horsepower
HVAC Heating, Ventilation, and Air Conditioning
IDGP Interplant Digester Gas Pipeline
IPE Interplant Trunk E
JB Junction Box
KPI Key Performance Indicator
kV Kilovolt(s)
LoF Likelihood of Failure
LOX Liquid Oxygen
LPDG Low-Pressure Digester Gas
M&D Metering and Diversion
MCC Motor Control Center
MGD Million Gallons per Day
mi Mile
ML Mixed Liquor
MP Maintenance Project
MSP Main Sewage Pump
N/A Not Applicable
NaOH Sodium Hydroxide
NASSCO National Association of Sewer Service
Companies
No. Number
NPDES National Pollutant Discharge Elimination
System
NSC North Scrubber Complex
NTP Notice to Proceed
O&M Operations and Maintenance
OC San Orange County Sanitation District
OCWD Orange County Water District
OEM Original Equipment Manufacturer
OOBS Ocean Outfall Booster Station
OSHA Occupational Safety and Health
Administration
OXI Oxidizer
P1 Plant No. 1
P2 Plant No. 2
PB Power Building
PdM Predictive Maintenance
PE Primary Effluent
PEDB Primary Effluent Distribution Box
PEDB-1 Primary Effluent Distribution Box 1
PEDB-2 Primary Effluent Distribution Box 2
PEJB Primary Effluent Junction Box
PEJB-1 Primary Effluent Junction Box 1
PEJB-2 Primary Effluent Junction Box 2
PEPS Primary Effluent Pump Station
Phys. Physical Injection System
PISB Primary Influent Splitter Box
PLC Programmable Logic Controller
PM Preventive Maintenance
PRN Project Request Number
PS Pump Station
PSB Primary Sedimentation Basin
PVC Polyvinyl Chloride
PWWF Peak Wet Weather Flow
RAS Return-Activated Sludge
RCM Reliability-Centered Maintenance
RIO Remote Input/Output
ROCCS Regional Odor and Corrosion Control
System
RSS Return Secondary Sludge
2025 Asset Management Plan
vi
RUL Remaining Useful Life
SALS Steve Anderson Lift Station
SARI Santa Ana River Interceptor
SBF Sludge Blending Facility
SBS Sodium Bisulfite System
SC Secondary Clarifier
SCE Southern California Edison
SCR Selective Catalytic Reduction
SC/SR Solids Contact/Solids Reaeration
SE Secondary Effluent
SEJB Secondary Effluent Junction Box
SPF Standby Power Facility
SR Secondary Return
SRR Sludge Reaeration Reactor
SSC South Scrubber Complex
SSO Sanitary Sewer Overflow
T&D Thickening and Dewatering
TBD To Be Determined
TF Trickling Filter
TFPS Trickling Filter Pump Station
TF/SC Trickling Filter/Solids Contact
TFSE Trickling Filter Secondary Effluent
TFSEJB-2 Trickling Filter Secondary Effluent
Junction Box 2
TWAS Thickened Waste-Activated Sludge
UPS Uninterruptible Power Supply
V Volt(s)
VCP Vitrified Clay Pipe
VDC Volt(s) of Direct Current
VFD Variable Frequency Drive
WAS Waste-Activated Sludge
WSS Waste Secondary Sludge
WSSPS Waste Sidestream Pump Station
2025 Asset Management Plan
ES-1
Executive Summary
Asset Management Plan Intent and Purpose
The Orange County Sanitation District (OC San) Asset Management Plan (AMP) is a tactical
document that captures OC San’s organizational structure, maintenance plans, and capital
improvement plan implementation on an annual basis. This document will continue to change in
content and structure to reflect OC San’s efforts for continual improvement and to meet the
needs of stakeholders.
Safe and reliable infrastructure and process equipment are essential to providing industry-
leading wastewater collection and treatment, while achieving OC San’s mission and vision
statements. OC San manages asset reliability, mitigates risk, and ensures the quality of its
delivered services according to the following mission statement of the Asset Management
Program:
OC San will know the condition of assets we own and will have a plan to operate and
maintain these assets to deliver the required level of service, at the lowest life cycle cost,
with an acceptable level of risk.
Overview of OC San’s Infrastructure
OC San owns and operates wastewater collection system infrastructure, as well as two
resource recovery and wastewater treatment facilities located in Fountain Valley and Huntington
Beach. Its collection system infrastructure includes over 380 miles of regional sewer pipelines
and 15 pump stations throughout the OC San service area (Figure ES-1). Wastewater is
conveyed to Reclamation Plant Number (No.) 1 in Fountain Valley and Reclamation Plant No. 2
in Huntington Beach. These facilities treat an average daily wastewater flow of 184 million
gallons per day, serving approximately 2.6 million people in central and northwest Orange
County, California.
Figure ES-1. OC San’s Service Area
2025 Asset Management Plan
ES-2
State of OC San’s Infrastructure
The following Area Asset Management (AM) Summary tables and condition score maps provide
a high-level overview of OC San’s facilities. These overviews are organized as follows:
• Plant No. 1 (Figure ES-2 and Table ES-1)
• Plant No. 2 (Figure ES-3 and Table ES-2)
• Collection System – Pump Stations and Force Mains (Figure ES-4 and Table ES-3)
• Collection System – Pipelines and Manholes (Figure ES-5 and Table ES-4)
The summaries generally include the following fields:
• Area No.: Number that corresponds to the plant asset area. Plant No. 1 asset areas are
numbers 10 to 19, and Plant No. 2 asset areas are numbers 20 to 29.
• Area Name: Name of asset area.
• Average Remaining Useful Life (RUL) Score: Estimated average RUL score for each
discipline (civil, structural, mechanical, electrical, and instrumentation) or area based on
an average of the RUL scores provided in the detailed Area AM Summaries.
• Percentage of RUL Scores with 4s or 5s: Percentage of major assets with a RUL of 10
years or less.
2025 Asset Management Plan
ES-3
AREA ASSET MANAGEMENT SUMMARY – PLANT NO. 1 OVERVIEW
Note: Areas 14 and 19 are excluded from the map. The colored process areas reflect the average RUL score as shown on the
respective table.
OCWD = Orange County Water District
Figure ES-2. Plant No. 1 Process Area – Remaining Useful Life Score Map
2025 Asset Management Plan
ES-4
Table ES-1. Plant No. 1 Remaining Useful Life
Ar
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a
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Area Name
Average Remaining Useful Life Score
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10 Preliminary Treatment 3 3 4 5 5 5 67%
11 Primary Treatment - Basins (1–5) 5 4 5 5 4 5 79%
11 Primary Treatment - Basins (6–
31) 4 3 4 4 4 4 42%
12 Secondary Treatment - Activated
Sludge 1 (AS1) 3 4 5 5 5 4 73%
12 Secondary Treatment - Activated
Sludge 2 (AS2) 1 1 2 3 3 2 3%
12 Secondary Treatment - Trickling
Filter 1 1 3 3 4 3 26%
14 Interplanta 2 2 2 1 2 15%
15 Solids Handling - Digesters 2 2 3 3 3 3 16%
15 Solids Handling – Thickening &
Dewatering (T&D) Facilities 1 1 2 3 3 2 12%
15 Solids Handling - Gas Handlinga 3 3 3 4 3 44%
16 Central Generation (CenGen)a 1 3 4 4 3 37%
17 Utilities 3 1 4 4 3 3 23%
18 Electrical Distributiona 3 3 47%
19 Occupied Buildings Refer to Area 19 Asset Management Summary
Plant No. 1 Total 38%
Please see the comprehensive Acronyms and Abbreviations list for definitions.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
a White box with diagonal line indicates there are no assets assigned to this discipline within this process area.
2025 Asset Management Plan
ES-5
AREA ASSET MANAGEMENT SUMMARY – PLANT NO. 2 OVERVIEW
Note: Area 29 is excluded from the map. The colored process areas reflect the average RUL score as shown on the respective
table.
OCWD = Orange County Water District
Figure ES-3. Plant No. 2 Process Area – Remaining Useful Life Score Map
2025 Asset Management Plan
ES-6
Table ES-2. Plant No. 2 Remaining Useful Life
Ar
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a
N
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Area Name
Average Remaining Useful Life Score
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20 Preliminary Treatment 1 1 3 4 3 3 12%
21 Primary Treatment - A Side 5 5 5 4 4 5 100%
21 Primary Treatment - B & C Side 4 3 4 3 4 4 34%
22 Secondary Treatment - Activated
Sludge (AS) 3 3 3 4 3 3 28%
22 Secondary Treatment - Dissolved
Air Flotation Thickener (DAFT) 4 1 3 2 3 2 17%
22 Secondary Treatment - Trickling
Filter 2 1 2 2 3 2 10%
23 Oxygen Facility 3 3 3 4 4 3 100%
24 Effluent Disposal 2 2 3 4 4 3 35%
25 Solids Handling - Digesters 4 4 3 3 3 3 69%
25 Solids Handling - Facilities 2 1 2 2 3 2 5%
25 Solids Handling - Gas Handlinga 3 4 4 4 4 50%
26 Central Generation (CenGen) a 1 3 4 4 3 39%
27 Utilities 3 1 3 4 3 3 20%
28 Electrical Distributiona 4 4 57%
29 Occupied Buildings Refer to Area 29 Asset Management Summary
Plant No. 2 Total 41%
Please see the comprehensive Acronyms and Abbreviations list for definitions.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
a White box with diagonal line indicates there are no assets assigned to this discipline within this process area.
2025 Asset Management Plan
ES-7
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM PUMP
STATION AND FORCE MAIN OVERVIEW
Note: Not all pump station force mains are shown on this map. Only longer force mains are shown. Scores for force mains come
from actual force main scores in Chapter 2. The colored pump stations reflect the average RUL score as shown on the respective
table.
Figure ES-4. Collection System Pump Stations and Force Mains – Remaining Useful Life Score Map
2025 Asset Management Plan
ES-8
Table ES-3. Collection System Pump Station and Force Main Remaining Useful Life
Pump Station
Average Remaining Useful Life Score
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15th Street 3 4 4 3 3 3 27%
A Street 3 4 4 3 3 3 25%
Bay Bridge 5 4 5 4 3 5 85%
Bitter Point 2 2 3 3 4 3 23%
College 4 3 3 2 3 3 25%
Crystal Cove 4 4 4 3 3 4 42%
Edinger 5 4 3 4 5 4 64%
Lido 4 4 4 4 3 4 75%
MacArthur 1 3 4 5 4 4 73%
Main Street 5 2 4 4 4 4 46%
Rocky Point 3 3 3 3 4 3 23%
Slater 4 3 4 3 4 4 38%
Seal Beach 1 4 5 4 5 5 83%
Westside 5 3 3 3 4 3 31%
Yorba Lindab 5 4 4 4 4 4 82%
Newport Force Mainsa 2 2 0%
Total 49%
Please see the comprehensive Acronyms and Abbreviations list for definitions.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
a White box with diagonal line indicates there are no assets assigned to this discipline within this process area.
b The station is being decommissioned.
2025 Asset Management Plan
ES-9
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM PIPELINE
AND MANHOLE OVERVIEW
Note: Only pipelines are shown on this map for clarity. Refer to Collection System Manhole Remaining Useful Life Score Map in
Section 2.2, Area Asset Management Summaries List.
Figure ES-5. Collection System Pipelines and Manholes – Remaining Useful Life Score Map
2025 Asset Management Plan
ES-10
Table ES-4. Collection System Pipeline and Manhole Remaining Useful Life
Trunklines
No. of Pipes
with RUL Score
of 4 or 5
Miles of Pipes
with
RUL Score of 4
or 5
Percentage of
Pipes with RUL
Score
of 4 or 5
(by length)
No. of Manholes
with RUL Score
of 4 or 5
Percentage of
Manholes with
RUL Score
of 4 or 5
Baker-Main 74 4.9 12% — a — a
Bushard 11 1.4 6% 3 1%
Coast 16 1.1 10% 3 2%
Euclid 13 0.7 2% 69 16%
Interplantb 0 0.0 0% 0 0%
Knott 37 2.6 4% 94 12%
Miller-Holder 22 1.6 5% 43 16%
Newhope 26 1.7 6% 82 23%
Newport 20 1.0 4% 30 8%
Santa Ana River
Interceptor 66 3.0 6% 160 28%
Sunflower 15 0.5 1% — a — a
Talbert 77 5.9 70% — a — a
Total 377 24.2 7% 484 11%
Please see the comprehensive Acronyms and Abbreviations list for definitions.
a Only trunklines with greater than 50% manhole inspections completed are included in this table and in the Asset Management
System Summaries.
b Interplant Trunk in this table refers only to Interplant Trunkline E (IPE) assets. Interplant Trunkline assets are included with Knott
Trunkline in its Asset Management System Summary.
2025 Asset Management Plan
ES-11
Program Monitoring and Improvements
OC San has implemented a set of key performance indicators (KPIs) that directly align with the
objectives of its Asset Management Program. These measures provide a clear view of progress,
benefits realized, and areas for continued improvement.
The KPIs include:
• Proactive maintenance percent
• Break-in percent
• Maintenance costs and labor hours
• Collections level of service results
Table ES-5 summarizes these KPIs for fiscal year (FY) 2024–2025.
Table ES-5. Asset Management Program KPIs for FY 2024–2025
Process Area
Average Proactive
Work for Process
Areas
Average of Break-
in Percent Maintenance Cost Maintenance
Labor Hours
Plant 1 33% 25% $6,508,668 41,439
Plant 2 37% 20% $7,642,194 41,010
Pump Stations 53% 25% $698,245 7,248
Description Level of Service Target FY 2024–2025
Sanitary Sewer Overflow per 100 miles < 2.1 0
Number of Odor Complaints 12 9
Miles of Pipeline Inspected by Closed-
Circuit Television (CCTV)
70 71.1
Number of Manholes Inspected by CCTV 880 246
OC San’s Asset Management Program also measures its effectiveness by the progress and
results delivered. The following highlights summarize key accomplishments achieved during the
last fiscal year:
• Condition Assessment Program: The Asset Management Team completed
approximately 38 condition assessments during the last fiscal year, spending nearly $1.1
million. Annual expenditures on condition assessments have been increasing year over
year, illustrating Asset Management’s dedication to knowing the current condition of OC
San’s major assets and performing incidental repairs following inspections to increase
asset life and reliability.
• Collection System Asset Management Activities: Proactive efforts are underway to
address isolated and severe defects in the gravity collection system by grouping similar
asset issues for efficient execution of solutions. Services are being procured for cleaning
and sonar inspections of inverted siphons and large-diameter pipelines. OC San also
continues to improve the use of the recently implemented Info360 Asset software by
refining risk and decision models over time and also moving to high-definition video for all
new inspections. Three pump station valve replacement projects have also been
completed, with two more projects in progress. A more robust program for force main
inspections has also been implemented.
• Treatment Plant Projects: Several key projects were completed including improvements
to central generation engines, Dissolved Air Flotation Thickeners (DAFTs) A and D,
various pumps, Trickling Filter Clarifier B, truck loading scales, and short-term
improvements to the A-Side Primary Clarifiers and Grit Basin cables. Ongoing efforts are
2025 Asset Management Plan
ES-12
addressing critical needs such as variable frequency drive replacements, clarifier
rehabilitation, digester gas dryer and heat exchanger moisture separator replacements
and instrumentation upgrades, pump overhauls, and additional engine overhauls at the
Central Generation Facility.
• Planning Studies: Three major planning studies—Central Generation Digital Twin,
Energy and Digester Gas Master Plan, and On-site Oxygen Generation Feasibility Study
at Plant No. 2—were successfully completed to guide future reliability and sustainability
initiatives.
Budgetary Considerations
The AMP focuses on documenting short- to long-term planning of maintenance and capital
improvement projects to support effective budget development and sustainable operations for
robust planning purposes.
The FY 2025–2026 Budget Update, the second year of the 2-year budget adopted in June 2024
and updated in June 2025, includes updates to the 20-year Capital Improvement Program (CIP)
outlay. Figure ES-6 includes current and projected CIP projects. The green bars show the
current proposed CIP projects while the yellow bars show the future CIP projects, which are
reevaluated and adjusted annually to reflect any new information.
Figure ES-6. 20-Year CIP Outlay
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1 Introduction
The Orange County Sanitation District (OC San) Board
of Directors (Board) developed its mission and vision
statements to clearly communicate OC San’s purpose to
its stakeholders and to articulate OC San’s
organizational objectives. The vision supports the
mission by expressing what OC San strives to achieve
now and into the future.
Through improved and robust asset management practices, OC San is better able to coordinate
and plan actions to ensure that all facilities and infrastructure are safe and reliable, and meet
the rigorous level of service embodied by its mission statement.
In November 2019, OC San’s strategic planning process resulted in the creation of an asset
management policy and asset management initiatives. Collectively, the policy and initiatives
guide OC San’s asset management strategy.
Asset Management Policy
OC San’s asset management policy states:
OC San will assess and manage the collection system and treatment plant
systems and assets to improve resilience and reliability while lowering life cycle
costs. This will be accomplished through adaptive operation, coordinated
maintenance and condition assessment, and planned capital investment. Staff
will balance maintenance, refurbishment, and replacement strategies to
maximize useful life, system availability, and efficiency.
Asset Management Initiatives
The asset management policy calls for the following initiatives:
• Create an annual Asset Management Plan (AMP) documenting the condition of the
collection system and treatment plants, and upcoming maintenance and Capital
Improvement Program (CIP) projects.
• Coordinate the efforts of Operations, Collections, Mechanical Maintenance, Electrical
Maintenance, Instrument Maintenance, and Engineering through process teams to ensure
that OC San’s resources are focused on the high-priority work functions.
OUR VISION
Orange County Sanitation District will be a leader in:
⧫ Providing reliable, responsive, and affordable services in line with customer needs and
expectations.
⧫ Protecting public health and the environment utilizing all practical and effective means
for wastewater, energy, and solids resource recovery.
⧫ Continually seeking efficiencies to ensure that the public’s money is well spent.
⧫ Communicating our mission and strategies with those we serve and all other
stakeholders.
⧫ Partnering with others to benefit our customers, this region, and our industry.
⧫ Creating the best possible workforce in terms of safety, productivity, customer service,
and training.
OUR MISSION
To protect public health and
the environment by providing
effective wastewater collection,
treatment, and recycling.
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• Maintain a 20-year forecast of all CIP projects needed to maintain or upgrade OC San’s
assets on a prioritized risk basis to establish rate structures.
The AMP is a living document that describes evolving operational strategies, maintenance,
refurbishment plans and adaptations, and CIP implementation; it is revised annually through the
budgeting process. The information included in the AMP encompasses the breadth of
information needed to successfully align the capital and operational planning activities
necessary to meet the Asset Management Program objectives. The key objectives that are built
into the Asset Management Program include the following:
• Take a proactive approach to repair, rehabilitate, and replace assets.
• Ensure assets are reliable and operating when needed.
• Minimize unplanned outages and equipment downtime.
• Manage risks associated with asset or service impairment through asset performance
optimization.
• Develop cost-effective management strategies for the long term.
• Strive to implement world-class asset management strategies through continual
improvement in OC San’s asset management practices.
The AMP is a key component of OC
San’s overall planning activities. It
aligns with OC San’s Strategic Plan and
the Facilities Master Plan (inclusive of
the projects identified therein), while
identifying potential and new
opportunities that may require funding in
the budget development process.
Table 1-1 describes the relationship of
the AMP with the other planning
activities.
Table 1-1. Linkage between Asset Management Plan and Other Planning Activities
Planning
Activity Description
Planning
Horizon
Update
Cycle
Strategic
Plan
Defines the strategic initiatives to be pursued by OC San and
provides a basis for long-term financial, capital, and operating
planning. The AMP aligns with Strategic Plan goals and objectives.
5- to 10-year Biennial
Facilities
Master
Plan
Identifies long-term capital improvement plans to address treatment
and collection system infrastructure improvement needs. Projects
identified in the Facilities Master Plan are incorporated into the AMP
and refined as appropriate.
20-year Varies
Asset
Management
Plan
Documents the overall condition of treatment and collection system
major assets and plans to address key condition and performance
issues to ensure assets meet OC San’s levels of service.
1-year
5-year
10-year and
greater
Annual
Budget
Book
Lays out the framework of OC San’s activities and serves as a source
of information for its Board of Directors, rate payers, and employees.
It includes operational, capital, and debt service expenditures
necessary to support its mission and to execute the Strategic Plan
adopted by its Board of Directors. The AMP identifies new
operational, maintenance, and capital improvement activities for
consideration during the budget development process.
2-year Annual
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1.1 Overview of OC San’s Infrastructure
OC San is responsible for providing wastewater collection, treatment, and recycling services to
over 2.6 million people in central and northwest Orange County, California. OC San’s two
resource recovery and wastewater treatment facilities treated an average daily wastewater flow
of 184 million gallons per day (MGD) from residential, commercial, and industrial sources in
fiscal year (FY) 2024–2025.
In addition to its plant facilities, OC San owns and operates wastewater collection system
infrastructure. The OC San collection system infrastructure includes over 380 miles of regional
trunk sewer pipelines and 15 pump stations throughout its service area (Figure 1-1).
Wastewater is conveyed via the collection system to Reclamation Plant Number (No.) 1 in
Fountain Valley, and Reclamation Plant No. 2 in Huntington Beach, where resource recovery
and wastewater treatment take place.
OC San’s reclamation plants operate under a regulatory permit from the California Regional
Water Quality Control Board and the U.S. Environmental Protection Agency. This authority is
established through the National Pollutant Discharge Elimination System (NPDES), which
permits the discharge of treated wastewater through an ocean outfall system to the Pacific
Ocean. While some treated water is released 5 miles offshore through a deep-water ocean
outfall system, most is recovered and delivered to the Orange County Water District (OCWD).
OCWD further treats OC San’s effluent using the Groundwater Replenishment System (GWRS),
which improves the effluent water quality to drinking water standards for groundwater recharge
and irrigation purposes. The following sections briefly describe the key systems under OC San’s
management.
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Figure 1-1. OC San’s Service Area
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1.1.1 Collection System
OC San’s collection system serves as a regional conveyance system, collecting and conveying
wastewater flows from 20 cities, 4 special districts, and various unincorporated areas, and
accommodates dry weather urban runoff. OC San’s more than 380 miles of collection system
pipelines and 15 pump stations are spread throughout northwest Orange County and include
363 miles of gravity pipelines, 21 miles of force mains, 4 miles of inverted siphons, and more
than 4,450 manhole structures.
OC San has worked with member city and agency staff to understand future development plans
and flow estimates and has collected historical inflow and infiltration rates during wet weather
events to ensure adequate flow-carrying capability exists in each trunk sewer system. OC San
also factors in the effects of drought and lower domestic water usage rates to make sure the
sewers operate properly at low-flow rates. Table 1-2 summarizes the design capacities of the
pump stations; these design capacities reflect the maximum capacity of each station when all
duty pumps are on and standby pumps are off.
Table 1-2. Pump Station Design Capacity
Pump Station Location
Design Capacity
(MGD)
Bitter Point Newport Beach 39.4
Rocky Point Newport Beach 6.5
Bay Bridge Newport Beach 18.2
Crystal Cove Newport Beach 0.8
Lido Newport Beach 5.5
15th Street Newport Beach 2.6
A Street Newport Beach 1.4
MacArthur Newport Beach 3.6
Main Street Irvine 60
Seal Beach Seal Beach 31.7
Slater Huntington Beach 28.8
Westside Los Alamitos 21.6
Edinger Huntington Beach 2.5
College Avenue Costa Mesa 8
Yorba Linda Fullerton 11.5
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1.1.2 Reclamation Plant System
OC San owns and operates two wastewater treatment plants that serve two primary functions:
treatment and reclamation.
Reclamation Plant No. 1 (Plant No. 1) is located in the City of Fountain Valley,
approximately 4 miles inland of the Pacific Ocean and adjacent to the Santa Ana River. Influent
wastewater entering Plant No. 1 passes through a flow metering and diversion (M&D) structure,
mechanical bar screens, grit chambers, and primary basins, before going to one of two air-
activated sludge (AS) processes, or trickling filters (TFs), and secondary clarifiers. Thereafter,
secondary effluent is diverted to OCWD’s facilities for tertiary treatment before reuse. For a
summary of Plant No. 1 design capacity, refer to Table 1-3. For a map of the facilities and more
detailed understanding of how Plant No. 1 treatment processes work together, refer to
Appendices A and B, respectively.
Solids treatment at Plant No. 1 includes co-thickening of primary and secondary sludge,
followed by an anaerobic digestion process and centrifuge dewatering of digested sludge to
produce Class B biosolids. Digester gas produced at Plant No. 1 is collected, cleaned,
compressed, and transferred via a closed piping system to the Central Power Generation
Facility as a renewable fuel for energy generation, and is interconnected to the Plant No. 2
facility. In addition, Plant No. 1 includes facilities for odor control and chemical addition to
support the aforementioned processes.
Reclamation Plant No. 2 (Plant No. 2) is located in the City of Huntington Beach, adjacent
to the Santa Ana River and east of Pacific Coast Highway. Raw sewage flow entering Plant
No. 2 passes through a flow-metering structure, mechanical bar screens, and grit removal
chambers. Flow then passes through primary basins before being split between the High-Purity
Oxygen-AS or the Trickling Filter/Solids Contact (TF/SC) secondary treatment process.
With the construction of the GWRS final expansion and associated projects completed in 2023,
Plant No. 2 is able to operate in a separated stream mode, splitting non-reclaimable and
reclaimable streams. Additionally, both Plant No. 2 reclaimable secondary effluent and Plant
No. 1 secondary effluent are diverting most of their treated water to OCWD for advanced
treatment and groundwater injection. For a summary of Plant No. 2 design capacity, refer to
Table 1-4. For a map of the facilities and more detailed understanding of how Plant No. 2
treatment processes work together, refer to Appendices C and D, respectively.
Solids treatment at Plant No. 2 includes dissolved air flotation thickening of secondary sludge,
anaerobic sludge digestion of primary and thickened secondary sludge, and centrifuge
dewatering of digested sludge to produce Class B biosolids. Plant No. 2 also has facilities for
odor control and chemical addition. Digester gas produced at Plant No. 2 is collected,
compressed, cleaned, and distributed to the Central Power Generation System as a renewable
fuel for energy generation. Compressed digester gas can be shared between the plants through
the interplant digester gas line.
Table 1-3. Plant No. 1 Dry/Wet Weather Design Capacity
Treatment
Processes
ADWF
Capacity
(MGD)
PWWF
Capacity
(MGD) Notes
Headworks 220 320 After MSP replacement by P1-105, with four duty
pumps in service and one standby
Primary 153 352 With one circular and two rectangular primary
clarifiers out of service
Secondary 182 345 With all basins, TFs, and clarifiers in service
Please see the comprehensive Acronyms and Abbreviations list for definitions.
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Table 1-4. Plant No. 2 Dry/Wet Weather Design Capacity
Treatment
Processes
ADWF
Capacity
(MGD)
PWWF
Capacity
(MGD) Notes
Headworks 144 322 Three large and two small duty pumps in service,
and one large pump and one small pump on
standby
Primary 156 312 With one primary clarifier out of service
Secondary 150 317 With all basins, TFs, and clarifiers in service
Please see the comprehensive Acronyms and Abbreviations list for definitions.
1.1.3 Outfall System
The ocean outfall system includes three discharge structures: 120-inch Outfall (Discharge Point
001), 78-inch Outfall (Discharge Point 002), and the Santa Ana River Emergency Overflow
Weirs (Discharge Point 003).
120-inch Outfall (Discharge Point 001) serves as the primary ocean outfall, discharging
treated wastewater approximately 5 miles offshore at a depth of approximately 200 feet. It
began service in 1971. Based on the findings of a comprehensive assessment study completed
in 2022, a rehabilitation project is in progress to ensure the outfall’s reliability for many years to
come.
78-inch Outfall (Discharge Point 002) serves as an emergency outfall and primary
backup to the 120-inch Outfall, discharging treated wastewater more than a mile offshore at a
depth of approximately 65 feet. It was originally constructed in 1954 and was later modified in
1965. OC San’s NPDES permit specifies that this outfall can be used only in the case of an
emergency or during planned maintenance activities.
Santa Ana River Emergency Overflow Weirs (Discharge Point 003) is a system
with two overflow weirs at Plant No. 2 that discharge directly to the Santa Ana River. These
weirs are for extreme emergency use only and serve as a secondary backup to the primary
outfall facilities, ensuring the safety and welfare of the community at large.
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1.2 Asset Management Organization
Asset management is an essential part of OC San’s mission to deliver safe, economical, and
reliable wastewater treatment services. Every part of the OC San organization is involved in
some aspect of managing assets and ensuring that assets are designed, constructed, operated,
and maintained to reliably deliver the required level of service to its customers. Through a
collaborative effort, each OC San group plays an important role in ensuring that the individual
asset management initiatives and projects are properly executed (Figure 1-2).
Figure 1-2. Groups with Roles in Asset Management
• Operations operates and monitors assets and infrastructure that convey, treat, process,
and recover resources.
• Maintenance performs proactive, corrective, and restorative activities in a planned setting
to maintain asset reliability and capacity, collectively referred to as reliability-centered
maintenance (RCM). The goals of RCM involve implementing well-coordinated
maintenance strategies to ensure OC San’s assets will operate at the required level of
service.
• Planning provides engineering support for short- and long-term management of assets,
while working toward asset management objectives. The Asset Management Group works
in the Planning Division of Engineering, interfacing with Operations, Maintenance, and the
other Engineering divisions on a regular basis.
Asset
management
activities are
performed
throughout
OC San
Operations
Maintenance
Information Technology
Planning
Project
Management Office
Design
Construction Management
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• The Project Management Office manages the design and construction of new facilities
and the rehabilitation of older facilities. The Small Projects Delivery Team within the
Project Management Office is responsible for the execution of facility maintenance, repair,
and replacement projects.
• Design ensures projects and assets are designed in accordance with engineering
standards and codes and meet stakeholder needs.
• Construction Management ensures assets are constructed in accordance with contract
documents.
• Information Technology supports and maintains the digital platforms and systems that
support asset management functions, ensuring data integrity, system integration, and
consistent, reliable information across the organization.
To fulfill OC San’s commitment to ratepayers to provide safe and reliable services, the Asset
Management Program is structured to align the Engineering Department and Operations and
Maintenance (O&M) Departments. OC San’s Asset Management Group, within Engineering’s
Planning Division, consists of nine Asset Engineers assigned to the various process areas in the
treatment plants and collection system, plus an engineer specializing in corrosion control who
leads condition assessments and coating projects. Staff are responsible for understanding the
key issues or concerns related to the condition and performance of OC San’s assets and for
developing and coordinating plans or strategies to ensure that the assets operate properly and
reliably.
The Asset Engineers, each assigned to their respective process or collection system area(s),
work closely with associated O&M team members to stay current with the operation, condition,
process, and/or maintenance-related issues within their assigned areas. The Operations Team
focuses on the optimal utilization of assets to extend equipment life and minimize energy and
chemical use, while meeting all regulatory and level-of-service requirements. The Maintenance
Team is committed to ensuring installed assets are in a ready state for Operations that
optimizes planned maintenance and minimizes costs and downtime.
Collectively, the area Asset Engineer and O&M work together to reach the goal of providing the
required level of service at the lowest life cycle cost with an acceptable level of risk. This
strategy involves a significant investment in internal coordination but ensures that OC San is
properly assessing risks, solving problems, and processing deficiencies in a timely manner.
1.2.1 Major Assets
A “major asset” is defined as any asset that is specifically tracked, monitored, or recorded for
the purposes of fulfilling the policies and initiatives of the AM Program. A major asset can be
composed of other assets. For example, a clarifier can be called a major asset, yet it is
composed of other assets such as pumps, drive mechanisms, motors, etc. Similarly, for buried
assets, a system of pipe segments known as a trunkline can be called a major asset. The Asset
Engineer uses the term “major asset” to differentiate and communicate for purposes related to
the execution of the AMP, which includes developing short-, medium-, and long-term plans for
each process area. “Major assets” are sometimes simply referred to as “assets” for simplicity.
Here are some examples of tests that are used to differentiate between a major asset and
merely an asset:
• Does it perform a substantial role in the collection, treatment, or effluent process?
• Does its direct use impact level of service and quality metrics?
• Does it require a predictive, proactive, or preventive maintenance (PM) service approach
to facilitate its management?
• Does its failure cause significant disruption to the overall process or system? Is its
reliability essential to the plant's operational efficiency?
• Does its malfunction negatively impact key performance metrics or targets?
• Could its failure compromise safety protocols or create safety hazards?
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• Does it play a direct role in maintaining regulatory permit compliance?
There are other variations of the definition of an “asset” outside of the AMP. These variations
are typically minor and unique to the identifying group based on specific goals and objectives.
For example, some variations in the definition exist between those defined in the AMP and by
the Maintenance and Finance Departments. The Maintenance definition of an asset serves the
Maintenance Department goals and objectives by providing a means to properly track and
maintain those items using the Enterprise Asset Management (EAM) system, Maximo®.
Furthermore, the AMP definition of an “asset” deviates from the Financial Management
Division’s definition, as it is based on accounting practices for tax purposes. In summary, the
Asset Management, Maintenance, and Finance groups look at and define assets somewhat
differently and it is important to identify those similarities and differences to maintain alignment
among the groups to achieve OC San’s common goals and objectives.
1.2.2 Remaining Useful Life
An asset’s Remaining Useful Life (RUL) is the estimated time remaining until the asset cannot
be reliably maintained and fails to provide the required level of service. Failure includes
structural failure as well as operational/service failure. The Asset Management Program
converts RUL into RUL scoring for each asset on a scale of 1 to 5 per Table 1-5.
Table 1-5. Remaining Useful Life Score versus Remaining Useful Life
RUL Score 5 4 3 2 1
RUL < 5 years 5–10 years 11–15 years 16–20 years > 20 years
Asset Engineers determine the RUL of major assets based on a variety of factors:
• Expected RUL from original installation, repair, or rehabilitation date(s) and regular
maintenance activities based on historical data (when available)
• Condition assessments, including manned or remote inspections as applicable
• O&M field observations and recommendations
• Performance, maintenance, and reliability history, including condition monitoring reports
from the Maintenance Reliability Group
• Regular field inspections of asset areas
• Engineering judgment
1.2.3 Asset Life Cycle Curve D-I-P-F
The ‘P-F’ curve is a concept that identifies the intervals between Potential Failure ‘P’ and
Functional Failure ‘F’ and was first introduced by Stan Nowland and Howard Heap in 1978. The
curve has since been extended to include Design ‘D’ and Installation ‘I’ by Doug Plucknette and
is called the ‘D-I-P-F’ curve, also known as the Asset Life Cycle Curve (Figure 1-3).
At OC San, it is understood that detecting potential failure alone is not enough to consider a
program a success. For each detected potential failure, it is also important to determine the root
cause of the failure and know how to eliminate the cause. OC San’s goal is to ensure all asset
stakeholders are working together to move to the left of the ‘P-F’ curve into the ‘I-P’ precision
domain with proper installation, commissioning, precision alignment, and balancing through
good work processes, procedures, and practices. Ultimately, the goal is to apply the lessons
learned to future designs to improve asset reliability and resistance to failure and minimize
maintenance costs.
1.2.4 Predictive Maintenance
In asset management, Predictive Maintenance (PdM) strategies are used to regularly monitor
the condition of assets. OC San’s Maintenance Reliability Group implements the PdM Program,
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which collects data through condition monitoring to provide real-time performance evaluation of
assets. PdM is a proactive approach that minimizes unexpected breakdowns and extends the
mean time between failures. It reduces not only the likelihood of failure but also overall
equipment downtime and repair costs by monitoring the actual equipment health through
quantifiable means and performing advanced analysis and failure detection to identify condition
degradation in its early phase (Figure 1-3).
In addition, when sudden changes or variations in the process manifest, they are often found
during the regular Maintenance Reliability rounds as part of the group’s everyday work. The
ability to monitor equipment lends itself to helping Maintenance optimize intervals between
corrective repairs, minimizing the number and cost of unscheduled repairs created by machine-
train failures, and improving equipment reliability.
Figure 1-3. D-I-P-F Curve and PdM Summary
1.2.4.1 Mechanical Discipline
The mechanical discipline involves variance trending of the PdM test results, which includes the
following:
• Vibration analysis to measure imbalance in rotating equipment
• Oil analysis to predict lubricant and equipment degradation
• Airborne ultrasound
• Structure ultrasound
• Infrared thermograph to detect hot spots
• Iris™ motion amplification camera (measures deflection and displacement)
In addition to PdM activities for mechanical equipment, OC San also uses laser alignment
techniques to enhance rotating machinery accuracy to increase the machinery’s operating life
span.
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1.2.4.2 Electrical Discipline
The electrical PdM Program includes the following tests:
• Oil analysis for transformers
• Ultrasound to detect arcing
• Infrared thermography to detect hot spots
• Circuit breakers and protective relays testing
• Motor circuit analysis for large and small motors to determine motor stator health, broken
rotor bars, deteriorating motor connections, and any impending failure trends
• Medium-voltage feeder cable testing to determine the health of cables and insulation
1.2.4.3 Civil Discipline
The civil aspect of PdM includes the following:
• Closed-circuit television (CCTV) assessments of buried pipe and manhole structures
• Sonar assessments of inverted siphons
• Structural sampling, testing, and analysis of concrete assets
• Water-level monitoring and debris accumulation prediction in the collection system
1.2.5 Preventive and Corrective Maintenance
Beyond the advanced PdM strategies, OC San also performs time- and cycle-based PM and
corrective maintenance (CM) activities. It is these activities that, if well implemented, greatly
extend the life of the assets. Recognizing the importance of these efforts, OC San has
dedicated the following two groups of skilled individuals to reinforce and sustain the relevant
maintenance activities:
• The PM Optimization Group is tasked with conducting in-depth assessments to optimize
PM strategies for new and existing assets and to establish maintenance approaches for
assets installed by projects prior to beneficial occupancy. The PM Optimization Program
tracks, maintains, and manages assets throughout their life cycles, from design,
construction, commissioning, beneficial occupancy, operation, and maintenance to the
eventual decommissioning or replacement of those assets. This ensures that the asset life
cycle is maximized with the lowest risk of process failure by achieving the intended
reliability, at the lowest possible cost, and maximizing equipment availability.
• The Maintenance Planning Group drives reliability and effectiveness in the craft-based
maintenance work groups they support by preparing and scheduling ready-to-execute
work with appropriate resources such as tools, materials, labor, and job plans.
Maintenance specialists in this group are responsible for managing blanket maintenance
service contracts, planning and scheduling maintenance activities, optimizing PM activities
within Maximo® (which includes fine-tuning job plans based on input received from field
staff, leads, maintenance supervisors, and engineers), and coordinating complex
maintenance activities involving shutdowns and outages.
OC San’s PM and CM programs are staffed to address the long-term reliable performance of
civil, mechanical, electrical, and instrumentation assets. PM and CM activities specific to these
disciplines are an integral part of OC San’s maintenance program. The following lists provide
examples of tasks performed; however, they are not meant to be inclusive of all maintenance
responsibilities.
1.2.5.1 Mechanical, Electrical, and Instrumentation Disciplines
PM and CM activities include:
• Valve and gate exercising program comprising more than 264 PM tasks for over
1,650 valves and gates throughout both plants and collection system
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• Equipment rotation program to ensure equipment wear is predictable
• Adjusting and aligning mechanical equipment
• Rebuilding and regular testing of equipment
• Changing of lubricants and filters
• Cleaning and torque verification of electrical equipment
• Testing electrical power distribution equipment
• Testing circuit breakers and protective relays
• Calibrating sensors and meters
1.2.5.2 Civil Discipline
PM and CM activities include:
• Cleaning of civil facilities and pipelines (collection system)
• Chemical conditioning of wastewater to reduce corrosion and control odors
• Minor repairs
• Application and repair of coatings
• Maintenance and testing of cathodic protection systems
1.3 Reference
Society for Maintenance and Reliability Professionals (SMRP). 2013. Maintenance and
Reliability Best Practices. 4th Edition.
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2 State of OC San’s Infrastructure
The Area AM Summaries provide a list of major assets and are intended to summarize
information on those assets, including condition, average RULs, key issues under further
investigation, and plans to address performance and reliability issues of these assets over the
1-, 5-, and 10-year planning horizons, as well as CIP projects planned over the next 10 to 15
years. Over the course of the year, Asset Engineers present one or more of the Area AM
Summaries to the OC San Managers who make up the AM Council. All the process areas,
pump stations, and collection systems are presented with feedback and questions being
provided by the AM Council. The Area AM Summaries are updated as needed and incorporated
into the AMP, which is published annually.
2.1 Area Asset Management Summaries
The Area AM Summaries provide a high-level overview of the assets in the areas contained in
Section 2.2. The RUL scores are an average of the RUL scores for the discipline within that
process area. The summaries are for the following components:
• Plant No. 1
• Plant No. 2
• Collection System – Pump Stations and Force Mains
• Collection System – Pipelines and Manholes
The Area Asset Management Summaries include area maps (Figure 2-1 through Figure 2-4)
showing the general layout of the process areas or collection system, and tables (Table 2-1
through Table 2-4) with the following fields:
• Area No.: Number that corresponds to individual plant asset areas. Plant No. 1 asset
areas are numbered 10 to 19, and Plant No. 2 asset areas are numbered 20 to 29.
• Area Name: Name of asset area.
• Average RUL Score: Estimated average RUL score for each discipline (civil, structural,
mechanical, electrical, and instrumentation) or area based on an average of the RUL
scores provided in the detailed Area AM Summaries.
• Percentage of RUL Scores with 4s or 5s: Percentage of major assets with a RUL of 10
years or less.
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AREA ASSET MANAGEMENT SUMMARY – PLANT NO. 1 OVERVIEW
Figure 2-1. Plant No. 1 Process Area – Remaining Useful Life Score Map
Note: Areas 14 and 19 are excluded from the map. The colored process areas reflect the average RUL score as shown on the respective table.
Table 2-1. Plant No. 1 Remaining Useful Life
Ar
e
a
N
o
.
Area Name
Average Remaining Useful Life Score
Pe
r
c
e
n
t
a
g
e
o
f
R
U
L
S
c
o
r
e
s
wi
t
h
4
s
o
r
5
s
Ci
v
i
l
St
r
u
c
t
u
r
a
l
Me
c
h
a
n
i
c
a
l
El
e
c
t
r
i
c
a
l
In
s
t
r
u
m
e
n
t
a
t
i
o
n
Al
l
A
s
s
e
t
s
10 Preliminary Treatment 3 3 4 5 5 5 67%
11 Primary Treatment - Basins (1–5) 5 4 5 5 4 5 79%
11 Primary Treatment - Basins (6–31) 4 3 4 4 4 4 42%
12 Secondary Treatment – Activated
Sludge 1 (AS1) 3 4 5 5 5 4 73%
12 Secondary Treatment – Activated
Sludge 2 (AS2) 1 1 2 3 3 2 3%
12 Secondary Treatment – Trickling
Filter 1 1 3 3 4 3 26%
14 Interplanta 2 2 2 1 2 15%
15 Solids Handling – Digesters 2 2 3 3 3 3 16%
15 Solids Handling – Thickening &
Dewatering (T&D) Facilities 1 1 2 3 3 2 12%
15 Solids Handling – Gas Handlinga 3 3 3 4 3 44%
16 Central Generation (CenGen)a 1 3 4 4 3 37%
17 Utilities 3 1 4 4 3 3 23%
18 Electrical Distributiona 3 3 47%
19 Occupied Buildings Refer to Area 19 Asset Management Summary
Plant No. 1 Total 38%
Please see the comprehensive Acronyms and Abbreviations list for definitions.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
a White box with diagonal line indicates there are no assets assigned to this discipline within this process area.
2025 Asset Management Plan
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AREA ASSET MANAGEMENT SUMMARY – PLANT NO. 2 OVERVIEW
Figure 2-2. Plant No. 2 Process Area – Remaining Useful Life Score Map
Note: Area 29 is excluded from the map. The colored process areas reflect the average RUL score as shown on the respective table.
Table 2-2. Plant No. 2 Remaining Useful Life
Ar
e
a
N
o
.
Area Name
Average Remaining Useful Life Score
Pe
r
c
e
n
t
a
g
e
o
f
R
U
L
S
c
o
r
e
s
wi
t
h
4
s
o
r
5
s
Ci
v
i
l
St
r
u
c
t
u
r
a
l
Me
c
h
a
n
i
c
a
l
El
e
c
t
r
i
c
a
l
In
s
t
r
u
m
e
n
t
a
t
i
o
n
Al
l
A
s
s
e
t
s
20 Preliminary Treatment 1 1 3 4 3 3 12%
21 Primary Treatment - A Side 5 5 5 4 4 5 100%
21 Primary Treatment - B & C Side 4 3 4 3 4 4 34%
22 Secondary Treatment - Activated
Sludge 3 3 3 4 3 3 28%
22 Secondary Treatment - DAFT 4 1 3 2 3 2 17%
22 Secondary Treatment - Trickling
Filter 2 1 2 2 3 2 10%
23 Oxygen Facility 3 3 3 4 4 3 100%
24 Effluent Disposal 2 2 3 4 4 3 35%
25 Solids Handling - Digesters 4 4 3 3 3 3 69%
25 Solids Handling - Facilities 2 1 2 2 3 2 5%
25 Solids Handling - Gas Handlinga 3 4 4 4 4 50%
26 Central Generationa 1 3 4 4 3 39%
27 Utilities 3 1 3 4 3 3 20%
28 Electrical Distributiona 4 4 57%
29 Occupied Buildings Refer to Area 29 Asset Management Summary
Plant No. 2 Total 41%
Please see the comprehensive Acronyms and Abbreviations list for definitions.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
a White box with diagonal line indicates there are no assets assigned to this discipline within this process area.
2025 Asset Management Plan
17
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM PUMP STATION AND FORCE MAIN OVERVIEW
Figure 2-3. Collection System Pump Stations and Force Mains – Remaining Useful Life Score Map
Note: Not all pump station force mains are shown on this map. Only longer force mains are shown. The colored pump stations reflect the average
RUL score as shown on the respective table.
Table 2-3. Collection System Pump Station and Force Main Remaining Useful Life
Pump Station
Average Remaining Useful Life Score
Pe
r
c
e
n
t
a
g
e
o
f
R
U
L
S
c
o
r
e
s
wi
t
h
4
s
o
r
5
s
Fo
r
c
e
M
a
i
n
St
r
u
c
t
u
r
a
l
Me
c
h
a
n
i
c
a
l
El
e
c
t
r
i
c
a
l
In
s
t
r
u
m
e
n
t
a
t
i
o
n
Al
l
A
s
s
e
t
s
15th Street 3 4 4 3 3 3 27%
A Street 3 4 4 3 3 3 25%
Bay Bridge 5 4 5 4 3 5 85%
Bitter Point 2 2 3 3 4 3 23%
College 4 3 3 2 3 3 25%
Crystal Cove 4 4 4 3 3 4 42%
Edinger 5 4 3 4 5 4 64%
Lido 4 4 4 4 3 4 75%
MacArthur 1 3 4 5 4 4 73%
Main Street 5 2 4 4 4 4 46%
Rocky Point 3 3 3 3 4 3 23%
Slater 4 3 4 3 4 4 38%
Seal Beach 1 4 5 4 5 5 83%
Westside 5 3 3 3 4 3 31%
Yorba Linda 5 4 4 4 4 4 82%
Newport Force Mainsa 2 2 0%
Total 49%
Please see the comprehensive Acronyms and Abbreviations list for definitions.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
a White box with diagonal line indicates there are no assets assigned to this discipline within this process area.
2025 Asset Management Plan
18
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM PIPELINE AND MANHOLE OVERVIEW
Figure 2-4. Collection System Pipelines and Manholes – Remaining Useful Life Score Map
Note: Only pipelines are shown on this map for clarity. Refer to Collection System Manholes Remaining Useful Life Score Map in
Section 2.2, Area Asset Management Summaries List.
Table 2-4. Collection System Pipeline and Manhole Remaining Useful Life
Trunklines
No
.
o
f
P
i
p
e
s
w
i
t
h
RU
L
S
c
o
r
e
o
f
4
or
5
Mi
l
e
s
o
f
P
i
p
e
s
wi
t
h
RU
L
S
c
o
r
e
o
f
4
or
5
Pe
r
c
e
n
t
a
g
e
o
f
Pi
p
e
s
w
i
t
h
R
U
L
Sc
o
r
e
of
4
o
r
5
(b
y
l
e
n
g
t
h
)
No
.
o
f
M
a
n
h
o
l
e
s
wi
t
h
R
U
L
S
c
o
r
e
of
4
o
r
5
Pe
r
c
e
n
t
a
g
e
o
f
Ma
n
h
o
l
e
s
w
i
t
h
RU
L
S
c
o
r
e
of
4
o
r
5
Baker-Main 74 4.9 12% —a —a
Bushard 11 1.4 6% 3 1%
Coast 16 1.1 10% 3 2%
Euclid 13 0.7 2% 69 16%
Interplantb 0 0.0 0% 0 0%
Knott 37 2.6 4% 94 12%
Miller-Holder 22 1.6 5% 43 16%
Newhope 26 1.7 6% 82 23%
Newport 20 1.0 4% 30 8%
Santa Ana River Interceptor 66 3.0 6% 160 28%
Sunflower 15 0.5 1% —a —a
Talbert 77 5.9 70% —a —a
Total 377 24.2 7% 484 11%
Please see the comprehensive Acronyms and Abbreviations list for definitions.
a Only trunklines with greater than 50% manhole inspections completed are included in this table and in the Asset Management
System Summaries.
b Interplant Trunk in this table refers only to Interplant Trunkline E (IPE) assets. Interplant Trunkline assets are included with Knott
Trunkline in its Asset Management System Summary.
2025 Asset Management Plan
19
2.2 Area Asset Management Summaries List
The following AM Summaries document the current state of process areas in both plants and
the collection system. The remainder of this section contains the AM Summaries organized as
follows:
Plant No. 1 Area Asset Management Summaries
• Preliminary Treatment
• Primary Treatment
• Secondary Treatment – Activated Sludge
• Secondary Treatment – Trickling Filters
• Interplant
• Solids Handling – Digesters
• Solids Handling – Remaining Facilities
• Central (Power) Generation
• Utilities
• Electrical Distribution
• Occupied and Power Buildings
Plant No. 2 Area Asset Management Summaries
• Preliminary Treatment
• Primary Treatment
• Secondary Treatment – Activated Sludge
• Secondary Treatment – Trickling Filters/Solids Contact
• Effluent Disposal
• Solids Handling – Digesters
• Solids Handling – Remaining Facilities
• Activated Sludge and Oxygen Facility
• Central (Power) Generation
• Utilities
• Electrical Distribution
• Occupied and Power Buildings
Collection System Asset Management Summaries
• Pump Stations and Force Mains
• Pipelines and Manholes
2025 Asset Management Plan
20
The AM Summaries are built around a common structure. This structure provides a framework
for continued use and development of the summaries. Key structure elements for AM
Summaries are shown on Figure 2-5.
Figure 2-5. Area Asset Management Summary Structure
2025 Asset Management Plan
21
Plant No. 1 Area Asset Management
Summaries
2025 Asset Management Plan
22
This page is intentionally left blank.
2025 Asset Management Plan
23
Process Schematic
Major Assets Quantities
Metering and Diversion
Flowmeters 7
Gates 29
Sunflower Pump Station
Screw Pumps 2
Motors 2
Gearboxes 2
Lube Oil Systems 2
Gates 3
Steve Anderson Lift Station
Main Pump/Motor/VFD 4
Drain Pumps 2
Sump Pumps 4
Flowmeter 1
Major Assets Quantities
Splitter Box
Slide Gates 5
Weir Gates 15
Flowmeters 3
Bin Loading Building
Paddle Conveyors 2
Belt Conveyor 1
Fans 3
AREA 10 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 PRELIMINARY TREATMENT
2.2.1 Plant No. 1 Preliminary Treatment
Major Assets Remaining Useful Life
Asset Type
Me
t
e
r
i
n
g
&
Di
v
e
r
s
i
o
n
Su
n
f
l
o
w
e
r
Pu
m
p
S
t
a
t
i
o
n
St
e
v
e
An
d
e
r
s
e
n
L
i
f
t
St
a
t
i
o
n
Ba
r
S
c
r
e
e
n
s
Ma
i
n
S
e
w
a
g
e
Pu
m
p
s
Ae
r
a
t
e
d
G
r
i
t
Ch
a
m
b
e
r
Sp
l
i
t
t
e
r
B
o
x
Bi
n
L
o
a
d
i
n
g
Bu
i
l
d
i
n
g
Ch
e
m
i
c
a
l
Sc
r
u
b
b
e
r
s
Bi
o
s
c
r
u
b
b
e
r
s
Wa
s
t
e
h
a
u
l
e
r
St
a
t
i
o
n
Civil
Effluent Piping - - - - - - 3 - - - -
Structural
General 2 5 1 2 2 2 3 3 4 3 3
Mechanical
Piping 5 - 1 - 1 - - - - - 3
Gates/Valves 5 5 2 5 5 5 5 - 5 3 2
Gearboxes - 4 - 1 - - - 5 - - -
Screens - - - 1 - - - - - - -
Pumps - 5 2 - 5 - - - 5 5 -
Conveyors - - - 5 - - - 4 - -
Fans/Blowers 4 4 2 4 5 5 - 5 5 1 2
Electrical
VFDs - - 5 - 5 - - - - 4 -
MCCs 5 5 2 5 5 5 5 5 5 5 5
Instrumentation
General 5 5 4 5 4 - 5 - 5 5 4
Please see the comprehensive Acronyms and Abbreviations list for definitions.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
Major Assets Quantities
Bar Screens
5/8" Bar Screens 6
Gates 21
Fans 4
Main Sewage Pumps
Pump/Motor/VFD 5
Gates 15
Aerated Grit Chambers
Grit Chambers 5
Bulk Gates 18
Slide Gates 15
Flap Gates 5
Blowers 3
Major Assets Quantities
Odor Control
Bioscrubbers 2
Chemical Scrubbers 4
Fans 6
Recirculation Pumps 12
Chemical Tanks 4
Wastehauler Station
Flushing System/Tank 1
Barrier Arm 1
Fan 1
Automated Samplers 2
2025 Asset Management Plan
24
AREA 10 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 PRELIMINARY TREATMENT
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Headworks Maintainability – The P1-105 project will rehabilitate most assets throughout
the preliminary treatment area; however, the construction completion date is February 2030.
Some assets have very little remaining life or have failed already and will need interim
solutions before they are addressed by the project, these assets include exhaust fans, the
hydrogen sulfide (H2S) monitoring system, and corroded piping and grit paddles.
Continue to actively monitor the condition of aging assets scheduled for repair under P1-
105 and develop appropriate solutions as applicable.
Permanent solutions will be provided by Project P1-105.
Metering & Diversion (M&D) – The trunkline pipes inside the M&D building are at the end
of their useful life and are experiencing accelerated corrosion causing failures and leaks in
2024 (Sunflower and Santa Ana River Interceptor [SARI]). O&M is also experiencing issues
with the flow meters being inaccurate.
Condition assessment of each trunkline and repairs were performed between August 2024
and January 2025 to extend the useful life of the piping. Instrumentation team is assessing
and replacing the troubled flow meters.
M&D structure and piping along with the flow meters will be rehabilitated/replaced by
Project P1-105.
Sunflower Pump Station – This pump station is equipped with two screw pumps. Pump
no. 1 and associated supporting equipment have been replaced by FE19-04, but pump no.
2 is experiencing issues with bearings, gear boxes, and grease system. These assets in the
pump station are approaching the end of their useful lives. The gates are leaking, and the
pump station structure also has coating failure and concrete deterioration along with rebar
corrosion.
Maintenance continues to monitor, repair, and replace parts as needed to keep pump no. 2
in operation.
FR1-0026 will rehabilitate the pump station outlet channels to repair the concrete, rebar,
and coating in 2026/2027. FE25-01 will replace pump no. 2 and associated supporting
equipment, similar to FE19-04, with construction starting in 2027. P1-105 will replace gates
and T-lock. All of these projects will provide a complete rehabilitation of Sunflower Pump
Station.
Wastehauler Station – The automated sampling systems installed by FE20-01 continues
to experience issues with the valves, switches, and touch screens, causing shutdowns and
delays. The connection point height and angle create an upward flow direction, which is not
ideal, causing waste to drain out when haulers disconnect, leading to additional odor.
The Instrumentation group has been providing support and working with the vendor to
troubleshoot these issues and keep the Wastehauler Station in operation.
A planning study is recommended to review the ongoing issues at the Wastehauler Station
and propose solutions to be implemented by future CIP Project X-102, Wastehauler Facility
Improvements, to improve the operation and maintenance of the facility.
Current and Future Projects
Project No. Project Title Impacted Facilities
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
P1-105 Headworks Rehabilitation at Plant No. 1 Headworks
FR1-0026 Sunflower Pump Sation Effluent Channel Repairs Sunflower Pump Station
FE25-01 Sunflower Pump No. 2 Replacement at Plant No. 1 Sunflower Pump Station
FE24-11 Steve Anderson Lift Station (SALS) Variable Frequency Drive (VFD) Replacement at Plant No. 1 Steve Anderson Lift Station
FE22-01 Platform Modifications for Process Areas at Plant No. 1 and No. 2 Steve Anderson Lift Station
FE23-06 HVAC Replacements at Plant Nos. 1 and 2 Steve Anderson Lift Station
PRN-01022 Replace MSP-4 with Spare Influent Pump Station
TBD Wastehauler Facility Improvements Planning Study Wastehauler Station
X-102 Wastehauler Facility Improvements Wastehauler Station
X-044 Steve Anderson Lift Station Rehabilitation Steve Anderson Lift Station
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
25
Process Schematic
Note: Primary Basins No. 1 and No. 2 are not shown. The facilities are scheduled to be demolished within the next 10 years.
Major Assets Quantities
Rectangular Primary Basins
Basins 26
Thickened Sludge Pumps 8
Dilute Sludge Pumps 6
Dilute Sludge Sumps 2
Scum Pumps 12
Scum Pits 6
Note: Quantity may not reflect the most recent
development. To be updated in the next revision.
Major Assets Quantities
Circular Primary Basins
Basins 3
Sludge Pumps 4
Scum Pumps 3
Phys. Chem.
Polymer Tanks 4
FeCl3 Tanks 1
Major Assets Quantities
Waste Sidestream Pump Station
Pumps 3
Primary Odor Scrubber Complex
Chemical Scrubbers 4
HCl Tanks 1
HCl Pumps 2
NaOH Tanks 1
Major Assets Quantities
Primary Odor Scrubber Complex
NaOH Pumps 5
Bleach Tanks 1
Bleach Pumps 8
AREA 11 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 PRIMARY TREATMENT
2.2.2 Plant No. 1 Primary Treatment
Major Assets Remaining Useful Life
Asset Type
EB
D
B
PE
D
B
-1
PE
J
B
PS
B
3
-5
PS
B
6
-15
PS
B
1
6
-31
PI
S
B
Ce
n
t
e
r
f
e
e
d
Ch
a
n
n
e
l
s
WS
S
P
S
-1
Ph
y
s
.
C
h
e
m
.
Od
o
r
Co
n
t
r
o
l
Civil
Effluent Piping 5 5 4 4 3 5 - - 3 - -
Structural
Structures 5 4 1 5 2 2 3 3 3 3 4
Cover - - - 3 2 2 2 3 - - -
Mechanical
Piping - - - - 4 4 - - 3 3 5
Gates/Valves 5 4 3 5 3 3 4 3 3 3 4
Sludge/Scum Collection System - - - 5 3 3 - - - - -
Sludge Pumping System - - - 5 3 3 - - 4 - -
Scum Pumping System - - - 5 5 5 - - - - -
Recirculation/Chemical Pumping/Fans - - - - - - - - 3 4 4
Electrical
VFDs - - - - 3 3 - - 3 5 -
MCCs - - - 5 5 2 - - 5 5 5
Instrumentation
General - 3 - 4 4 4 - - 4 3 5
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Note: RUL scores do not reflect new pumps and VFDs recently installed by P1-133, currently in commissioning. RUL scores will be updated in the next
revision.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
2025 Asset Management Plan
26
AREA 11 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 PRIMARY TREATMENT
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Primary Basins 6–31 Mechanical Reliability and Obsolescence – The rectangular
primary basins experience relatively frequent issues with mechanical part replacement and
sludge pumping systems that require maintenance. These issues require ongoing attention
from Maintenance and can affect Plant No. 1’s treatment capacity. The scum pumps serving
these basins are also obsolete, which means parts cannot be procured quickly for repairs,
causing significant interruption to operation.
The center feed channel was cleaned and inspected in 2024; repairs were made to the T-
lock liner to extend the useful life of the structure. The primary basins 17–31 west side
effluent channel and pipe are being inspected during the preparation of this document to
ensure they remain free of obstructions, allowing for smooth and reliable operation during
the upcoming wet weather season. Condition assessments and repairs of the primary basin
tanks will be planned in conjunction with O&M activities in the coming years to increase
reliability of the basins prior to the future rehabilitation project.
P1-133 has recently replaced five of the six launders in the Primary Influent Splitter Box
(PISB), installed new variable frequency drives (VFDs) for the three dilute sludge pumps
serving basins 6–15, and replaced the three dilute sludge pumps serving basins 17–31.
FE23-05 will replace the obsolete scum pumps to improve scum pumping reliability and
availability. These projects will increase the reliability of the rectangular primary basins for
the coming decade before X-017 provides a general rehabilitation of the primary
sedimentation basins.
Primary Treatment Area Programmable Logic Controller (PLC) Obsolescence –
Existing PLCs are obsolete.
Maintenance has stockpiled parts and will continue to repair/replace as needed. Obsolete PLCs will be replaced as part of future projects in this area.
Scum Management – The scum collection systems in rectangular primary basins have
been experiencing operational issues such as trapped scum in various locations, overflow
and failure of scum tipping troughs, and clogs in the scum pits and scum pumps.
PRN-00563 will perform a comprehensive evaluation of the scum collection system and
provide recommendations. The study will take the results of previous research studies, such
as RE19-01, Primary Scum Equipment Evaluation at Plant No. 1, into consideration.
X-017 will take into consideration the results of the Scum Study to improve the scum
removal system during the rehabilitation.
Waste Sidestream Pump Station (WSSPS) Pump Ragging and Grit – The pump station
has been experiencing increased ragging issues due to the headworks shutdown scheduled
for the P1-105 construction. Grit buildup has also increased resulting in Maintenance having
to schedule grit removal monthly. The pumps are also approaching the end of their useful
lives.
Maintenance has increased the frequency of pump de-ragging and grit removal from the
wet well as a mitigation measure. It is also recommended to install a de-ragger on one of
the pumps to test compatibility with this service.
MP1-003 has replaced one of the WSSPS pumps with a chopper type pump to test the
performance of the new pump type for this service to mitigate the ragging issues and
improve the station’s reliability. The project is currently in the commissioning phase. Upon
improved performance, the other two pumps will be replaced with similar chopper pumps
through a subsequent project. X-006 is the future project that will rehabilitate the pump
station and increase the station’s capacity.
Primary Effluent Pipe Conditions – A recent condition assessment of the West Primary
Effluent Pipe revealed that most of the PVC pipe joint liners have failed and several pipe
joints have also failed as groundwater was observed to be infiltrating the pipe via these
joints.
Develop an expedited repair project to seal the failed joints. Plan a more detailed condition
assessment to pressure test all joints in the pipe.
Plan a capital project to perform a comprehensive rehabilitation of both primary effluent east
and west pipes within 5 years.
Current and Future Projects
Project No. Project Title Impacted Facilities
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
RE24-01 Hydrogen Sulfide Analyzer Evaluation at Plant No. 1 Primary Scrubbers 5–8
PRN-00563 P1-33/37 Scum Study Primary Basins 6–31
FE23-05 Primary Clarifier 6–31 Scum Pump Replacement at Plant No. 1 Primary Basins 6–31
MP1-003 WSSPS Pump Replacement at Plant No. 1 Waste Sidestream Pump Station
PRN-01012 Primary Clarifier Effluent Gate PLC Panel Replacement at Plant 1 Primary Basins 6–31
P1-126 Primary Clarifier Replacements and Improvements at Plant No. 1 Primary Basins 3, 4, and 5
X-017 Plant No. 1 Primary Clarifiers 6–31 Rehabilitation Primary Basins 6–31
X-006 Waste Sidestream Pump Station Rehabilitation Waste Sidestream Pump Station
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
27
Process Schematic
AREA 12 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 SECONDARY TREATMENT – ACTIVATED SLUDGE
2.2.3 Plant No. 1 Secondary Treatment – Activated Sludge
Asset Type
PE
P
S
Bl
o
w
e
r
B
u
i
l
d
i
n
g
1
AS
1
A
e
r
a
t
i
o
n
B
a
s
i
n
s
AS
1
C
l
a
r
i
f
i
e
r
s
AS
1
R
A
S
P
S
AS
1
W
A
S
AS
2
P
E
P
S
2
Bl
o
w
e
r
B
u
i
l
d
i
n
g
2
AS
2
A
e
r
a
t
i
o
n
B
a
s
i
n
s
AS
2
C
l
a
r
i
f
i
e
r
s
AS
2
R
A
S
P
S
/
W
A
S
P
S
WS
S
P
S
2
PE
D
B
-2
AS
1
&
A
S
2
Ju
n
c
t
i
o
n
B
o
x
e
s
Effluent Piping 4 3 3 3 4 3 1 - - - - - 1 2
Buildings 4 4 - - 3 - - 1 - - - - - -
Structures 3 - 4 4 - - 1 - 1 1 - 1 1 2
Piping 4 4 4 4 5 3 - 2 2 2 2 2 - -
Pumps 5 - - - 5 5 - - - - 3 3 - -
Diffusers - - 4 - - - - - 4 - - - - -
Mixers - - 4 - - - - - 2 - - - - -
Solids Collector Mechanism - - - 5 - - - - - 3 - - - -
Blowers - 4 - - - - - 2 - - - - - -
Drain Gates & Inlet Gates - - 5 4 - - 2 - 2 2 - - 2 -
HVAC & Ventilation 4 4 - - - - - 3 - - - - - -
Chemical/Polymer Facility - - 5 - - - - - - - - - - -
VFDs 4 - 4 4 4 4 - - 4 4 4 4 - -
MCCs 5 - 5 5 5 5 - - 2 2 2 2 - -
PLCs, Flow Meters 5 5 5 5 5 5 - 3 3 3 3 3 - -
Please see the comprehensive Acronyms and Abbreviations list for definitions.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
2025 Asset Management Plan
28
Major Assets
Major Assets Quantities
Primary Effluent Pump Station
Building 1
Wet Well 1
Pumps 3
Discharge Valves 3
AS1 Aeration Basins
Aeration Basins 10
Inlet Gates 10
AS1 Blower Building 1
Blower Building 1
Blowers 5
Major Assets Quantities
AS1 Secondary Clarifiers (SCs)
Secondary Clarifiers 26
Inlet Gates 78
Sludge Collectors 52
Secondary Clarifiers 26
AS1 RAS PS/WAS PS
RAS PS Building 1
RAS Pumps 5
WAS Pumps 4
Primary Effluent Pump Station 2 (PEPS 2)
Structure 1
Gate 1
Major Assets Quantities
AS2 Aeration Basins
Aeration Basins 6
Inlet Gates 6
AS2 Blower Building 2
Blower Building 1
Blowers 4
AS2 Secondary Clarifiers
Secondary Clarifiers 6
Sludge Collectors 6
AS2 RAS PS/WAS PS
RAS/WAS Pumps 12/6
Surface Wasting Pumps 6
Scum Pumps 6
Major Assets Quantities
Waste Side Stream Pump Station 2
Pumps 2
Structure 1
Primary Effluent Distribution Box 2
Structure 1
Gates 11
AS1 and AS2 Junction Boxes
Junction Box Structures 8
Major Assets Quantities
Dissolved Air Flotation Thickeners (DAFTs)
Concrete Tanks 6
Mechanical Sweep 6
Recycle Pumps 12
Retention Tank 6
TWAS Pumps 12
DAFTs Polymer System
Storage Tank 2
Mix Tank 2
Polymer Transfer Pumps 2
Feed Pumps 6
AREA 12 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 SECONDARY TREATMENT – ACTIVATED SLUDGE
Key Issues – AS1 and AS2
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Activated Sludge Plant No. 1 – AS1 is an aging facility. Condition assessments show
corrosion on the reactor wall. Baffle wall supports and vertical air pipes have corrosion in
some of the basins. In addition, final clarifier drives are obsolete, and two of the secondary
clarifiers’ chain and flights mechanisms are broken and no replacement part is available.
Maintenance is monitoring and replacing the equipment as needed. MP1-017 is in
progress to rebuild Final Clarifiers 11 and 13 due to a broken chain and flight. Planning
and Maintenance have started a trial project to address obsolete clarifier drives.
P1-140 will rehabilitate AS1, replacing blowers, repairing basins, and replacing mechanical
equipment.
PEDB-2 – PEDB-2 has limited hydraulic capacity. Routing flows from rectangular primary
clarifiers to AS1 through PEDB-2 has some limitations and risk of overflows.
Planning is coordinating with the P1-126 project team to ensure reliable hydraulic capacity
is available during project construction.
P1-126 performed hydraulic modeling and included plans for bypass during peak wet
weather flow.
Obsolescence at AS1 and AS2 Blower Controls – The blower control system is
obsolete and requires an upgrade to operate efficiently.
PRN-01053 was approved by Clearinghouse to upgrade obsolete vane actuators. P1-140 will replace blowers and control systems for AS1.
Current and Future Projects
Project No. Project Title Impacted Facilities
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
FE20-05 Plant Water Pipe Replacement AS1 Aeration Basin and Clarifiers
MP1-017 Activated Sludge Final Clarifiers 11 & 13 Rebuild at Plant No. 1 AS1, Final Clarifiers 11 and 13
P1-140 Activated Sludge 1 Rehabilitation at Plant No. 1 AS1 Basins, Blowers, Clarifiers, and PEPS
X-039 Plant Water Pump Station Rehabilitation No direct impact on the Activated Sludge Facility
X-018 Activated Sludge 2 Rehabilitation at Plant No. 1 AS2 Aeration Basin, Clarifiers, and Blowers
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
29
Process Schematic
Major Assets
Major Assets Quantities
Trickling Filter Pump Station
Structure 1
Trickling Filter Pumps 3
Trickling Filters
Trickling Filter Basins 2
Rotary Distributor 2
Recirculation Fans 8
Secondary Clarifiers
Circular Clarifiers 2
Sludge Collector 2
Sludge Pump 2
Junction Boxes
Structure 6
AREA 12 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 SECONDARY TREATMENT – TRICKLING FILTERS
2.2.4 Plant No. 1 Secondary Treatment – Trickling Filters
Major Assets Remaining Useful Life
Asset Type
Tr
i
c
k
l
i
n
g
F
i
l
t
e
r
Pu
m
p
S
t
a
t
i
o
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Tr
i
c
k
l
i
n
g
F
i
l
t
e
r
s
Se
c
o
n
d
a
r
y
C
l
a
r
i
f
i
e
r
s
Tr
i
c
k
l
i
n
g
Fi
l
t
e
r
Sl
u
d
g
e
Pu
m
p
S
t
a
t
i
o
n
Ju
n
c
t
i
o
n
B
o
x
e
s
Civil
Effluent Piping 1 1 1 - 1
Structural
Buildings - 1 1 - -
Structures 1 2 1 1 1
Mechanical
Pumps 3 - 3 1 -
Distributor Drive - 4 - - -
Ventilation Fans 3 3 - 3 -
Trickling Filter Media - 5 - - -
Clarifier Moving Mechanism - - 3 - -
Valves, Gates 3 - 3 3 3
Electrical
VFDs 5 5 - - -
MCCs, Switchgear 1 2 2 2 -
Instrumentation
General 4 4 4 4 4
Please see the comprehensive Acronyms and Abbreviations list for definitions.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
2025 Asset Management Plan
30
AREA 12 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 SECONDARY TREATMENT – TRICKLING FILTERS
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Trickling Filter PLC Obsolescence – Existing PLCs are obsolete. Maintenance has stockpiled parts and will continue to repair/replace as needed. Obsolete PLCs will be replaced as part of future projects in this area.
Trickling Filters Snail Control – Permanent caustic dosing is needed at the Trickling Filter
Pump Station for snail control. Currently, temporary totes are used to dose caustic into the
wet well.
Continue to dose caustic using temporary totes for snail control. P1-126 will add pumps to the caustic tank in the primary scrubber area to provide a permanent solution
for trickling filter snail control.
Trickling Filter Pump Station Reliability – The presence of snail shells can cause
damage to the trickling filter pump impellers affecting the reliability of the pump station.
Perform condition assessment and repair as needed. N/A
Trickling Filter Media – Trickling filters at Plant No. 1 have been in operation for over 17
years. The filter media is nearing the end of its useful life, and the trickling filter lining and
coatings systems need repairs.
N/A Project P1-142 will replace the trickling filter media and repair coating defects and failures.
Trickling Filter Odor Control – An increase in odor complaints may be due to the trickling
filter operation. Operations has reduced flow to the trickling filters to control odors.
A planning study (PS24-04) is being conducted to determine the best
solution/approach to minimizing odor at the trickling filters, which may include
covering the trickling filters and adding odor control.
Solutions from the planning study (PS24-04) will be implemented via future project X-015.
Current and Future Projects
Project No. Project Title Impacted Facilities
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
P1-126 Primary Sedimentation Basins Numbers 3–5 Replacement at Plant No. 1 Trickling Filters Pump Station
P1-142 Trickling Filter Rehabilitation at Plant No. 1 Trickling Filters
TBD Plant No. 1 Trickling Filter #2 Rotary Distributor Drive and Motor Replacement Trickling Filters
TBD Plant No. 1 Trickling Filter Rotary Distributor VFD Replacement Trickling Filters
TBD Trickling Filter Clarifier #1 Drain Valve Replacement at Plant No. 1 Trickling Filters Secondary Clarifier 1
FR1-0011 Plant No. 1 Trickling Filter Pumps VFD replacement (three pumps) Trickling Filters Pump Station
PS24-04 Trickling Filter Odor Control Planning Study at Plant No. 1 Trickling Filters
X-015 Trickling Filters Facilities Rehabilitation at Plant No. 1 Trickling Filters Project starts in 2040
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
31
Process Schematic
Major Assets Quantities
Ellis Corridor
Large Diameter Piping 1.2 miles
Fiber Optic Communication 0.8 miles
Brookhurst Corridor
Large Diameter Piping 3.8 miles
Bushard Corridor
Fiber Optic Communication 4.1 miles
AREA 14 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 INTERPLANT
2.2.5 Plant No. 1 Interplant
Major Assets
Major Assets Remaining Useful Life
Asset Type
Plant No. 1 Facility Santa Ana Corridor
El
l
i
s
C
o
r
r
i
d
o
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Br
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k
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i
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Bu
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a
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C
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r
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o
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EJ
B
TF
S
E
J
B
-2
SE
J
B
SE
J
B
-3
SE
J
B
-7
PE
J
B
-1
66
"
P
E
/
S
E
84
"
P
E
/
S
E
10
8
"
P
E
/
S
E
66
"
P
E
/
S
E
84
"
P
E
/
S
E
12
0
" PE
/
S
E
Di
g
e
s
t
e
r
G
a
s
L
i
n
e
Civil
Pipeline - - - - - - 4 3 1 4 2 1 3 1 1 -
Structural
Structure 1 1 3 1 1 4 - - - - - - - - - -
Mechanical
Sluice Gates 2 - - 3 1 5 - - - - - - - - - -
Butterfly Valves 2 3 - - - - - - - 1 - - - - - -
Ball Valves - - - - - - - - - - - - 1 - - -
Instrumentation
Fiber Optic - - - - - - - - - - - 1 - 1 - 1
Please see the comprehensive Acronyms and Abbreviations list for definitions.
For spatial representation of asset remaining useful life, please see remaining useful life maps at the end of this area summary.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
Major Assets Quantities
Plant No. 1 Facility
Large Diameter Piping 1.1 miles
Junction Boxes 6
Gates 17
Butterfly Valves 9
Major Assets Quantities
Santa Ana Corridor
Large Diameter Piping 10.6 miles
Digester Gas Piping 3.9 miles
Fiber Optic Communication 3.2 miles
Ball Valves 2
2025 Asset Management Plan
32
AREA 14 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 INTERPLANT
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Vandalism – Repeated vandalism of electrical controls at EJB is due to the damaged security
fence, which allows access to the site. Exposed conduit outside of the fence line was cut and wire
stolen. Project MP1-008 was completed in 2025 and installed new lighting to improve nighttime
visibility and deterrence.
Damage and copper wire theft were found at several cathodic protection test stations for the 66-
inch, 84-inch, Interplant Digester Gas Pipeline (IDGP), and fiber optic cable facilities along the
Santa Ana River Trail. The damaged cathodic protection test stations were repaired in 2025
including installing flat bars and special locking bolts for adding security. The fiber optic handholes
were also repaired and full functionality restored.
N/A Project SC23-02 will address security issues at EJB by replacing existing fencing with a
higher-security fencing system and enclosing exposed conduit with new fencing.
Interplant Digester Gas Pipeline Deficiencies – Surface corrosion of varying severity has
occurred in all blow off vaults. Other deficiencies include water intrusion in Vaults 1–4, Vault 4
outside existing utility easement, access difficulties to Vaults 8 and 9, structural damage to Vault 10,
lack of dedicated blowdown valves, and lack of pressure relief between the Department of
Transportation valves.
N/A Project FRJ-0003 will repair, replace (or relocate), and abandon blow off vaults. The project
also includes installing blowdown valve manifolds and pressure relief for the IDGP.
Santa Ana Corridor Soil Erosion – Soil loss has been occurring in the unprotected slopes along
the interplant utility corridor paralleling the Santa Ana River for many years. Soil erosion is directly
affecting blow off Vault 5 on the IDGP. There are significant reaches of pipeline that appear to lack
adequate cover for pipeline protection.
OC San has approved a new planning study, PRN-00935, to perform a slope
erosion analysis with various field investigations; review slope stabilization
alternatives; and identify, compare, and rank conceptual design alternatives. This
effort includes developing a new plan and profile for the pipeline to pinpoint areas
of inadequate cover and provide the basis of design to resolve the issue(s).
Based on the recommendations of PRN-00935, a proposed improvement project will be
developed to construct permanent improvements. The future improvement project must at
least be started prior to OC San’s next audit with the California Public Utilities Commission in
2032.
PEJB-1 Condition – The sluice gates in PEJB-1 are in very poor condition and no longer properly
seal. The PEJB-1 structure is also in poor condition.
N/A Rehabilitation of the PEJB-1 structure and replacement of existing sluice gates with new
ones are included in the scope of Project P1-126.
66-inch Interplant Pipeline Condition – The 66-inch pipelines between PEJB-1 and EJB are in
poor condition per the 2021 condition assessment. Conditions have not changed significantly since
2009. The 66-inch pipelines between EJB and Ocean Outfall Booster Station (OOBS) that were not
sliplined are also in poor condition.
Perform a new condition assessment of the 66-inch Interplant Pipeline between
PEJB-1 and EJB in 2026.
Project X-125 will rehabilitate the 66-inch pipelines between PEJB-1 and EJB, and portions
of the 66-inch pipeline not sliplined between EJB and OOBS.
Current and Future Projects
Project No. Project Title Impacted Facilities
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
SC23-02 Effluent Junction Box Security Fence Replacement at Plant No. 1 EJB
FRJ-0003 Interplant Gas Line Blow Off Repairs Digester Gas Piping
PRN-00935 Interplant Digester Gas Pipeline Slope Stabilization Study Digester Gas Piping
P1-126 Primary Sedimentation Basins No. 3-5 Replacement at Plant No. 1 PEJB-1
X-125 66-Inch Interplant Pipeline Rehabilitation at Plant No. 1 66” PE/SE
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
33
Remaining Useful Life Maps
AREA 14 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 INTERPLANT
2025 Asset Management Plan
34
Remaining Useful Life Maps
AREA 14 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 INTERPLANT
2025 Asset Management Plan
35
Process Schematic
Note: Process Schematic shows entire Area 15 Solids Handling Facility.
Note: Process Schematic shows entire Area 15 Solids Handling Facility.
Major Assets
Major Assets Quantities
Anaerobic Digesters
Digesters (7–16) 10
Holding Digesters (5 & 6) 2
Sludge Mixing Pumps 22
Grinders 10+3
Sludge Recirculation Pumps 10
Hot Water Circulation Pumps 10
Major Assets Quantities
Anaerobic Digesters (Continued)
Heat Exchangers 10
Bottom Sludge Pumps 5
Digesters Transfer Pumps 3
Ferric System
Storage Tanks 2
Feed Pumps 2
Major Assets
Major Assets Quantities
Anaerobic Digesters
Digesters (7–16) 10
Holding Digesters (5 & 6) 2
Sludge Mixing Pumps 22
Grinders 10+3
Sludge Recirculation Pumps 10
Hot Water Circulation Pumps 10
AREA 15 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 SOLIDS HANDLING – DIGESTERS
2.2.6 Plant No. 1 Solids Handling – Digesters
Major Assets Remaining Useful Life
Asset Type
Di
g
e
s
t
e
r
5
(H
o
l
d
e
r
)
Di
g
e
s
t
e
r
6
(H
o
l
d
e
r
)
Di
g
e
s
t
e
r
7
Di
g
e
s
t
e
r
8
Di
g
e
s
t
e
r
9
Di
g
e
s
t
e
r
1
0
Di
g
e
s
t
e
r
1
1
Di
g
e
s
t
e
r
1
2
Di
g
e
s
t
e
r
1
3
Di
g
e
s
t
e
r
1
4
Di
g
e
s
t
e
r
1
5
Di
g
e
s
t
e
r
1
6
Fe
r
r
i
c
S
y
s
t
e
m
Civil
Effluent Piping 2 2 2 2 2 2 2 2 2 2 2 2 -
Structural
Digester 3 3 3 3 3 3 2 2 2 2 1 1 -
Mechanical
Piping 2 2 2 2 2 2 2 2 2 2 2 2 2
Chemical Pumps - - - - - - - - - - - - 2
Ferric Control System - - - - - - - - - - - - 2
Sludge Mixing Pumps 3 3 3 3 3 3 3 3 3 3 3 3 -
Sludge Recirculation & Heating
System - - 3 3 3 3 3 3 3 3 3 3 -
Hot Water System - - 3 3 3 3 3 3 3 3 3 3 -
Sludge Transfer Pumps 4 4 4 4 4 4 -
Electrical
VFDs 4 4 4 4 4 4 4 4 4 4 4 4 -
MCCs 2 2 2 2 2 2 2 2 2 2 2 2 -
Instrumentation
PLCs and Flow Meters 3 3 3 3 3 3 3 3 3 3 3 3 -
Please see the comprehensive Acronyms and Abbreviations list for definitions.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
2025 Asset Management Plan
36
AREA 15 ASSET MANAGEMENT SUMMARY PLANT NO. 1 SOLIDS HANDLING – DIGESTERS
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Structures – Project PS15-06 Seismic Evaluation of Structures at Plant No. 1 and Plant No. 2
has identified lateral spread as the main seismic risk for the digesters and structures close to
the Santa Ana River.
N/A Project X-109 will address lateral spread seismic risk.
Digester Leaks – There are minor leaks at digester wall penetrations. Repairs were made under the Condition Assessment Program. The digester
condition assessment will evaluate pipe penetrations and include repairs as
needed.
Project X-120 will perform comprehensive rehabilitation or replacement of the digesters.
Digester Mixing – With thicker sludge being sent to the digesters, the two existing high-rate
pumps are needed to mix the sludge. Any failure of the mixing pumps, even with short duration
repairs, will affect the digester mixing efficiency.
A trial study is in progress to install one chopper pump at Digester 16 to improve
digester mixing (FE24-01).
Based on the results of FE24-01, Planning will determine whether a planning study (PRN-00962)
is needed to evaluate the mixing system, considering co-thickened sludge density and pump repair
history.
Current and Future Projects
Project No. Project Title Impacted Facilities
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
FE24-01 Chopper Pump Trial for Digester Mixing at Plant No. 1 Digester 16 Mixing System
PRN-00962 Digester Mixing Capacity Reliability Study All Digesters and Holders
X-109 Lateral Spreading Mitigation at Plant No. 1 All Digesters and Holders
X-120 Digester Rehabilitation/Replacement at Plant No. 1 All Digesters and Holders
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
37
Process Schematic
Major Assets
Major Assets Quantities
Thickening System
Sludge Blending Tanks 3
Thickening Grinders 3
Centrifuge Feed Pumps 3
Thickening Centrifuges 3
Thickened Sludge Wet Wells 3
Thickened Sludge Pumps 6
Major Assets Quantities
Thickening System (Continued)
Centrate Wet Well 1
Centrate Pumps 3
Chemical Equipment
Thickening Polymer Feed Pumps 3
Dewatering Polymer Feed Pumps 3
Major Assets Quantities
Dewatering Odor Control
Three-Stage Packed Tower Scrubbers 3
Carbon Media 2
Truck Loading
Cake Storage Silos 4
Cake Silo Transfer Pumps 4
Standby Truck Loading Bay 1
Major Assets Quantities
Gas Handling
Low Pressure Gas Holder 1
Gas Compressors 3
Gas Dryers 2
Gas Flares 3
Gas Cleaning Vessels 2
Boiler 1
Major Assets Quantities
Chemical Equipment (Continued)
Polymer Mixing/Aging Tank 6
Polymer Make‐Down Unit 4
Dewatering System
Dewatering Grinders 2
Centrifuge Feed Pumps 3
Dewatering Centrifuges 3
Cake Transfer Pumps 3
AREA 15 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 SOLIDS HANDLING – REMAINING FACILITIES
2.2.7 Plant No. 1 Solids Handling – Remaining Facilities
Note: Process Schematic shows entire Area 15 Solids Handling Facility.
Major Assets Remaining Useful Life
Asset Type
Sl
u
d
g
e
B
l
e
n
d
i
n
g
Fa
c
i
l
i
t
y
(
S
B
F
)
Th
i
c
k
e
n
i
n
g
S
y
s
t
e
m
De
w
a
t
e
r
i
n
g
S
y
s
t
e
m
Ce
n
t
r
a
t
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S
y
s
t
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m
De
w
a
t
e
r
i
n
g
O
d
o
r
Co
n
t
r
o
l
Tr
u
c
k
L
o
a
d
i
n
g
Bo
i
l
e
r
S
y
s
t
e
m
Ga
s
H
a
n
d
l
i
n
g
Ga
s
H
o
l
d
e
r
Ga
s
F
l
a
r
e
s
Civil
Effluent Piping 1 1 1 1 - 1 - - - -
Structural
Structures 1 - - - - - 3 3
Buildings - 1 - 1 - 4 - -
Mechanical
Piping and Valve - 1 1 1 1 2 1 4 3 3
Pumps and Grinders 2 2 2 2 3 2 - - - -
Boiler and Heat Exchangers - - - - - - 2 - - -
Centrifuges - 2 2 - - - - - - -
Chemical/Polymer System - 1 1 - 2 - - - - -
Gas Cleaning Vessel - - - - 2 - - 3 - -
Gas Compressors - - - - - - - 4 - -
Gas Dryers - - - - - - - 5 - -
Silo Cake Conveyors - - - - - 2 - - - -
Silo Sliding Frames - - - - - 2 - - - -
Electrical
VFDs 4 4 4 4 4 4 - - - -
MCCs 1 1 1 1 1 1 1 5 - -
Instrumentation
PLCs and Flow Meters 3 3 3 3 3 3 5 4 - 3
Please see the comprehensive Acronyms and Abbreviations list for definitions.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
2025 Asset Management Plan
38
AREA 15 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 SOLIDS HANDLING – REMAINING FACILITIES
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Thickening and Dewatering Maintainability of the Equipment – Access to
equipment to perform maintenance is difficult due to congestion.
Currently, a small project is being scoped to add lifting supports for equipment in
the basement.
Project FE21-04 will install a handrail for safety improvements. Project FE22-01 will install equipment access and
a platform.
Odor Control System – The booster fan inside the T&D Building frequently
fails.
A small study will investigate the issue and recommend a solution. Pending the outcome of the study.
Gas Handling System Reliability – The aging facility requires replacement or
rehabilitation to meet current and future process needs and regulatory
requirements. The gas compressor system is aging and needs reliability
improvements such as regular equipment overhauls.
Continue to actively monitor the condition of aging assets and perform
preventive maintenance until replacement and/or overhaul.
Project J-124, Digester Gas Facilities Rehabilitation, will replace existing flares and compressor inlet moisture
separator systems; install new closed-loop cooling water systems; rehabilitate the building; perform various
electrical, instrumentation, and control upgrades to improve reliability; and add a new control room.
Gas compressor overhauls will be performed by Maintenance.
The remaining instrumentation upgrades will be completed under Project FE24-02.
Gas Dryer System Not Operational – The refrigerated gas dryer is out of
service. Currently, gas goes through the chilled water gas heat exchangers and
condensate drops out without a backup spare. These heat exchangers are also
aging and need replacement.
Continue to actively monitor the chilled water heat exchanger conditions until
replacement.
The refrigerated gas dryer system will be replaced by Project FE23-01.
The chilled water heat exchanger and separator replacements and gas dryer system instrumentation upgrades will
be addressed under Project FE24-02.
Plant Water – Corrosion from plant water on equipment is causing premature
wear on pumps and piping failures.
N/A A project will be created to incorporate recommendations by PS20-09. The goal of the study was to improve the
water quality and reduce corrosivity of the plant water.
Project J-124 will replace the plant water piping on the gas compressor skids.
Supplemental Heat Boiler – Controls are obsolete. The controls are obsolete, and Maintenance will continue to repair or replace
major components as necessary to ensure proper operation.
Obsolete PLCs will be replaced as part of future projects in this area.
Current and Future Projects
Project No. Project Title Impacted Facilities
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
J-124 Digester Gas Facilities Rehabilitation Electrical and Instrumentations, Building, Compressor
Cooling System, Inlet Separators, and Flares
N/A Digester Gas Compressor Overhauls at Plant No. 1 and No. 2 (Maintenance
Service Contract) Gas Compressors
FE22-01 Platform Modifications for Process Areas at Plant No. 1 and No. 2 Truck Loading Slide Frame
FR1-0018 Dewatering Centrifuge Diverter Gate Improvements at Plant No. 1 Dewatering Diverter Gate
FE23-01 Digester Gas Compressor Dryer Replacements at Plant No. 1 and No. 2 Refrigerated Gas Dryers
PRN-00686 Scrubber Acid System Installation Sulfuric Acid Tank
FR1-0024 Centrifuge Motor Disconnect Centrifuge Motors
FE24-02 Gas Compressor Chilled Water Exchangers and Condensate Separator
Replacements and Instrumentation Upgrades
Chilled Water Gas Heat Exchangers and Condensate
Separator, Gas Dryers Instrumentation, and Gas
Header Instrumentation
X-119 Thickening, Dewatering and Truck Loadout Rehabilitation at Plant No. 1 Solids Storage, T&D, and Solids Scrubbers
TBD Low-Pressure Digester Gas (LPDG) Drip Trap Improvements at Plant No. 1 LPDG Drip Traps
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
39
Process Schematic
Major Assets
Major Assets Quantities
Engine Generator
Gas Engine (12 Cylinders) 3
Electrical Generator 3
Engine Lube Oil System 3
Cooling System
Absorption Chiller 2
Boiler Feed Water System
Deaerator System 1
Heat Exchanger Systems
Jacket Water System 3
Auxiliary Waste Heat System 3
Headquarters Hot Water System 3
Waste Heat System 2
Headquarters Hot Water System 3
Major Assets Quantities
Engine Emission Control
OXI Catalyst 3
SCR Catalyst 3
Urea Injection System 3
Heat Recovery System
Heat Recovery Boiler 3
Building
Elevator 1
Piping Various
HVAC
Air Handling Units 5
Air Compressors
Engine Starting Air 2
Instrument Air 2
AREA 16 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 CENTRAL GENERATION
2.2.8 Plant No. 1 Central Generation
Major Assets Remaining Useful Life
Asset Type
En
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1
En
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2
En
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a
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#
3
Ch
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A
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Ho
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H
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Bo
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F
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/
S
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Wa
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Pl
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P
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Oi
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a
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In
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St
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Bu
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H
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a
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/
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a
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l
i
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g
Structural
Buildingsa 1
Structures - - - - - - - - - - - - -
Mechanical
Combustion Engine 3 5 3 - - - - - - - - - -
Lube Oil System 3 3 3 - - - - - - - - - -
Engine Jacket Water 3 3 3 - - - - - - - - - -
Auxiliary Waster Heat 3 3 3 - - - - - - - - - -
Headquarter Hot Water 2 2 2 - - - - - - - - - -
Heat Recovery Boiler 3 3 3 - - - - - - - - - -
OXI/ SCR/ Urea Injection 3 3 3 - - - - - - - - - -
Piping/ Ducting - - - 4 3 3 3 5 3 3 3 3 3
Heat Exchanger - - - 3 3 - 3 - - - - - -
Pump - - - 3 3 4 3 - 3 - - - 3
Vessel/ Tank - - - - - 4 - - 3 3 3 - 3
Absorption Chiller - - - 5 - - - - - - - - -
Centrifuge - - - - - - - - 3 - - - -
Compressor - - - - - - - - - 4 4 - -
Dryer - - - - - - - - - 4 3 - -
Fan/ Air Handling Unit - - - - - - - - - - - 4 -
Electricalb
Generator 3 5 3 - - - - - - - - - -
VFDs - - - - - - - - - - - - -
MCCs 4 4 4 4 - 4 - - - 2 2 4 4
Instrumentation
General / PLCs/ CEMS 5 5 5 5 4 4 4 4 3 5 4 4 3
Please see the comprehensive Acronyms and Abbreviations list for definitions.
a Building is common for all assets.
b Refer to Area 18 (Section 2.2.10) for switchgears, batteries, and other electrical assets.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
2025 Asset Management Plan
40
AREA 16 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 CENTRAL GENERATION
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Gas Engine Generator Set Reliability – Aging components and systems required to
operate the Central Generation (CenGen) engines are creating reliability issues and need to
be addressed.
Continue to perform engine/generator PMs and monitor engine/generator performance. Project J-135B completed overhauling engine/generator set #1 and #3. Project J-135C will
overhaul engine/generator set #2 after J-135B is completed in 2026.
Project J-140 will upgrade engine/generator protection system and diagnostics.
Switchgear Reliability – The switchgears and electrical equipment at the CenGen and
Service Center are aging and need to be replaced for reliability purposes.
Continue to perform switchgear and major electrical equipment PMs, provide as-need CMs,
and monitor equipment performance.
Project J-142 will replace aging and obsolete 12-kilovolt (kV) switchgears.
Plant Water Piping Corrosion – The plant water (that is, cooling water) piping has
corroded and needs to be replaced.
Continue to monitor existing piping and provide as-needed CMs until replacement. Project FE19-02 is replacing all plant cooling water piping in the basement of CenGen.
Backup Battery System Reliability – The batteries used to provide backup power for
switching of the switch gear during a loss of power event have reached the end of their
useful lives.
N/A. Project FR1-0005 is replacing the lead acid batteries and their respective battery chargers
with a suitable backup battery system.
Engine Programmable Logic Controller (PLC) Obsolescence – The existing master and
engine PLCs and Remote Input/Output (RIO) cards are obsolete.
Continue to perform PLC PMs, provide as-needed CMs, and monitor equipment
performance until replacement.
Project J-140 will replace obsolete PLCs and RIO cards with new Modicon M580 PLCs and
new RIO cards.
Engine Protection System Obsolescence and Limited Engine Diagnostics – The
existing engine vibration monitoring systems are aging, obsolete, and lack diagnostic
capability.
Continue to actively monitor obsolete system until replacement. Project J-140 will upgrade the Engine Condition Monitoring System and include diagnostic
capabilities.
Engine Cylinder Pressure Monitoring and Balancing – There is no online engine
cylinder pressure monitoring to assist with engine load balancing and troubleshooting.
N/A. Project J-140 will add pressure sensors to monitor individual cylinder’s pressure.
Exhaust Heat Recovery Boilers Reliability – The boilers need to be inspected both
internally and externally.
N/A. The boilers will be cleaned and inspected through Maintenance Service Contract CS-2025-
650BD.
As-needed repairs will be performed through Maintenance or a separate contract based on
inspection results to improve boiler performance and reliability.
Engine Ignition Control System Obsolescence – The existing engine ignition controls are
aging and obsolete.
Continue to actively monitor the obsolete assets and perform as-needed CMs until
replacement.
MPJ-002 (PRN-00965) is pilot testing a new engine ignition system on Plant 2 Engine 2 to
test compatibility and performance prior to installing new ignition control systems onto each
engine generator set.
Absorption Chiller Obsolescence – The chillers are obsolete and need to be replaced. Continue to actively monitor the obsolete assets and perform as-needed CMs until
replacement.
Perform a planning study (PRN-01034) to determine the best solution and approach to
replace the obsolete chillers.
Replace obsolete chillers with new chillers designed for revised chilled water balance or
with alternative technologies based on planning study recommendations.
Deaerator Reliability – The deaerator system is aging and needs to be replaced to
improve reliability.
Continue to perform PMs, provide as-needed CMs, and monitor equipment performance
until replacement.
Plan a project to replace the deaerator system.
Heating, Ventilation, and Air Conditioning (HVAC) Reliability – The five air handling
units in the CenGen building are aging and need to be replaced to improve reliability.
Continue to perform PMs, provide as-needed CMs, and monitor equipment performance
until replacement.
Plan a project to replace the air handling units.
Continuous Emissions Monitoring System (CEMS) Analyzer Obsolescence – The
analyzers are obsolete and need to be replaced.
Continue to actively monitor the obsolete assets and perform as-needed CMs until
replacement.
Plan a project to replace the obsolete analyzers.
2025 Asset Management Plan
41
AREA 16 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 CENTRAL GENERATION
Current and Future Projects
Project No. Project Title Impacted Facilities
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
36
20
3
7
20
3
8
20
3
9
J-142 Power Distribution Systems and Power Building C Replacements at Plant
No. 1 and No. 2 CenGen Electrical System
FE19-02 CenGen Plant Water Pipe Replacement at Plant No. 1 Plant Water Piping
FE18-06 CenGen Instrument Air Compressor Replacement at Plant No. 1 Instrument Air Compressors
J-135C Engine and Generator Overhauls at Plant Nos. 1 and 2, Phase 2 Engine Generator Set #2
J-140 CenGen Engine Monitoring System Improvements at Plant No. 1 and No. 2 Engine Generator, Heat Recovery System, Waste Heat, Steam,
Chilled Water, Hot Water, Instrument Air
FR1-0005 CenGen and 12kV Service Center Switchgear Battery System Upgrades Battery Backup
J-138 CenGen Facilities and OOBS Seismic Upgrades CenGen Building
MPJ-001 CenGen Exhaust Heat Recovery Boiler Cleaning/Assessment
(Maintenance Service) Heat Recovery System
MPJ-002 (PRN-
00965) CenGen Engine Ignition Control System Obsolescence Replacement Engine Generator
PRN-01034 CenGen Chilled & Hot Water Loops Improvements Study at Plant No. 1 Chilled and Hot Water Loops
FR1-0021 CenGen Basement Access Hatch Fall Restraint at Plant No. 1 and No. 2 CenGen Building
TBD CenGen Underground Storage Tank Assessment at Plant No. 1 and No. 2 CenGen Oil Storage/ Handling
TBD CenGen Deaerator System Replacement at Plant No. 1 Deaerator System
TBD CenGen Starting Air Compressor Overhauls (Maintenance Service) Starting Air Compressors
AI-753 CenGen Building HVAC Replacement at Plant No. 1 HVAC
TBD CenGen Absorption Chiller Replacement Plant No. 1 Absorption Chillers
AI-797 CenGen CEMS Analyzer Replacement Plant No. 1 and No. 2 CEMS
TBD Energy and Digester Gas Master Plan - Revisit CenGen
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
42
Process Schematic
Major Assets
Major Assets Quantities
City Water
Pumps 7
Tanks 3
Piping 10.6 miles
Plant Water
Pumps 4
Strainers 3
Piping 12.5 miles
Reclaimed Water
Piping 5.4 miles
Plant Air
Compressors 4
Plant Air Piping 4 miles
Instrument Air Piping 3.5 miles
AREA 17 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 UTILITIES
2.2.9 Plant No. 1 Utilities
Major Assets Remaining Useful Life
Asset Type
Ci
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y
W
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t
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r
S
y
s
t
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Pl
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W
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P
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Pl
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s
Civil
Piping 3 3 2 3
Structural
Pump Station 1 1 - -
Tanks 2 - - -
Mechanical
Pumps 3 4 - -
Strainers - 3 - -
Compressors - - - 3
Ventilation System 4 4 - -
Electrical
MCCs 4 4 - -
VFDs 4 4 - -
Instrumentation
PLCs, Flowmeters 3 3 - 3
Please see the comprehensive Acronyms and Abbreviations list for definitions.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
2025 Asset Management Plan
43
AREA 17 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 UTILITIES
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Plant/Instrument Air Line Issues – Excessive condensate and oversized
piping are causing a large pressure drop, reducing compressor redundancy.
Continue to actively monitor existing piping and replace as needed. Future small projects will be created to address oversized piping and several dead ends within the system. PRN-
00995, Plant Air Piping Study, will provide recommendations. Project P1-105 will provide new compressors with
filtration and condensate removal.
City Water Redundancy and Aging Pump Station – There is no redundancy
in the system should the pump station fail. The pump station is getting old,
requiring increased maintenance, and will not be reliable long term.
N/A PS23-05, Utility Water Planning Study, will provide options for potable water if no City water is available for long
periods and provide recommendations for rehabilitation or replacement of the pump station.
Plant Water Piping Reliability – There are piping failures throughout the
system due to the corrosive nature of plant water. Current ductile iron pipes
(DIPs) are corroding prematurely. Aging pipes are also a contributing factor.
Pump station reliability needs evaluation.
Continue to actively monitor existing piping and replace as needed. Project FE19-02 will address corroded plant water piping at CenGen, and FE20-05 will address recent plant
water pipe failures at the secondary clarifiers. PS23-05 will provide recommendations for rehabilitation or
replacement of the pump station.
Air Compressor Capacity – Plant and instrument air supply issues exist due to
the lack of air compressors. Current air compressors are not adequate to meet
the current plant needs.
Continue to monitor existing compressors and provide as-needed CMs until
replacement.
Project P1-105 will add two new 100-horsepower (HP) compressors at headworks (one duty and one standby).
FE18-06 will replace the existing 10 HP air compressors at CenGen.
Current and Future Projects
Project No. Project Title Impacted Facilities
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
FE18-06 Instrument Air Compressors at CenGen Instrument Air Piping
P1-105 Headworks Rehabilitation at Plant No. 1 City Water Pump Station, Plant Air Compressors, Plant Air Lines
FE20-05 Plant Water Piping Replacement at Secondary Clarifiers Plant Water Piping
P1-126 Primary Clarifier Replacement and Improvement Plant Water Piping
FE19-02 CenGen Plant Water Pipe Replacement at Plant No. 1 Plant Water Piping
X-124 Fleet Services Rehabilitation/Replacement City Water Piping Replacement
X-038 City Water Pump Station Replacement City Water Pump Station
X-039 Plant Water Pump Station Rehabilitation Plant Water Pump Station
PS23-05 Utility Water Planning Study at Plant Nos. 1 and 2 City and Plant Water Pump Stations
X-017 Primary Sedimentation Basins 6–31 Rehab at Plant No. 1 Plant Water Piping
P1-140 Activated Sludge 1 Rehabilitation at Plant No. 1 Plant Water Piping
PRN-00995 Plant Air Piping Study at Plant Nos. 1 and 2 Plant Air Piping
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
44
Remaining Useful Life of Utility Infrastructure
AREA 17 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 UTILITIES
2025 Asset Management Plan
45
Remaining Useful Life of Utility Infrastructure
AREA 17 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 UTILITIES
Please see the comprehensive Acronyms and Abbreviations list for definitions.
2025 Asset Management Plan
46
Process Schematic
Major Assets
Major Assets Quantities
12kV Transformers 40
Standby Generators 8
12kV Switchgear 14
5kV and 480V Switchgear 42
MCCs 89
VFDs 180
125VDC and 24VDC Battery Systems 25
Uninterruptible Power Supply (UPS) 24
AREA 18 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 ELECTRICAL DISTRIBUTION
2.2.10 Plant No. 1 Electrical Distribution
Major Assets Remaining Useful Life
Asset Type
Se
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i
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e
C
e
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t
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r
Ce
n
G
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PB
-2
PB
-3A
PB
-4
PB
-5
PB
-6
PB
-7
PB
-8
PB
-9
DA
F
T
Bl
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-1
Bl
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-2
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F
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Tier I – 12.47kV Primary Distribution Level
12.47kV Feeders 1 4 4 4 4 4 4 1 1 1 3 4 1 1
12.47kV Switchgears 4 4 4 5 4 4 4 - - - - - 1 1
12.47kV Transfer Switchers 3 - - - - - - - - - - - -
12.47kV Load Interrupter Switches 3 - 4 4 3 - - 1 1 1 3 3 - -
Transformers: 12.47kV/4.16kV - - - - - - - - - - - 2 1 1
Transformers: 12.47kV/480V 4 4 3 3 3 2 3 1 2 1 3 3 1 1
Tier II – 4.16kV Distribution Level
4.16kV Switchgears - - - - - - - - - - - 3 1 -
4.16kV Feeders - - - - - - - - - - - 3 1 -
Tier IV – 480V Distribution Level
480V Switchgears - 4 4 4 - 2 4 1 1 1 3 3 1 1
Transfer Switches 3 - 2 2 4 - 4 - - - 4 4 1 -
Generators - - 5 5 5 - - 1 1 - - 5 - -
Tier V – Uninterruptible Power Supply
UPSs Individual - 2 - 5 - - 4 5 4 4 5 4 3 -
Tier VI – 125VDC and 24VDC Battery Systems
125VDC Chargers 2 2 4 5 - 2 3 3 3 3 4 - 3 1
125VDC Batteries 3 3 4 5 - 3 3 4 4 4 4 - 4 4
24VDC Chargers - 2 4 5 4 - - 3 3 - - 4 - 1
24VDC Batteries - 3 4 5 4 - - 4 4 - - 4 - 4
Standby Generator
Generator Controls - 5 5 5 5 - - 1 1 - - 5 - -
Please see the comprehensive Acronyms and Abbreviations list for definitions.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
2025 Asset Management Plan
47
AREA 18 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 ELECTRICAL DISTRIBUTION
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Variable Frequency Drive Obsolescence – Models across various areas of Plant No. 1
are becoming obsolete and are unsupported by the manufacturer.
Small Projects and Maintenance Projects are currently replacing VFDs as needed based on
urgency.
Develop Service Contract for VFD condition assessment, repairs, and replacements.
480V and 120V Cable Failures – Multiple unexpected power and control cable failures
have occurred within the past few years that indicate there may be underlying duct bank
issues that may cause future failures.
Small Projects and Maintenance Projects (15-pack and informal bid) are currently replacing
failed cables as needed.
Electrical Blanket Repair and Maintenance Contract is in development to replace cables
more efficiently and cost effectively.
Current and Future Projects
Project No. Project Title Impacted Facilities
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
FR1-0005 CenGen and 12kV Service Center Switchgear Battery System Upgrades at Plant No. 1 Plant No. 1 Power Distribution
MP1-015 Turbine Generator Battery Charger Replacement at Plant No. 1 Blower Building 1
FE24-11 Steve Anderson Lift Station VFD Replacement at Plant No. 1 Steve Anderson Lift Station
FR1-0011 P1 VFD Replacement at Plant No. 1 City Water Pump Station, RAS, DAFT, TF
FR1-0023 Secondary Effluent Cable Replacement at Plant No. 1 Secondary Effluent Junction Box Gate Valves
P1-132 Uninterruptable Power Supply Improvements at Plant No. 1 Plant No. 1 Multiple UPS Loads
FR1-0019 Generator Protection Relay Replacements & Add Control Center Backup Power at Plant
No. 1
Power Building 2, 4, 7, 8 Generator Controls, Control
Center
FR1-0024 PB-7 and PB-8 Generator and Centrifuge Motor Disconnect Improvements at Plant No. 1 Power Building 7 and 8 Generator, Centrifuge Motors
P1-105 Headworks Rehabilitation at Plant No. 1 Plant No. 1 Headworks, Bars Screen, Metering Structure,
PBs
J-98 Electrical Power Distribution System Improvements Various Plant No. 1 and Plant No. 2 Conditions-Based
Electrical Distribution Systems
P1-126 Primary Sedimentation Basins Nos. 3–5 Replacement at Plant No. 1 Plant No. 1 Power Distribution
J-142 Power Distribution Systems and Power Building C Replacements at Plant No. 1 and No. 2 Service Center, Central Generation
P1-133 Primary Sedimentation Basins No. 6–31 Reliability Improvements at Plant No. 1 Sludge Pump VFD Replacement
P1-140 Activated Sludge 1 and Secondary Clarifier Rehabilitation PB-2, DAFT, and Blower Building 1 Electrical Equipment
J-124 Digester Gas Facilities Rehabilitation PB-5 MCCs
FE23-10 12kV Switchgear Replacement for PB-5 at Plant No. 1 PB-5 12kV Switchgear
J-133 Laboratory Replacement at Plant No. 1 Lab Power Feed
X-038 City Water Pump Station Rehabilitation at Plant No. 1 City Water Pump Station MCC
X-039 Plant Water Pump Station Rehabilitation at Plant No. 1 PB-6 Electrical Equipment
X-006 Waste Sidestream Pump Station Rehabilitation at Plant No. 1 MCCs, VFDs
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
48
AREA 19 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 OCCUPIED AND POWER BUILDINGS
2.2.11 Plant No. 1 Occupied and Power Buildings
Occupied and Power Building Site Plan at Plant No. 1
Note: Building colors are used to help identify the buildings and do not represent RUL scores.
Major Assets Remaining Useful Life
Buildings Bu
i
l
d
i
n
g
R
o
o
f
Bu
i
l
d
i
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g
El
e
c
t
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i
c
a
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HV
A
C
Se
i
s
m
i
c
(P
S
1
5
-06
)
El
e
v
a
t
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r
Headquarters 1 1 1 - -
Building "Shop" A 1 3 4 3 -
Building "Shop" B 2 4 4 4 -
Fleet Services 3 2 4 4 -
Building 4 2 2 4 - -
Building 1 2 3 - - -
Building 2 2 2 - - -
Building 3 2 2 - 4 -
Building 5 2 2 4 5 -
Building 6 2 3 4 5 4
Building 7 2 2 4 - -
Building 8 2 3 - - -
Cart Barn 4 3 - - -
Laboratory 2 4 3 5 4
Purchasing Building 5 4 4 3 -
Warehouse Building 1 4 4 3 -
Purchasing Building Conference Rm 1 2 4 - -
Control Center 3 4 5 5 4
12KV Distribution Center 4 - 3 - -
12KV Service Center 3 - 2 5 -
Power Building 2 4 - 3 2 -
Power Building 3A 3 - 3 - -
Power Building 4 3 - 3 2 -
Power Building 5 3 - 3 2 -
Power Building 6 3 - 3 2 -
Power Building 7 5 - 3 - -
Power Building 8 5 - 3 - -
Power Building 9 1 - 3 - -
Please see the comprehensive Acronyms and Abbreviations list for definitions.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
2025 Asset Management Plan
49
AREA 19 ASSET MANAGEMENT SUMMARY – PLANT NO. 1 OCCUPIED AND POWER BUILDINGS
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Seismic Deficiencies – A recent planning study (PS15-06) recommended seismic retrofits to several buildings to
avoid serious damage during an earthquake
N/A Project P1-137 will make seismic modifications to several support buildings in Plant No. 1.
Aging Elevators – Elevators at Building 6, Control Center, and Lab need to be rehabilitated and modernized. N/A As the building elevators age and are less reliable over time, projects are being created to address
modernization and upgrades as needed. FE24-08 is one such project.
Building Roofs Reaching Their Useful Life – Power Buildings 7 and 8 and Purchasing Building roofs need to be
replaced.
N/A As roofs reach the end of their useful life and are no longer repairable, Small Projects will be created to
replace them.
Electric Vehicle Fleet Require Service Center – As more of the OC San District fleet becomes electric, there is
a need for a specialized service center.
N/A PS23-01 will provide recommendations on rehabilitating the existing fleet services building or building a new
facility to address the servicing of electric vehicles.
Current and Future Projects
Project No. Project Title Impacted Facilities
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
FE23-08 PB-7 and PB-8 HVAC Replacement at Plant No. 1 Power Buildings 7 and 8
PS23-01 Fleet Facilities Improvements Study Fleet Building
PRN-00955 Purchasing, PB-7, and PB-8 Roof Replacement Purchasing Building, Power Buildings 7 and 8
PRN-00960 Control Center HVAC Replacement Control Center
X-124 Electric Vehicle Fleet Services Building Fleet Building
P1-105 Headworks Rehabilitation at Plant No. 1 Power Buildings 3 and 3A
P1-137 Support Building Seismic Improvements at Plant No. 1 Fleet Building, Control Center, Rebuild Shop, Shop A, Shop B,
12kV Service Center, Buildings 5 and 6
J-133 Laboratory Replacement at Plant No. 1 Laboratory
P1-141 Administration Facilities Demolition Administration Building
FE24-08 Building 6, Control Center, Lab Elevator Modernization Building 6, Control Center, Laboratory
P1-140 Activated Sludge 1 Rehabilitation at Plant No. 1 12kV Distribution Center, Power Building 2
J-141 Public Address System Replacement Plant 1 Plantwide
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
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2025 Asset Management Plan
51
Plant No. 2 Area Asset Management
Summaries
2025 Asset Management Plan
52
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2025 Asset Management Plan
53
Process Schematic
Major Assets Quantities
Bar Screens
Bar Screen 6
Screening Washer
Compacter 3
Screenings Conveyor 4
Control Gate 14
Major Assets Quantities
Main Sewage Pump
Pump 7
Control Gate 16
Splitter and Metering
Flow Meter 3
Control Gate 26
Major Assets Quantities
Grit Basins
Grit Basins 6
Grit Slurry Pump 6
Grit Cyclone/Classifier 4
Control Gate 12
Major Assets Quantities
Headworks Odor Control
Supply Fan 21
Biotower 13
Chemical Scrubber 8
Recirculation Pump 42
Bleach Tank 1
Major Assets Quantities
Headworks Odor Control (Cont’d)
Bleach Pump 16
Acid Tank 1
Acid Pump 2
Caustic Tank 1
Major Assets
Major Assets Quantities
Metering and Diversion Structure
Influent Flow Meter 4
Control Gate 7
Trunk Odor Control
Supply Fan 3
Biotower 3
Recirculation Pump 6
AREA 20 ASSET MANAGEMENT SUMMARY – PLANT NO. 2 PRELIMINARY TREATMENT
2.2.12 Plant No. 2 Preliminary Treatment
Note: Process Schematic is general in nature. A detailed process diagram is provided in Appendix D.
Major Assets Remaining Useful Life
Asset Type
Headworks
Tr
u
n
k
l
i
n
e
O
d
o
r
Co
n
t
r
o
l
He
a
d
w
o
r
k
s
O
d
o
r
Co
n
t
r
o
l
PB
-D
Di
s
t
r
i
b
u
t
i
o
n
Ce
n
t
e
r
H
Me
t
e
r
i
n
g
&
Di
v
e
r
s
i
o
n
Ba
r
S
c
r
e
e
n
s
Ma
i
n
S
e
w
a
g
e
Pu
m
p
Gr
i
t
B
a
s
i
n
s
Sp
l
i
t
t
e
r
&
Me
t
e
r
i
n
g
Civil
Effluent Piping - - - - 1 - - - -
Structural
Building 1 1 1 1 1 - - 1 1
Concrete and Tanks 1 1 1 1 1 2 2 - -
Mechanical
Piping and Valve 2 - 2 2 2 - - - -
Pump - - 4 3 - 3 3 - -
Bar Screens - 4 - - - - - - -
Screening Washer Compactor - 3 - - - - - - -
Grit Cyclone/Classifier - - - 3 - - - - -
Conveyor - 3 - 3 - - - - -
Fans and Blower - - - - - 3 3 - -
Control Gate 3 3 3 3 3 - - - -
Media - - - - - 5 5 - -
Electrical
VFDs - - 5 - - 5 5 - -
MCCs - - - - - - - 4 2
Instrumentation
PLCs, Flow Meters 3 3 3 3 3 3 3 - -
Please see the comprehensive Acronyms and Abbreviations list for definitions.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
2025 Asset Management Plan
54
AREA 20 ASSET MANAGEMENT SUMMARY – PLANT NO. 2 PRELIMINARY TREATMENT
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Bar Screens Reliability – Bar screens have issues with misalignment and worn parts due
to operating more frequently than intended and slugs of grit causing bending and
misalignment of parts.
Maintenance purchased and received two new bar screens. Bar screen #3 is currently in
the process of being replaced with one of the new ones. The other will be available as a
shelf spare.
O&M plans for more frequent flushing and planned maintenance to prevent and minimize
damage to parts.
Washer Compactor Redundancy – On August 21, 2021, Plant No. 2 experienced a slug
of rags that plugged two washer compactors. An additional plugging issue occurred on one
of the units on February 14, 2025, which was challenging to address due to the many man
hours required by Maintenance to unplug the unit. With the plant operating in separated
mode following the completion of P2-122, redundancy has been reduced, with one swing
unit on standby available for the non-reclaimable or reclaimable stream.
Continue to address plugging through Maintenance work orders and performing PMs. An
emergency mechanical services contract will be bid in fall/winter 2025 to provide an
additional labor resource to expedite response and mitigation time for future issues.
Planning Study, PS24-07 is currently in the development phase to bid an engineering
consultant in fall 2025. The study will research and develop concepts to increase
redundancy to the system by adding a fourth unit, identify newer washer compactor
equipment models that are less prone to plugging, and provide other options to increase the
reliability of the washer compactor system and provide a feasible solution.
Main Sewage Pump (MSP) Vibration Monitoring System – The current vibration
monitoring system is obsolete. It needs to be modernized to continue to protect both pumps
and motors.
The Reliability Group uses infrared thermometers to measure temperature of the asset and
manual vibration readings to cover the deficiency.
FE24-07 is currently in the development phase to bid an engineering consultant to assist in
replacement of the obsolete system with the Bently Nevada Orbit 60.
Main Sewage Pumps Condition – The five large main sewage pumps and warehouse
spare pump have worn parts and are in need of repair and replacement of parts such as
mechanical seals, bearings, shaft sleeves, and O-rings. MSP-7 failed in operation after
being out of service during repair of the VFD. The MSP was transported to a pump repair
facility for inspection and repairs under a maintenance work order.
Continue to monitor and provide short-term maintenance repairs. MP2-018, Main Sewage Pumps Repair at Plant No. 2, is in progress with a pump repair
facility to make repairs on the spare large pump and MSP-1. A future project will be
requested to apply similar repairs to the remaining MSPs (5 and 6).
Current and Future Projects
Project No. Project Title Impacted Facilities
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
FE24-07 Main Sewage Pump Vibration Monitoring System Modernization at Plant No. 2 Influent PS
PS24-07 Screenings Washer Compactor Improvements Study at Plant No. 2 Screenings Washing
MP2-018 Main Sewage Pumps Repair at Plant No. 2 Influent PS
X-030 Headworks Rehabilitation at Plant No. 2 Headworks
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
55
Process Schematic
Major Assets
Major Assets Quantities
Primary Basin – A-Side
Primary Basin 4
Sludge/Scum Collectors 4
Sludge/Scum Pump 8
Supply Fan 6
Primary Basin – B-Side
Primary Basin 5
Sludge/Scum Collectors 5
Sludge/Scum Pump 10
Supply Fan 7
Major Assets Quantities
Primary Basin – C-Side
Primary Basin 5
Sludge/Scum Collectors 5
Sludge/Scum Pump 10
Supply Fan 8
North Scrubber Complex
Chemical Scrubber 7
Bio Scrubber 1
Recirculation Pump 16
Supply Fan 8
Caustic Tank 1
Major Assets Quantities
South Scrubber Complex (Continued)
Caustic Feed Pump 8
Acid Tank 1
Acid Feed Pump 2
Bleach Tank 1
Bleach Feed Pump 3
Polymer System
Polymer Bulk Tank 3
Polymer Bulk Transfer Pump 4
Polymer Mix Tank 2
Major Assets Quantities
North Scrubber Complex (Continued)
Acid Feed Pump 2
Bleach Tank 1
Bleach Feed Pump 14
Caustic Feed Pump 16
Acid Tank 1
Acid Feed Pump 2
South Scrubber Complex (SSC)
Supply Fan 4
Scrubbers 4
Recirculation Pump 8
Caustic Tank 1
Major Assets Quantities
Polymer System (Continued)
Polymer Feed Pump 4
Ferric System
Ferric Bulk Tank 2
Ferric Feed Pump 6
Distribution Boxes
Structure 3
Sluice Gates 24
Waste Sidestream Pump Station C
Waste Sidestream Pump 4
AREA 21 ASSET MANAGEMENT SUMMARY – PLANT NO. 2 PRIMARY TREATMENT
2.2.13 Plant No. 2 Primary Treatment
Major Assets Remaining Useful Life
Asset Type
A-Side B-Side C-Side
NS
C
SS
C
Po
l
y
m
e
r
S
y
s
t
e
m
Fe
r
r
i
c
S
y
s
t
e
m
Di
s
t
r
i
b
u
t
i
o
n
B
o
x
WS
S
P
S
-C
PS
B
-D
PS
B
-E
PS
B
-F
PB
-G
PB
-H
PB
-I
PB
-J
PB
-K
PB
-L
PB
-M
PB
-N
PB
-O
PB
-P
PB
-Q
Civil
Effluent Piping 5 5 5 5 4 4 4 4 4 4 4 4 4 4 - - - - - 2
Structural
General 5 5 5 5 3 3 3 3 3 3 2 2 2 2 3 4 3 2 4 1
Dome 5 5 5 5 3 3 3 3 3 3 3 3 3 3 - - - - - -
Mechanical
Piping 4 4 4 4 4 4 4 4 4 4 3 3 3 3 3 4 3 2 3 2
Internal Mechanism and Gates 5 5 5 5 4 4 4 4 4 4 5 4 4 4 - - - - 5 -
Fans and Pumps 5 5 3 3 3 3 3 3 5 5 2 - 2
Electrical
VFDs - - - - - - - - - - - - - - - - 5 - - -
MCCs 3 3 3 3 3 3 3 3 3 3 3 3 3 3 4 5 - - - -
Instrumentation
PLC, Flow Meters 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 5 3 - 3
Please see the comprehensive Acronyms and Abbreviations list for definitions.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
2025 Asset Management Plan
56
AREA 21 ASSET MANAGEMENT SUMMARY – PLANT NO. 2 PRIMARY TREATMENT
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Reliability of A-Side Primary Clarifier Basins – The A-side basins were built in the
1960s. Aluminum dome supports for A-Side Primary Basins E and G are corroded.
Currently, Basins F and G are not available due to loss of structural integrity from severe
corrosion of the rotating mechanisms. Availability of A-side basins is critical to process
non-reclaimable flow until P2-98A commissions four new primary basins.
FE23-09 (formerly MP2-007) is in progress to rehabilitate failed and corroded
rotating mechanisms at Primary Clarifiers F and G.
P2-98A is in the construction phase to replace all four A-side primary basins.
Reliability of B- and C-Side Primary Clarifier Basins – B-side and C-side primary basins
were built in the 1970s and 1980s, respectively. These basins are close to the end of their
useful lives and require major rehabilitation to continue to operate reliably for next 30+
years.
A main component of primary clarifier operability is the rotating mechanism drives. In April
2024, Maintenance staff observed noise from the drive at Primary Clarifier N, and OC San
coordinated efforts for the Original Equipment Manufacturers (OEMs) to provide an
assessment and identify issues.
Condition assessments are currently being conducted on each clarifier, including
its rotating mechanisms, to verify RUL and timing of the P2-133 project, and to
identify short-term projects to be completed ahead of P2-133. Assessments are
scheduled to be completed by fall 2025.
PRN-1020 will replace three clarifier drives (J, P, and Q) with new drives. The
existing drives will be rebuilt to replace two other B/C-side clarifiers, selected
based on criticality. The remaining rebuilt drive will be retained as a shelf spare.
Following the OEM’s assessment on the drive for Primary Clarifier N and
recommended replacement of the drive, MP2-023 is currently in progress to
replace the drive.
P2-133 will provide long-term rehabilitation on B- and C-side primary basins.
Functionality of Distribution Box B Gates – Distribution Box B has 10 leaking slide gates
due to the absence of side seals in the original design.
One gate will be repaired and have seals installed as a test. The remaining gates
will be repaired following a successful installation/test under the Planning task
order.
P2-133 will provide long-term rehabilitation on B- and C-side primary basins and related systems
such as Distribution Box B.
Condition of Primary Effluent Junction Boxes – Junction Boxes 2, A, B, C, D, and F
were constructed in the 1970s, and Junction Box E was built in 1983. Several of these
structures have leaks at the pressurized manhole covers and will need repair or
rehabilitation. Primary Effluent Junction Box 2 was inspected, and a heavily corroded roof
structure was identified.
P2-98A will address the corroded roof for Primary Effluent Junction Box 2, but
other effluent junction boxes (JB-A to JB-F), which have pressure manhole covers,
are in the process of being assessed.
N/A until short-term action to perform condition assessment is completed.
Reliability of Polymer System – The polymer system was built in 1988, and the RUL is
limited. Instrumentation is obsolete and parts are no longer readily available.
The replacement of instrumentation and associated electrical has been added to
Project P2-135, Chemical Systems Rehabilitation at Plant No. 2.
The full system will be replaced under P2-133.
Current and Future Projects
Project No. Project Title Impacted Facilities
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
P2-98A A-Side Primary Clarifiers Replacement at Plant No. 2 A-Side Primary Clarifiers
P2-135 Chemical Systems Rehabilitation at Plant No. 2 Anionic Polymer System
FE23-09 Primary Clarifiers F and G Rotating Mechanisms Rehabilitation at Plant No. 2 Primary Clarifier F and G
MP2-023 Primary Clarifier N Drive Replacement Primary Clarifier N
PRN-1020 B- and C-Side Primary Clarifier Drive Replacements at Plant No. 2 B- and C-Side Primary Clarifiers
P2-133 B- and C-Side Primary Clarifiers Rehabilitation at Plant No. 2 B- and C-Side Primary Clarifiers
X-030 Headworks Rehabilitation at Plant No. 2 Ferric Chloride and WSSPS-C
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
57
Major Assets
Major Assets Quantities
Primary Effluent Pump Station
Building 1
Wet Well 1
Pumps 4
Bridge Crane 1
Aeration Basins
Basins 8
Surface Aerators 32
Inlet Gates 8
Purge Air Fans 4
Major Assets Quantities
Secondary Clarifiers A-L
Basins 12
Inlet Gates 36
Sludge Collectors 24
Secondary Effluent Junction Box (SEJB)
Structure 1
Control Gate 1
Major Assets Quantities
East RAS/WAS PS
RAS Pumps 3
WAS Pumps 2
West RAS/WAS PS
RAS Pumps 3
WAS Pumps 2
Channel Air Blowers 2
Oxygen Facility
LOX Storage Tanks 2
Vaporizer 6
Major Assets Quantities
DAFTs A-D
Concrete Tanks 4
Mechanical Sweep 4
Recycle Pumps 6
Saturation Tank 4
TWAS Pumps 8
DAFTs Polymer System
Storage Tank 1
Aging Tank 2
Major Assets Quantities
DAFTs Polymer System (Continued)
Storage Tank Rec. Pumps 2
Blend Pumps 2
Feed Pumps 6
DAFTs Odor Control
Biofilters 3
Foul Air Fans 3
Waste Sidestream Pump Station
Pumps 3
AREAS 22 AND 23 ASSET MANAGEMENT SUMMARY – PLANT NO. 2 SECONDARY TREATMENT – ACTIVATED SLUDGE AND OXYGEN FACILITY
2.2.14 Plant No. 2 Secondary Treatment – Activated Sludge and Oxygen Facility
Process Schematic
Major Assets Remaining Useful Life
Asset Type
PE
P
S
Ae
r
a
t
i
o
n
Ba
s
i
n
s
Se
c
o
n
d
a
r
y
Cl
a
r
i
f
i
e
r
s
A
–L
SE
J
B
Ea
s
t
R
A
S
/
W
A
S
P
S
We
s
t
R
A
S
/
WA
S
P
S
Ox
y
g
e
n
Fa
c
i
l
i
t
y
DA
F
T
s
A
–D
DA
F
T
s
P
o
l
y
m
e
r
Sy
s
t
e
m
DA
F
T
s
O
d
o
r
Co
n
t
r
o
l
WS
S
P
S
-A
Civil
Effluent Piping 4 - 3 3 2 2 3 - - - 4
Structural
Building 3 - - - 3 3 - 1 - - -
Structure 3 4 3 3 - - 3 1 1 1 -
Mechanical
Pump 4 - - - 3 3 - 2 2 - 3
Aerator - 4 - - - - - - - - -
Piping and Valve 3 4 3 3 3 3 3 2 2 3 3
Clarifier/DAFT Moving Mechanism - - 4 - - - - 4 - - -
Channel Air Blower - - - - - 3 - - - - -
Control Gate - 4 2 3 - - - - - 2 3
LOX Facility - - - - - - 3 - - - -
HVAC and Ventilation 3 - - - 3 3 - - - - -
Electrical
MCCs 4 3 3 - 3 3 4 1 1 1 1
VFDs 5 - - - 5 5 - 4 4 - -
Instrumentation
PLC and Flow Meter 3 4 3 - 3 3 4 3 3 - 3
Please see the comprehensive Acronyms and Abbreviations list for definitions.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
2025 Asset Management Plan
58
AREAS 22 AND 23 ASSET MANAGEMENT SUMMARY – PLANT NO. 2 SECONDARY TREATMENT – ACTIVATED SLUDGE AND OXYGEN FACILITY
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Primary Effluent Pump Station (PEPS) – Obsolete VFD parts; aged PEPS pumps and
corrosion on suction pipes; missing flapper gates on the area drain inlets to the wet well;
corroded individual pump discharge header; poor coating condition on pump discharge
header.
Perform condition assessment of the discharge header and
replace the pipes as incidental repair. Pump #3 discharge header
condition assessment and replacement completed in 2025.
FE19-08 (combined with FR1-011) will replace the PEPS VFDs.
MP2-0010 is scoped to overhaul Pumps #1, #2, and #3. Pump #3 was completed in Aug-2025, Pump #1 will be
removed in fall 2025, and the Pump #2 overhaul will start in 2026, when Pump #1 is back online, and be completed in
2027. (Pump #4 overhaul was completed in 2022.)
X-052 will replace the PEPS pumps with all electrical works including switchgears, rehabilitate the major discharge
header, and replace the missing flapper gates.
Aeration Basin Reliability – Concrete deck cracking and structural integrity concerns;
aerator motor corrosion and oxygen piping corrosion; aged oxygen analyzer panels and
no air conditioning.
Continue the aerator motor rebuild as needed. P2-136 will replace all oxygen piping, perform structural rehabilitation of the aeration basins, replace all aerators, and
replace all inlet gates and oxygen analyzer panels.
Secondary Clarifiers – Collapsed mechanisms in Clarifiers D, G, and L; unsafe access
into clarifier basins; scum accumulation and nocardia growth issue (scum is currently
flowing to WSSPS-A and then is pumped back to PEPS to keep it in the non-reclaimable
stream); some handrails do not meet Occupational Safety and Health Administration
(OSHA) requirements.
A temporary bleach tote was installed for injection to WSSPS wet
well for nocardia control. Maintenance will route a permanent
bleach line to replace this tote.
A vactor truck will remove scum.
FR2-0031 will provide a temporary solution to reroute the scum to DAFTs.
P2-136 will replace the non-compliant handrails.
FE24-10 will rebuild Clarifiers D, G, and L and add an alignment monitoring system.
P2-143 will route WSSPS-A discharge to the new A-side primary basin.
RAS/WAS Pump Station Reliability and Sizing – Obsolete VFDs; aged pumps; seismic
risks; WAS pumps are oversized to cover low-flow condition.
Continue to complete the pump overhaul being led by
Maintenance.
FE19-08 (FR1-011) will replace the RAS and WAS VFDs.
X-107 will add structural improvements to mitigate seismic risks at East and West RAS/WAS PSs.
X-052 will replace all RAS and WAS pumps and will consider WAS pumps to cover low-flow conditions.
Liquid Oxygen (LOX) Supply and Storage Issues – LOX Tank B is over 40 years old
and at the end of its useful life.
Continue the maintenance activities to maintain the temporary
LOX trailer until Tank B replacement.
FE21-07 is in the final completion phase of construction for Tank A replacement. FE22-02 is in the construction phase to
replace LOX Tank B.
P2-142 will install Vacuum Swing Adsorption-type on-site oxygen generation units.
WSSPS-A Vulnerability – Flooding of the pump dry well has occurred in the past causing
WSSPS pump motor damage.
Maintain the sump pump to avoid flooding; rebuild the main
pumps as needed.
P2-143 will replace the pumps with dry pit submersible types, and P2-98A will install new discharge piping to route the
discharge to the new A-side primary basin.
DAFTs Mechanism Corrosion and Lack of Safe Access, and DAFT D Seismic Issues
– DAFTs A and D condition assessments found mechanisms severely corroded. DAFT D
structure is vulnerable to a seismic event. DAFT mechanisms lack fall protection tie-off
points for maintenance activities.
Conduct a condition assessment and coat DAFT interior
mechanism based on the assessment findings. (DAFT A and D
coating was completed in 2025, and coating work will continue in
2026 to complete DAFT B and C.)
X-107 will add structural improvements to mitigate seismic risks at DAFT D.
FR2-0023 is under construction to install fall protection tie-off points.
Current and Future Projects
Project No. Project Title Impacted Facilities
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
MP2-0010 PEPS Pump #1, #2, and #3 Overhaul PEPS
FR2-0023 Activated Sludge Clarifier Entry Improvements Secondary Clarifiers; DAFTs
FE19-08 Plant No. 1, Plant No. 2, Collections VFD Drives Replacement PEPS, RAS, RSS Pump Stations
P2-136 Activated Sludge Aeration Basin Rehabilitation AS Plant
X-052 Activated Sludge RAS/WAS/PEPS/Vaporizers Rehabilitation AS Plant
FE21-07 LOX Tank A Replacement LOX Facility
FE22-02 LOX Tank B Replacement LOX Facility
FR2-0031 Activated Sludge System Scum Rerouting AS Plant
FE24-10 Activated Sludge Clarifier D, G, and J Equipment Replacement Secondary Clarifiers
P2-136 Activated Sludge Aeration Basin Rehabilitation AS Plant
P2-142 Oxygen Gas Generation Facility LOX, AS Plant
P2-143 Waste Sidestream Pump Station A Improvements WSSPS A
X-107 Seismic Improvements to DAFTs Area DAFT D, East and West RAS/WAS PSs
X-052 Activated Sludge RAS/WAS/PEPS/Vaporizers Rehabilitation AS Plant
TBD Activated Sludge Facility Replacement Planning Study AS Plant
X-114 Activated Sludge Facility Replacement at Plant No. 2 AS Plant Project plan to start in 2041 with construction from 2046 to 2052
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
59
Process Schematic
Major Assets
Major Assets Quantities
Trickling Filter Pump Station
Building 1
Pumps 6
Trickling Filters A–C
Basins 3
TF Media multiple
Rotary Distributor 3
Recirculation Fans 6
Foul Air Fans 3
Drain Gates 3
Major Assets Quantities
SC/SR and ML Channel
Structures 4 SCRs, 4 SRRs, 2 MLs
Control Gates multiple
Diffusors multiple
Blower/WSS PS Building
Building 1
SR Blowers 3
SC Blowers 3
WSS Pumps 3
Major Assets Quantities
Secondary Clarifiers A–F
Basins 6
Sludge Collector 6
Scum Pumps 6
RSS PS-A
Buildings 1
RSS Pumps 4
Major Assets Quantities
RSS PS-B
Buildings 1
RSS Pumps 4
RSS PS-C and Electrical Room
Buildings 1
RSS Pumps 4
Major Assets Quantities
Odor Control Facility
Chemical Scrubbers 3
Carbon Units 3
Chemical System
Bleach Storage Tanks 2
Caustic Storage Tank 1
Bleach Pumps 7
Caustic Pumps 6
AREA 22 ASSET MANAGEMENT SUMMARY – PLANT NO. 2 SECONDARY TREATMENT – TRICKLING FILTERS AND SOLIDS CONTACT
2.2.15 Plant No. 2 Secondary Treatment – Trickling Filters and Solids Contact
Major Assets Remaining Useful Life
Asset Type
TF
P
S
&
E
l
e
c
.
R
o
o
m
Tr
i
c
k
l
i
n
g
F
i
l
t
e
r
s
A
–C
So
l
i
d
s
C
o
n
t
a
c
t
&
Bl
o
w
e
r
s
WS
S
P
S
Se
c
o
n
d
a
r
y
C
l
a
r
i
f
i
e
r
s
A–F
RS
S
P
S
-A
RS
S
P
S
-B
RS
S
P
S
-C
&
E
l
e
c
.
Ro
o
m
Od
o
r
C
o
n
t
r
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F
a
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i
l
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y
Ch
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a
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F
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Civil
Effluent Piping 2 2 2 2 2 2 2 2 2 2
Structural
Building 1 - - 1 - 1 1 1 - -
Structure 1 1 1 - 1 - - - 2 2
Mechanical
Pump 2 - - 2 2 3 3 3 2 3
TF Rotary Distributor - 3 - - - - - - - -
TF Media - 3 - - - - - - - -
Clarifier Sludge Collector - - - - 4 - - - - -
Blower and Fan - 2 - 2 - - - - 2 -
Control Gate - 3 3 3 3 - - - - -
Piping and Valve 2 2 2 2 2 2 2 2 2 2
Fine Buddle Diffusor - - 2 - - - - - - -
HVAC and Ventilation 2 - - 2 - 2 2 2 - -
Electrical
MCCs 1 1 1 1 1 1 1 1 1 1
VFDs 3 4 - 4 - 4 4 4 4 4
Instrumentation
PLCs and Flow Meters 3 3 - 3 3 3 3 3 3 3
Please see the comprehensive Acronyms and Abbreviations list for definitions.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
2025 Asset Management Plan
60
AREA 22 ASSET MANAGEMENT SUMMARY – PLANT NO. 2 SECONDARY TREATMENT – TRICKLING FILTERS AND SOLIDS CONTACT
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Trickling Filter Pump Station Back-up Power – No backup power to Trickling
Filter Pump Station (TFPS); pump failure could result in primary effluent to
ocean outfall.
N/A J-117B will provide a plantwide load-shedding system to power critical Distribution Center J loads from CenGen.
Secondary Clarifier Corrosion and Damage – A condition assessment was
done on Clarifiers B and D. Corroded areas have been discovered on walkways
and clarifier moving mechanisms.
Maintenance projects will repair and replace parts. The Coating Program is
working on coating the walkways and moving mechanism parts.
X-031 will perform a major rehabilitation of the secondary clarifiers.
Return Secondary Sludge (RSS) Pump Damage – Several RSS pumps need
to be removed for overhaul due to damage related to clarifier broken parts.
Overhauling pumps, repairing clarifier, and purchasing two spare RSS pumps. X-031 will perform a major rehabilitation of the secondary clarifiers.
Solids Contact/Sludge Reaeration Biomass Recycling – Using temporary
piping to route the area drain pump station to SC/SR basins instead of
headworks to keep the microorganisms in the biological process area.
Maintenance will continue to maintain existing hose. PRN-00703 will reroute area drain PS discharge to SC/SR basins instead of headworks. Handed off to the Project
Management Office group as Facilities Engineering project.
Trickling Filter Snail Control – Signs of snail shell accumulation at process
area and excessive wearing on RSS and waste secondary sludge (WSS) pipes.
Shells were found in long outfall pipeline.
Operations and Asset Management will continue to monitor the problem. Changed from 25% caustic injection to 50%.
PS18-10 recommended to change back to original design of flooding with 50% caustic at shorter duration. Need to
schedule flooding test.
Current and Future Projects
Project No. Project Title Impacted Facilities
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
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20
3
1
20
3
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20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
MP2-031 Trickling Filter Clarifier B Repair Clarifier B
PRN-00703 Trickling Filter Process Drain Improvements TF/SC
J-117B Outfall Low Flow Pump Station DC-J, TFPS
X-031 TF/SC Rehabilitation TF/SC facility
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
61
Process Schematic
Major Assets
Major Assets Quantities
Ocean Outfall Booster Station
Pump 5
Wingwall Structure 1
Gate 3
Junction Boxes
Junction Boxes 4
Wingwall Structure 1
Gate 13
Major Assets Quantities
Effluent Pump Station Annex
Pump 3
Gate 14
Disinfection Facility
Sodium Bisulfite Tank 3
Sodium Bisulfite Feed Pump 6
Bleach Tank 6
Bleach Feed Pump 8
Major Assets Quantities
120" Ocean Outfall
Port Hole 500
Manhole Cover 47
78" Ocean Outfall
Port Hole 125
Manhole Cover 14
Major Assets Quantities
Land Outfalls
Surge Tower 2
Valve 2
Sample Building 1
Flowmeters 3
Beach Box 1
AREA 24 ASSET MANAGEMENT SUMMARY – PLANT NO. 2 EFFLUENT DISPOSAL
2.2.16 Plant No. 2 Effluent Disposal
Major Assets Remaining Useful Life
Asset Type
OO
B
S
Junction Boxes
EP
S
A
Di
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S
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Land Outfalls
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JB
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Civil
Effluent Piping 1 2 2 4 2 2 - 1 2 1 2 4 -a
Structural
Structures, Buildings 4 2 2 4 2 2 2 1 2 1 2 4 1
Mechanical
Pumps, Fans 3 - - - - 2 2 - - - - - -
Gates/Valves 5 3 3 3 3 3 - 3 3 - - - -
Pipes 2 2 2 2 2 2 3 1 2 1 1 4 -
Tank - - - - - - 5 - - - - - -
Manhole Covers - - - - - - - - - - - 4 4
Ballast - - - - - - - - - - - 4 4
Electrical
VFDs 5 - - - - 5 - - - 5 - - -
MCCs 5 - - - - 3 - - - 3 - - -
Instrumentation
PLC, Flow Meters 5 - - - - 3 4 3 3 3 - - -
Actuators 4 4 4 4 4 4 - 4 4 - - - -
Please see the comprehensive Acronyms and Abbreviations list for definitions.
a See Key Issue regarding condition
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
2025 Asset Management Plan
62
AREA 24 ASSET MANAGEMENT SUMMARY – PLANT NO. 2 EFFLUENT DISPOSAL
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
OOBS and Effluent Pump Station Annex (EPSA) Operation and Maintainability Strategy –
After J-117B completion, the Low Flow Pump Station will be the primary system of operation for final
effluent discharge pumping, with OOBS and EPSA on standby for service during peak wet weather
flows (PWWFs). EPSA will function as the secondary backup system, and it will be critical to have a
modified maintenance plan to ensure its reliability and readiness for service when needed.
Continue current maintenance strategy for EPSA and OOBS. A future planning study will be created to identify operational and maintenance strategies
for OOBS and EPSA.
Condition of 120-inch Long Outfall – Planning Study PS18-09, Ocean Outfall Condition
Assessment and Scoping Study, performed a detailed inspection of the interior and exterior of the
outfall, the ballast, and all associated components from the beach box to the end flap gate. The
study identified 10 required project elements, four of which were immediate needs that were added
as tasks to the project and resolved. However, six project elements remain that need to be
addressed (see Long-Term Actions and Recommendations for details).
N/A Project J-137 will address the remaining project elements identified from PS18-09:
• Remove debris blocking diffuser access
• Replace inspection opening hold-down hardware
• Add additional ballast rock in areas identified by 3-D bathymetry survey • Replace existing manhole covers and appurtenances • Remove outfall sediment deposits
• Replace flap gate
Condition of 78-inch Short Outfall – The short outfall was last used in 2012, and its condition is
largely unknown. The U.S. Environmental Protection Agency recently added NPDES requirements
for external inspection of the short outfall every 2.5 years.
External remotely operated vehicle inspection and reporting on the marine portion
of the short outfall was completed in July 2023 and concluded that there were no
significant observations requiring immediate attention or action.
J-137 will provide rehabilitation of the 120-inch Ocean Outfall as well as inspection and
recommended repairs on the 78-inch Outfall.
Deterioration of Emergency Overflow Wingwalls – The two emergency overflow weirs allow
emergency overflow discharges to the Santa Ana River via concrete wingwall structures.
Investigations performed under PS17-10 concluded that both structures are gradually deteriorating
and if not addressed soon, could require substantial rehabilitation within 6 to 7 years.
N/A P2-139 scope is being updated to from a rehabilitation project to a replacement project,
which will include design to meet current seismic standards.
Reliability of Sodium Bisulfite System (SBS) – The SBS has only been utilized a few times since
2015. Prior to this, higher discharges of effluent to the ocean outfall required dechlorination of
disinfected effluent. The infrequent usage of the system led to sodium bisulfite crystallization in
tanks, piping, and other appurtenances. Additionally, the equipment at the station is in poor
condition and overdesigned for its current usage.
Installation of a tank-level transmitter along with associated wiring and conduit is in
progress. A recirculation loop was installed from the existing pumps to the
temporary tank to prevent crystallization of sodium bisulfite within the tank. This
system will be used temporarily if needed during construction activities of P2-135
and J-137.
P2-135 will replace the sodium bisulfite chemical feed and storage system.
Obsolescence of Gate and Valve Actuators – All actuators in Area 24 are obsolete. Some are
failing and have been replaced.
OC San will monitor conditions for actuators and will note which ones are difficult to
operate during regular PM activities. Since it would be a substantial effort to replace
all actuators, a path for replacement/repair will be determined on a case-by-case
basis depending on criticality.
N/A
Current and Future Projects
Project No. Project Title Impacted Facilities
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
J-117B Outfall Low Flow Pump Station OOBS and New Low Flow Pump Station
P2-135 Chemical Systems Rehabilitation at Plant No. 2 Sodium Bisulfite Station
P2-139 Santa Ana River Wingwall Rehabilitation OOBS and JB-A
J-137 Ocean Outfalls Rehabilitation 120" and 78” Ocean Outfall
J-138 CenGen Facilities and OOBS Seismic Upgrades OOBS
PS23-03 2025 Outfall Initial Dilution Model 120" and 78" Ocean Outfalls
TBD Ocean Outfall Land-Section Rehabilitation Study 120" and 78" Ocean Outfalls
X-098 EPSA Rehabilitation EPSA
X-115 Short Outfall Rehabilitation 78” Ocean Outfall
X-116 Outfall Land Section Rehabilitation 120” Ocean Outfall
PRN-00381 42-inch Emergency Overflow Line 42” Overflow from JB-A to Headworks
N/A Outfall External Inspection 120" and 78" Ocean Outfalls
N/A Outfall Structural Integrity Report 120” and 78” Ocean Outfalls
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
63
Process Schematic
Major Assets
Major Assets Quantities
Anaerobic Digesters (C–T)
Active Digesters 15
Active/Holding Digesters
(I and J) 2
Holding Digester (K) 1
Sludge Mixing Pumps
15+1+4
(1 each Digester + 1 at Digester
K + 1 backup in each Digester L,
M, N, & O)
Major Assets Quantities
Anaerobic Digesters (C–T) (Continued)
Jet Mixing Pumps 4
(2 each in Digesters I and J)
Sludge Recirculation Pumps 17
Hot Water Circulation Pumps 17
Heat Exchangers 17
Bottom Sludge Pumps 10
Major Assets Quantities
Digester Ferric Facility
Digester Ferric Storage Tanks 2
Ferric Feed Pumps 6
AREA 25 ASSET MANAGEMENT SUMMARY – PLANT NO. 2 SOLIDS HANDLING – DIGESTERS
2.2.17 Plant No. 2 Solids Handling – Digesters
Note: Process Schematic shows entire Area 25 Solids Handling Facility.
Major Assets Remaining Useful Life
Asset Type
Di
g
e
s
t
e
r
C
Di
g
e
s
t
e
r
D
Di
g
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s
t
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E
Di
g
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s
t
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F
Di
g
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s
t
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G
Di
g
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s
t
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H
Di
g
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s
t
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I
Di
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s
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J
Di
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s
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K
Di
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s
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L
Di
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M
Di
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N
Di
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t
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Di
g
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s
t
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P
Di
g
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s
t
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Q
Di
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s
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R
Di
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s
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S
Di
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s
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T
Di
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s
t
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F
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c
Civil
Effluent Piping 4 4 4 4 4 4 3 3 4 4 4 4 4 4 4 4 4 4 2
Structural
Structure 4 4 4 4 4 4 3 3 5 4 4 4 4 5 4 5 4 4 2
Digester Dome 4 4 4 4 4 4 3 3 5 4 4 4 4 5 4 5 4 4 -
Mechanical
Sludge Mixing Pumps/Jet Mixing 4 4 3 4 4 3 2 2 3 3 3 3 3 3 3 3 3 3 -
Sludge Recirculation and Heating
System 4 4 2 4 4 2 2 2 - 2 2 2 2 4 4 4 4 4 -
Hot Water System 4 4 4 4 4 4 2 2 - 4 4 4 4 4 4 4 4 4 -
Sludge Transfer Pump 4 4 3 3 4 4 4 4 4 4 -
Piping and Valve 4 4 4 4 4 4 2 2 4 4 4 4 4 4 4 4 4 4 2
Chemical Pump - - - - - - - - - - - - - - - - - - 2
Electrical
MCCs 4 4 5 3 3 5 1 1 1 3 3 3 3 5 5 3 3 5 1
VFDs - - - - - - 4 4 4 - - - - - - - - - -
Instrumentation
PLC and Flow Meter 4 4 4 4 4 4 2 2 2 3 3 3 3 4 4 4 4 4 2
Please see the comprehensive Acronyms and Abbreviations list for definitions.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
2025 Asset Management Plan
64
AREA 25 ASSET MANAGEMENT SUMMARY – PLANT NO. 2 SOLIDS HANDLING – DIGESTERS
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Digester K Dome Integrity – Gas is leaking from dome and numerous cracks were found. Keep Holder K out of service. Minimize shutdown time of
Holders I and J.
FR2-0032 is under construction to repair the Digester K dome by overlaying polymer concrete based on the
condition assessment and structural analysis report.
Digester C, D, F, G Mechanical Equipment Reliability – Digesters C, D, F, and G are the only four
digesters that need to be upgraded with chopper pumps for the high-rate mixing pumps. All the high-
rate mixing pumps on the other P2 digesters have been replaced with chopper pumps. Other pumps
and the heat exchangers at the four digesters are also aged and need to be replaced.
Heat exchangers have already been purchased and are
stocked on site in preparation for FE20-02.
FE20-02 is under construction to replace high-rate mixing pumps, heat exchangers, sludge recirculation pumps,
bottom sludge transfer pumps, and hot water pumps and piping.
Digester Gas Balance Line Material Compatibility – Digester C, D, F, G, and I gas balance lines
were constructed of polyvinyl chloride (PVC) pipes. The remaining gas balance lines were
constructed of carbon steel pipes. These gas lines are not meeting the current digester gas line
standard of stainless steel and are prone to failure or corrosion.
Finish the condition assessment of the carbon steel lines
and apply protective coating as necessary based on the
findings.
FE19-10 is under construction to replace the PVC gas balance lines with stainless steel lines (FE19-10 was
combined with FE20-02 as one bid). P2-137 will replace the carbon steel gas balance lines between Digesters P
and S. Other replacement needs will be planned based on the condition assessment findings and the remaining
years in service.
Digesters P and R Structural Issue – The post-tensioned ring has deteriorated, impacting the
structural integrity of the concrete domes.
Digesters P and R have been taken out of service. P2-137A is in the completion phase to repair Digesters P and R post-tensioned rings and demolish Q-R bridge.
Walking Bridge Structural Deficiencies – Six out of 13 bridges were red taped to prevent access
after unsafe conditions were found from assessments due to major cracking, buckling, and potential
rebar corrosion.
Coat the steel bridges. Repair projects will incorporate
inspection of the bridges on a regular basis before the
repairs.
FE19-10 is repairing Digesters F and G and D-I bridges. FR2-0033 is repairing Digester O-T bridge. P2-137 will
repair the remaining 13 bridges and replace the Digester Q-R bridge demolished by P2-137A.
Viewport Corrosion – There are three viewports on each digester. Most viewports are corroded,
leaking gas from the seal, and need to be replaced.
Maintenance is scheduled to replace the seals. P2-137 will replace one viewport and abandon the remaining two per digester.
Digester E and H Flame Arrestors Access – There’s no safe access to do maintenance work on
the flame arrestors on the gas balance lines.
Maintenance continues to set up a manlift to access. P2-137 will add access platforms to those four flame arrestors.
Heat Exchangers, Sludge Recirculation Pump, and Sludge Transfer Pump Reliability – Digester
heat exchangers, recirculation pumps, and bottom sludge transfer pumps are nearing the end of their
useful lives and need to be replaced.
Maintenance will store spare heat exchangers, sludge
recirculation pumps, and bottom sludge transfer pumps.
PRN-00684 Maintenance projects will replace heat exchangers, sludge recirculation pumps, and bottom sludge
transfer pumps. (Digester E, H, L, M, N and O heat exchanger replacement and E and H pump replacement are
completed.)
FE20-02 will replace those units on Digesters C, D, F, and G.
Digester I and J Coating Failure – Interior coating on walls and ceiling installed by P2-89 are
peeling off gradually.
Wash off the peeled coating after digester cleaning to avoid
clogging the mixing pump and piping.
Creating project to recoat Digester I, J, and K interiors. Digester Holder K needs to be coated.
Overall Digester Reliability – Digesters are approaching the end of their useful lives and pose a risk
of failure during a seismic event. Building new digesters is recommended by the Biosolids Master
Plan to address the seismic risk and provide long-term Class B digestion reliability with the ability to
convert to Class A digestion in the future.
Perform PM, condition assessment, and incidental repairs. P2-137 will rehabilitate digesters including repairing domes and walls, replacing electrical and motor control centers
(MCCs), relocating carbon canisters to ground level, and addressing other project elements mentioned above.
P2-128 will build six new digesters. X-135 will replace Digesters P, Q, R, and S. XP2-131 will build three
digesters/holders to replace Digesters I, J, and K.
Current and Future Projects
Project No. Project Titlea Impacted Facilities
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
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20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
PRN-00684 P2 Digester Maintenance Projects Digesters E, H, L, M, N, O, P, Q, R, S, and T
FE20-02 (incl. FE19-10) Digesters C, D, F, and G Rehabilitation Digesters C, D, F, G, and I
FR2-0033 Digester O-T Bridge Repair Digesters O and T
FR2-0032 Digester K Dome Repair Digester K
P2-137A Digester P and R Dome Tendon Repair Digesters P and R
P2-137 Digesters Rehabilitation Digesters C, D, F, G, H, L, M, N, O, P, Q, R, and S
P2-124 Interim Food Waste Receiving Facility Digester M, Gas Treatment Facilities, and CenGen Design completed. Construction is pending food waste contract.
J-124 Digester Gas Facilities Rehabilitation Digester T
P2-128 Digester Replacement New and Existing Digesters
X-135 Digesters P, Q, R, and S Replacement Digesters P, Q, R, and S
XP2-130 Food Waste Receiving Facility All Digesters, Gas Treatment Facilities, and CenGen
XP2-131 Digesters I, J, and K Replacement Digesters I, J, K, M, N, and O
a For simplicity, Project Titles are missing “At Plant No. 2.”
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
65
Process Schematic
Major Assets
Major Assets Quantities
Sludge Blending Facility
Sludge Blending Tanks 2
Digester Feed Pumps 6
Recirculation Pumps 3
Electrical Building 1
Plant Boiler Facility
Building 1
Boilers and Heat Exchangers 2
Major Assets Quantities
Dewatering Centrifuge Facility
Building 1
Centrifuges 5
Sludge Feed Pumps 5
Cake Transfer Pumps 5
Centrate Pumps 2
Polymer System 1
Major Assets Quantities
Centrifuge Building and Silos Odor Control
Biofilters 3
Ammonia Scrubber 1
Acid Tank 1
Gas Handling
Gas Compressors 3
Low Pressure Gas Holder 1
Gas Dryers 2
Gas Flares 3
Carbon Media 3
Major Assets Quantities
Truck Loading Bay Odor Control
Chemical Scrubbers 2
Bleach Tank 1
Caustic Tank 1
Bleach Pumps 4
Caustic Pumps 4
Major Assets Quantities
Truck Loading
Cake Storage Silos 2
Sliding Frames 2
Screw Conveyors 12
Scales 2
AREA 25 ASSET MANAGEMENT SUMMARY – PLANT NO. 2 SOLIDS HANDLING – REMAINING FACILITIES
2.2.18 Plant No. 2 Solids Handling – Remaining Facilities
Note: Process Schematic shows entire Area 25 Solids Handling Facility.
Major Assets Remaining Useful Life
Asset Type
Sl
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B
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Civil
Effluent Piping 2 - - - - - - - -
Structural
Structure 2 - 1 1 1 1 - 3 3
Building 1 3 1 - - - 4 - -
Mechanical
Pump 3 - 1 - - - - - -
Fan - - - 3 2 - - - -
Boiler and Heat Exchanger - 2 - - - - - - -
Centrifuge - - 1 - - - - - -
Polymer System - - 1 - - - - - -
Biofilter - - - 1 - - - - -
Chemical System - - - 2 2 - - - -
Gas Cleaning Vessel - - - - - - 3 - -
Gas Compressor - - - - - - 4 - -
Gas Dryer - - - - - - 5 - -
Screw Conveyor - - - - - 2 - - -
Sliding Frame - - - - - 2 - - -
Piping and Valve 3 3 2 2 2 3 4 3 3
Scale - - - - - 1 - - -
Electrical
MCCs 1 2 1 1 1 2 4 - -
VFDs 4 - 3 - - - - - -
Instrumentation
PLCs and Flow Meters 3 3 2 2 2 3 4 - 3
Please see the comprehensive Acronyms and Abbreviations list for definitions.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
2025 Asset Management Plan
66
AREA 25 ASSET MANAGEMENT SUMMARY – PLANT NO. 2 SOLIDS HANDLING – REMAINING FACILITIES
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Boiler and Heat Exchanger Reliability and Vulnerabilities – Equipment is nearing the
end of its useful life. Facility has reliability and seismic vulnerabilities.
N/A P2-128 will install hot water boilers in the building to replace the existing steam boilers. J-
138 will address the building’s seismic deficiencies.
Gas Handling System Reliability – The aging facility requires replacement or rehabilitation
to meet current and future process needs and regulatory requirements. Gas compressor
system is aging and needs major rehabilitation.
Continue to actively monitor the condition of aging assets until replacement and overhaul. J-124, Digester Gas Facilities Rehabilitation, will replace existing flares and compressor
inlet moisture separator systems; install new closed-loop cooling water systems; rehabilitate
the building; and perform various electrical, instrumentation, and control upgrades to
improve reliability.
Gas compressors will be overhauled by Maintenance.
The remaining instrumentation upgrades will be completed under Project FE24-02.
Refrigerated Gas Dryer Reliability – Inefficient capacity and unreliable. Requires
significant maintenance.
N/A The refrigerated gas dryer systems will be replaced by FE23-01.
The remaining dryer instrumentation upgrades will be completed under Project FE24-02.
Truck Loading Facility Area Issues – Truck loading bay fugitive odors escape during cake
loading operations; screw conveyor has high torque alarms.
Monitor and investigate the problem. P2-140 will implement the recommended odor capture improvements from the PS20-03
planning study.
Plan to upsize the screw conveyor motors and gear boxes.
Centrifuge Dewatering Issues – Cake pipe lube ring pump replacement parts are not
readily available, making it difficult to maintain and keep operational; vivianite build-up in
centrate collecting lines.
Stock spare parts for lube ring pump. Maintenance will conduct reoccurring centrate line
inspection and cleaning to break down the vivianite build-up, and add a flush line to help the
cleaning.
MP2-015 completed the replacement option evaluation and will replace the lube ring pumps
with hydraulic diaphragm pumps.
Planning study to develop engineering solution to prevent vivianite build-up as the problem
grows.
Centrifuge and Silo Odor Control Issues – Odor control fans are experiencing low air
flow output; a condition assessment of the downstream biofilter found that the media was
plugged and need replacement.
Continue the investigation of the root cause of the media plugging. Maintenance will
purchase a spare fan.
Plan project to replace the biofilter media.
Current and Future Projects
Project No. Project Titlea Impacted Facilities
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
FE23-01 Digester Gas Compressor Dryer Replacements at Plants No. 1 and No. 2 Refrigerated Gas Dryers
FE24-02 Gas Compressor Chilled Water Exchangers and Condensate Separator Replacements
and Instrumentation Upgrades
Chilled Water Gas Heat Exchangers and Condensate Separator,
Gas Dryer Instrumentation, Gas Header Instrumentation
J-124 Digester Gas Facilities Rehabilitation Electrical and Instrumentation, Building, Compressor Inlet
Separators, Cooling System, Flares
N/A Digester Gas Compressor Overhauls at Plants No. 1 and No. 2 (Maintenance Service) Gas Compressors
P2-140 Truck Loading Bay Odor Control Improvements Truck Loading Facility
P2-128 Digester Replacement Boiler Facility
J-138 CenGen Facilities and OOBS Seismic Upgrades CenGen, OOBS, Boiler Bldg., PB-B
MP2-015 Cake Pipe Lube Ring Pump Replacement Centrifuge and Truck Loading Facilities
SC22-02 Centrifuge Server Room HVAC Replacement Centrifuge Facility
TBD LPDG Drip Trap Improvements at Plant No. 2 LPDG Drip Traps
a For simplicity, Project Titles are missing “At Plant No. 2.”
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
67
Process Schematic
Major Assets
Major Assets Quantities
Engine Generator
Gas Engine (16 Cylinders) 5
Electrical Generator 5
Engine Lube Oil System 5
Steam Turbine Generator
Steam Turbine 1
Electrical Generator 1
Steam Condenser 1
Deaerator Vessel 1
HVAC
Ventilation Supply Fans 5
Ventilation Exhaust Fans 6
Air Compressors
Engine Starting Air 3
Instrument Air 2
Major Assets Quantities
Heat Recovery System
Heat Recovery Boiler 5
Building
Building 1
Piping Various
Engine Emission Control
OXI Catalyst 5
SCR Catalyst 5
Urea Injection System 5
Heat Exchanger Systems
Jacket Water System 5
Aux. Waste Heat System 5
Waste Heat System 2
AREA 26 ASSET MANAGEMENT SUMMARY – PLANT NO. 2 CENTRAL GENERATION
2.2.19 Plant No. 2 Central Generation
Major Assets Remaining Useful Life
Asset Type
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Structural
Buildingsa 1
Structures - - - - - - - - - - - - - - -
Mechanical
Combustion Engine 3 5 5 5 5 - - - - - - - - - -
Lube Oil System 3 3 3 3 3 - - - - - - - - - -
Engine Jacket Water 3 3 3 3 3 - - - - - - - - - -
Auxiliary Waster Heat 3 3 3 3 3 - - - - - - - - - -
Heat Recovery Boiler 3 3 3 3 3 - - - - - - - - - -
OXI/ SCR/ Urea Injection 4 3 3 3 4 - - - - - - - - - -
Piping/ Ducting - - - - - 4 3 3 3 5 3 3 3 4 3
Heat Exchanger - - - - - - 3 - 3 - - - - - -
Pump - - - - - - 3 4 3 - 3 - - - 3
Vessel/ Tank - - - - - 3 - 4 - - 3 3 3 - 3
Steam Turbine - - - - - 4 - - - - - - - - -
Centrifuge - - - - - - - - - - 4 - - - -
Compressor - - - - - - - - - - - 3 3 - -
Dryer - - - - - - - - - - - 3 3 - -
Fan/ Air Handling Unit - - - - - - - - - - - - - 3 -
Electricalb
Generator 3 5 5 5 3 4 - - - - - - - - -
VFDs - - - - - - - - - - - - - - -
MCCs 4 4 4 4 4 4 - - - - - 2 2 4 4
Instrumentation
General / PLCs / CEMS 5 5 5 5 5 5 4 4 4 4 4 3 3 3 3
Please see the comprehensive Acronyms and Abbreviations list for definitions.
a Building is common for all assets. b Refer to Area 18 (Section 2.2.10) for switchgears, batteries, and other electrical assets.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
2025 Asset Management Plan
68
AREA 26 ASSET MANAGEMENT SUMMARY – PLANT NO. 2 CENTRAL GENERATION
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Gas Engine Generator Set Reliability – Aging components and systems required to operate
the five CenGen engines are creating reliability issues and need to be addressed.
Continue to perform engine/generator PMs and monitor engine/generator
performance.
Project J-135B is executing major engine overhauls. Project J-135C will overhaul engine/generator
sets #2 and #4 after J-135B is complete in 2026.
Project J-140 will upgrade various obsolete instrumentation and control systems.
Project J-117B will replace switchgears, MCCs, battery backup, etc.
Engine Lube Oil System Reliability – Lube oil centrifuge instrumentation and controls need
to be upgraded.
N/A Install new instrumentation and controls onto the existing two units (PRN-00211).
Plant Water Piping Corrosion – Plant water (that is, cooling water) piping has degraded and
needs replacement.
N/A Project FE20-04 will replace all plant water piping in the basement of CenGen.
Emission Control System Cracking/Overpressure Protection – Housings on the oxidizer
catalysts are failing prematurely and lack overpressure protection.
Continue to perform housing PMs and provide as-needed CMs until
replacement.
Evaluate additional logic/alarms to notify Operations of abnormal conditions
and assist with decision making.
Investigate failures; redesign and install new catalyst housings and emissions devices as needed;
evaluate the feasibility of adding overpressure protection to the exhaust system (PRN-00977/AI-184).
Exhaust Heat Recovery Boiler Reliability – The boilers need to be inspected both internally
and externally.
Perform as-needed repairs based on inspection results to improve boiler
performance and reliability.
The boilers will be cleaned and inspected through Maintenance Service Contract CS-2025-650BD.
As-needed repairs will be performed through Maintenance or a separate contract based on inspection
results to improve boiler performance and reliability.
Engine PLC Obsolescence – The existing engine PLCs and RIO cards are obsolete. Continue to perform PLC PMs, provide as-needed CMs, and monitor
equipment performance until replacement.
Project J-140 will replace obsolete PLCs and RIO cards with new Modicon M580 PLCs and new RIO
cards.
Engine Protection System Obsolescence and Limited Engine Diagnostics – The existing
engine vibration monitoring systems are aging, obsolete, and lack diagnostic capability.
Continue to actively monitor obsolete asset performance until replacement. Project J-140 will upgrade the Engine Condition Monitoring System and include diagnostic
capabilities.
Engine Cylinder Pressure Monitoring and Balancing – There is no online engine cylinder
pressure monitoring to assist with engine load balancing/troubleshooting.
N/A Project J-140 will add pressure sensors to monitor individual cylinder’s pressure.
Exhaust Heat Recovery Boiler Reliability – The boilers need to be inspected both internally
and externally.
N/A The boilers will be cleaned and inspected through Maintenance Service Contract CS-2025-650BD.
As-needed repairs will be performed through Maintenance or a separate contract based on inspection
results to improve boiler performance and reliability.
Engine Ignition Control System Obsolescence – The existing engine controls are aging and
obsolete.
Continue to actively monitor the obsolete assets and perform as-needed CMs
until replacement.
MPJ-002 (PRN-00965) is pilot testing a new engine ignition system on Plant 2 Engine 2 to test
compatibility and performance prior to installing new ignition control systems onto each engine
generator set.
Steam Turbine Reliability – The steam turbine has high-vibration issue. N/A Steam turbine gearbox will be rebuilt per manufacturer specifications. System realignment will be
performed (Maintenance Service).
Deaerator Reliability – The deaerator system is aging and needs to be replaced to improve
reliability.
Continue to perform PMs, provide as-needed CMs, and monitor equipment
performance until replacement.
Plan a project to replace the deaerator system.
HVAC Reliability – The supply fan dampers and supply air filters are aging and need to be
replaced to improve reliability.
Continue to perform PMs, provide as-needed CMs, and monitor equipment
performance until replacement.
Plan a project to replace aging equipment.
CEMS Analyzer Obsolescence – The analyzers are obsolete and need to be replaced. Continue to actively monitor the obsolete assets and perform as-needed CMs
until replacement.
Plan a project to replace the obsolete analyzers.
2025 Asset Management Plan
69
AREA 26 ASSET MANAGEMENT SUMMARY – PLANT NO. 2 CENTRAL GENERATION
Current and Future Projects
Project No. Project Title Impacted Facilities
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
30
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
FE20-04 CenGen Plant Water Pipe Replacement at Plant No. 2 Plant Water Piping
J-135B Engine and Generator Overhauls at Plant Nos. 1 and 2 Engine Generator
J-135C Engine and Generator Overhauls at Plant Nos. 1 and 2 Phase 2 Engine Generator Sets #2 and #4
J-117B Outfall Low Flow Pump Station Switchgear, Battery Backup, HVAC, MCC
J-140 CenGen Engine Monitoring System Improvements at Plants No. 1 and No. 2 Engine Generator, Heat Recovery System, Waste
Heat, Steam, Hot Water, Instrument Air
J-138 CenGen Facilities and OOBS Seismic Upgrades CenGen Building
MPJ-001 CenGen Exhaust Heat Recovery Boiler Cleaning/Assessment (Maintenance Service) Heat Recovery System
MPJ-002 (PRN-00965) CenGen Engine Ignition Control System Obsolescence Replacement Engine Generator
TBD CenGen Underground Storage Tank Assessment at Plants No. 1 and No. 2 CenGen Oil Storage/Handling
TBD CenGen Deaerator System Replacement at Plant No. 2 Deaerator System
TBD CenGen Lube Oil Control Panels Replacement at Plant No. 2 Lube Oil
FR1-0021 CenGen Basement Access Hatch Fall Restraint at Plants No. 1 and No. 2 Building
N/A CenGen Steam Turbine Gearbox Rebuild/ Realignment (Maintenance Service) Steam Turbine
PRN-00977/ AI-184 CenGen Engine Exhaust Oxidizer Housing Redesign & Overpressure Protection Feasibility Emission Control System
AI-750/ AI-799 CenGen Supply Fan Dampers and Air Inlet Filter Replacement HVAC
AI-797 CenGen CEMS Analyzer Replacement Plants No. 1 and No. 2 CEMS
TBD Energy and Digester Gas Master Plan - Revisit CenGen Facilities
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
70
Process Schematic
Major Assets
Major Assets Quantities
City Water
Pumps 7
Tanks 4
Piping 8.9 miles
Major Assets Quantities
Plant Water
Pumps 4
Strainers 4
Piping 10.6 miles
Major Assets Quantities
Plant Air
Compressors 3
Plant Air Piping 6.7 miles
Instrument Air Piping 1.6 miles
AREA 27 ASSET MANAGEMENT SUMMARY – PLANT NO. 2 UTILITIES
2.2.20 Plant No. 2 Utilities
Major Assets Remaining Useful Life
Asset Type
Ci
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Civil
Pipes 3 3 2 3
Structural
Pump Station 1 1 - -
Tanks 2 - - -
Mechanical
Pumps 3 2 - -
Strainers - 2 - -
Compressors - - - 2
Ventilation System 4 2 - -
Electrical
MCCs 3 4 - -
VFDs 5 5 - -
Instrumentation
PLC, Flowmeter 3 3 - 3
Please see the comprehensive Acronyms and Abbreviations list for definitions.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
Major Assets Quantities
Reclaimed Water
Piping 6 miles
2025 Asset Management Plan
71
AREA 27 ASSET MANAGEMENT SUMMARY – PLANT NO. 2 UTILITIES
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Plant/Instrument Air Line Issues – Excessive condensate and oversized piping is
causing a large pressure drop, reducing compressor redundancy.
Continue to monitor existing piping and provide as-needed CMs until
replacement.
Future Small Projects will be created to address oversized piping and several dead ends within the system.
PRN-00995, Plant Air Piping Study, will provide recommendations.
Plant Water Piping Reliability – Due to the corrosive nature of the plant water, the current
ductile iron pipes are corroding prematurely and causing leaks throughout the plant.
Continue to monitor existing piping and provide as-needed CMs until
replacement.
FE18-14 will address corroded plant water piping in the tunnels. The goal for these and future projects is to
replace ductile iron pipes with either fiberglass-reinforced or high-density polyethylene (HDPE) piping material.
Air Compressor Reliability – Instrument air compressors have failed due to reaching the
end of their lives and need to be replaced.
N/A. Air compressors at CenGen are being replaced via PRN-00536 due to multiple failures.
City Water Pump Station Aging – Pump station is getting old, requiring increased
maintenance, and will not be reliable long term.
N/A PS23-05, Utility Water Planning Study, will look into providing a recommendation for rehabilitation or
replacement.
Current and Future Projects
Project No. Project Title Impacted Facilities
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
J-117B Outfall Low Flow Pump Station New Plant Water Pump Station
P2-133 B/C-Side Primary Sedimentation Basins Rehabilitation at Plant No. 2 City Water and Air Piping
P2-98A A-Side Primary Clarifiers Replacement at Plant No. 2 Plant Water Piping
X-036 City Water Pump Station Rehabilitation at Plant No. 2 City Water Pump Station
X-037 Plant Water Pump Station and 12kV Distribution Center A Demolition at Plant No. 2 Existing Plant Water Pump Station
P2-136 Activated Sludge Aeration Basins Rehabilitation at Plant No. 2 Plant Water Piping
PS23-05 Utility Water Planning Study at Plant Nos. 1 and 2 City Water Pump Station
PRN-00995 Plant Air Piping Study at Plant Nos. 1 and 2 Plant Air Piping
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
72
Remaining Useful Life of Utility Infrastructure
AREA 27 ASSET MANAGEMENT SUMMARY – PLANT NO. 2 UTILITIES
Please see the comprehensive Acronyms and Abbreviations list for definitions.
2025 Asset Management Plan
73
Remaining Useful Life of Utility Infrastructure
AREA 27 ASSET MANAGEMENT SUMMARY – PLANT NO. 2 UTILITIES
Please see the comprehensive Acronyms and Abbreviations list for definitions.
2025 Asset Management Plan
74
Process Schematic
Major Assets
Major Assets Quantities
12kV Transformers 64
Standby Generators 10
12kV Switchgears 31
5kV and 480V Switchgears 49
MCCs 101
VFDs 130
125VDC and 24VDC Battery Systems 38
AREA 28 ASSET MANAGEMENT SUMMARY – PLANT NO. 2 ELECTRICAL DISTRIBUTION
2.2.21 Plant No. 2 Electrical Distribution
Asset Type
Se
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C
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Ce
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DC
-A
DC
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DC
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DC
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EP
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DC
-J
DC
-K
PB
-B
PB
-C
PB
-D
Tier I – 12.47kV Primary Distribution Level
12.47kV Feeders 5 4 1 1 4 4 2 2 2 2 1 1 5 5
12.47kV Switchgears 3 5 3 3 4 4 2 2 2 2 1 - - -
12.47kV Load Interrupter Switches - - - 3 - - - - - - 1 1 5 5
12.47kV Generators - - - - - - 2 - 2 - - - - -
Transformers: 12.47kV/2.4kV - - - - 4 - - - - - - - - -
Transformers: 12.47kV/480V 3 4 3 3 4 3 - 2 - 2 1 5 4 4
Tier II – 4.16kV Distribution Level
4.16kV Feeders - - - - - - - 2 - - - - - -
Tier III – 2.4kV Distribution Level
2.4kV Feeders - - - - 4 - - - - - - - - -
Tier IV – 480V Distribution Level
480V Switchgears - 4 3 3 4 4 - 2 3 2 1 2 5 -
Transfer Switches - - - - - - - - - - - 2 5 5
Generators - - - - - - - - - - - - 5 5
Tier V – UPS
UPSs Individual - 5 - - 5 4 4 4 - - 5 5 - -
UPSs Regional - - - 4 - - 4 - - 4 - - - -
Tier VI – 125VDC and 24VDC Battery Systems
125VDC Chargers 5 5 5 5 - - 4 4 5 3 2 4 - -
125VDC Batteries 2 5 2 5 - - 2 5 2 4 3 4 - -
24VDC Chargers - 5 - - - - 4 - 4 - - - 5 5
24VDC Batteries - 5 - - - - 5 - 4 - - - 5 5
Generators
Generator Controls - 5 - - - - 3 - 3 - - - 5 5
Please see the comprehensive Acronyms and Abbreviations list for definitions.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
2025 Asset Management Plan
75
AREA 28 ASSET MANAGEMENT SUMMARY – PLANT NO. 2 ELECTRICAL DISTRIBUTION
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Variable Frequency Drive Obsolescence – Models are becoming obsolete and are
unsupported by the manufacturer.
Small Projects and Maintenance Projects are currently replacing VFDs,
such as MP2-016 and FE19-08. Use of a co-op contract is being
explored for the next projects.
Develop Service Contract for VFD condition assessment, repairs, and replacements.
Headworks Cable Failures – 480V and control cables are failing in the headworks
area. Multiple cable failures occurred in the grit basin and grit handling system, causing
a complete system failure.
FR2-0026R is replacing various 480V and 120V power and control
cables in the headworks area, and other Maintenance Projects will
address additional failed cables as needed.
P2-141 will replace all 480V and 120V cables in the headworks area. An Electrical Blanket Repair and
Maintenance Contract is in development to replace cables more efficiently and cost effectively.
Current and Future Projects
Project No. Project Title Impacted Facilities
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
FR2-0026R Headworks Phase 3 Cable Replacement at Plant No. 2 Grit Pumps at Headworks
MP2-027 Power Building D Automatic Transfer Switch Replacement Power Building D
MP2-029 Generator Radiator Replacements Headworks and EPSA Generators
J-117B Outfall Low Flow Pump Station Power Distribution
FE19-08 Secondary Treatment VFD Replacements at Plant No. 2 RAS, WAS, and PEPS Pumps
P2-98A A-Side Primary Basins Replacement at Plant No. 2 MCCs Associated with the A-Side Clarifiers (fed from PB-B).
J-98 Electrical Power Distribution System Improvements Various Plant No. 1 and Plant No. 2 Condition-Based Electrical Distribution
Systems
P2-137 Digester Rehabilitation at Plant No. 2 MCCs Fed from PBs B and C (MCC-E, MCC-F, MCC-S, MCC-PQ, MCC-PQS)
P2-141 Headworks Electrical Distribution Improvements at Plant No. 2 Distribution Center H and Associated Headworks 480V and 120V Power and
Control Cables
J-142 Power Distribution Systems and Power Building C Replacements at
Plants No. 1 and No. 2 Power Building C
J-124 Digesters Gas Facility Replacement MCCs Associated with Digesters
P2-128 Digester Replacement at Plant No. 2 Power Distribution System
P2-138 O&M Complex at Plant No. 2 Distribution Center D and Operations Buildings
X-036 City Water Pump Station Rehabilitation at Plant No. 2 City Water Pump Station MCC and VFDs
P2-133 Plant No. 2 B/C-Side Basins Rehabilitation PB-B, PB-D
X-098 Effluent Pump Station Annex Rehabilitation EPSA Power Distribution
X-095 Southern California Edison Substation and Service Center
Replacement at Plant No. 2 SCE Substation and 12kV Service Center
X-030 Headworks Rehabilitation Distribution Center H, Waste Sidestream PS-C
X-037 Plant Water Pump Station and 12kV Distribution Center A Demolition
at Plant No. 2 Plant Water Pump Station and Distribution Center A
X-135 Digester P, Q, R, and S Replacement Digester P, Q, R, and S Associated Electrical
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
76
AREA 29 ASSET MANAGEMENT SUMMARY – PLANT NO. 2 OCCUPIED AND POWER BUILDINGS
2.2.22 Plant No. 2 Occupied and Power Buildings
Occupied and Power Building Site Plan at Plant No. 2
Note: Building colors are used to help identify the buildings and do not represent RUL scores.
Major Assets Remaining Useful Life
Buildings
Bu
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d
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R
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f
Bu
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(
P
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-06
)
El
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Cart Building 4 - - - -
Maintenance Building 4 2 5 5 2
Operations Center Building 3 4 5 4 4
12kV Distribution Center A 4 - 3 2 -
12kV Distribution Center B 4 - 3 2 -
12kV Distribution Center C 2 - 3 - -
12kV Distribution Center D 2 - 3 2 -
Distribution Center H 1 - 4 - -
Distribution Center J 2 - 3 - -
Distribution Center K 2 - 3 - -
12kV Service Center 4 - 3 4 -
Headworks Power Building A 3 - 3 2 -
Headworks Power Building B 3 - 3 2 -
EPSA Electrical Building 2 - 4 - -
Power Building B 4 - 3 4 -
Power Building C 4 - 3 2 -
Power Building D 3 - 3 2 -
Please see the comprehensive Acronyms and Abbreviations list for definitions.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
2025 Asset Management Plan
77
AREA 29 ASSET MANAGEMENT SUMMARY – PLANT NO. 2 OCCUPIED AND POWER BUILDINGS
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Seismic Retrofits Needed – Recent planning study (PS15-06) recommended seismic
retrofits to several buildings.
N/A P2-138 will replace existing O&M buildings with new O&M Complex.
Aging Elevators – All elevators need to be rehabilitated and modernized. N/A As the building elevators age and are less reliable over time, projects are being created to address modernization and upgrades
as needed. One such project is SC20-02, which will address the OOBS elevators.
Aging HVAC Units – HVAC units have shorter RUL due to coastal environment. N/A When units are obsolete, corroded, and reach the end of their useful life, projects will be created to replace these units.
Current and Future Projects
Project No. Project Title Impacted Facilities
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
P2-138 O&M Complex at Plant No. 2 Operations Center & Maintenance Building
SC22-02 HVAC Replacement for Plant No. 2 Centrifuge Building, Op Center, and Bitter Point PS Operations Center
SC20-02 Ocean Outfall Booster Station Elevator Rehabilitation Ocean Outfall Booster Station
X-037 Plant Water Pump Station and 12kV Distribution Center Demolition at Plant No. 2 12kV Distribution Center
X-135 Digester P, Q , R, and S Replacement at Plant No. 2 Replace Power Building C
X-095 SCE Substation and 12kV Service Center Demolition 12kV Service Center
J-141 Public Address System Replacement Plant 2 Plantwide
P2-133 B/C Side Sedimentation Basin Rehabilitation at Plant No. 2 Replace Power Building D
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
78
Major Assets – Quantities
Pump Station Wet Wells Pumps Force Mains Valves
Emergency
Generator
(X = Yes)
15th Street 1 3 2 22
A Street 1 3 2 19
Bay Bridge 1 5 2 17 X
Bitter Point 1 5 2 23 X
College 1 3 2 18
Crystal Cove 1 2 2 13 X
Edinger 1 2 1 8
Lido 1 3 2 17
MacArthur 1 2 2 8
Main Street 2 10 3 38 X
Rocky Point 1 4 2 18 X
Slater 1 5 2 17 X
Seal Beach 2 8 2 24
Westside 1 4 1 16 X
Yorba Linda 1 3 1 11
Newport Force Mains -- -- 2 --
Total 17 62 30 269 -
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – PUMP STATIONS
2.2.23 Collection System Pump Station and Force Main Asset Management Summaries
Process Schematic
Major Assets Remaining Useful Life
Asset Type
15
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S
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Civil - Piping
Force Mains 3 3 5 2 4 4 5 4 1 5 3 5 1 5 5 2
Structural
Pump Station 4 4 4 2 1 4 3 4 2 1 3 3 4 2 4 -
Wet Well 3 3 4 1 4 3 4 4 3 3 3 3 4 3 3 -
Mechanical
Pumps 3 3 5 3 2 3 4 3 4 4 2 4 5 4 5 -
Valves 5 5 5 2 3 5 3 5 4 5 2 4 4 3 5 -
Ventilation
System 3 3 4 4 3 3 3 4 4 3 5 3 4 3 3 -
Emergency
Generator - - 3 1 - 3 - - - 2 2 3 - 3 - -
Electrical
MCC 2 2 4 1 1 3 5 4 5 4 1 2 5 1 5 -
VFD 5 5 5 5 4 - - 5 5 5 5 5 2 5 - -
Motors 3 3 4 2 2 3 3 4 4 3 2 3 5 3 4 -
Transformer 2 2 4 2 2 4 4 3 4 2 3 2 5 2 4 -
Instrumentation
PLC 3 3 4 4 3 4 4 4 4 3 4 3 4 4 4 -
Flowmeter 3 3 1 3 2 1 5 2 - 4 3 4 5 3 4 -
Please see the comprehensive Acronyms and Abbreviations list for definitions.
RUL < 5 years RUL 5–10 years RUL 11–15 years RUL 16–20 years RUL > 20 years
2025 Asset Management Plan
79
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – PUMP STATIONS
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Flood Risk – OC San’s new pump stations are designed to specifically consider and
mitigate flood risks; however, some older pump stations don’t meet the current standards.
Especially, Edinger Pump Station is entirely below grade and located immediately
adjacent to a flood control channel.
OC San follows protocols ahead of major storm events to be sure
facilities are prepared and in good working condition. Facilities are
monitored closely during storm events so that staff can respond to
any unexpected event quickly.
Project 11-33 has started the design to replace and relocate the Edinger Pump Station to a different location with
less flood risk and where critical infrastructure will be located above grade. Additionally, all new pump stations will
consider flood elevations and locate critical electrical equipment accordingly.
Accelerated Corrosion – Corrosion is a common problem in sewage systems due to the
presence of H2S. This is exacerbated in locations where sewage becomes turbulent,
which can include pump station wet wells. Additionally, in an effort to minimize odors
throughout the community, some manholes in the collection system have been sealed to
prevent gases from escaping, which accumulates more corrosive gases within the system.
Project 5-68 has added odor scrubbers to six key pump stations
where the wet wells have experienced pressurization issues. These
new scrubbers will allow the wet wells to vent, reducing the amount
of sewer gas trapped in the system while also scrubbing the air so it
will not be an odor issue for the surrounding community.
OC San routinely performs inspections on critical assets, including pump station wet wells. Recently, the MacArthur
Pump Station wet well was assessed and was found to be in relatively good condition considering the age of the
asset but will require some rehabilitation that will be completed under future Project 7-63. In the coming year, the
Crystal Cove and Lido Pump Station wet wells are expected to be inspected, with an ongoing inspection plan
following that.
Groundwater Intrusion – Groundwater has penetrated 15th Street, A Street, Bitter Point,
and Rocky Point Pump Stations. Groundwater may gradually compromise the strength of
reinforcement within the concrete structure walls over time.
Planning study XPS0065 will be launched to identify possible
mitigation measures and long-term solutions to be incorporated into
future pump station CIP projects.
Implement long-term solutions identified by planning study XPS0065.
Maintenance Access – In some cases, access to collections facilities is not ideal due to
limited land or easement rights, other competing public uses, or outdated facilities, which
don’t meet modern safety standards. One example is the MacArthur Pump Station Force
Main, which is difficult to access because redundancy was not incorporated when the
pump station was designed. Another example is the Slater Pump Station wet wells, which
are isolated by slide gates within 48-inch manholes that are difficult to access.
Capital project 7-68 added another force main to serve the
MacArthur Pump Station. Project FRC-0017 will modify the wet well
access at Slater Pump Station to provide a safer working
environment for staff.
OC San continues to improve planned maintenance processes and inter-agency coordination that allow crews to
minimize impacts on the community during necessary maintenance operations. Testing of modern automatic
air/vacuum valves could facilitate automatic venting of the Newport Beach Force Main system and minimize impacts
on traffic on Pacific Coast Highway. There is also continued effort to research emerging inspection technologies,
which could make difficult inspections more easily achievable or cost effective.
Valve Operability and Reliability – Valves at the pump stations sometimes reach the
end of their useful lives sooner than in other applications due to the harsh raw sewage
application. These valves are critical to the operation of the collection system.
Projects FRC-0017 and FRC-0018 have been launched to replace
valves at five pump stations.
Continue to monitor valve condition and RUL and launch Small Projects as necessary to replace valves that cannot
wait for a larger rehabilitation/replacement project.
Force Main Operability and Reliability – Force mains are some of OC San’s highest-risk
assets but also some of the most challenging to assess. While these assets have been
replaced and rehabilitated in a timely manner, there are many that have not received a
detailed inspection since installation.
A force main inspection plan has been developed to assess all the
force mains within the next 5 years with support from the existing
Condition Assessment Program resources. The Slater Pump Station
force main was inspected this year. The next planned assessments
will occur at the College and 15th Street Pump Stations.
Continue to implement the force main inspection plan and continually reassess the timing and priority of inspections
within the program. Future projects will also incorporate updated standards, which will look to add redundancy and
improved access where feasible. There is also continued effort to research emerging inspection technologies, which
could make difficult inspections more easily achievable or cost effective.
Outdated Bubbler Level System – At multiple pump stations (Bay Bridge, Crystal Cove,
Edinger, MacArthur, Main Street, Slater, Seal Beach), the bubbler systems are outdated
and do not meet OC San’s latest bubbler system standard. They do not have redundancy
or automatic blowdown control and are becoming increasingly unreliable.
Project FE23-03 has launched and is in the design phase to upgrade
the level control systems at these pump stations to meet current OC
San standards.
Adhere to OC San level control system design standards in all future pump station improvement projects.
2025 Asset Management Plan
80
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – PUMP STATIONS
Current and Future Projects
Project No. Location Project Title Impacted Facilities
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
FE19-01 Multiple Portable Generator Connectors at Pump Stations
15th Street, A Street, Bay Bridge, Bitter Point, College,
Crystal Cove, Edinger, MacArthur, Main Street, Rocky Point,
Seal Beach, Slater, and Westside Pump Stations
FE23-03 Multiple Pump Station Bubbler Level Control System Upgrade Seal Beach, Bay Bridge, Crystal Cove, Main Street,
MacArthur, Slater, and Edinger Pump Stations
PRN-01045 Multiple Pump Station Roof Replacement Westside, Bitter Point, Rocky Point, and Crystal Cove Pump
Stations
FRC-0018 Newport Beach Valve Replacements at Lido, Crystal Cove, A Street, and 15th St.
Pump Stations 15th Street, A Street, Lido, and Crystal Cove Pump Stations
XPS0065 Newport Beach Pump Station Groundwater Intrusion Study 15th Street, A Street, Bitter Point, and Rocky Point Pump
Stations
X-022 Newport Beach 15th Street Pump Station and Force Main Project 15th Street Pump Station
X-041 Newport Beach A Street Pump Station and Force Main Project A Street Pump Station
5-67 Newport Beach Bay Bridge Pump Station Replacement Bay Bridge Pump Station
SC22-02 Newport Beach HVAC Replacement for Plant No. 2 Centrifuge Building,
Operations Building, and Bitter Point Pump Station Bitter Point Pump Station
X-025 Newport Beach Bitter Point Pump Station Rehabilitation Project Bitter Point Pump Station
SC22-02 Newport Beach HVAC Replacement for Plant 2 Centrifuge Building, Operations
Building, and Bitter Point Pump Station Bitter Point Pump Station
FRC-0020 Costa Mesa College Pump Station Wet Well Rehabilitation College Pump Station
X-040 Costa Mesa College Pump Station Replacement and Force Main
Rehabilitation College Pump Station
MPC-002 Newport Beach Crystal Cove Pump Station Automatic Transfer Switch
Replacement Crystal Cove Pump Station
5-66 Newport Beach Crystal Cove Pump Station Upgrade and Rehabilitation Project Crystal Cove Pump Station
11-33 Huntington Beach Edinger Pump Station Rehabilitation Project Edinger Pump Station
X-023 Newport Beach Lido Pump Station Rehabilitation Project Lido Pump Station
PRN-01042 Newport Beach Lido, Short of Short Street, Force Main Rehabilitation Lido Pump Station
7-63 Newport Beach MacArthur Pump Station Rehabilitation Project MacArthur Pump Station
7-68 Newport Beach MacArthur Force Main Improvements MacArthur Pump Station
7-65 Irvine Gisler-Redhill Interceptor Rehabilitation Main Street Pump Station
7-64 Irvine Main Street Pump Station Rehabilitation Project Main Street Pump Station
X-024 Newport Beach Rocky Point Pump Station Rehabilitation Project Rocky Point Pump Station
PRN-01054 Newport Beach HVAC Replacement at Rocky Point Pump Station Rocky Point Pump Station
FRC-0017 Huntington Beach Valve Replacements and Wet Well Access Improvements at
Slater Pump Station Slater Pump Station
11-34 Huntington Beach Slater Pump Station Rehabilitation Project Slater Pump Station
3-67 Seal Beach Seal Beach Pump Station Replacement Seal Beach Pump Station
PRN-01021 Seal Beach Seal Beach Bridge Force Main Repair Seal Beach Pump Station
3-68 Seal Beach Los Alamitos Sub-Trunk Extension and Westside Pump Station
Abandonment Westside Pump Station
MPC-003 Fullerton Decommission Yorba Linda Pump Station Yorba Linda Pump Station
2-73 Fullerton and Yorba
Linda Yorba Linda Pumping Station and Spur Odor Station Demolition Yorba Linda Pump Station
Yorba Linda Spur Odor Station
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
81
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – PUMP STATIONS
Force Main Summary and Inspection Plan
Pump Station Force Main Built by
Project (Year) Size Material Cathodic
Protection RUL (years) Previous
Inspection
Planned
Inspection Notes
Newport Force Main System 5-29 (1989)
5-60 (2016)
30"–36" Ductile iron with CIPP
HDPE
No 15–20 None 2034
Bitter Point (East) 5-58 (2012) 42" HDPE > 20 None 2029 Project X-025 will complete rehabilitation of Bitter Point Pump Station and replace or
rehabilitate the force mains in 2041. Bitter Point (West) 5-29 (1988)
5-29-R1 (2004)
36" Ductile iron with
HDPE slip liner
No 10–15 None 2029
Lido (East, North of Short
Street)
5-9 (1959)
5-41 (1992)
FE15-10 (2016)
16"/24" Ductile iron with CIPP
HDPE
No > 20 FE15-10 warranty CCTV 2020
CCTV 2022
2031
Lido (West, North of Short
Street)
5-26 (1968)
5-60 (2016)
16"/24" DIP with CIPP
HDPE
No > 20 CCTV 2014, 2023 2031
Lido (East/West, South of Short
Street)
5-41-1 (1997)
FRC-0019 (2022)
16" Ductile iron First pipe joint only 5–10 CCTV 2022–2023 2026 Project PRN-01042 will complete rehabilitation of the remaining unlined force main section.
Rocky Point 5-50 (2008) 12" Ductile iron No 10–15 None 2030 Project X-024 will complete rehabilitation of Rocky Point Pump Station and force mains in 2039.
Bay Bridge (North/South) 5-18R (1981) 24" Ductile iron No < 5 None 2035 Project 5-67 will complete construction of the new force mains and pump station in 2029.
Bay Bridge (North/South under
the bay)
5-12 (1965)
5-18R (1981)
24"/22" Ductile iron with
polyethylene lining
No < 5 None 2035
15th Street 5-51 (2004) 10" Ductile iron No 10–15 None 2026 Project X-022 will complete rehabilitation of 15th Street Pump Station and force mains in 2036.
A Street 5-52 (2004) 8" Ductile iron No 10–15 None 2027 Project X-041 will complete rehabilitation of A Street Pump Station and force mains in 2036.
Crystal Cove 5-36 (1995) 8" Ductile iron No < 5 Follow up CCTV from pump station
side completed in March 2024
2027 Crystal Cove force mains are over 2,000 feet in length.
Project 5-66 will complete rehabilitation of Crystal Cove Pump Station in 2034.
MacArthur 7-68 (2025) 10” HDPE > 20 None 2035 Project 7-68 completed construction of the new dual force mains in 2025.
Main Street (Sunflower) 7-7 (1985) 30" Vitrified clay > 20 CCTV 2025 2028
Main Street (Baker East) 14-1-2 (1991) 42" Ductile iron Yes 5–10 CCTV 2020 2028 Project 7-65 will complete the Baker Force Main rehabilitation in 2025. CCTV inspection will be
conducted once the rehabilitation is complete. Main Street (Baker West) 14-1-2 (1991) 42" Ductile iron Yes < 5 None 2028
College 7-23-1 (2003) 18" Ductile iron No 5–10 None 2026 Project X-040 will complete rehabilitation of College Pump Station and force mains in 2038.
Slater (North) 11-17-1 (1998) 36" Ductile iron First pipe joint only 5–10 None 2025 Project 11-34 will rehabilitate Slater Pump Station and force mains by 2033.
Slater (South) 11-10-3 (1981) 24" Ductile iron First pipe joint only < 5 CCTV and UT 2015 2025
Edinger 11-9 (1965) 18" Cast iron < 5 UT 2015, 2021, 2022, 2025 Follow-up UT
2026
Project 11-33, currently in design, will construct the new Edinger Pump Station and Force Main
by 2029. Significant metal loss was seen in 2023 and prior assessments, but will be repaired in
2025.
Seal Beach 3-62 (2022) 36" HDPE > 20 None 2032 New force mains were constructed in 2022.
Westside 3-36R (1995) 20" Ductile iron No < 5 2016 None Westside Pump Station will be abandoned by project 3-68 by 2034. Force main access is
limited and will be assessed on an as-needed basis.
Yorba Linda 2-16-2 (1975) 30" Ductile iron First pipe joint only < 5 2014 None The pump station will be decommissioned via MPC-003 ahead of CIP project 2-73, which will
remove the pump station permanently by 2031.
Please see the comprehensive Acronyms and Abbreviations list for definitions.
2025 Asset Management Plan
82
System Overview - Pipelines
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – ALL TRUNKLINES
2.2.24 Collection System Pipeline and Manhole Asset Management Summaries
Collection System Pipeline and Manhole Remaining Useful Life
Trunklines
No
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Baker-Main 74 4.9 12% —a —a
Bushard 11 1.4 6% 3 1%
Coast 16 1.1 10% 3 2%
Euclid 13 0.7 2% 69 16%
Interplantb 0 0.0 0% 0 0%
Knott 37 2.6 4% 94 12%
Miller-Holder 22 1.6 5% 43 16%
Newhope 26 1.7 6% 82 23%
Newport 20 1.0 4% 30 8%
Santa Ana River Interceptor 66 3.0 6% 160 28%
Sunflower 15 0.5 1% —a —a
Talbert 77 5.9 70% —a —a
Total 377 24.2 7% 484 11%
Please see the comprehensive Acronyms and Abbreviations list for definitions.
a Only trunklines with greater than 50% manhole inspections completed are included in this table and in the Asset Management
System Summaries. b Interplant Trunkline in this table refers only to IPE assets. Interplant Trunkline assets are included with Knott Trunkline in its Asset
Management System Summary.
2025 Asset Management Plan
83
System Overview - Manholes
2025 Asset Management Plan
84
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – ALL TRUNKLINES
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Cleaning of Inverted Siphons and Large-Diameter Pipelines – Large-diameter pipes (> 42
inches) are not cleaned within OC San’s routine cleaning program, and CCTV footage does
not identify sediment or debris below the waterline. This poses the potential risk of debris
buildup, which can negatively impact normal sewer operation and downstream facilities if
suddenly released.
OC San has historically completed sonar inspections for large-diameter inverted siphons and
gravity sewers longer than 5 miles. Sediment reports and hydraulic modeling data were used
to confirm the theoretical cleansing state of each pipeline segment inspected.
OC San has an active procurement to create a new blanket contract for cleaning and
sonar inspection of inverted siphons and large diameter pipelines. The work includes
pre-cleaning and post-cleaning sonar inspections to validate the effectiveness of each
cleaning. Notice to proceed (NTP) is expected to be issued in early 2026.
OC San is developing an ongoing large-diameter cleaning program, and the list of
recommended large-diameter inverted siphons and gravity sewers to regularly clean will be
finalized in the future.
Additionally, some large-diameter inverted siphons and gravity sewers may be significantly
larger than required for current and future capacity needs and are not self-cleansing. In the
future, OC San staff will evaluate which assets are good candidates for sliplining and will
recommend adding them to upcoming CIP projects or the creation of new projects. OC San
staff will further validate recommended sliplining projects as part of the work for the 2028
Collections Capacity Study.
Condition Assessment of Gravity Pipelines – The current calendar-based CCTV program
inspects pipelines every 5 years. For assets with 10 years or less RUL, inspections every 5
years may not be frequent enough to properly track asset deterioration rates.
It is recommended that the frequency of monitoring of pipelines with RUL scores of 4
or 5 be increased from every 5 years to a higher frequency (that is, every 2.5 years).
OC San staff recommend exploring the optimization of condition assessment resources for
gravity pipeline assets such that condition assessment frequencies are closely tied to RUL
and likelihood of failure and balanced given available resources.
Condition Assessment of Inverted Siphons – Inverted siphons are regularly cleaned but are
not inspected because they are typically inaccessible using CCTV equipment. Without this
inspection data, it is difficult to accurately know the current condition and RUL of these assets.
OC San canceled its initial procurement in 2024 for inverted siphon condition assessment and
removed incidental repairs entirely from the project scope due to the low number of bidders
and uncompetitive pricing.
OC San grouped inverted siphons into planning studies based on risk, location, asset
characteristics, and the total rough order of magnitude cost for each grouping. The first
study, PS25-01, includes the assessment of seven inverted siphons in the cities of
Anaheim, Newport Beach, and Orange. The goals of this study also include evaluating
the remaining useful life of each inverted siphon, recommending capital improvements,
and identifying the best practices for assessment and rehabilitation of inverted siphons.
PS25-01 was launched in 2025, NTP is expected to be issued in mid-2026, and the
study is expected to be completed by early 2028.
Recommendations and lessons learned from PS25-01 will inform the remainder of the
inverted siphon Condition Assessment Program development. Given the potential complexity
(bypassing and/or temporary plugging, traffic control, etc.) for inverted siphon inspections,
variety in inspection methods that may be required, and different asset priorities, the
Condition Assessment Program is currently phased into five additional planning studies. It is
anticipated this effort will span over multiple years.
Groundwater Infiltration – CCTV identified areas experiencing significant groundwater
infiltration in the Baker-Main, Bushard, Euclid, Knott, Miller-Holder, Newport, SARI, Sunflower,
and Talbert trunkline systems. Specifically, significant groundwater infiltration is most
prominent in the I-405 corridor in Costa Mesa, throughout the western regional trunklines of
the Knott trunkline in Cypress, Los Alamitos, etc.; Jamboree Road and the Balboa Peninsula in
Newport Beach; and various locations in Anaheim, Buena Park, Fountain Valley, Huntington
Beach, Irvine, Garden Grove, Orange, Santa Ana, and Westminster.
Areas with significant groundwater infiltration that are co-located with fractures or
tuberculation are not suitable for chemical grouting and therefore have been identified
as high-priority point repairs; refer to individual trunkline key issue tables for more
details. Areas with groundwater infiltration that do not have any other defects are lower
priority.
Projects 1-23, 2-78, 3-60, 3-64C, 5-69, 7-65, 11-35, X-085, X-129, X-130, X-134, and X2-79
will address most areas with significant groundwater infiltration.
Manhole Access – OC San staff have identified specific locations where manholes are difficult
to access for maintenance. Current issues exist with manholes in some OC San easement
areas and along the Santa Ana River, an easement area on California Department of
Transportation property near I-5 and State Route 91, an easement area encroached upon by
residences near the Wintersburg Channel in Huntington Beach, Crystal Cove, the southern
portion of the Santa Ana River, Orange Park Acres, and North Tustin.
OC San staff will track and prioritize access issues to address key concerns. High-
priority access improvements will continue to be recommended as Small Projects or
additions to an existing CIP project.
Lower-priority access improvements will be recommended within the scope of future CIP
projects where feasible.
2025 Asset Management Plan
85
System Overview - Baker-Main Pipelines
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – BAKER-MAIN TRUNKLINE
1
Major Assets and Condition Information - Baker-Main Pipelines
Asset Type
To
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(m
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)
No
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Vitrified Clay
≤ 18" Ø 18.8 337 58 1 44
> 18” Ø 15.9 245 43 1 24
Reinforced Concrete
15” Ø 0.004 1 32 - 1
> 42" Ø 4.9 50 32 - 3
Ductile Iron
24” - 42” Ø 0.50 3 32 - -
Polyvinyl Chloride
10"–21” Ø 0.04 2 23 - -
Please see the comprehensive Acronyms and Abbreviations list for definitions.
2025 Asset Management Plan
86
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – BAKER-MAIN TRUNKLINE
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Missing and Undersized Air Jumpers – One out of 10 inverted siphon/reduction locations in the
Baker-Main Trunkline system do not have air jumpers. Two out of 10 inverted siphon/reduction
locations in the Baker-Main Trunkline system have air jumpers that do not provide adequate air flow
capacity and therefore are undersized.
N/A Project X-129 includes constructing a new air jumper. Project X-078 includes replacing existing air
jumpers with upsized air jumpers or constructing multiple air jumpers in the same location to
provide the required air flow capacity.
Pipeline Defects – CCTV identified several areas with significant fracturing of vitrified clay pipe
(VCP) pipelines. The largest concentration of fractures is in the Fairview Trunkline. There are also
areas of significant root intrusion in and around existing fractures. Some blockages in OC San
sewer mains may have contributed to a local sanitary sewer overflow in Orange in 2021.
Root treatment work is planned to stop root growth and prevent further
damage to the pipelines prior to construction of Project 7-69.
Isolated defects elsewhere not included or near a CIP project have been
identified as high-priority defects. OC San staff are in the process of
determining whether some pipelines can be abandoned or otherwise
grouped together for 7-pack task orders to rehabilitate and/or repair the
pipelines.
Project 6-20 will rehabilitate the entire Fairview Trunkline to address pipeline fractures. Projects 7-
65, 7-69, and X-129 will also address fracturing with rehabilitation work.
Uninspected Gravity Pipelines – One gravity sewer within Plant No. 1 has never been inspected
in the Baker-Main Trunkline system. There is no condition data for this reach to determine field-
adjusted RUL. The downstream manhole is currently inaccessible due to construction activities.
Inspection will be completed after construction activities are completed in the
area via a CCTV work order in coordination with Plant No. 1 Operations.
N/A
Current and Future Projects
Project No. Project Title
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
7-65 Gisler-Redhill Interceptor Rehabilitation
6-20 Fairview Trunk Sewer Rehabilitation
7-69 North Tustin-Orange Sewer Improvements
X-129 South Coast Metro Sewer Rehabilitation
X-078 Inverted Siphon and Air Jumper Improvements
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
87
System Overview - Bushard Pipelines
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – BUSHARD TRUNKLINE
Major Assets and Condition Information - Bushard Pipelines
Asset Type
To
t
a
l
L
e
n
g
t
h
(m
i
l
e
s
)
No
.
o
f
P
i
p
e
s
Av
e
r
a
g
e
A
g
e
(y
e
a
r
s
)
No
.
o
f
P
i
p
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
5
No
.
o
f
P
i
p
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
4
Vitrified Clay
≤ 18" Ø 0.03 3 41 - -
> 18” Ø 8.7 97 58 - 10
Reinforced Concrete
≤ 42" Ø 6.3 35 75 - 1
> 42” Ø 5.5 48 26 - -
Fiberglass
≤ 42" Ø 1.0 8 27 - -
Polyvinyl Chloride
≤ 18" Ø 0.15 6 21 - -
> 18” Ø 0.08 2 23 - -
High-Density Polyethylene
22” Ø 0.06 2 27 - -
Steel
12"–26” Ø 0.06 4 16 - -
Please see the comprehensive Acronyms and Abbreviations list for definitions.
2025 Asset Management Plan
88
System Overview - Bushard Manholes
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – BUSHARD TRUNKLINE
Major Assets and Condition Information - Bushard Manholes
Asset Type
No
.
o
f
M
a
n
h
o
l
e
s
Av
e
r
a
g
e
A
g
e
(y
e
a
r
s
)
No
.
o
f
M
a
n
h
o
l
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
5
No
.
o
f
M
a
n
h
o
l
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
4
Concrete
≤ 48" Ø 35 66 - -
> 48" Ø 167 40 - 3
Please see the comprehensive Acronyms and Abbreviations list for definitions.
2025 Asset Management Plan
89
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – BUSHARD TRUNKLINE
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Bushard Diversion Box – Project MP-307 restored valve functionality to the Bushard Diversion Box. However, the
potential for ragging issues still exists in the structure.
N/A Permanent improvements including a change in isolation valve type, etc. are included in Project
X-096.
Improperly Abandoned Manhole Under I-5 – In 2017, CCTV discovered a partially abandoned manhole in the Magnolia
Street sewer underneath the I-5 travel lanes. Subsequent investigations in 2022 confirmed the manhole structure had
significant liner delamination and aggregate visible.
N/A Project FRC-0014 will complete the abandonment of the manhole under I-5.
Manhole Defects – CCTV identified one manhole that has significant liner delamination. N/A Manhole is suitable for repair under the manhole repair and rehabilitation blanket contract.
Missing Air Jumpers – One out of eight inverted siphon/reduction locations in the Bushard Trunkline system does not
have air jumpers.
N/A Project X-130 includes constructing a new air jumper.
Pipeline Defects – CCTV identified an area with significant fracturing of VCP pipelines, primarily in Magnolia Street and
Orangethorpe Avenue in the cities of Anaheim and Fullerton.
N/A Projects X-085 and X2-79 will address all the major fractures by rehabilitating the pipelines.
Current and Future Projects
Project No. Project Title
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
FRC-0014 Magnolia Sewer Manhole Abandonment at I-5
X-096 Bushard Diversion Structure Improvements
X-130 McFadden-Bolsa Sewer Rehabilitation
X-085 Hoover-Western Sewer Rehabilitation
X2-79 Fullerton-Brea Sewer Rehabilitation
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
90
System Overview - Coast Pipelines
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – COAST TRUNKLINE
Major Assets and Condition Information - Coast Pipelines
Asset Type
To
t
a
l
L
e
n
g
t
h
(m
i
l
e
s
)
No
.
o
f
P
i
p
e
s
Av
e
r
a
g
e
A
g
e
(y
e
a
r
s
)
No
.
o
f
P
i
p
e
s
w
i
t
h
RU
L
S
c
o
r
e
o
f
5
No
.
o
f
P
i
p
e
s
w
i
t
h
RU
L
S
c
o
r
e
o
f
4
Vitrified Clay
≤ 18” Ø 2.1 32 66 - 16
> 18” Ø 4.4 58 64 - -
Reinforced Concrete
> 42” Ø 5.0 57 41 - -
Please see the comprehensive Acronyms and Abbreviations list for definitions.
2025 Asset Management Plan
91
System Overview - Coast Manholes
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – COAST TRUNKLINE
Major Assets and Condition Information - Coast Manholes
Asset Type
No
.
o
f
M
a
n
h
o
l
e
s
Av
e
r
a
g
e
A
g
e
(y
e
a
r
s
)
No
.
o
f
M
a
n
h
o
l
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
5
No
.
o
f
M
a
n
h
o
l
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
4
Concrete
≤ 48" Ø 39 57 - 1
> 48" Ø 111 55 - 2
Please see the comprehensive Acronyms and Abbreviations list for definitions.
2025 Asset Management Plan
92
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – COAST TRUNKLINE
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Pipeline Defects – CCTV identified an area with significant fracturing of VCP pipelines, primarily in Lake Street and
Atlanta Avenue. There are also areas of significant root intrusion in and around existing fractures.
Most pipelines in Project X-126 have root intrusion in and around existing
fractures. Root treatment work is planned to stop root growth and prevent
further damage to the pipelines prior to construction of Project X-126.
Project X-126 will address all the major fractures by rehabilitating the pipelines.
Uninspected Gravity Pipelines – Two gravity sewers within Plant No. 2 have never been inspected in the Coast
Trunkline system. There is no condition data for these reaches to determine field-adjusted RUL. A CCTV inspection
was attempted in 2024, and due to flow conditions, CCTV could not be completed. It is suspected heavy flow from
the force mains from Bitter Point Pump Station may be the cause of the adverse flow conditions.
OC San staff plans to re-attempt the CCTV inspections in coordination with the
operation of Bitter Point Pump Station.
N/A
Current and Future Projects
Project No. Project Title
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
X-126 Lake-Atlanta Sewer Rehabilitation
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
93
System Overview - Euclid Pipelines
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – EUCLID TRUNKLINE
Major Assets and Condition Information - Euclid Pipelines
Asset Type
To
t
a
l
L
e
n
g
t
h
(m
i
l
e
s
)
No
.
o
f
P
i
p
e
s
Av
e
r
a
g
e
A
g
e
(y
e
a
r
s
)
No
.
o
f
P
i
p
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
5
No
.
o
f
P
i
p
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
4
Vitrified Clay
≤ 18" Ø 4.4 79 69 - 5
> 18" Ø 16.0 203 51 - 6
Reinforced Concrete
≤ 42" Ø 2.4 15 53 - -
> 42" Ø 11.6 131 36 - 2
Polyvinyl Chloride
≤ 18" Ø 0.05 5 26 - -
> 18" Ø 0.10 7 16 - -
Steel
10" Ø 0.01 3 16 - -
High-Density Polyethylene
26" Ø 0.05 1 16 - -
Please see the comprehensive Acronyms and Abbreviations list for definitions
2025 Asset Management Plan
94
System Overview - Euclid Manholes
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – EUCLID TRUNKLINE
Major Assets and Condition Information - Euclid Manholes
Asset Type
No
.
o
f
M
a
n
h
o
l
e
s
Av
e
r
a
g
e
A
g
e
(y
e
a
r
s
)
No
.
o
f
M
a
n
h
o
l
e
s
w
i
t
h
RU
L
S
c
o
r
e
o
f
5
No
.
o
f
M
a
n
h
o
l
e
s
w
i
t
h
RU
L
S
c
o
r
e
o
f
4
Concrete
≤ 48" Ø 43 62 1 21
> 48" Ø 333 44 1 29
Brick
≤ 48" Ø 48 65 - 17
> 48” Ø 2 57 - -
Please see the comprehensive Acronyms and Abbreviations list for definitions.
2025 Asset Management Plan
95
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – EUCLID TRUNKLINE
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Manhole Defects – CCTV identified areas with significant liner delamination and some structures
with exposed rebar throughout the Euclid Trunkline system, but especially in the vicinity of Coyote
Hills and northern Fullerton.
Nearly all manholes in Projects X2-79 and X-078 may reach the end of their
useful lives prior to construction starting. Therefore, these manholes need
some rehabilitation work performed via the manhole repair and rehabilitation
blanket contract to prevent failure prior to the start of Projects X2-79 and X-078.
Projects X2-79 and X-078 will address most of the liner delamination and exposed rebar by
rehabilitating the manhole structures. Other manholes not included or near a CIP project are
suitable for repair under the manhole repair and rehabilitation blanket contract.
Pipeline Defects – CCTV identified an area with significant fracturing of VCP pipelines in northern
Fullerton. There is also one pipeline with root intrusion in and around existing fractures.
Root treatment work is planned to stop root growth and prevent further damage
to the pipelines prior to construction of Project X2-79.
Project X2-79 will address all the major fractures by rehabilitating the pipelines.
Undersized Air Jumpers – Six out of 12 inverted siphon/reduction locations in the Euclid
Trunkline system have air jumpers that do not provide adequate air flow capacity and therefore
are undersized.
N/A Projects X2-79 and X-078 include replacing existing air jumpers with upsized air jumpers or
constructing multiple air jumpers in the same location to provide the required air flow capacity.
Current and Future Projects
Project No. Project Title
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
X2-79 Fullerton-Brea Sewer Rehabilitation
X-078 Inverted Siphon and Air Jumper Improvements
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
96
System Overview - Knott Pipelines
Note: Map and data table include IPE pipelines and manholes.
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – KNOTT TRUNKLINE
Major Assets and Condition Information - Knott Pipelines
Asset Type
To
t
a
l
L
e
n
g
t
h
(m
i
l
e
s
)
No
.
o
f
P
i
p
e
s
Av
e
r
a
g
e
A
g
e
(y
e
a
r
s
)
No
.
o
f
P
i
p
e
s
w
i
t
h
RU
L
S
c
o
r
e
o
f
5
No
.
o
f
P
i
p
e
s
w
i
t
h
RU
L
S
c
o
r
e
o
f
4
Vitrified Clay
≤ 18" Ø 9.1 130 57 7 13
> 18" Ø 34.9 484 52 2 14
Reinforced Concrete
≤ 42" Ø 4.7 58 31 - -
> 42" Ø 17.2 138 49 - 1
Polyvinyl Chloride
≤ 18" Ø 1.2 17 20 - -
Fiberglass Reinforced Plastic
≤ 42" Ø 0.07 2 17 - -
> 42" Ø 1.1 8 19 - -
High-Density Polyethylene
18" Ø 0.01 2 12 - -
> 18" Ø 0.03 3 16 - -
Ductile Iron
20" Ø 0.02 1 66 - -
Steel
4" Ø 0.02 1 16 - -
Unknown
18” Ø 0.01 2 67 - -
Please see the comprehensive Acronyms and Abbreviations list for definitions.
2025 Asset Management Plan
97
System Overview - Knott Manholes
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – KNOTT TRUNKLINE
Major Assets and Condition Information - Knott Manholes
Asset Type
No
.
o
f
M
a
n
h
o
l
e
s
Av
e
r
a
g
e
A
g
e
(y
e
a
r
s
)
No
.
o
f
M
a
n
h
o
l
e
s
w
i
t
h
RU
L
S
c
o
r
e
o
f
5
No
.
o
f
M
a
n
h
o
l
e
s
w
i
t
h
RU
L
S
c
o
r
e
o
f
4
Concrete
≤ 48" Ø 272 59 8 40
> 48" Ø 534 44 5 41
Please see the comprehensive Acronyms and Abbreviations list for definitions.
2025 Asset Management Plan
98
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – KNOTT TRUNKLINE
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Missing and Undersized Air Jumpers – Five out of 19 inverted siphon/reduction
locations in the Knott Trunkline system do not have air jumpers. One out of 19 inverted
siphon/reduction locations in the Knott Trunkline system has an air jumper that does not
provide adequate air flow capacity and therefore is undersized.
N/A Project X-061 includes constructing a new air jumper at two locations. Project X-078 includes replacing an
existing air jumper with an upsized air jumper or constructing multiple air jumpers in the same location to
provide the required air flow capacity. Three other locations do not require air jumpers due to lack of normal
surcharge conditions at two locations and an infeasible location at the end of a force main.
Manhole Defects – CCTV identified areas with significant liner delamination and some
structures with exposed rebar, primarily in Buena Park, Cypress, and Los Alamitos.
Eleven manholes included in Projects 11-35, X-061, X-085, and X2-79 may
reach the end of their useful lives prior to construction starting. Therefore,
these manholes need some rehabilitation work performed via the manhole
repair and rehabilitation blanket contract to prevent failure prior to the start of
Projects 11-35, X-061, X-085, and X2-79.
Projects 3-60, 3-64C, 11-35, X-061, X-085, X-130, and X2-79 will address most of the liner delamination and
exposed rebar by rehabilitating the manhole structures. Other manholes are suitable for repair under the
manhole repair and rehabilitation blanket contract.
Pipeline Defects – CCTV identified several areas with significant fracturing of VCP
pipelines. Most fractures are concentrated in northern Huntington Beach, Cypress, and
small-diameter sewers owned and operated by the City of Anaheim but maintained by
OC San in the northern central area of the trunkline. There are also areas of significant
root intrusion in and around existing fractures. A blockage due to roots occurred in one
pipe segment in northern Huntington Beach in 2022. Lastly, one pipeline with fractures
also has a very large, encrusted deposit from groundwater infiltration.
Root treatment work was completed to stop root growth and prevent further
damage to the pipelines prior to the construction of Project 11-35.
OC San staff plan to use the industrial cleaning blanket contract to remove
the large deposit to prevent a flow obstruction prior to construction of Project
X-130.
Isolated defects elsewhere not included or near a CIP project have been
identified as high-priority spot repairs. OC San staff are in the process of
grouping point repairs together for 7-pack task orders.
Projects 3-60, 3-64C, 11-35, X-061, X-085, and X-130 will address most fractures by rehabilitating the
pipelines. OC San staff will also coordinate with the City of Anaheim pertaining to operation and maintenance
of the local small-diameter sewers OC San maintains for the City of Anaheim under an active agreement.
Uninspected Gravity Pipelines – Three gravity sewers have never been inspected in
the Knott and Ellis Avenue Trunkline systems. There is no condition data for these
reaches to determine field-adjusted RUL.
A CCTV inspection was attempted in 2025 for a location upstream of the Steve Anderson
Lift Station wet well. The CCTV contractor abandoned the inspection to prevent loss of
the camera equipment to highly turbulent conditions, despite OC San staff lowering the
wet well level as much as feasible.
OC San staff will review inspection technologies as alternatives to CCTV for
the gravity sewer upstream of the Steve Anderson Lift Station wet well.
There are no known access issues for the remaining two uninspected gravity
sewers. Inspections will be completed via future CCTV PM work orders or
separate CCTV work orders.
N/A
Current and Future Projects
Project No. Project Title
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
3-64C Cypress Trunk Sewer Rehabilitation - West
3-60 Knott-Miller Holder - Artesia Branch Rehabilitation
11-35 North Huntington Beach Sewer Rehabilitation
X-130 McFadden-Bolsa Sewer Rehabilitation
X2-79 Fullerton-Brea Sewer Rehabilitation
X-085 Hoover-Western Sewer Rehabilitation
X-078 Inverted Siphon and Air Jumper Improvements
X-061 Imperial Highway Trunk Sewer Rehabilitation
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
99
System Overview - Miller-Holder Pipelines
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – MILLER-HOLDER TRUNKLINE
Major Assets and Condition Information - Miller-Holder Pipelines
Asset Type
To
t
a
l
L
e
n
g
t
h
(
m
i
l
e
s
)
No
.
o
f
P
i
p
e
s
Av
e
r
a
g
e
A
g
e
(
y
e
a
r
s
)
No
.
o
f
P
i
p
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
5
No
.
o
f
P
i
p
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
4
Vitrified Clay
≤ 18" Ø 2.9 50 65 - 4
> 18" Ø 9.4 114 63 9 5
Reinforced Concrete
> 42" Ø 19.3 101 68 - 1
Ductile Iron
≤ 18" Ø 0.07 5 43 3 -
Polyvinyl Chloride
24" Ø 0.02 1 23 - -
Please see the comprehensive Acronyms and Abbreviations list for definitions.
2025 Asset Management Plan
100
System Overview - Miller-Holder Manholes
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – MILLER-HOLDER TRUNKLINE
Major Assets and Condition Information - Miller-Holder Manholes
Asset Type
No
.
o
f
M
a
n
h
o
l
e
s
Av
e
r
a
g
e
A
g
e
(y
e
a
r
s
)
No
.
o
f
M
a
n
h
o
l
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
5
No
.
o
f
M
a
n
h
o
l
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
4
Concrete
≤ 48" Ø 68 66 - 5
> 48" Ø 197 64 1 37
Please see the comprehensive Acronyms and Abbreviations list for definitions.
2025 Asset Management Plan
101
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – MILLER-HOLDER TRUNKLINE
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Capacity – The Collections Capacity Evaluation Study completed in 2019 conducted a detailed capacity
analysis to identify the location of capacity deficiencies during dry and PWWFs. During existing PWWFs,
capacity issues were identified in a portion of the Hoover-Western Sub-Trunk. However, Project PS20-
02 did not confirm hydraulic analysis results justified the need for a capital improvement project and
recommended more flow monitoring for further hydraulic analysis.
Additional flow monitoring and hydraulic analysis are
recommended to be included in the upcoming Collections
Capacity Study Master Plan Update.
Project X-085 includes upsizing a portion of the Hoover-Western Sub-Trunk to address existing capacity
issues.
Manhole Defects – CCTV identified areas with significant liner delamination and some structures with
exposed rebar, primarily in Buena Park and Westminster.
N/A Projects 3-60, X-078, and X-130 will address most of the liner delamination and exposed rebar by
rehabilitating the manhole structures. Other manholes are suitable for repair under the manhole repair and
rehabilitation blanket contract.
Missing Air Jumpers – Two out of five inverted siphon/reduction locations in the Miller-Holder Trunkline
system do not have air jumpers.
N/A Projects 3-60 and X-078 both include constructing a new air jumper at each location.
Pipeline Defects – CCTV identified several areas with significant fracturing of VCP pipelines. Most
fractures are concentrated in Buena Park and Westminster.
N/A Projects 3-60, X-085, and X-130 will address all the fractures by rehabilitating the pipelines.
Current and Future Projects
Project No. Project Title
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
3-60 Knott-Miller Holder-Artesia Branch Rehabilitation
X-130 McFadden-Bolsa Sewer Rehabilitation
X-085 Hoover-Western Sewer Rehabilitation
X-078 Inverted Siphon and Air Jumper Improvements
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
102
System Overview - Newhope Pipelines
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – NEWHOPE TRUNKLINE
Major Assets and Condition Information - Newhope Pipelines
Asset Type
To
t
a
l
L
e
n
g
t
h
(m
i
l
e
s
)
No
.
o
f
P
i
p
e
s
Av
e
r
a
g
e
A
g
e
(y
e
a
r
s
)
No
.
o
f
P
i
p
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
5
No
.
o
f
P
i
p
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
4
Vitrified Clay
≤ 18” Ø 3.1 61 51 2 6
> 18” Ø 11.3 168 46 1 3
Reinforced Concrete
> 42” Ø 7.9 42 65 - -
Fiberglass Reinforced Plastic
≤ 42” Ø 0.02 1 7 - -
> 42” Ø 4.5 50 7 - -
Ductile Iron
≤ 18” Ø 0.93 18 30 - 1
> 18” Ø 0.38 7 45 4 -
Cast Iron
12” Ø 0.91 7 66 7 -
Steel
12” Ø 0.07 6 16 - -
Polyvinyl Chloride
≤ 18” Ø 0.03 2 31 1 -
> 18” Ø 0.01 3 21 1 -
Please see the comprehensive Acronyms and Abbreviations list for definitions.
2025 Asset Management Plan
103
System Overview - Newhope Manholes
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – NEWHOPE TRUNKLINE
Major Assets and Condition Information - Newhope Manholes
Asset Type
No
.
o
f
M
a
n
h
o
l
e
s
Av
e
r
a
g
e
A
g
e
(y
e
a
r
s
)
No
.
o
f
M
a
n
h
o
l
e
s
w
i
t
h
RU
L
S
c
o
r
e
o
f
5
No
.
o
f
M
a
n
h
o
l
e
s
w
i
t
h
RU
L
S
c
o
r
e
o
f
4
Concrete
≤ 48" Ø 53 63 1 21
> 48" Ø 304 40 7 53
Please see the comprehensive Acronyms and Abbreviations list for definitions.
2025 Asset Management Plan
104
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – NEWHOPE TRUNKLINE
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Broken Siphon – In 2020, CCTV discovered the Olive Sub-Trunk siphon has a hole in the
pipeline. In addition, CCTV showed corrosion issues in upstream manholes due to an ineffective
air jumper.
N/A Project FE20-08 will replace a portion of the Olive Sub-Trunk siphon, rehabilitate other portions,
reconstruct the air jumper, and restore the siphon into service.
Manhole Defects – CCTV identified several areas with significant liner delamination and some
structures with exposed rebar located in Anaheim, Fullerton, Garden Grove, Orange, Placentia,
and Santa Ana. There are also three isolated manholes in the southern reaches of the Newhope
Trunkline system with severe liner detachment, surface aggregate missing, and visible
reinforcement.
20 manholes between Projects 2-73 and 2-78 may reach the end of their
useful lives prior to construction starting. Therefore, these manholes need
some rehabilitation work performed via the manhole repair and rehabilitation
blanket contract to prevent failure prior to the start of Projects 2-73 and 2-78.
Projects FE20-08, FE21-08, 2-73, and 2-78 will address most of the liner delamination and
exposed rebar by rehabilitating the manhole structures. Other manholes are suitable for repair
under the manhole repair and rehabilitation blanket contract.
Pipeline Fracturing – CCTV identified several areas with significant fracturing of VCP pipelines.
Most fractures are concentrated in Fullerton.
N/A Project 2-73 will address all the fractures by rehabilitating or abandoning the pipelines.
Pipeline Tuberculation – CCTV identified a few ductile iron pipelines in Craig Regional Park with
no lining or significant delamination and widespread tuberculation. The last CCTV inspections for
these assets were completed in 2013.
New CCTV inspections are needed for suspected unlined ductile iron
pipelines. CCTV inspection frequency will be increased for all ductile iron pipe
with polyethylene linings. A polyethylene lining system is not typical and not
recommended for ductile iron pipe gravity sewers.
Project 2-73 will address all the delamination and tuberculation by rehabilitating the pipelines.
Uninspected Gravity Pipelines – Nine gravity sewers have never been inspected in the Newhope
Trunkline system. There is no condition data for these reaches to determine field-adjusted RUL.
This includes several cast-iron pipelines in a temporarily out-of-service pipeline in Craig Regional
Park that are largely inaccessible.
N/A All nine gravity sewers, including the temporarily out-of-service cast iron pipelines in Craig
Regional Park, are proposed to be abandoned as part of Project 2-73.
Current and Future Projects
Project No. Project Title
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
FE20-08 Olive Sub-Trunk Siphon Rehabilitation at Santa Ana River
FE21-08 Newhope-Placentia Sewer Manhole Replacements
2-73 Fullerton-Placentia Sewer Facilities Demolition and Rehabilitation
2-78 Atwood-Santa Ana Canyon Sewer Rehabilitation
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
105
System Overview - Newport Pipelines
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – NEWPORT TRUNKLINE
Major Assets and Condition Information - Newport Pipelines
Asset Type
To
t
a
l
L
e
n
g
t
h
(m
i
l
e
s
)
No
.
o
f
P
i
p
e
s
Av
e
r
a
g
e
A
g
e
(y
e
a
r
s
)
No
.
o
f
P
i
p
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
5
No
.
o
f
P
i
p
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
4
Vitrified Clay
≤ 18” Ø 5.7 113 53 - 12
> 18” Ø 8.2 176 40 - 6
Ductile Iron
≤ 18” Ø 1.3 18 32 - 1
> 18” Ø 2.6 35 36 - 1
Polyvinyl Chloride
≤ 18” Ø 0.13 3 12 - -
> 18” Ø 2.6 36 25 - -
High-Density Polyethylene
≤ 18” Ø 0.13 2 33 - -
> 18” Ø 0.66 14 31 - -
Cast Iron
≤ 18” Ø 0.12 2 50 - -
Reinforced Concrete
48” Ø 0.02 1 13 - -
Please see the comprehensive Acronyms and Abbreviations list for definitions.
2025 Asset Management Plan
106
System Overview - Newport Manholes
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – NEWPORT TRUNKLINE
Major Assets and Condition Information - Newport Manholes
Asset Type
No
.
o
f
M
a
n
h
o
l
e
s
Av
e
r
a
g
e
A
g
e
(y
e
a
r
s
)
No
.
o
f
M
a
n
h
o
l
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
5
No
.
o
f
M
a
n
h
o
l
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
4
Concrete
≤ 48" Ø 98 71 1 18
> 48" Ø 297 31 - 11
Fiberglass Reinforced Plastic
≤ 48" Ø 2 18 - -
> 48" Ø 2 21 - -
Please see the comprehensive Acronyms and Abbreviations list for definitions.
2025 Asset Management Plan
107
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – NEWPORT TRUNKLINE
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Manhole Defects – CCTV identified several areas with significant liner delamination and some
structures with exposed rebar concentrated in East Coast Highway and Fifth Avenue.
One manhole in Project 5-69 may reach the end of its useful life prior to
construction starting. Manhole coring work and lidar scanning is in progress to
perform further analysis and confirm the RUL of the manhole.
Project 5-69 will address most of the liner delamination and exposed rebar by rehabilitating the
manhole structures. Other manholes are suitable for repair under the manhole repair and
rehabilitation repair blanket contracts.
Missing and Undersized Air Jumpers – One out of two inverted siphon locations in the Newport
Trunkline system do not have air jumpers. The second inverted siphon location in the Newport
Trunkline system has air jumpers that do not provide adequate air flow capacity and are therefore
undersized.
Both inverted siphon locations in the Newport Trunkline system will be
inspected under Project PS25-01.
Project 5-69 includes the construction of new sewer to replace the inverted siphon. Project X-078
includes replacing existing air jumpers with upsized air jumpers or constructing multiple air
jumpers in the same location to provide the required air flow capacity.
Pipeline Fracturing – CCTV identified several areas with significant fracturing of VCP pipelines.
The fractures are scattered throughout the Newport Trunkline system.
Root treatment work is planned to stop root growth and prevent further damage
to the pipelines prior to construction of Project 5-69.
Isolated defects elsewhere not included or near a CIP project have been
identified as high-priority point repairs. OC San staff are in the process of
grouping spot repairs together for 7-pack task orders.
Project 5-69 will address the fractures by rehabilitating the pipelines.
Pipeline Tuberculation – CCTV identified ductile iron pipes in East Coast Highway with
significant liner delamination and tuberculation.
CCTV inspection frequency will be increased for all ductile iron pipe with
polyethylene linings. A polyethylene lining system is not typical and not
recommended for ductile iron pipe gravity sewers.
Project 5-69 will address the liner delamination and tuberculation by rehabilitating the pipelines.
Uninspected Gravity Pipelines – Four gravity sewers have never been inspected in the Newport
Trunkline system. There is no condition data for these reaches to determine field-adjusted RUL.
For one gravity sewer within Plant No. 2, a CCTV inspection was attempted in 2024 but could not
be completed due to flow conditions. It is suspected that heavy flow from the force mains from
Bitter Point Pump Station may be the cause of the adverse flow conditions. One gravity sewer in
Back Bay Drive is constantly accumulating debris and must be inspected immediately after
cleaning. Another gravity sewer upstream of Bitter Point Pump Station is normally surcharged by
the pump station’s wet well downstream. The last gravity sewer has no known access issues.
OC San staff plans to re-attempt two of the CCTV inspections in coordination
with the operation of Bitter Point Pump Station. Additionally, OC San staff plans
to re-attempt the Back Bay Drive sewer inspection immediately after a future
cleaning. Inspections will be completed via future CCTV PM work orders or
separate CCTV work orders.
N/A
Current and Future Projects
Project No. Project Title
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
PS25-01 Siphon Assessments in Anaheim, Newport Beach, and Orange
5-69 East Coast Highway Sewer Rehabilitation
X-078 Inverted Siphon and Air Jumper Improvements
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
108
System Overview - SARI Pipelines
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – SARI TRUNKLINE
Major Assets and Condition Information - SARI Pipelines
Asset Type
To
t
a
l
L
e
n
g
t
h
(m
i
l
e
s
)
No
.
o
f
P
i
p
e
s
Av
e
r
a
g
e
A
g
e
(y
e
a
r
s
)
No
.
o
f
P
i
p
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
5
No
.
o
f
P
i
p
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
4
Vitrified Clay
≤ 18" Ø 5.0 113 60 43 11
> 18" Ø 17.4 266 46 - 7
Reinforced Concrete
42" Ø 1.5 19 42 - -
> 42" Ø 20.5 119 49 - 1
Fiberglass Reinforced Plastic
≤ 42" Ø 0.29 2 16 - -
> 42" Ø 3.6 39 14 - -
High-Density Polyethylene
≤ 18" Ø 0.54 4 11 - -
> 18" Ø 0.74 3 14 - -
Ductile Iron
> 18" Ø 0.80 10 38 2 2
Steel
30" Ø 0.03 2 14 - -
Polyvinyl Chloride
12" Ø 0.01 1 9 - -
Please see the comprehensive Acronyms and Abbreviations list for definitions.
2025 Asset Management Plan
109
System Overview - SARI Manholes
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – SARI TRUNKLINE
Major Assets and Condition Information - SARI Manholes
Asset Type
No
.
o
f
M
a
n
h
o
l
e
s
Av
e
r
a
g
e
A
g
e
(
y
e
a
r
s
)
No
.
o
f
M
a
n
h
o
l
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
5
No
.
o
f
M
a
n
h
o
l
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
4
Concrete
≤ 48" Ø 128 64 8 81
> 48" Ø 393 44 1 70
Fiberglass Reinforced Plastic
> 48" Ø 49 14 - -
Please see the comprehensive Acronyms and Abbreviations list for definitions.
2025 Asset Management Plan
110
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – SARI TRUNKLINE
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Capacity – The Collections Capacity Evaluation Study completed in 2019 conducted a
detailed capacity analysis to identify the location of capacity deficiencies during dry and
PWWFs. During existing PWWFs, capacity issues were identified in the Taft Branch.
N/A Project 2-49 will address existing wet weather capacity issues in the Taft Branch.
Manhole Defects – CCTV identified widespread areas with significant liner delamination
and some structures with exposed rebar. The defects are primarily concentrated in Anaheim,
Orange, and Placentia.
Some manholes in Projects 2-78 and X-134 may reach the end of their useful lives prior to
construction starting. Therefore, these manholes need some rehabilitation work performed via
the manhole repair and rehabilitation blanket contract to prevent failure prior to the start of
Projects 2-78 and X-134.
Projects 2-49, 2-73, 2-78, and X-134 will address most of the liner delamination and
exposed rebar by rehabilitating the manhole structures. Other manholes are suitable for
repair under the manhole repair and rehabilitation and manhole frame and cover repair
blanket contracts.
Missing and Undersized Air Jumpers – Four out of 13 inverted siphon/reduction locations
in the SARI Trunkline system do not have air jumpers. Two out of 13 inverted
siphon/reduction locations in the SARI Trunkline system have air jumpers that do not provide
adequate air flow capacity and are therefore undersized.
One location is a dual-barrel inverted siphon underneath the Santa Ana River channel with no
nearby bridges that could be used for typical air jumper construction. Existing maintenance
needs and issues with deep air jumper systems with condensate pumps are significant. There
are also no residences nearby the upstream and downstream manholes. Therefore, OC San
staff recommend performing additional monitoring and testing if there is sufficient H2S and air
pressure to warrant constructing an air jumper of any type.
Projects 2-78 and X-134 include constructing a new air jumper at three locations.
Projects 2-78 and X-078 include replacing existing air jumpers with upsized air jumpers
or constructing multiple air jumpers in the same location to provide the required air flow
capacity.
Pipeline Defects – CCTV identified several areas with significant fracturing of VCP
pipelines. Most fractures are concentrated in Anaheim and Orange.
N/A Projects 2-73, 2-78, and X-134 will address fracturing issues by rehabilitating the
pipelines.
Unlined Ductile Iron Pipe – There are four pipeline assets that according to record
information are unlined ductile iron pipe and have significantly surpassed their theoretical
RUL based on installation date. The inverted siphon barrels have never been inspected.
Two gravity pipes were re-inspected and confirmed to be unlined ductile iron pipe in poor but
not severe condition. Inverted siphon barrels are to be inspected under Project PS25-01.
Continued monitoring of the gravity pipes is recommended until the inverted siphon barrels
are also inspected.
Ductile iron pipelines with less than 10 years of RUL will be grouped into either 7-pack
task orders or a new Small Project.
Uninspected Gravity Pipelines – One gravity sewer in the SARI Trunkline system has
never been inspected. There is no condition data for this reach to determine field-adjusted
RUL. This gravity sewer has a tight horizontal curve that may not allow for CCTV inspection
and is blocked by a diversion board.
OC San staff to discuss CCTV inspection approach with pipeline CCTV contractor. N/A
Current and Future Projects
Project No. Project Title
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
2-49 Taft Branch Improvements
PS25-01 Siphon Assessments in Anaheim, Newport Beach, and Orange
2-73 Fullerton-Placentia Sewer Facilities Demolition and Rehabilitation
X-134 Olive-Taft Sewer Rehabilitation
2-78 Atwood-Santa Ana Canyon Sewer Rehabilitation
X-078 Inverted Siphon and Air Jumper Improvements
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
111
System Overview - Sunflower Pipelines
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – SUNFLOWER TRUNKLINE
Major Assets and Condition Information - Sunflower Pipelines
Asset Type
To
t
a
l
L
e
n
g
t
h
(m
i
l
e
s
)
No
.
o
f
P
i
p
e
s
Av
e
r
a
g
e
A
g
e
(y
e
a
r
s
)
No
.
o
f
P
i
p
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
5
No
.
o
f
P
i
p
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
4
Vitrified Clay
≤ 18" Ø 7.2 149 49 - 5
> 18" Ø 17.9 259 51 - 8
Reinforced Concrete
42" Ø 1.3 9 54 - -
> 42" Ø 7.5 68 48 - -
Ductile Iron
20" – 24" Ø 0.64 13 31 1 -
Reinforced Plastic Mortar
15" Ø 0.11 3 54 - -
Polyvinyl Chloride
30" Ø 0.05 3 17 - -
Asbestos Cement
10" Ø 0.04 1 61 1 -
Unknown
18" Ø 0.01 1 8 - -
Please see the comprehensive Acronyms and Abbreviations list for definitions.
2025 Asset Management Plan
112
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – SUNFLOWER TRUNKLINE
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Missing and Undersized Air Jumpers – Two out of 11 inverted siphon/reduction locations in
the Sunflower Trunkline system do not have air jumpers. Four out of 11 inverted
siphon/reduction locations in the Sunflower Trunkline system have air jumpers that do not
provide adequate air flow capacity and are therefore undersized.
N/A Project X-129 includes constructing a new air jumper at one location, but the second location does not
require an air jumper due to lack of normal surcharged conditions. Project X-078 includes replacing
existing air jumpers with upsized air jumpers or constructing multiple air jumpers in the same location
to provide the required air flow capacity.
Pipeline Defects – CCTV identified several areas with significant fracturing of VCP pipelines.
Most fractures are concentrated in Orange and Santa Ana with others located in Newport
Beach and Tustin.
Root treatment work is planned to stop root growth and prevent further
damage to the pipelines prior to construction of Project X-066.
Projects FRC-0007, 7-69, X-066, and X-129 will address fractures by rehabilitating the pipelines.
Uninspected Gravity Pipelines – One gravity sewer in the Sunflower Trunkline system has
never been inspected. There is no condition data for this reach to determine field-adjusted
RUL.
N/A This gravity sewer is proposed to be abandoned-in-place as part of Project 7-68 (see Collection
System - Pump Station Summary for project information).
Current and Future Projects
Project No. Project Title
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
FE18-13 Redhill Relief Sewer Relocation at SR-55
FRC-0007 Redhill Relief Sewer Liner Repair at SR-55
7-69 North Tustin-Orange Sewer Rehabilitation
X-129 South Coast Metro Sewer Rehabilitation
X-066 Orange Park Acres Sewer Rehabilitation
X-078 Inverted Siphon and Air Jumper Improvements
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
113
System Overview - Talbert Pipelines
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – TALBERT TRUNKLINE
Major Assets and Condition Information - Talbert Pipelines
Asset Type
To
t
a
l
L
e
n
g
t
h
(m
i
l
e
s
)
No
.
o
f
P
i
p
e
s
Av
e
r
a
g
e
A
g
e
(y
e
a
r
s
)
No
.
o
f
P
i
p
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
5
No
.
o
f
P
i
p
e
s
w
i
t
h
R
U
L
Sc
o
r
e
o
f
4
Vitrified Clay
≤ 18" Ø 0.13 6 50 2 1
> 18" Ø 5.0 70 72 40 4
Reinforced Concrete
42" Ø 1.1 10 57 1 9
> 42" Ø 2.1 29 55 3 17
Please see the comprehensive Acronyms and Abbreviations list for definitions.
2025 Asset Management Plan
114
ASSET MANAGEMENT SUMMARY – COLLECTION SYSTEM – TALBERT TRUNKLINE
Key Issues
Key Issues Short-Term Actions and Recommendations Long-Term Actions and Recommendations
Capacity – The Collections Capacity Evaluation Study completed in 2019 conducted a detailed capacity
analysis to identify the location of capacity deficiencies during dry and PWWFs. During existing PWWFs,
capacity issues were identified in the entire Greenville Trunkline. Project PS20-02 also confirmed hydraulic
analysis results justified the need for a capital improvement project.
N/A The entire Greenville Trunkline is proposed to be transferred to the City of Santa Ana and will no longer be an OC San
asset.
Missing Air Jumpers – Five out of six inverted siphon locations in the Talbert Trunkline system do not
have air jumpers.
N/A Projects 1-23 and X-129 include constructing new air jumpers at three locations. The two remaining locations are
included in the assets proposed to be transferred to the City of Santa Ana and will no longer be OC San assets.
Pipeline Fracturing – CCTV identified one VCP pipeline segment with significant fracturing. N/A Project X-129 will rehabilitate the fractured pipeline segment.
Reinforced Concrete Pipe Corrosion Damage – Most of the reinforced concrete pipe pipeline of the
Talbert Trunkline between I-405 and Bristol Street has moderate to severe surface aggregate loss in areas
not rehabilitated by past Project 1-17.
N/A Project 1-23 will rehabilitate the pipeline segments with moderate to severe surface aggregate loss.
Current and Future Projects
Project No. Project Title
20
2
5
20
2
6
20
2
7
20
2
8
20
2
9
20
3
0
20
3
1
20
3
2
20
3
3
20
3
4
20
3
5
20
3
6
20
3
7
20
3
8
20
3
9
1-23 Santa Ana Trunk Sewer Rehabilitation
X-129 South Coast Metro Sewer Rehabilitation
Please see the comprehensive Acronyms and Abbreviations list for definitions.
Types of Project Legend: CIP – Planning CIP – Design CIP – Construction Maintenance Project
2025 Asset Management Plan
115
Project No. Project Title Impacted Facilities Description of Work FY 23/24 FY 24/25 FY 25/26 FY 26/27 FY 27/28 FY 28/29 FY 29/30 FY 30/31 FY 31/32 FY 32/33 FY 33/34 FY 34/35 FY 35/36 FY 36/37 FY 37/38 P2-119 Central Generation Rehabilitation at Plant No. 2 Central Generation • Rehabilitation of engine generator support systems. J-117B Outfall Low Flow Pump Station Battery Backup, Switchgear, Motor Control Centers • Replace legacy battery systems, switchgear, and motor control center equipment. FE20-04 CenGen Cooling Water Pipe Replacement at Plant No. 2 Plant Water Piping • Replace existing plant water piping with new. J-135B Engine and Generator Overhauls Engine Generator • Overhaul the Engine Generators Numbers 1, 3, and 5. PRN-00536 Instrument Air Compressor Replacement Instrument Air Compressor System, and appurtenances • Install two new instrument air compressors and appurtenances. PRN-00211 Engine Lube Oil System Controls Upgrade Engine Generator • Install new instrumentation and controls onto the existing units. PRN-00427 Engine Emission Control System Redesign Engine Emission Control • Analyze and design new Catalyst Housings. PRN-00915 Engine Protection System Upgrade Engine Generator • Upgrade the Engine Condition Monitoring System on each engine. AI-195 Exhaust Heat Recovery Boiler Repair Heat Recovery System • Inspect and repair Boiler pressure vessels as required to maintain safety and reliability. AI-226 Engine Ignition Control System Obsolescence Repair Engine Generator • Install new ignition control systems onto each engine genset. AI-170 Engine PLC Upgrade Engine Generator • Pilot test a new engine PLC and replace obsolete PLCs with new ones.
3 Program Monitoring and Improvements
3.1 Program Monitoring
OC San has metrics to monitor and evaluate the Asset Management Program progress and
realized benefits. The metrics have been chosen to directly relate to the Asset Management
Program key objectives as follows:
• Take a proactive approach to repair, rehabilitate, and replace assets.
• Ensure assets are reliable and operating when needed.
• Minimize unplanned outages and equipment downtime.
• Manage risks associated with asset or service impairment through asset performance
optimization.
• Develop cost-effective management strategies for the long term.
• Strive to implement world-class asset management strategies through continual
improvement in OC San’s asset management practices.
The following metrics and maintenance key performance indicators (KPIs) were chosen to
demonstrate the effectiveness of the Asset Management Program and establish a baseline by
which to gauge future performance:
• Proactive maintenance percent is the percent of PM as a total of all maintenance
activities and demonstrates the effectiveness of the maintenance program (proactive
versus reactive). The percent of PM includes both predictive and PM of the assets.
• Break-in percent illustrates the amount of emergency work (or reactive work) as a
percent of total work in the process area. The break-in percent metric will give OC San
personnel a better understanding of unplanned outages and the causes of equipment
downtime. In Maximo®, the EAM system, this is described as a Level 50 priority. This is
also described as break-in work that is deemed “emergency” or “extremely urgent” by
staff.
• Maintenance costs and labor hours are presented by process area to illustrate the total
resources devoted to maintaining the process areas. The methods used to calculate each
metric are included in Appendix E. As the maintenance program moves toward a more
proactive state, these proportionate costs and labor hours should decline over time.
• Collections level of service results for sanitary sewer overflow (SSO) per 100 miles of
sewer, odor complaints in the collection system, and the CCTV inspection program
demonstrate the effectiveness of the combined efforts of Collections Maintenance, the
Regional Odor and Corrosion Control System (ROCCS) program, and the Gravity
Collections Condition Assessment Program as they pertain to asset management.
The metric data were sourced from Maximo® from fiscal year databases for FY 2020–2021
through FY 2024–2025 and are included in Appendix E for reference.
3.2 Program Metrics
3.2.1 Proactive Maintenance Percent
The proactive maintenance percent is the proportion of PM tasks compared to the total amount
of maintenance performed. An increase in proactive maintenance percent represents a shift
from a reactive to a proactive maintenance program. Table 3-1 and Table 3-2 provide the
annual average of the proactive maintenance percent for both Reclamation Plant No. 1 and
Reclamation Plant No. 2 for the past 5 years to illustrate recent trends and changes. For data
from earlier years, refer to previous annual AMPs. For PM goals, OC San typically aims for a
higher proportion of maintenance activities to be preventive rather than corrective, often
targeting around 70 to 80% preventive and 20 to 30% corrective, as these ratios tend to
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optimize efficiency and cost effectiveness. OC San emphasizes a strong focus on PM to
minimize unplanned corrective actions.
Many of the process areas at both plants were at or below 60%, indicating that improvement in
this area is likely over time as proactive maintenance programs are optimized and older facilities
are replaced.
Table 3-1. Proactive Maintenance Percent for Reclamation Plant No. 1
Process Area FY 20-21 FY 21-22 FY 22-23 FY 23-24 FY 24-25
Preliminary 39% 25% 41% 20% 18%
Primary 32% 40% 37% 46% 29%
Interplant 82% 59% 34% 17% 35%
Activated Sludge 64% 56% 58% 50% 44%
Trickling Filters 53% 47% 46% 46% 28%
Digesters 46% 47% 42% 37% 23%
Solids Handling Facilities 42% 44% 60% 46% 35%
Central Power Generation 62% 62% 53% 57% 51%
Electrical Distribution 65% 77% 77% 80% 70%
Utilities 30% 26% 32% 20% 25%
Table 3-2. Proactive Maintenance Percent for Reclamation Plant No. 2
Process Area FY 20-21 FY 21-22 FY 22-23 FY 23-24 FY 24-25
Preliminary 59% 55% 38% 36% 29%
Primary 35% 38% 36% 30% 26%
Activated Sludge 53% 50% 48% 43% 30%
Trickling Filters 57% 61% 49% 61% 62%
Effluent Disposal 35% 59% 39% 37% 25%
Digesters 55% 51% 47% 41% 33%
Solids Handling Facilities 53% 41% 49% 51% 35%
Central Power Generation 50% 67% 48% 48% 45%
Electrical Distribution 74% 75% 69% 64% 59%
Utilities 44% 43% 45% 35% 39%
At Plants No. 1 and No. 2, the proactive maintenance percent for the solids handling facility is
showing an increasing trend over the past 5 years, demonstrating the effectiveness of the
maintenance program. The proactive maintenance percent for preliminary treatment at Plant
No. 1 is in the lower range because Project P1-105, Headworks Rehabilitation, is in
construction. Corrective maintenance of high-rate mixing pumps at Plant 1 digesters increased
in FY 2024-2025 compared to the previous fiscal year. Major service at the thickening centrifuge
spare unit and Dewatering Centrifuge 2 replacement were among the noteworthy tasks at the
solids handling facility. Activated Sludge Facility No. 1 is another aging facility at Plant No. 1 that
had a higher percentage of corrective maintenance last year. At Plant 2, digesters, solids
handling, and Activated Sludge facilities received an increased number of corrective
maintenance activities.
Overall, the pump stations have proactive maintenance percentages over 50% as shown in
Table 3-3. Decreases in percentages are indicative of emergency work that was required and
will be reflected in the break-in percentage illustrated later in this chapter. A Street and
Westside and Yorba Linda Pump Stations had a 25% decline in PM work last year. The main
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issues at pump stations were recurring electrical and instrumentation problems resulting in the
significant reduction in PM work.
Table 3-3. Proactive Maintenance Percent for Pump Stations
Pump Station FY 20-21 FY 21-22 FY 22-23 FY 23-24 FY 24-25
A Street 85% 67% 60% 72% 47%
15th Street 85% 85% 84% 62% 73%
Lido 42% 72% 50% 38% 59%
Bay Bridge 34% 45% 37% 56% 45%
Rocky Point 84% 76% 69% 51% 47%
Bitter Point 76% 84% 74% 69% 62%
Seal Beach 65% 50% 61% 38% 25%
Westside 74% 80% 64% 73% 48%
Edinger 79% 74% 44% 69% 63%
Slater 86% 73% 78% 59% 60%
College 69% 86% 72% 64% 42%
Crystal Cove 91% 80% 90% 55% 69%
Yorba Linda 92% 99% 80% 82% 55%
Main Street 66% 76% 74% 69% 51%
MacArthur 88% 83% 61% 71% 50%
Table 3-4 demonstrates average percent of proactive work orders for the process areas at each
plant (not including the interplant, effluent disposal, electrical, and utilities) and the pump
stations. The data shows a slight decreasing trend in the annual average proactive work for both
plants and pump stations.
Table 3-4. Annual Average Proactive Work for Process Areas
Proactive Work FY 20-21 FY 21-22 FY 22-23 FY 23-24 FY 24-25
Plant No. 1 47% 53% 45% 43% 33%
Plant No. 2 49% 52% 45% 44% 37%
Pump Stations 74% 75% 67% 62% 53%
3.2.2 Break-in Percent
Break-in percent illustrates the amount of emergency work (or reactive work) as a percent of
total maintenance work hours in the process area. Typically, the break-in percent metric should
track closely with the inverse of the proactive maintenance percent because one is a measure
of the proactive maintenance program and the other is a measure of unplanned outages or a
reactive maintenance response (service requests with priority 40 and 50 levels). Success in
break-in percentage is measured as a consistent downward trend over time. for Plant No. 1 are
shown in Table 3-5 and break-in percentages for Plant No. 2 are shown in Table 3-6.
The Plant No. 1 Preliminary Treatment Area had a high break-in percent and a decrease in
proactive maintenance due to Project P1-105 construction and equipment shutdown demands.
Last year, the break-in percentage peaked at 37% in the Interplant area due to vandalism in the
area south of Plant No. 1.
The Primary Treatment Area has shown relative stability in break-ins. Although there was a
slight increase in FY 2024–2025 due to mechanical issues at basins in addition to a reclaimed
line break and repairs and the aging odor control facility, the trend is generally stable. Utility
break-ins also stayed above 30%, with the majority of issues associated with plant water and
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reclaimed water line repairs. The remaining areas at Plant No. 1 have shown stable trends with
overall numbers below 30%.
At Plant No. 2, the data shows an increase in break-in percent in areas with current construction
projects and the need for shutdowns and tie-ins, including J-117B. All process areas had break-
in percentages within the acceptable range of below 30% at Plant No. 2, with the Solids
Handling and Effluent Disposal areas showing improving trends.
Table 3-5. Break-in Percent for Reclamation Plant No. 1
Process Area FY 20-21 FY 21-22 FY 22-23 FY 23-24 FY 24-25
Preliminary 24% 43% 29% 55% 42%
Primary 23% 28% 38% 25% 27%
Interplant 7% 0% 61% 26% 37%
Activated Sludge 11% 8% 9% 15% 12%
Trickling Filters 18% 36% 21% 26% 24%
Digesters 27% 19% 24% 17% 20%
Solids Handling Facilities 24% 20% 16% 27% 22%
Central Power Generation 14% 23% 25% 20% 25%
Electrical Distribution 10% 6% 7% 13% 12%
Utilities 26% 21% 24% 36% 31%
Table 3-6. Break-in Percent for Reclamation Plant No. 2
Process Area FY 20-21 FY 21-22 FY 22-23 FY 23-24 FY 24-25
Preliminary 11% 17% 25% 22% 24%
Primary 23% 26% 25% 22% 21%
Activated Sludge 10% 12% 16% 18% 29%
Trickling Filters 19% 22% 27% 13% 20%
Digesters 13% 12% 11% 26% 22%
Solids Handling Facilities 21% 26% 26% 28% 16%
Central Power Generation 20% 13% 9% 23% 25%
Electrical Distribution 14% 6% 15% 18% 18%
Utilities 15% 29% 16% 13% 16%
Effluent Disposal 15% 17% 24% 28% 13%
The pump station break-in percent is shown in Table 3-7. Lido, Seal Beach, Edinger, and
College had the most break-ins during the last year mainly due to electrical, instrumentation,
and alarm issues. Many aging pump stations, such as Bay Bridge, Edinger, and Slater, also had
a high break-in percent that reflects their RUL and age. Bay Bridge and Edinger Pump Stations
have replacement projects that are in progress, while Slater Pump Station rehabilitation is
scheduled to start in a few years. The Seal Beach Pump Station Replacement Project is
currently under construction and is demonstrating lower proactive maintenance activity and a
higher break-in percentage. On average, 75% of the pump stations had a break-in percentage
of less than 30%.
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Table 3-7. Break-in Percent for Pump Stations
Pump Station FY 20-21 FY 21-22 FY 22-23 FY 23-24 FY 24-25
A Street 6% 7% 31% 18% 29%
15th Street 6% 12% 11% 22% 19%
Lido 35% 24% 44% 38% 38%
Bay Bridge 31% 38% 31% 23% 27%
Rocky Point 7% 13% 19% 46% 29%
Bitter Point 14% 11% 25% 19% 22%
Seal Beach 20% 36% 25% 28% 40%
Westside 3% 14% 18% 16% 18%
Edinger 0% 22% 53% 27% 40%
Slater 3% 16% 13% 25% 23%
College 11% 12% 24% 35% 38%
Crystal Cove 6% 1% 4% 9% 9%
Yorba Linda 10% 0% 5% 19% 10%
Main Street 4% 1% 12% 21% 22%
MacArthur 11% 1% 18% 23% 19%
Table 3-8 shows an average break-in percentage for Plant Nos. 1 and 2 and the pump stations.
On average, Plant No. 1 and pump stations had a higher break-in percentage than Plant No 2.
This year’s break-in percentages have remained consistent with last year’s.
Table 3-8. Annual Average of Break-in Percentages for OC San Facilities
Process Area FY 20-21 FY 21-22 FY 22-23 FY 23-24 FY 24-25
Plant No. 1 18% 21% 25% 26% 25%
Plant No. 2 16% 18% 19% 21% 20%
Pump Stations 11% 14% 22% 25% 25%
The trend in emergency call-back work for electrical and mechanical assets is shown on
Figure 3-1 and Figure 3-2, respectively, and reflects the demand older assets can have on
maintaining the reliability of a facility.
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Figure 3-1. Electrical Emergency Work Orders
Figure 3-2. Mechanical Emergency Work Orders
The number of electrical “emergency” work orders and associated hours increased primarily due
to electrical outages at the pump stations. The mechanical emergency work increased primarily
due to Plant No. 1 headworks and primary treatment mechanical failures. Two major emergency
works at Plant No. 1 were the issues associated with Power Building 2 12kV switchgear and
headworks MSP-2 repairs. In FY 2024-2025, on average, about 50% of emergency mechanical
call backs were to support issues at Plant No. 1, mainly at the solids handling facility to support
centrifuges and the cake pump. Plant No. 2 also had the highest number of break-ins at the
solids handling facility. Electrical break-in and emergency work is expected to trend down as
more electrical projects are implemented to replace or upgrade aging assets (e.g., P1-105, FR1-
0018).
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3.2.3 Maintenance Costs and Labor Hours
OC San uses the maintenance costs and labor hours over time as trend indicators to indicate
the number of resources devoted to reliably maintaining the process areas. Figure 3-3 shows
maintenance costs (materials and services) per fiscal year, broken down by process area at
Plant No. 1. Solids handling and digesters are consistently high-cost areas. Dewatering
Centrifuge No. 3 bearing replacement, major service for the thickening centrifuge spare unit,
and repairing digester mixing pumps were among the costliest maintenance activities.
The data indicate that there was a large increase in maintenance costs at the Plant No. 1
Primary Treatment Area in FY 2024–2025. Repair of Clarifier 8 and 28 chains and flights and
Sedimentation Basin 16/18 sludge pump no. 1 were among the costliest maintenance activities.
Figure 3-3. Graph of Maintenance Costs (Materials and Services) at Plant No. 1
Figure 3-4 shows Maintenance labor hours by fiscal year, broken down by process area at Plant
No. 1. The labor hours are high at the Plant No. 1 secondary facility because of the older
equipment at AS1, which is scheduled for rehabilitation under Project P1-140. The labor hours
are also high at the solids handling facility because the thickening and dewatering process has
more complex equipment that requires more staff to operate and maintain. In FY 2024–2025,
Final Clarifier 18 chain and flight repair, Sunflower Pump 2 bearing replacement and Biotower
No. 10 fan repair were among the most labor-intensive activities at Plant No. 1. Overall, the
labor hour graph follows the same trend as material and services.
$-
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Plant 1 Maintenance Cost -Materials & Services
FY21/22 FY22/23 FY23/24 FY24/25
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Figure 3-4. Graph of Maintenance Labor Hours at Plant No. 1
Figure 3-5 and Figure 3-6 present the maintenance costs (materials and services) and labor
hours per fiscal year, broken down by process area at Plant No. 2. Maintenance costs at Plant
No. 2 were significantly higher in FY 2024–2025 for the trickling filters, primarily due to the
replacement of all the three (Trickling Filters A through C) center mast assemblies, which cost
around $2.75 million in service charges. West RAS Pump 3 was also damaged last year from
excessive vibration, and it was repaired in May 2025 with significant material costs and service
charges.
In the activated sludge treatment area, Final Clarifier C flight repairs, Gas Compressor #2
service, Bar Screen #4 electrical issue repair, and Activated Sludge Reactors G and H oxygen
supply valve replacement were among the most labor-intensive maintenance activities.
At the trickling filter area, labor hours remain relatively low compared to other areas, which
indicates a less labor-intensive process with fewer mechanical components.
0
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6,000
7,000
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Plant 1 Maintenance Labor Hours
FY20-21 FY21-22 FY22-23 FY23-24 FY24-25
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Figure 3-5. Graph of Maintenance Costs (Materials and Services) at Plant No. 2
Figure 3-6. Graph of Maintenance Labor Hours at Plant No. 2
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Maintenance labor hours and costs for the pump stations are included in Figure 3-7 and
Figure 3-8. Significant increases in labor and material costs occurred at the Bay Bridge, Bitter
Point, and A Street Pump Stations. At Bay Bridge, MSP-2 was repaired, resulting more than
$102,000 in total repair cost (materials and services). In addition, MSP-4 was replaced, with
more than $25,000 in material costs. Currently, Project 5-67, Bay Bridge Pump Station
Replacement, is under construction to replace the existing pump station, which is one of OC
San’s oldest pump stations. The new PLC rack installation at Bitter Point was the costliest Work
Order in FY 2024–25, totaling $71,000. The pump station also shows high labor hours
associated with MSP-5 repairs (Figure 3-8).
At the A Street Pump Station, MSP-1 was removed and sent to the rebuild shop for repair,
which resulted in a substantial rise in maintenance costs. Figure 3-8 shows an increase in labor
hours at the Slater Pump Station compared to last year, attributed to the MSP-2 VFD failure and
repair.
Figure 3-7. Graph of Pump Station Maintenance Costs (Materials and Services)
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Pump Station Mainteance Costs -Materials & Services
FY20/21 FY21/22 FY22/23 FY23/24 FY24/25
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Figure 3-8. Graph of Pump Station Maintenance Labor Hours
3.2.4 Collections Level of Service Results
OC San monitors several levels of service goals pertaining to the collection system as a whole,
but a select subset are relevant to the activities, goals, and effectiveness of asset management.
This subset of collections level of service targets and results for the last 5 fiscal years are
presented in Table 3-9. The level of service goals for SSO and odor complaints were achieved
in FY 2024–2025, but the level of service goals for CCTV inspections were not achieved due to
unforeseen challenges as explained below.
SSO events are primarily caused by debris accumulation from daily wastewater flows as well as
root intrusion. Regular maintenance activities of Collections to clean sewers and the CCTV
program serve to identify potential SSOs and prevent them from occurring. Also refer to
Section 3.4.2.1 for details on the root control blanket contract for further PM efforts. In FY 2024–
2025, there were zero reported SSOs in the collection system.
Nuisance odors are actively managed by the ROCCS program through regular chemical dosing
and caustic dumps at key locations, H2S monitoring, etc. The number of odor complaints are
monitored to determine the effectiveness of chemical dosing, flow diversions, and other
methods to mitigate nuisance odors and prevent resulting corrosion damage to OC San’s
Collection assets. Given the precision and effectiveness of the ROCCS program, the number of
odor complaints has been below the level of service target for the past 5 fiscal years.
The condition of assets in the collection system are monitored via the CCTV program, which
inspects all gravity sewer and manhole assets every 5 years. OC San manages three CCTV
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contractors that provide inspection media and report to OC San with asset details as well as
defects discovered per National Association of Sewer Service Companies (NASSCO)
standards. Since the unexpected departure of its primary pipeline and manhole CCTV
contractor in 2024, OC San has restored the full capacity of its pipeline CCTV program and met
the level of service goal for CCTV pipeline inspections for FY 2024–2025. OC San could not
meet the level of service goal for manhole CCTV inspections for FY 2024–2025, but the
procurement for a new primary manhole CCTV contractor was completed in 2025. Therefore,
OC San is ramping up manhole CCTV inspections to meet the level of service goal for FY
2025–2026 and beyond.
In November 2020, OC San started conducting routine inspections of the collection
system manholes. OC San has been collating all manhole CCTV inspection data into the
Asset Management Program Info360 Asset software for further evaluation and to continue
building a comprehensive database of CCTV inspection data. Now that about 2,806 (64%) of
OC San’s manholes have been inspected since the start of the manhole CCTV program, OC
San can more accurately define future gravity sewer projects for manhole rehabilitation and
replacement.
Table 3-9. Collections Level of Service Results
Description
Level of
Service
Target
FY 20-21 FY 21-22 FY 22-23 FY 23-24 FY 24-25
SSO per 100 miles < 2.1 1.3 0.3 0.3 0 0
Number of Odor
Complaints
12 7 4 11 10 9
Miles of Pipeline
CCTV Inspections
70 60 71.9 69.1 38.4 71.1
Number of Manhole
CCTV Inspections
880 465 813 948 373 246
3.3 Maintenance Planning
OC San uses Maximo® as the computerized maintenance management system. All
maintenance-related activities are stored in Maximo®. In short, the information in Maximo®
makes up OC San’s Maintenance Plan. Maintenance planning primarily consists of PM and
PdM work orders. Currently, OC San proactively maintains over 66,000 assets stored in
Maximo®. This includes non-process-related assets such as HVAC equipment, lighting, mobile
equipment, etc. For the assets associated with process and treatment, there are typically
approximately 7,400 active PM work orders, and on average, 285 of those PM work orders are
related to PdM activities. A current summary and breakdown of the PMs and PdMs are shown
on Figure 3-9.
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Figure 3-9. PM Workorder Breakdown by Both Craft and Frequency
3.3.1 Projected Maintenance Costs
The projected maintenance costs for the next fiscal year are shown in Table 3-10. This accounts
for materials and services only but is inclusive of both reclamation plants and the collection
system. For historical maintenance expenditures, please refer to Chapter 4.
Table 3-10. Projected Maintenance Costs Next Fiscal Year
FY
2024–2025
Projected Maintenance Costs $23.07 million
3.4 Asset Management Program Accomplishments
Another way to measure Asset Management Program performance and effectiveness is by
exploring the accomplishments. The accomplishments identified in the following sections are
important because they focus on both long-term planning and accomplishments that helped
extend the useful life of critical assets, increase reliability, and reduce corrective maintenance
and break-ins, allowing OC San to meet the key objectives of the program.
3.4.1 Condition Assessment Program
Condition assessments are a key component of the Asset Management Program because they
provide vital information with respect to the condition and life expectancy of critical plant and
collections process structures and equipment. Condition assessments are planned in advance and
often conducted during scheduled maintenance activities. The Asset Management Team completed
approximately 38 different condition assessments during the last fiscal year, spending nearly
$1.1 million using an outside consultant and contractor. Figure 3-10 provides annual expenditures on
the two condition assessment contracts for the last 5 fiscal years. The overall expenditures show an
increasing trend, illustrating Asset Management’s dedication to knowing the current condition of OC
San’s major assets and performing incidental repairs following inspections to increase asset life and
reliability.
1665
1507
1596
Count of Preventive
Maintenance Work Orders
by Craft
MECH
ELEC
INST
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466
2151
958
399
PM Frequency
<6 Month
> 6 Month
1 YEARS
2 YEARS
3+ YEARS
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Figure 3-10. Condition Assessment Contract Expenditures
Condition assessments identify deficiencies and the general condition of the assets, but more
importantly provide recommendations for repairs or replacement and general timing of
rehabilitation/replacement projects. Some condition assessments included incidental repairs
following the assessment by the contractor that extended the useful life of the facility. The
following are some critical condition assessments completed in the last fiscal year:
• A condition assessment was completed on the West Primary Effluent Pipe at Plant No. 1
to investigate the high level at the effluent channel and effluent launder weirs
submergence during plant peak flow. Failed pipe joint liners were found throughout the
entire length of the 108-inch pipe. In a few locations, groundwater was observed to be
seeping in through the joint, indicating that the joints have failed at these locations. The
pipe was returned to service to alleviate the additional flow being diverted to Plant No. 2
and to bring AS2 back online. However, an expedited repair project is being developed to
repair the failed joints, and a future capital project will be developed to fully rehabilitate
both primary effluent pipes.
• Condition assessments were completed on the Primary Clarifiers J, K, L, M, N, O, P, and
Q at Plant No. 2 to assess the condition of structural and mechanical components.
Primary Clarifiers H and I will be assessed by fall 2025 for the completion of condition
assessments of all B and C side primary clarifiers. These assessments included draining
and cleaning of both basins and confined space entry to obtain photographs, take
measurements, and collect other assessment data. The assessment identified
deficiencies in the clarifiers and provided recommendations on timing to address the
issues in the short-term or long-term. Additionally, the OEM of the circular drives provided
visual and audible assessments at each primary clarifier with recommended actions to
maintain operability. Asset Management also coordinated the effort with support from
Maintenance Reliability to obtain drive oil samples for lab analysis. The results provided
additional condition data and additional recommendations for drive maintenance.
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Conditional Assessment Contract Annual Expenditures
Corrosion Engineer Contractor Support
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• Condition assessments on anaerobic digesters were completed during the scheduled
maintenance cleaning cycle to evaluate and extend the life of the assets when
deficiencies are discovered. The condition assessment included confined space entry,
corrosion assessment, sludge line cleaning and CCTV, concrete core sampling, and
incidental repairs. This year, two digesters were cleaned and assessed, including
Digesters 11 and 12 at Plant No. 1. Incidental repairs were completed by the condition
assessment contractor and Maintenance staff. Gas balance lines and digested sludge
conveyance lines at Plants No. 1 and 2 were also cleaned and assessed to help identify
and plan any necessary future rehabilitation projects.
• Condition assessments on DAFT A and D at Plant No. 2 were completed during a
scheduled project and maintenance shutdown. Severe corrosion was found on the moving
mechanisms. The corroded mechanisms were fully coated through contracts with the on-
call coating contractor, managed under the Asset Management Team. This approach
avoided the need for equipment replacement, resulting in significant cost savings. The
team plans to complete work on DAFT B and C next year.
• Condition assessments of Trickling Filter Clarifiers B and D at Plant No. 2 were completed
following planned preventive maintenance work. Broken parts and structural damage were
identified on the clarifier mechanisms and walkways. The damage was repaired through
Maintenance Projects with support from the on-call structural engineer. Following the
clarifier assessments, the downstream RSS Pump Station B was also assessed to
evaluate pump damage, plan overhauls, and prepare for spare pump procurement. The
team will continue work to complete the remaining four clarifiers.
• A condition assessment of the dewatering odor control biofilters at Plant No. 2 was
completed and found the media plugged and in need of replacement. A media
replacement project has been prepared to restore proper system function.
• A condition assessment of the force mains at the Slater Pump Station, which was
constructed in 1998, was conducted in August 2025 and found corrosion and coating
failure from a visual inspection within the pipes, confirming the aging condition of the force
mains. The pump station and force mains are set to be rehabilitated under Project 11-34,
with construction to be completed in 2033.
3.4.2 Collection System Assets
OC San pump stations, force mains, and gravity sewer system are vital assets for conveying
flow safely to the treatment plants. The Asset Management Program is continuously evaluating
ways to improve the resiliency and reliability of the system while maintaining the level of service
in all flow conditions. Some of the collection system initiatives and accomplishments are
identified in the following sections.
3.4.2.1 Proactively Monitoring and Managing Operational and Defect Issues
In the gravity collection system, there are some severe operational and structural defects that
are isolated from current and future projects. Examples of isolated and severe operational
defects include heavy root intrusion, infiltration runners and gushers, and large calcified
deposits. Root intrusion is the main cause of SSOs in many sanitary sewer systems, and heavy
infiltration over long periods of time can compromise soil support outside of the sewer pipe
throughout the pipe zone, leading to potential structural defects.
Similarly, infiltration can also lead to the development of large calcified deposits that may block
flows and prevent debris from passing downstream. Examples of isolated and severe structural
defects include single or heavily clustered segments of broken pipe and holes with voids and/or
soil visible. Broken pipe and holes indicate a higher likelihood of failure because they are
precursors to structural deformation and eventual collapse. Rather than create only Small
Projects to address current and future isolated and severe asset issues, cost-effective and
proactive maintenance-based approaches are being evaluated as follows:
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• Root Control: Blanket contract to strategically apply herbicide with a foaming agent into
select sewers for root control on an annual basis. The active ingredient in the root control
treatment kills roots in the sewer (without killing the plant they originate from) and
prevents regrowth typically for 2 to 3 years.
• Infiltration Control: Group isolated and severe infiltration into individual work packages
for execution by Maintenance on-call contractors. Utilize the industrial cleaning
Maintenance contract to remove large calcified deposits as needed to prevent
obstructions prior to rehabilitation. OC San is finalizing the scope of work packages and
priority.
• Isolated Structural Defect Repairs: Group isolated and severe structural defects into
individual work packages for execution by Maintenance on-call contractors. OC San is
finalizing scope of work packages and priority.
Although the CCTV program inspects all collection assets every 5 years, there are limitations to
the condition data that can be collected with CCTV equipment. Large-diameter sewers (greater
than 42 inches in diameter) are not regularly cleaned, and OC San does not have sufficient
knowledge on existing debris buildup because CCTV cannot capture debris below the waterline.
Therefore, the risk for an SSO due to debris accumulation or a high debris and ragging event at
the treatment plant headworks facilities could be higher than historical system performance would
suggest. In response, OC San performed sonar inspections of over 5 miles of large-diameter
sewers and inverted siphons to quantify debris and sediment and validated the cleansing state of
sewers suspected to be non-cleansing; all sonar inspections were completed in June 2023.
For the next steps, OC San is starting a new procurement to create a new blanket contract for
cleaning and sonar inspection of inverted siphons and large-diameter pipelines. The work
includes pre-cleaning and post-cleaning sonar inspections to validate the effectiveness of each
cleaning. NTP is expected to be issued in early 2026. Additionally, a draft large-diameter
cleaning program for inverted siphons and gravity sewers was completed in early 2024. This list of
recommended large-diameter inverted siphons and gravity sewers to regularly clean will be
finalized in the future.
While many of these proactive activities increase current costs and potentially identify more
defects, they result in better awareness of the true condition of OC San’s system, which allows for
a more planned approach to maintaining assets. This will foster a more cost-effective CIP
program while also reducing the risk of failures from unknown conditions.
3.4.2.2 Improving Collections Asset Management Workflow with Info360 Asset
OC San contracted with Autodesk in 2023 to upgrade its asset management software for gravity
sewers from Info Asset Planner to Info360 Asset (Info360). Autodesk imported available CCTV
inspection data and geographic information system (GIS) datasets into Info360 Asset and
created basic templates for risk modeling and decision trees. After the implementation project
was completed in 2024, OC San imported video and images associated with each historical
inspection to further centralize CCTV data.
With the risk modeling features, OC San updated its Likelihood of Failure (LoF) model to
balance incidence and severity of defects found during inspections, as well as incorporate soil
class spatial data. A new LoF to RUL model was also created in the software by updating the
mathematical model to revise RUL grade boundaries and creating a decision tree in Info360.
Additionally, using the additional GIS spatial data for major transportation corridors, public
buildings, OC San facilities, stormwater infrastructure, waterways, and pipeline diameter, a draft
Consequence of Failure model was created to enable risk modeling with the software. Lastly, a
preliminary calibration was performed for gravity sewer assets by performing multiple risk model
runs with different risk calculation methods, formulas, and weights applied.
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In 2025, OC San began to use the results of Info360 LoF to RUL and risk models to update RUL
scoring for gravity sewer assets with new inspections. The improved asset management
workflow consists of the following steps:
• CCTV contractor uploads new NASSCO standard exchange database, videos, and
images into Info360 Asset for review.
• PDF reports are provided separately via OneDrive. Since these reports contain the same
information as the digital reports in Info360 Asset, they do not need to be imported.
• OC San reviews and approves submittals in Info360 Asset. Errors in submittals are
returned to the CCTV contractor for correction prior to approval.
• OC San re-runs risk model and RUL decision tree model. The risk model results directly
feed into the RUL decision tree.
• OC San exports RUL decision tree results and compares them with scoring in the Asset
Registry. Any discrepancies in RUL scoring require additional engineering review to
resolve.
• To prioritize projects with equivalent RULs, OC San exports risk model results and applies
the corresponding risk scores to assets within projects. These scores are then used to
prioritize and rank projects and to update the AMP.
3.4.2.3 Proactively Addressing Collection Pump Station Challenges
Pump station reliability is critical to conveying wastewater to the treatment plants when gravity
flow is not an option. In the past, emergency break-in work has been required due to the failure of
critical assets such as isolation valves at some of the pump stations. Project FRC-0017 is
currently going out to bid and will be replacing various valves at Slater Pump Station. Project
FRC-0018 is currently in design and will be replacing various valves at Lido, Crystal Cove, A
Street, and 15th Street Pump Stations and replacing the wet well lining at A Street and 15th
Street Pump Stations. The timing of these projects considers risk and criticality to prevent
emergency work.
Pump station force mains are challenging to maintain and inspect since they operate under
pressure and are located underground. The force mains typically have limited access and
require significant supplemental services to perform a safe and effective condition assessment
(i.e., isolation and dewatering, temporary modification of pump station operations, excavation for
access, etc.). Consequently, the Asset Management Team has implemented a more robust
program for force main inspections in which all force mains will be inspected on a predictable
and recurring schedule. Please refer to the Force Main Summary and Inspection Plan in
Chapter 2, Collection System Pump Station and Force Main Asset Management Summaries, for
more information. In 2025, the Asset Management Team worked with Collections and
contractors to plan and perform the inspection of force mains at Slater Pump Station. Force
main inspections at 15th Street and College Pump Stations are planned for the upcoming 2026
year. The Asset Management Team will take lessons learned from the recent inspections to
continue planning inspections at other locations, which may pose challenges that require unique
or innovative inspection methods.
3.4.3 Treatment Plant Projects and Planning Studies
A major focus of the Asset Management Program is streamlining the replacement or repair of
critical assets to extend RUL ahead of planned CIP projects. The Asset Management Team
works in tandem with O&M to identify and create projects, provide construction bid documents,
and manage project implementation of some Maintenance Projects. In addition, the Asset
Management Team will take on important planning studies that look at ways to increase
treatment reliability and safety and be a good steward of the environment. Here are some
projects that were driven and led by the Asset Management and Maintenance Teams:
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• Several of OC San’s critical pumping systems are equipped with VFDs that have become
obsolete and can no longer be maintained properly. The Asset Management Team is
tracking all major VFDs and working on creating a VFD replacement program to
streamline replacement. Currently, Projects FE19-08, FE24-11, FR1-0011, and MPC-004
are in construction, and future CIP projects will replace obsolete VFDs at various locations
at Plant Nos. 1 and 2 and the pump stations.
• MP1-003, WSSPS Pump Replacement at Plant No. 1, currently in commissioning phase,
replaced pump no. 5 with a chopper pump to alleviate ragging and grit issues that
Maintenance has been facing at this pump station during the last few years. Once the
pump is up and running, it will be tested and observed for 6 to 9 months. If deemed
successful, the two remaining pumps will be replaced with chopper pumps as well via a
separate project.
• Main Sewage Pump No. 4 (MSP-4) at Plant No. 1, originally installed in 1988, has been in
operation for nearly 40 years and is approaching the end of its useful life. The pump is
scheduled to be replaced by CIP Project P1-105, currently in construction, within the next
couple of years. During the 2024 dry season, it was removed and reinstalled to facilitate
ongoing construction work in the headworks area, including the rehabilitation of the intake
and discharge piping. Following its reinstallation, the pump has experienced increased
vibration and bearing issues, necessitating its replacement with an available warehouse
spare. The pump replacement is currently in progress and is contingent upon the
completion of the intake pipe flange repair under P1-105.
• Project PS22-02, On-site Oxygen Generation Feasibility Study at Plant No. 2, was
completed in 2024 to evaluate whether an on-site oxygen generation system should be
implemented to provide better oxygen supply reliability to meet the High-Purity Oxygen-
Activated Sludge Plant demands in the next 20 years. Currently, OC San uses LOX
delivery and storage, but there was a shortage of LOX during the pandemic and the cost
of LOX is rising significantly. Based on the PS22-02 recommendations, P2-142 Oxygen
Gas Generation Facility at Plant No. 2 was developed to install a safe and reliable on-site
oxygen generation system.
• The A-Side Primary Clarifiers at Plant No. 2, originally constructed in the 1960s, are
unreliable due to age and deterioration or failure of existing components such as the basin
structure, geodesic dome, baffle components, and rotating mechanisms. Several
Maintenance Projects were completed to address these issues and provide short-term
reliability of the existing A-Side Primary Clarifiers until they are replaced by Project P2-
98A, which is under construction with an estimated completion in 2027. Project FE23-09
will provide rehabilitation of corroded sections of the rotating mechanisms and feed well
for Primary Clarifiers F and G. The design was fast tracked, and construction is in
progress.
• The grit basins at Plant No. 2 have experienced multiple power and control cable failures
that put the entire grit basin system at risk of becoming nonoperational. An urgent project,
MP2-013, along with multiple work orders by Maintenance, were executed to have
temporary cables installed above ground to bring the grit equipment back online. Project
P2-141 has also been fast-tracked to replace the cables permanently.
• MP2-018 is currently in progress to provide needed repairs and replacement of parts on
the spare main sewage pump and MSP-1. A future similar project will be initiated after the
completion of MP2-018 for MSP-5 and MSP-6. MSP-7 is currently being repaired under a
Maintenance work order.
• MP2-023 is currently in construction to replace the circular drive equipment for Primary
Clarifier N at Plant No. 2. Maintenance reported abnormal noise produced by the drive
previously, and Asset Management developed a scope to remove and replace the
obsolete drive with input and support from the OEM.
• P1 and P2 Digester Gas Dryer Replacement Project, FE23-01, will replace the
refrigerated digester gas drying systems at both plants to ensure that high-quality
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compressed digester gas is delivered to the CenGen engines for reliable energy
production. These dryers, located downstream of the digester gas compressors, are
essential for lowering the dew point and removing moisture from the gas. As a critical part
of the overall gas handling system, they play a key role in the reliable operation of both
the Interplant gas pipeline and the engine systems. Construction of FE23-01 began in FY
2024–2025. Following the completion of FE23-01 construction and the design phase of J-
124 Digester Gas Facilities Rehabilitation Project, the design of Project FE24-02 design
will begin. Project FE24-02 will focus on the replacing the chilled water heat exchanger
and moisture separator at Plant No. 1 as well as upgrading the instrumentation on the gas
dryer skids and the digester gas headers at both plants. These upgrades are planned to
take place after the successful completion of FE23-01 and J-124, ensuring proper
sequencing and seamless integration of the new systems into plant operations and
maintaining continuous, reliable performance.
• Plant No. 2 PEPS pumps are aging, and a previous wet well condition assessment
identified corrosion in the pump discharge line. A maintenance project successfully
completed an overhaul of Pump #4 in November 2022. MP2-0010 is in progress to
overhaul the remaining three pumps. The overhaul of Pump #3, including discharge pipe
replacement and additional repair work on Pump #4, was completed in 2025. The
remaining work on Pumps #1 and #2 will be completed over the next 2 years.
• MP2-015, Centrifuge Dewatering Lubrication Ring Pump Replacement at Plant No. 2, was
developed as a solution to replace the unreliable and hard-to-obtain pump parts, and the
project has moved forward into the construction phase and skid replacement. This is a
critical function that provides lubrication water to reduce pressure in the high-pressure
biosolids cake conveyance pipe from the centrifuge dewatering process to the cake
storage silos.
• Two Maintenance Projects were completed to coat the corroded DAFT A and D moving
mechanisms at Plant No. 2.
• MP2-031, Trickling Filter Clarifier B Repair at Plant No. 2, was completed to address
structural damage to the clarifier mechanism and included replacement of some broken
parts found from the condition assessment.
• FE23-04 was completed to replace the truck loading scales at Plant No. 2. This critical
project began as a maintenance effort to replace the severely corroded scales, which had
reached the end of their useful life after 25 years in service.
• Central Generation Facility Planning: The internal combustion engines at Plant No. 1 and
Plant No. 2 have accumulated significant operating hours and require major overhauls to
ensure reliable performance over the next decade or longer. Project J-135B successfully
completed comprehensive top-to-bottom overhauls of Engines No. 1 and No. 3 at Plant
No. 1, as well as Engines No. 1 and No. 5 at Plant No. 2. The project will continue its work
to complete the overhaul of Engine No. 4 at Plant No. 2. Following this, Project J-135C will
begin and, over the next 4 years, will complete the overhaul of the remaining engine
generator set at Plant No. 1 and the two remaining engine generator sets at Plant No. 2.
According to Planning Study PS20-04, completed in 2023, OC San’s current engines can
be reliably maintained for at least the next 10 years with these overhauls and proper
ongoing maintenance.
• Energy and Digester Gas Master Plan (EMP): From 2022 to 2024, EMP PS21-04
evaluated options for energy production and digester gas management, considering
emerging technologies, market trends, and permitting challenges. The study recommends
continuing to operate the CenGen facilities and interplant pipeline until they reach the end
of their useful life or market conditions drive replacement. Instead of a single solution, the
EMP provides a 5- to 10-year roadmap for eventual replacement and includes future
planning updates, recommending the plan be reviewed and updated in about 5 years to
reflect evolving energy and regulatory conditions. In addition, multiple projects are
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planned to upgrade and modernize support systems to ensure continued safe and reliable
operation of the facilities during this transition period.
• PS21-07 CenGen Digital Twin Project: OC San launched Project PS21-07 to model the
CenGen systems at Plant No. 1 and Plant No. 2 using digital twin technology integrated
with the APRICOT™ platform. These models support operations, maintenance,
troubleshooting, and process optimization. The project focused on developing digital twins
to analyze system performance, detect anomalies, and assess the long-term use of
anomaly detection tools. Given the plants’ 30+ years of operation, the study team
collected design documents, site data, and historical records to model key units, using
loop-based energy balance calculations where data was limited. Completed in May 2025,
the study provided recommendations to improve current systems and represented an
early milestone in the District’s use of artificial intelligence for smarter, data-driven plant
management, while acknowledging that many steps will still be needed to further optimize
performance and integrate advanced technologies.
• Various cable replacement maintenance projects were executed to address failed power
cables feeding critical equipment. These include MP1-011 for Main Sewage Pump No. 2
and MP1-016 for Gas Compressor No. 1 at Plant 1, and MP2-025 for Solids Contact
Blower No. 2 at Plant 2.
3.5 Asset Management Program Improvement Opportunities
The Asset Management Team continues to look at ways to improve the Asset Management
Program. To facilitate continuous improvement and move to a more data-driven program, the
team has created a Digital Asset Management Study (PS23-04).
The key objectives of this study are to:
• Allow available asset data to be analyzed more quickly and efficiently with the creation of
business intelligence (BI) dashboards.
• Enhance collaboration and data sharing between the Maintenance and Engineering teams
to support both short-term and long-term planning through BI dashboards.
• Provide a simpler and more robust means to convey asset management information in the
AMP and to executive leadership.
• Improve asset planning and prioritization of projects by developing a risk framework.
• Find additional program improvement opportunities based on industry trends and new
technology.
OC San has a lot of asset data available through various platforms, programs, and systems to
assess OC San’s major assets. One of the challenges is being able to utilize all that data more
efficiently in one location or platform. The Digital Asset Management Study will create asset
management and maintenance KPI BI dashboards, providing real-time asset information for
improved and defensible decision making and asset planning. Developing a risk assessment
framework will also improve asset management planning and project prioritizing with the goal of
having average risk scores for every project that take into account consequences of failure. The
following list describes the future Asset Management Program improvement opportunities, both
short-term and long-term, how the new Digital Asset Management Study will address many of
these improvement opportunities, and their status.
Condition Assessments:
• Track future condition assessments and proactively plan ahead with Operations for
assessments that require process interruptions. STATUS: In progress and led by internal
staff.
• Understand the condition and RUL of all of OC San’s major assets. STATUS: In progress
and led by internal staff.
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Remaining Useful Life:
• Consider ways to improve the accuracy of RUL in addition to the Condition Scoring
Guidelines already created. STATUS: In progress via Digital Asset Management Study.
• Create more condition scoring categories in the 1- to 10-year range as RUL accuracy
improves over time. STATUS: Future goal after completion of Digital Asset Management
Study.
Asset Registries:
• Ensure all pertinent asset information is included in the Asset Registries, including having
a plan to address all assets with a RUL less than 10 years. STATUS: Completed.
• Determine the best way to track major assets in the long term such that the Asset
Registries are compatible with BI dashboards. STATUS: In progress via Digital Asset
Management Study.
Data-Driven Asset Management:
• Develop asset management BI dashboards to track maintenance KPIs and key major
asset information, including RULs and future project planning. STATUS: In progress via
Digital Asset Management Study.
• Use BI dashboard algorithms to more accurately estimate asset performance and RUL.
STATUS: Future goal after completion of Digital Asset Management Study.
• Optimize CIP planning using BI cost and risk modeling and constraints. STATUS: Future
goal after completion of Digital Asset Management Study.
Risk Assessment (Likelihood and Consequence of Failure):
• Identify a risk assessment approach and develop a framework that fits OC San’s needs.
STATUS: In progress via Digital Asset Management Study.
• Use risk assessment modeling and scoring to better prioritize projects. STATUS: Future
goal after completion of Digital Asset Management Study.
These improvement opportunities will be evaluated and updated in the annual AMP. The Asset
Management Program must always consider the mission statement of “delivering the required
level of service, at the lowest life cycle cost, with an acceptable level of risk.”
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4 Budgetary Considerations
The AMP focuses on documenting short- to long-term planning of maintenance and capital
improvement projects to support effective budget development and sustainable operations.
OC San has been striving to identify more accurate medium- to long-term capital cash flow
requirements. Specifically, the Planning Division has developed a 20-year CIP, creating project
plans for forecasted rehabilitation, replacement, improvements, or expansion for the collection
system and treatment plants. The CIP budget is evaluated and updated on a yearly basis as
new information becomes available.
4.1 Capital Improvement Expenditures
The FY 2025–2026 Budget Update, updated in June 2025, includes updates to the current
20-year CIP outlay. Figure 4-1 shows the 20-year CIP outlay, which includes current and
projected future CIP projects. The FY 2025–2026 CIP Outlay is $289.0 million and is further
divided into process categories, as shown on Figure 4-2. Liquid Treatment, Collection Facilities,
and Other are the primary areas where the FY 2025–2026 CIP outlay will be spent.
For liquid treatment, Project P1-105, Headworks Rehabilitation at Plant No. 1, and Project P2-
98, Primary Treatment Rehabilitation at Plant No. 2, are expected to be the largest expenditures
of $24 million and $23 million, respectively, in FY 2025–2026. For Other, equipment purchases
are expected to be the largest expenditures of $59 million in FY 2025–2026. Lastly, for
collection facilities, Project 3-67, Seal Beach Pump Station Replacement, Project 5-67, Bay
Bridge Pump Station Replacement, and Project 11-33, Edinger Pump Station Replacement,
comprise nearly 40% of collections CIP spending at a combined expenditure of $25 million.
Figure 4-1. 20-Year CIP Outlay
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Figure 4-2. FY 2025–2026 CIP Outlay by Process – $289.0 Million
4.2 Maintenance Expenditures
4.2.1 Five-Year Historical Maintenance Expenditures
Figure 4-3 and Figure 4-4 show the historical actual versus budgeted operational and
maintenance expenditures for the treatment plants and collection system, respectively.
• The treatment plant expenditures include maintenance services and materials (budget
objects 54010 and 54020).
• The collection system expenditures include maintenance services and materials (budget
objects 54010, 54020, and 53180).
• These costs represent the O&M costs of fixed assets, including operationally funded
repair/replacement projects.
A variety of factors and variables are not reflected in the development of the budget. As a result,
some years reflect higher expenditures than budgeted. These factors include but are not limited
to the following:
• Annual inflation rates
• Manufacturing cost increases (which are also affected by increases in labor, raw material
demand, fuel, chemicals, and fees to expedite due to long lead times)
• Supply chain cost increases
• Geopolitical events
• Additional maintenance expenses that were unforeseen or unplanned but include
necessary repairs or procurements
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Figure 4-3. Five-Year Historical Maintenance Costs for Treatment Plants
Figure 4-4. Five-Year Historical Maintenance Costs for Collection System
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4.2.2 Three-Year Look-Ahead Maintenance Expenditures
Table 4-1 shows operationally funded projects identified to date and includes the projected
annual expenditures over the next 3 years. It is likely future projects and costs will fluctuate
based on the condition of assets as they age.
The projects are grouped by location (Collection System, Plant No. 1, Plant No. 2, and Joint),
and then sorted by the project start fiscal year. The list encompasses projects identified as of
August 1, 2025, with the following criteria:
• Estimated construction cost is equal to or greater than $50,000 and has projected
expenditures within the next 3 years.
• Projects on the list represent expenditures that are operationally funded.
• Some projects that are similar in nature have been combined into a single project for more
efficient project execution.
• Blanket purchase order contracts are not included.
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Table 4-1. Projected Annual Expenditures
PRN ALT. PROJECT NO. PROJECT TITLE FY 2025–
2026
FY 2026–
2027
FY 2027–
2028
3-YEAR
TOTAL COST
COLLECTIONS – TRUNKLINES AND DIVERSIONS
PRN-00373/PRN-00869 FRC-0014 Magnolia Sewer Manhole Abandonment at Interstate 5 $0 $131,000 $0 $131,000
PRN-00592 FRC-0007 Redhill Relief Sewer Liner Repair at State Route 55 $118,610 $0 $0 $118,610
PRN-00730l FRC-0010 Warner Avenue Vault Cover Improvements $900,300 $0 $0 $900,300
PRN-00766 FRC-0011 Richfield Sub-Trunk Encasement for BNSF Railway Addition $64,268 $56,831 $0 $121,099
COLLECTIONS – TRUNKLINES AND DIVERSIONS SUBTOTALS $1,083,178 $187,831 $0 $1,271,009
COLLECTIONS – PUMP STATIONS
PRN-00527/PRN-00790/PRN-00808/PRN-00949 FRC-0018 Valve Replacements at Lido, Crystal Cove, A St., and 15th St. Pump Stations $0 $0 $1,330,428 $1,330,428
PRN-00767 Lido PS Bathroom Reconfigure $50,000 $0 $0 $50,000
PRN-00734/PRN-00892 FRC-0017 Valve Replacements and Wet Well Access Improvements at Slater Pump Station $51,005 $719,996 $0 $771,001
PRN-00926 FRC-0020 College Pump Station Wet Well Rehabilitation $0 $2,530,000 $0 $2,530,000
COLLECTIONS – PUMP STATIONS SUBTOTALS $101,005 $3,249,996 $1,330,428 $4,681,429
PLANT 1
PRN-00492/PRN-0053 FR1-0011 VFD Replacements at Plant No. 1 $595,980 $387,637 $0 $983,617
PRN-00525 FR1-0005 CenGen and 12kV Service Center Switchgear Battery System Upgrades at Plant No. 1 $101,408 $0 $0 $101,408
PRN-01053 AS1 and AS2 Blowers Vane Actuators Replacement at Plant No. 1 $300,000 $115,000 $0 $415,000
PRN-01029 AS1/AS2 Bleach Line Repair at Plant No. 1 $440,000 $0 $0 $440,000
PRN-01003 MP1-017 Activated Sludge Final Clarifiers 11&13 Rebuild at Plant No. 1 $1,440,000 $0 $0 $1,440,000
PRN-01033 Thickening & Dewatering Building Lighting Improvements $0 $88,000 $0 $88,000
FR1-0016 Waste Sidestream Pump Station VFD replacements at Plant No. 1a $16,495 $0 $0 $16,495
FR1-0017 Trickling Filter Valve Replacement at Plant No. 1a $12,865 $0 $0 $12,865
PRN-00914 MP1-003 WSSPS-1 Pump Replacement at Plant No. 1 $100,000 $0 $0 $100,000
PRN-00815 FR1-0018 Dewatering Centrifuge Diverter Gate Improvements at Plant No. 1 $195,288 $1,090,828 $3,387 $1,289,503
PRN-00894/PRN-00890 FR1-0023 Secondary Treatment Area Cable Replacement at Plant No. 1 $3,475 $746,524 $0 $749,999
PRN-00898 FR1-0022 Backup Power for Laboratory Equipment at Plant No. 1 $75,168 $1,933 $0 $77,101
FR1-0020 Traffic Signal Installation at Ellis Avenue and Mt. Langley Street Intersection $746,250 $0 $0 $746,250
PRN-00569/PRN-00846 FR1-0019 Generator Protection Relay Replacements & Add Control Center Backup Power at Plant No. 1 $0 $143,692 $421,309 $565,001
PRN-00721/PRN-00821 FR1-0024 Power Building 7 & 8 Generator and Centrifuge Motor Disconnect Improvements at Plant No. 1 $0 $121,767 $543,233 $665,000
PRN-001000 Sunflower Pump Station Effluent Channel Temporary Repairsa $35,000 $0 $0 $35,000
PRN-01051 HVAC Replacement for T&D Building at Plant No. 1 $630,000 $0 $0 $630,000
PRN-01011 Primary Clarifier Manual Slide Gate Replacement at Plant No. 1 $65,000 $0 $0 $65,000
PRN-01012 Primary Clarifier Effluent Gate PLC Panel Replacement at Plant 1 $0 $473,000 $0 $473,000
PRN-01022 Replace Main Sewage Pump No. 4 with Spare at Plant No. 1 $150,000 $0 $0 $150,000
PRN-01014 Spare Parts Purchase for Sunflower Pump #1 at Plant 1 $305,500 $0 $0 $305,500
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PRN ALT. PROJECT NO. PROJECT TITLE FY 2025–
2026
FY 2026–
2027
FY 2027–
2028
3-YEAR
TOTAL COST
PRN-01057 West Primary Effluent Pipe Joint Repair at Plant 1 $600,000 $0 $0 $600,000
PRN-001002 FR1-0026 Sunflower Pump Station Effluent Channel Repair $743,927 $0 $0 $743,927
PLANT 1 SUBTOTALS $6,556,356 $3,168,381 $967,929 $10,692,666
PLANT 2
PRN-00633/PRN-00849 FR2-0023 Activated Sludge Clarifier Entry Improvements at Plant No. 2 $145,318 $0 $0 $145,318
PRN-00770 MP2-0010 PEPS Pumps #1, #2, and #3 Overhaul at Plant No. 2 $220,000 $190,000 $0 $410,000
PRN-00997 MP2-023 Primary Clarifier N Drive Assessment and Replacement $285,000 $0 $0 $285,000
PRN-00742 FR2-0033 Digesters O-T Bridge Repair at Plant No. 2 $255,961 $0 $0 $255,961
PRN-00867 FR2-0032 Digester K Dome Repair at Plant No. 2 $865,449 $0 $0 $865,449
PRN-00902 FR2-0031 Activated Sludge System Scum Rerouting at Plant No. 2 $2,025 $397,975 $0 $400,000
PRN-00901 P2 EPSA VFD Control Wiring $55,000 $0 $0 $55,000
PRN-00923 MP2-018 Spare Main Sewage Pump Repair for Pump No. 1 at Plant No. 2 $999,780 $0 $0 $999,780
PRN-00985 Centrifuge Dewatering Lubrication Pump Replacement at Plant 2 $212,000 $0 $0 $212,000
PRN-01046 Trickling Filter Clarifier B Repair at Plant No. 2 $200,000 $0 $0 $200,000
PRN-01018 Headworks Area Cable Replacements at Plant 2 $225,000 $225,000 $0 $450,000
PRN-01017 DAFT D Coating Repair at Plant No. 2 $129,000 $0 $0 $129,000
PRN-01043 Headworks Generator #1 Radiator Replacement at Plant 2 $180,000 $0 $0 $180,000
PRN-01035 Power Building D Automatic Transfer Switch Replacement at Plant 2 $150,000 $0 $0 $150,000
Task Order DAFT A Coating Repair at Plant No. 2 $129,000 $0 $0 $129,000
PRN-01020 B- & C-Side Primary Clarifier Drive Replacements at Plant No. 2 $0 $2,100,000 $0 $2,100,000
PRN-01027 Distribution Center H 12kV Switchgear Relay Replacement at Plant 2 $200,000 $200,000 $0 $400,000
PRN-01047 Procurement of Two Spare Return Secondary Sludge Pumps at Plant No. 2 $710,000 $0 $0 $710,000
PRN-01056 EPSA Generator #3 Radiator Replacement at Plant 2 $100,000 $100,000 $0 $200,000
PRN-01055 Dewatering Facility Biofilter Media Replacement at Plant No. 2 $300,000 $300,000 $0 $600,000
PLANT 2 SUBTOTALS $4,653,533 $3,512,975 $0 $8,166,508
JOINT
PRN-00630 FRJ-0003 Interplant Gas Line Blow Off Vault Repairs $1,026,627 $47,374 $0 $1,074,001
PRN-00977 Joint CenGen Engine Emission Compliance Catalyst Housing Cracks $1,150,000 $1,150,000 $0 $2,300,000
PRN-00965 Joint CenGen Engine Ignition System Obsolescence Replacement $295,707 $400,000 $0 $695,707
JOINT SUBTOTALS $2,472,334 $1,597,374 $0 $4,069,708
a Remaining budget from last FY 2024–2025
2025 Asset Management Plan
Appendix A:
Plant No. 1 Process Areas Map
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MWDOCAdministration
OCWDAdministration
WarehouseStorage Bldgs
PurchasingB1
B2
Bldg 5
B7
B3
B4
BldgABldgB
Bldg 6
B8
FleetServices
Laboratory
HR Administration
Steve AndersonLift Station
Primary
Clarifiers
6 – 15
16 – 31
ControlCenter
Contracts &EngineeringTrailers
F E
EngineeringTrailers
A B
Secondary
Clarifiers
Activated SludgeAeration Basins
Activated SludgeAeration Basins
PrimaryScrubbers
405-SFwy
SecondaryClarifiers
27
29
31
3334
32
12KVServiceCenter
Solids Storage/
Truck Loading
Ellis Avenue
Wa
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Garfield Avenue
San
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TricklingFilters21
SecondaryClarifiers21
D16
1 – 10
1 – 26
11 – 16
D15
D12
D14
D13
D11
D8
D10
D9
D7
D6
D5
Digesters
MainEntrance
FuentesGate
Gate 5
Gate 6
Main Gate
GarfieldGate
Fuentes Vehicle/Employee Gate PedestrianGate
Euclid S
t
GWRSScreeningsFacility
Central PowerGeneration
DAFTs
Primary
Clarifiers
3
1 & 2
4
5
Barscreens
Grit Chamber
BleachStation
WastehaulerDumpStation
HeadworksPreliminaryTreatment Scrubbers
Metering& Diversion
Natural GasFuel Station
Eas
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North Perimeter Road
Streed Park
w
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Proce
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Hu
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CM Tr
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South Perimeter Road
DA
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4 5 6
ConstructionGate
OCWD-OC SanAccess Gate
PacificStBandilierCirMt LangleyStAmistadSt
Thrush Av
Falcon Av
Egret Av
HAZMATStorage
Eas
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Thickening &DewateringFacility
BlowerBldg 1
Blower Bldg 2
SCESubstation
PROCESS AREAS – Reclamation Plant No. 1
H:\dept\asd\250\Common\EIM\GIS\Projects\Map Library\Process Areas\Process Areas\ProcessAreas.aprx
WSSPS-1
OCWD
City WaterPumpStation
ChillerBldg
CompressedNG Station
PB-3A
PB-5PB-8
PB-7
PB-4
PB-2
PB-6
PWPS
PB-9
12 KVDistributionCenterOCWDGAPPS
EffluentJunctionBox
Orange CountyWater District(OCWD)
Revised: 5/21/24
BatteryStorage
WSSPS-2
PB-1
Future (P1-105)Headworks processesand odor facilities beingreplaced, new PB-3
Process Areas
10 Preliminary Treatment
11 Primary Treatment
12 Secondary Treatment
14 Effluent Disposal
15 Solids Handling
16 Central Generation
17 Utility Units
18 Electrical Distribution
19 Misc Structures & Grounds
OCWD Structures
OCWD Campus
OC San Boundary
0 260 520130390 Feet
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2025 Asset Management Plan
Appendix B:
Plant No. 1 Process Diagram
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Unit Process Schematic
Reclamation Plant No. 1rev. 10/01/25
Primary Influent
Plant Influent
LEGEND
Primary Effluent
Secondary Effluent
Alternate Routing
Plant Discharge
Solids
Chemical Addition
Foul Air
Digester Gas
from OCWD
NOTE: Thicker lines denote main flow direction.
Metering &Diversion (M&D)Structure
SunflowerPumpStation
SteveAndersonLift Station
WastehaulerStation
Sc
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Sl
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Scum
Sc
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Sl
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TF Sludge
Dr
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Sl
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Centrate
Interplant High Pressure Digester Gas Line
(overflow only)
Underflows
Aerated GritChambers1,2,3,4,5
SplitterBox
HeadworksNo. 2Pumps (5)
SludgeDigesters7–16
Waste-ActivatedSludge (WAS)Pumps (6)
WASPumps (4)
DissolvedAir FlotationThickners(DAFTS) (6)
Polymer
Polymer
Ferric Chloride(as required)
6 InfluentTrunklines
Influent
Hot Water
Hot Water(to Heat Exchanger)Cold Water
Scrubber 9 Scrubber 10(Biotower)
Thickening andDewatering Scrubbers
1, 2, 3
Boiler 2 (Hot Water Boiler)
HydrogenPeroxide
HydrogenPeroxide
HydrogenPeroxide
Screeningsto Landfill Grit toLandfill
to Plant No. 2CenGen
to Cooling/HeatingAdmin. Bldg, Lab,Control Center
3
1
Central PowerGeneration System(3 engines, 3 boilers)
DewateringCentrifuges (3)
BarScreens1,2,5,6
TruckloadingHopper (1)
Pumps (4)
GasCompressorBldg
GasFlares(3)
HoldingDigesters No. 5& 6
78-InchInterplantTrunkline toPlant No. 2
InterplantTrunkline toPlant No. 2
Cake TransferStation (3 pumps)
Scrubbers1,2,3,4
SEJunctionBox 2
SEJunctionBox 5
SEJunctionBox 6
SEJunctionBox 7
SEJunctionBox 4
SEJunctionBox 3
TFSEJunctionBox 1
(2) 108-inch lines
Scum
(2) 108-inch lines
Sump Waste (SW)
Lime Waste (2 lines)
GWRS Water (emergency flow)
GW
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66-inch line 66-inch line
84-inch line 84-inch line
GAPBackwash
GA
P
B
a
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GWRSWastestreams(42"ROC)(24"Brine)
to Plant No. 2interplant line
GW
R
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(
B
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W
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Backwash (BWW)
EffluentJunctionBox (EJB)OCWD-ownedPump Stationfor GAP Water
OCWD-ownedGWR SystemScreenings Facility
66-inch
to SantaAna River
InterplantTrunkline toPlant No. 2Outfall
120-inch
84-inch
to OCSDWSSPS
to OCSD 78-inchInterplant Trunklineto Plant No. 2 Influent
to OCSDPEDB2
(effluent
108-inch)
to OCSDPrimary Clarifiers6-31
OCWD-ownedGWR SystemFacilities
Plant 1 WaterPump Station
JunctionBox A
TFSEJunctionBox 2
Facility Use
PrimaryEffluentDistributionBox (PEDB2)
RedwoodWeir(PEDB1)
InterplantLine
Polymer
Trickling FilterSecondaryClarifiers (2)
PrimaryEffluentJunctionBox (PEJB)
TFEBox
SEJB
Bleach
Bleach
Bleach
Bleach
Bleach
Bleach
Scrubbers5–8
TricklingFilters (2)
(recirculation line)
Trickling FilterInfluent Pumps (3)
TFSEJunctionBox 3
TFSEJunctionBox 5
Float
Thickened Waste-Activated Sludge (TWAS)
Trickling FilterSludge Pumps(2)
SE Junction Box 1
valve
WasteSide StreamPump Station(WSSPS)(3 pumps)
Primary EffluentPump Station(PEPS) (3)
East BasinDistributionStructure
Ferric Chloride &Hydrogen Peroxide(separate lines to each box)
DilutionWater
DilutionWater
DilutionWater
Polymer
Caustic
Caustic
Bleach
Sulfuric Acid Caustic SodaBleach
Bleach
FerricChloride
Return-ActivatedSludge (RAS)Pumps (12)
RASPumps(5)
AerationBasins1-10
AerationBasins 11-16
(weiroverflow)
SecondaryClarifiers1-26PrimaryClarifiers6–31
TFSEJunctionBox 4
CarbonScrubbers (2)
Trickling Filters
Aeration Basins
(AS2)ThickeningCentrifuges (3)
Dewatered Cake
Centrifuge Thickened Sludge
Ce
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Scum
Sludge BlendTanks (3)Polymer
Sl
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SecondaryClarifiers27-34
CentratePumpsStation (3)
Storage Silos 1,2,3,4
JunctionBox C
RecycleBiosolids
2
GWRSWastestreams(42"ROC)(24"Brine)
PrimaryClarifiers1–5
JunctionBox B
(not in use)(not in use)
(not in use)
(peroxide not in use)
TFSEJB-B
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2025 Asset Management Plan
Appendix C:
Plant No. 2 Process Areas Map
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Warehouse
PreliminaryTreatment
PrimaryClarifiers
Activ
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Aerat
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B
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NorthScrubbers
Secon
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C
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Final EffluentSamplingStation
SolidsStorage/Truck Loading
Pacifi
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TricklingFilters
A
Trickling Filter
Clarifiers
A – H
Main
Gate
BushardGate
Central PowerGeneration
Barscreens
PROCESS AREAS – Reclamation Plant No. 2
Wes
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Engineering/ConstructionMgmt Trailers
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A – L
SurgeTower 1
SurgeTower 2
Digesters
PrimaryClarifiers
OxygenFacility
Ocean OutfallBooster Station
HeadworksScrubbersHeadworks
Grit Basins
DAFTs
SouthScrubbers
PrimaryClarifiers
B
C
F
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D
A B
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P Q
N O
Solids ContactReaerationReactors
M
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Hunti
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Bush
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12KVServiceCenter
Bro
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Baybree
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BanningGate SCESubstation
C F
DistributionCenterJ
DistributionCenterH
DistributionCenter D City WaterPumpStation
Dis
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EPSAStandbyPower
Biofilters
PBC
PBB
PBA
EPSAPS
BleachStation
SodiumBisulfiteFacility
PBA B
PWPSDistributionCenterA
Headworks
PBD
EPSAElectrical
Boiler
Flares
GasComprBldg
Sludge BlendingFacility
H:\dept\asd\250\Common\EIM\GIS\Projects\Map Library\Process Areas\Process Areas\ProcessAreas.aprx
CentrifugeBuilding
DistributionCenterB
DistributionCenterK
StandbyPower
TrunklineScrubbers
Future (J-117B)new PWPS, Strainers,LoFlo Pump Station,and Electrical Facilities
Future (P2-98A)Primary Clarifiers D-G,2 Sludge Pump Stations,new Scrubber Complex,and DC-F
GWRSSEFETanks
Future (P2-98A)Primary Clarifiers D-G,2 Sludge Pump Stations,new Scrubber Complex,and DC-F
1
Process Areas
20 Preliminary Treatment
21 Primary Treatment
22 Secondary Treatment
23 Oxygen Generation Facility
24 Effluent Disposal
25 Solids Handling
26 Central Generation
27 Utility Units
28 Electrical Distribution
29 Misc Structures & Grounds
OCWD Structures
Structures in Construction
OC San Boundary
Revised: 5/21/24
0 125 250 375 500 Feet
Future (P2-127)WarehouseStation andFleet Storage
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2025 Asset Management Plan
Appendix D:
Plant No. 2 Process Diagram
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Wetwell
JunctionBox A(JBA)
JunctionBox 8(JB8)
Final SamplerBldg.
Sl
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DAFT D (underflow)
& AS Plant Process Drainage
Float
Thickened Waste-Activated Sludge (TWAS)
Dewatering
ScrubbersBiofilter Scrubbers G(Biotower)
Ocean OutfallBooster Station(OOBS) (5 pumps)
SodiumBisulfite
SodiumBisulfite
*AerationBasins (8)
*SecondaryClarifiersA–L
12
0
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Emergency Overflow
66
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FacilityUse
Primary EffluentPump Station(PEPS) (4)
WasteStreamPumpStation
HoppersA, B andTruckloading
BiosolidsRecycle
Bleach
Bleach
Return-ActivatedSludge (RAS)Pumps (6)
Dissolved Air FlotationThickners (DAFTs)A–D
Waste-ActivatedSludge (WAS)Pumps (4)
CakeTransfer (5 pumps)
DilutionWater
DilutionWater
Polymer
Polymer
4 InfluentTrunklines
DiversionStructure
Ce
n
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a
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SurgeTowerNo. 2
SurgeTowerNo. 1
Plant WaterPump Station
Santa Ana RiverOverflow (SARO)(Serial Port 003)
120-inchOutfall(Serial Port 001)
Emergency78-inchOutfall(Serial Port 002)
Centrifuge (5)
CarbonScrubber
Sludge BlendingFacility
Central PowerGeneration System(5 engines, 5 boilers,1 steam turbine)
Junction
Box 4
TrunklineOdor Control(3 Biotowers)
*PrimaryClarifiersD–G
PrimaryClarifiersH–L
PrimaryClarifiersM–Q
Bleach
GasCompressorBldg.
GasFlares (3)
Interplant High Pressure
Digester Gas Line fromPlant No. 1
EffluentPumpStationAnnex(EPSA)(3 pumps)
Wetwell
Grit Handling& Loading (4)Rag Handling& Loading (4)
HeadworksD Pumps(7)
BarScreens(6)
HydrogenPeroxide
FerricChloride ASegment(F,G,H,N,O,T)
SludgeDigesters
BSegment(P,Q,R,S)
CSegment(C,D,E,L,M)HoldingDigesters(I,J,K)
Ho
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W
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(t
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ChemicalScrubber &Carbon Scrubbers(A-C)
Sl
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Sc
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D
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t
SecondarySettlingClarifiers(A-F)
Solids ContactRe-aerationBasins (A-D)
Bleach
TricklingFilters (A,B,C)
Trickling FilterInfluent Pumps(6)
Return SecondarySludge (RSS)Pumps (12)
Waste SecondarySludge (WSS)Pumps (3)
Ferric Chloride& Bleach(separate lines to each box)
DistributionSystem
SplitterBox
MeteringStructure
Polymer
DilutionWater
A
B
C
SouthScrubberComplex U–Z
Headworks Odor Control(8 Chemical Scrubbers& 13 Biotowers)
North ScrubberComplex M–T(Q Biotower)
Primary EffluentDistribution Structure (PEDS)
CausticBleach CausticBleach
Caustic
Bleach
CarbonScrubbers(3)
High Purity Oxygen
A
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A
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TruckloadingOdor Scrubber
A
C
B
Gas Compressor Cooling Water
Overview Weir Box
Diversion Structure
OCWD EQ Tank and Pumps
To GWRS through the existing 66-inch Interplant Line
Primary Influent
Plant Influent
LEGEND
Primary Effluent
Secondary Effluent
Alternate Routing
Plant Discharge
Solids
Chemical Addition
Foul Air
Digester Gas
Grit and Screenings
NOTE: Thicker lines denote main flow direction.
GWRS
1 Non-Reclaimable3 Reclaimable 3 Non-Reclaimable3 Reclaimable 3 Non-Reclaimable
4 Reclaimable 3 Non-Reclaimable3 Reclaimable
VortexGrit Basins(6)
PrimaryMetering
78-interplantline containingSARI, P1recycle flow,and GWRSwastestreams
A
B
C
(Reclaimable)
(Non-Reclaimable)
Plant No.1 EJB)
Trunklines (fromInterplant
To GWRS intake at Plant No. 1
Unit Process Schematic — OC San Reclamation Plant No. 2
(not in use)
Unit Process Schematic
rev. 10/01/25
Reclamation Plant No. 2
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2025 Asset Management Plan
Appendix E:
Asset Management KPI Supplemental
Information
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Appendix E
Program Monitoring KPI Data
Plant No. 1 Maintenance Activity Data
Plant No. 1 Maintenance Materials and Services Cost
E-1
Plant No. 1 Labor Hours
Plant 1 Maintenance Activity Code
E-2
Plant No. 2 Maintenance Activity Data
Plant No. 2 Maintenance Materials and Services Cost
E-3
Plant No. 2 Labor Hours
Plant 2 Maintenance Activity Code
E-4
Pump Station Maintenance Activity Data
E-5
Pump Station Maintenance Materials and Services Cost at Pump Stations
Pump Station Labor Hours
E-6
Pump Station Maintenance Activity Code
E-7
Mechanical Emergency Work Hours
Electrical Emergency Work Hours
E-8
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Orange County Sanitation District
Engineering Planning Division
18480 Bandilier Circle,
Fountain Valley, California 92708-7011
714.962.2411 | www.ocsan.gov
10/2025
OPERATIONS COMMITTEE
Agenda Report
Headquarters
18480 Bandilier Circle
Fountain Valley, CA 92708
(714) 593-7433
File #:2025-4540 Agenda Date:12/3/2025 Agenda Item No:4.
FROM:Robert Thompson, General Manager
Originator: Riaz Moinuddin, Director of Operations & Maintenance
SUBJECT:
SONAR INSPECTIONS &PIPELINE CLEANINGS OF INVERTED SIPHONS AND LARGE
DIAMETER PIPELINES, SPECIFICATION NO. S-2025-695BD
GENERAL MANAGER'S RECOMMENDATION
RECOMMENDATION: Recommend to the Board of Directors to:
A. Approve a General Services Contract to Performance Pipeline Technologies, Inc. (PPT) dba
Sanitation Systems for Sonar Inspections & Pipeline Cleanings of Inverted Siphons and Large
Diameter Pipelines, Specification No. S-2025-695BD, for a total amount not to exceed
$1,750,000 for the period of January 1, 2026, through December 31, 2026; with four (4)
optional one-year renewal options; and
B. Approve an annual contingency of $175,000 (10%).
BACKGROUND
Orange County Sanitation District (OC San)maintains more than 350 miles of gravity sewer pipes in
its service area which are cleaned on a scheduled basis consistent with OC San’s Sewer System
Management Plan (SSMP).Line segments range in size from 8 inches to 120 inches.Depending on
the pipe size and historical issues,cleaning frequencies have been developed and range from every
4 weeks to once every 5 years.
For smaller diameter pipes ranging from 8 inches to 18 inches,cleaning is conducted primarily
through hydraulic flushing and vacuuming using a combination sewer cleaning vehicle.For medium
diameter pipes ranging from 21 inches to 42 inches,pipes are cleaned mechanically using a cable
tethered tire to act as a moving hydraulic scouring plug.Pipes greater than 42 inches are generally
designed to be “self-cleaning”by creating internal flow velocities that scour potential sediment and
are not regularly cleaned by OC San and are typically assumed to be self-cleaning by design of
proper scouring velocity.
The purpose of this General Services Contract is to perform sonar inspections and pipeline cleanings
of inverted siphons and large diameter pipelines within OC San’s wastewater collection system
where self-cleaning flows are not occurring.The contract provides for both pre and post-cleaning
sonar inspections,pipeline debris removal and disposal,and data reporting in high-resolution sonar
imagery formats.These activities enable OC San to identify structural defects,quantify sediment
Orange County Sanitation District Printed on 11/25/2025Page 1 of 4
powered by Legistar™
File #:2025-4540 Agenda Date:12/3/2025 Agenda Item No:4.
accumulation, and optimize cleaning frequency for critical assets.
RELEVANT STANDARDS
·Protect OC San assets
·24/7/365 treatment plant reliability
·Maintain a proactive asset management program
PROBLEM
Sonar assessments conducted in recent years have identified increased debris accumulation and
sediment buildup in several major large diameter pipes,trunk sewers and inverted siphons.These
conditions can reduce hydraulic capacity,cause operational inefficiencies,and elevate the risk of
sanitary sewer overflows (SSOs).Existing internal cleaning resources are not sufficient to perform
the large-diameter inspections required to maintain system performance and regulatory compliance.
PROPOSED SOLUTION
Establish a General Services Contract to provide specialized large-diameter and inverted siphon
cleaning and sonar inspection services on both an as-needed and scheduled basis.This contract will
enable OC San to proactively identify problem areas and maintain optimal pipeline capacity.
TIMING CONCERNS
N/A
RAMIFICATIONS OF NOT TAKING ACTION
Failure to perform these inspections and cleanings could result in debris accumulation,reduced flow
capacity,and potential SSOs.These issues could increase emergency maintenance costs,negatively
affect treatment performance, and potentially lead to regulatory violations.
PRIOR COMMITTEE/BOARD ACTIONS
N/A
ADDITIONAL INFORMATION
A Request for Proposal (RFP)was issued on September 4,2025,and proposals were received on
October 6, 2025.
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File #:2025-4540 Agenda Date:12/3/2025 Agenda Item No:4.
Proposals were evaluated based on the following criteria:
CRITERION WEIGHT
Qualifications of the Firm 25%
Staffing & Project Organization 25%
Work Plan 30%
Cost 20%
The evaluation team first reviewed and scored the proposals based on the criteria listed above,
excluding the cost.
Rank Proposer Criterion 1
(Max 25%)
Criterion 2
(Max 25%)
Criterion 3
(Max 30%)
Subtotal Score
(Max 80%)
1 Performance Pipeline
Technologies, Inc. dba
Sanitation Systems
21%20%25%66%
2 Pipe and Plant
Solutions, Inc.
19%18%20%57%
Both proposals were accompanied by a sealed cost proposal which were opened after scores for the
first three (3) criteria were submitted.
Rank Proposer Subtotal Score
without cost
(Max 80%)
Cost (Max
20%)
Total Weighted
Score (Max 100%)
1 Performance Pipeline
Technologies, Inc. dba
Sanitation Systems
66%20%86%
2 Pipe and Plant Solutions, Inc.57%0%57%
The cost proposals received are based on hourly rates for different sizes of pipe and linear foot
length along with unit costs for gallons of material dewatered,as well as equipment mobilization and
demobilization costs.Cost evaluation was based on sample work scenarios for cleaning and sonar
activities which were listed in the Evaluation Procedures of the RFP. The results are below:
Rank Proposer TOTAL COST OF
SAMPLE WORK ORDER
SCENARIOS
1 Performance Pipeline Technologies dba Sanitation
Systems
$422,400
2 Pipe and Plant Solutions, Inc.$270,450,000
Based on these results,staff recommend approving a General Services Contract to Performance
Pipeline Technologies, Inc. dba Sanitation Systems.
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File #:2025-4540 Agenda Date:12/3/2025 Agenda Item No:4.
CEQA
N/A
FINANCIAL CONSIDERATIONS
This request complies with the authority levels of OC San’s Purchasing Ordinance.The budgeted
item is located under the Repairs and Maintenance line item in the Operations and Maintenance
Department’s Budget Update for Fiscal Year 2025-2026,and the available funding is sufficient for this
action.
Date of Approval Contract Amount Contingency
12/17/2025 $ 1,750,000 $175,000 (10%)
ATTACHMENT
The following attachment(s)may be viewed on-line at the OC San website (www.ocsan.gov)with the complete agenda
package:
·General Services Contract
·Presentation
Orange County Sanitation District Printed on 11/25/2025Page 4 of 4
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General Services Contract 1 of 10 Specification No. S-2025-695BD
Revision 121924
GENERAL SERVICES CONTRACT
Sonar Inspections & Pipeline Cleanings of Inverted Siphons & Large Diameter Pipelines
Specification No. S-2025-695BD
This GENERAL SERVICES CONTRACT (hereinafter referred to as “Contract”), is made and entered
into as of the date fully executed below, by and between Orange County Sanitation District
(hereinafter referred to as “OC San”) and Performance Pipeline Technologies, Inc., dba Sanitation
Systems (hereinafter referred to as “Contractor”) and collectively referred to herein as the “Parties.”
R E C I T A L S
WHEREAS, OC San desires to retain the services of Contractor for Sonar Inspections & Pipeline
Cleanings of Inverted Siphons & Large Diameter Pipelines (“Services”) as described in Exhibit “A” –
Scope of Work attached hereto and incorporated herein by this reference; and
WHEREAS, Contractor is qualified to perform the Services by virtue of experience, training,
education, and expertise; and
WHEREAS, OC San desires to engage Contractor to provide the Services; and
WHEREAS, OC San selected Contractor to provide the Services in accordance with OC San’s
current Purchasing Ordinance; and
WHEREAS, on December 17, 2025, OC San’s Board of Directors, by minute order, authorized
execution of this Contract.
NOW, THEREFORE, in consideration of the above recitals and the mutual promises and benefits
specified below, the Parties agree as follows:
1. General.
1.1 This Contract and all exhibits hereto are made by OC San and Contractor.
1.2 The following exhibits, in order of precedence, are incorporated by reference and made
part of this Contract.
Exhibit “A” – Scope of Work
Exhibit “B” – Proposal
Exhibit “C” – Determined Insurance Requirement Form
Exhibit “D” – Contractor Safety Standards
Exhibit “E” – Human Resources Policies
Exhibit “F” – Not Used
Exhibit “G” – Not Used
1.3 In the event of any conflict or inconsistency between the provisions of this Contract and
any of the provisions of the exhibits hereto, the provisions in the Contract shall control
and thereafter the provisions in the document highest in precedence shall be controlling.
1.4 Except as expressly provided otherwise, OC San accepts no liability for any expenses,
losses, or actions incurred or undertaken by Contractor as a result of work performed in
anticipation of acquisition of the Services by OC San.
General Services Contract 2 of 10 Specification No. S-2025-695BD
Revision 121924
1.5 Work Hours: Shall be as specified in Exhibit “A” – Scope of Work.
1.6 Days: Shall mean calendar days, unless otherwise noted.
1.7 OC San holidays (non-working days) are as follows: New Year’s Day, Martin Luther King,
Jr. Day, Presidents’ Day, Memorial Day, Independence Day, Labor Day, Veterans Day,
Thanksgiving Day, Day after Thanksgiving, Christmas Eve, and Christmas Day.
1.8 Work: Shall mean all work, labor, and materials necessary to provide the Services.
1.9 The provisions of this Contract may be amended or waived only by an amendment
executed by authorized representatives of both Parties.
1.10 The various headings in this Contract are inserted for convenience only and shall not
affect the meaning or interpretation of this Contract or any paragraph or provision hereof.
2. Scope of Work.
2.1 Contractor shall perform the Services identified in Exhibit “A” – Scope of Work in
accordance with generally accepted industry and professional standards.
2.2 Modifications to Scope of Work. OC San shall have the right to modify the Scope of Work
at any time. All modifications must be made by an amendment signed by both Parties.
2.3 Familiarity with Work. By executing this Contract, Contractor warrants that: (a) it has
investigated the work to be performed; and (b) it understands the facilities, difficulties,
and restrictions of the work under this Contract. Should Contractor discover any latent or
unknown condition materially differing from those inherent in the work or as represented
by OC San, it shall immediately inform OC San of this and shall not proceed, except at
Contractor’s risk, until written instructions are received from OC San.
2.4 Performance. Time is of the essence in the performance of the provisions hereof.
3. Contract Term.
3.1 The Services shall be completed within one (1) year from the effective date of the Notice
to Proceed.
3.2 Renewals. At its sole discretion, OC San may exercise the option to renew this Contract
for up to four (4) one-year periods. This Contract may be renewed by an OC San
Purchase Order. OC San shall have no obligation to renew the Contract nor to give a
reason if it elects not to renew it.
3.3 Extensions. The term of this Contract may be extended only by an amendment signed
by both Parties.
4. Compensation.
4.1 As compensation for the Services provided under this Contract, OC San shall pay
Contractor a total amount not to exceed One Million Seven Hundred Fifty Thousand
Dollars ($1,750,000.00).
4.2 Contractor shall provide OC San with all required premiums and/or overtime work at no
charge beyond the amount specified above.
General Services Contract 3 of 10 Specification No. S-2025-695BD
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5. Payments and Invoicing.
5.1 OC San shall pay itemized invoices for work completed in accordance with Exhibit “A” –
Scope of Work thirty (30) days from receipt of the invoice and after approval by the
designated OC San representative or designee. OC San shall be the determining party,
in its sole discretion, as to whether the Services have been satisfactorily completed.
5.2 Contractor shall submit its invoices to OC San Accounts Payable by electronic mail
(email) to APStaff@OCSan.gov. In the subject line include “INVOICE” and the Purchase
Order Number.
6. California Department of Industrial Relations Registration and Record of Wages.
6.1 To the extent Contractor’s employees and/or its subcontractors perform work related to
this Contract, for which Prevailing Wage Determinations have been issued by the
California Department of Industrial Relations (DIR) as more specifically defined under
Labor Code section 1720 et seq., prevailing wages are required to be paid for applicable
work under this Contract. It is the Contractor’s responsibility to interpret and implement
any prevailing wage requirements and Contractor agrees to pay any penalty or civil
damages resulting from a violation of the prevailing wage laws.
6.2 Contractor and its subcontractors shall comply with the registration requirements of Labor
Code section 1725.5. Pursuant to Labor Code section 1771.4(a)(1), the work is subject
to compliance monitoring and enforcement by the DIR.
6.3 Pursuant to Labor Code section 1773.2, a copy of the prevailing rate of per diem wages
is available upon request at OC San’s principal office. The prevailing rate of per diem
wages may also be found at the DIR website for prevailing wage determinations at
http://www.dir.ca.gov/DLSR/PWD.
6.4 Contractor and its subcontractors shall comply with the job site notices posting
requirements established by the Labor Commissioner per Title 8, California Code of
Regulations section 16461(e). Pursuant to Labor Code sections 1773.2 and 1771.4(a)(2),
Contractor shall post a copy of the prevailing rate of per diem wages at the job site.
6.5 Contractor and its subcontractors shall maintain accurate payroll records and shall
comply with all the provisions of Labor Code section 1776. Contractor and its
subcontractors shall submit payroll records to the Labor Commissioner pursuant to Labor
Code section 1771.4(a)(3). Pursuant to Labor Code section 1776, Contractor and its
subcontractors shall furnish a copy of all certified payroll records to OC San and/or the
general public upon request, provided the public request is made through OC San, the
Division of Apprenticeship Standards, or the Division of Labor Standards Enforcement of
the DIR. Pursuant to Labor Code section 1776(h), penalties for non-compliance with a
request for payroll records may be deducted from progress payments.
6.5.1 As a condition to receiving payments, Contractor agrees to present to OC San,
along with any request for payment, all applicable and necessary certified payrolls
and other required documents for the period covering such payment request.
Pursuant to Title 8, California Code of Regulations section 16463, OC San shall
withhold any portion of a payment, up to and including the entire payment amount,
until certified payroll forms and any other required documents are properly
submitted. In the event certified payroll forms do not comply with the requirements
of Labor Code section 1776, OC San may continue to withhold sufficient funds to
General Services Contract 4 of 10 Specification No. S-2025-695BD
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cover estimated wages and penalties under the Contract.
6.6 Contractor and its subcontractors shall comply with Labor Code section 1774 and section
1775. Pursuant to Labor Code section 1775, Contractor and any of its subcontractors
shall forfeit to OC San a penalty of not more than two hundred dollars ($200) for each
calendar day, or portion thereof, for each worker paid less than the prevailing rates as
determined by the DIR for the work or craft in which the worker is employed for any work.
6.6.1 In addition to the penalty and pursuant to Labor Code section 1775, the difference
between the prevailing wage rates and the amount paid to each worker for each
calendar day or portion thereof for which each worker was paid less than the
prevailing wage rate shall be paid to each worker by Contractor or its
subcontractor.
6.7 Contractor and its subcontractors shall comply with Labor Code sections 1810 through
1815. Contractor and its subcontractors shall restrict working hours to eight (8) hours per
day and forty (40) hours per week, except that work performed in excess of those limits
shall be permitted upon compensation for all excess hours worked at not less than one
and one-half (1.5) times the basic rate of pay, as provided in Labor Code section 1815.
Contractor shall forfeit, as a penalty to OC San, twenty-five dollars ($25) per worker per
calendar day during which such worker is required or permitted to work more than eight
(8) hours in any one calendar day and forty (40) hours in any one calendar week in
violation of Labor Code sections 1810 through 1815.
6.8 Contractor and its subcontractors shall comply with Labor Code sections 1777.5, 1777.6,
and 1777.7 concerning the employment of apprentices by Contractor or any
subcontractor.
6.9 Contractor shall include, at a minimum, a copy of the following provisions in any contract
it enters into with any subcontractor: Labor Code sections 1771, 1771.1, 1775, 1776,
1777.5, 1810, 1813, 1815, 1860, and 1861.
6.10 Pursuant to Labor Code sections 1860 and 3700, Contractor and its subcontractors will
be required to secure the payment of compensation to employees. Pursuant to Labor
Code section 1861, Contractor, by accepting this Contract, certifies that:
“I am aware of the provisions of section 3700 of the Labor Code which require
every employer to be insured against liability for workers’ compensation or to
undertake self-insurance in accordance with the provisions of that code, and
I will comply with such provisions before commencing the performance of the
work of this Contract.”
Contractor shall ensure that all its contracts with its subcontractors provide the provision
above.
7. Damage to OC San’s Property. Any of OC San’s property damaged by Contractor, any
subcontractor, or by the personnel of either will be subject to repair or replacement by
Contractor at no cost to OC San.
General Services Contract 5 of 10 Specification No. S-2025-695BD
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8. Freight (F.O.B. Destination). Contractor assumes full responsibility for all transportation,
transportation scheduling, packing, handling, insurance, and other services associated with
delivery of all products deemed necessary under this Contract.
9. Audit Rights. Contractor agrees that, during the term of this Contract and for a period of three
(3) years after its expiration or termination, OC San shall have access to and the right to
examine any directly pertinent books, documents, and records of Contractor relating to the
invoices submitted by Contractor pursuant to this Contract.
10. Contractor Safety Standards and Human Resources Policies. OC San requires Contractor
and its subcontractor(s) to follow and ensure their employees follow all Federal, State, and
local regulations as well as the Contractor Safety Standards while working at OC San locations.
If, during the course of the Contract, it is discovered that the Contractor Safety Standards do
not comply with Federal, State, or local regulations, Contractor is required to follow the most
stringent regulatory requirement at no additional cost to OC San. Contractor, its
subcontractors, and all of their employees shall adhere to the safety requirements in Exhibit
“A” – Scope of Work, Exhibit “D” – Contractor Safety Standards,” and Exhibit “E” – Human
Resources Policies.
11. Insurance. Contractor and all its subcontractors shall purchase and maintain, throughout the
term of this Contract and any periods of warranty or extensions, insurance in amounts equal
to the requirements set forth in the signed Exhibit “C” – Determined Insurance Requirement
Form. Contractor shall not commence work under this Contract until all required insurance is
obtained in a form acceptable to OC San, nor shall Contractor allow any subcontractor to
commence service pursuant to a subcontract until all insurance required of the subcontractor
has been obtained. Failure to obtain and maintain the required insurance coverage shall result
in termination of this Contract.
12. Bonds. Not Used
13. Indemnification and Hold Harmless Provision. Contractor shall assume all responsibility
for damages to property and/or injuries to persons, including accidental death, which may arise
out of or may be caused by Contractor’s Services under this Contract, or by its
subcontractor(s), or by anyone directly or indirectly employed by Contractor, and whether such
damage or injury shall accrue or be discovered before or after the termination of the Contract.
Except as to the sole active negligence of or willful misconduct of OC San, Contractor shall
indemnify, protect, defend, and hold harmless OC San, its elected and appointed officials,
officers, agents, and employees from and against any and all claims, liabilities, damages, or
expenses of any nature, including attorneys’ fees: (a) for injury to or death of any person, or
damage to property, or interference with the use of property arising out of or in connection with
Contractor’s performance under the Contract, and/or (b) on account of use of any copyrighted
or uncopyrighted material, composition, or process; or any patented or unpatented invention,
article, or appliance furnished or used under the Contract, and/or (c) on account of any goods
and Services provided under this Contract. This indemnification provision shall apply to any
acts or omissions, willful misconduct, or negligent misconduct, whether active or passive, on
the part of Contractor or anyone employed by or working under Contractor. To the maximum
extent permitted by law, Contractor’s duty to defend shall apply whether or not such claims,
allegations, lawsuits, or proceedings have merit or are meritless; or which involve claims or
allegations that any of the parties to be defended were actively, passively, or concurrently
negligent; or which otherwise assert that the parties to be defended are responsible, in whole
or in part, for any loss, damage, or injury. Contractor agrees to provide this defense
General Services Contract 6 of 10 Specification No. S-2025-695BD
Revision 121924
immediately upon written notice from OC San, and with well qualified, adequately insured, and
experienced legal counsel acceptable to OC San. This section shall survive the expiration or
early termination of the Contract.
14. Independent Contractor. The relationship between the Parties hereto is that of an
independent contractor and nothing herein shall be deemed to make Contractor an OC San
employee. During the performance of this Contract, Contractor and its officers, employees, and
agents shall act in an independent capacity and shall not act as OC San’s officers, employees,
or agents. Contractor and its officers, employees, and agents shall obtain no rights to any
benefits which accrue to OC San’s employees.
15. Subcontracting and Assignment. Contractor shall not delegate any duties nor assign any
rights under this Contract without the prior written consent of OC San. Any such attempted
delegation or assignment shall be void.
16. Disclosure. Contractor agrees not to disclose, to any third party, data or information
generated from this Contract without the prior written consent from OC San.
17. Non-Liability of OC San Officers and Employees. No officer or employee of OC San shall
be personally liable to Contractor, or any successor-in-interest, in the event of any default or
breach by OC San, or for any amount which may become due to Contractor or to its successor,
or for breach of any obligation under the terms of this Contract.
18. Third-Party Rights. Nothing in this Contract shall be construed to give any rights or benefits
to anyone other than OC San and Contractor.
19. Applicable Laws and Regulations. Contractor shall comply with all applicable Federal, State,
and local laws, rules, and regulations. Contractor also agrees to indemnify and hold OC San
harmless from any and all damages and liabilities assessed against OC San as a result of
Contractor’s noncompliance therewith. Any provision required by law to be included herein
shall be deemed included as a part of this Contract whether or not specifically included or
referenced.
20. Licenses, Permits, Ordinances, and Regulations. Contractor represents and warrants to
OC San that it has obtained all licenses, permits, qualifications, and approvals of whatever
nature that are legally required to provide the Services. Any and all fees required by Federal,
State, County, City, and/or municipal laws, codes, and/or tariffs that pertain to the work
performed under this Contract will be paid by Contractor.
21. Regulatory Requirements. Contractor shall perform all work under this Contract in strict
conformance with applicable Federal, State, and local regulatory requirements including, but
not limited to, 40 CFR 122, 123, 124, 257, 258, 260, 261, and 503, Title 22, 23, and Water
Codes Division 2.
22. Environmental Compliance. Contractor shall, at its own cost and expense, comply with all
Federal, State, and local environmental laws, regulations, and policies which apply to
Contractor, its subcontractors, and the Services, including, but not limited to, all applicable
Federal, State, and local air pollution control laws and regulations.
23. South Coast Air Quality Management District’s Requirements. It is Contractor’s
responsibility to ensure that all equipment furnished and installed be in accordance with the
General Services Contract 7 of 10 Specification No. S-2025-695BD
Revision 121924
latest rules and regulations of the South Coast Air Quality Management District (SCAQMD).
All Contract work practices, which may have associated emissions such as sandblasting, open
field spray painting, or demolition of asbestos containing components or structures shall
comply with the appropriate rules and regulations of SCAQMD.
24. California Air Resources Board Mobile Source Regulations.
Contractor and its applicable consultants, subconsultants, and subcontractors shall comply
with the following California Air Resources Board Mobile Source Regulations:
• Advanced Clean Fleet (ACF): 13 CCR 2013-2013.4; 13 CCR 2015-2015.6
• Truck & Bus Regulation (T&B): 13 CCR 2025
• Clean Truck Check (CTC): 13 CCR 2195-2199.1
• Off-Road Diesel Amendments (ORD): 13 CCR 2449-2449.2
25. Dispute Resolution.
25.1 In the event of a dispute as to the construction or interpretation of this Contract, or any
rights or obligations hereunder, the Parties shall first attempt, in good faith, to resolve the
dispute by mediation. The Parties shall mutually select a mediator to facilitate the
resolution of the dispute. If the Parties are unable to agree on a mediator, the mediation
shall be conducted in accordance with the Commercial Mediation Rules of the American
Arbitration Agreement, through the alternate dispute resolution procedures of Judicial
Arbitration through Mediation Services of Orange County (“JAMS”), or any similar
organization or entity conducting an alternate dispute resolution process.
25.2 In the event the Parties are unable to timely resolve the dispute through mediation, the
issues in dispute shall be submitted to arbitration pursuant to Code of Civil Procedure,
Part 3, Title 9, sections 1280 et seq. For such purpose, an agreed arbitrator shall be
selected, or in the absence of agreement, each party shall select an arbitrator, and those
two (2) arbitrators shall select a third. Discovery may be conducted in connection with the
arbitration proceeding pursuant to Code of Civil Procedure section 1283.05. The
arbitrator, or three (3) arbitrators acting as a board, shall take such evidence and make
such investigation as deemed appropriate and shall render a written decision on the
matter in question. The arbitrator shall decide each and every dispute in accordance with
the laws of the State of California. The arbitrator’s decision and award shall be subject to
review for errors of fact or law in the Superior Court for the County of Orange, with a right
of appeal from any judgment issued therein.
26. Liquidated Damages. Not Used
27. Remedies. In addition to other remedies available in law or equity, if Contractor fails to make
delivery of the goods and Services or repudiates its obligations under this Contract, or if OC
San rejects the goods or Services or revokes acceptance of the goods and Services, OC San
may (a) terminate the Contract; (b) recover whatever amount of the purchase price OC San
has paid, and/or (c) “cover” by purchasing, or contracting to purchase, substitute goods and
Services for those due from Contractor. In the event OC San elects to “cover” as described in
(c), OC San shall be entitled to recover from Contractor as damages the difference between
the cost of the substitute goods and Services and the Contract price, together with any
incidental or consequential damages.
28. Force Majeure. Neither party shall be liable for delays caused by accident, flood, acts of God,
fire, labor trouble, war, acts of government, or any other cause beyond its control, but the
General Services Contract 8 of 10 Specification No. S-2025-695BD
Revision 121924
affected party shall use reasonable efforts to minimize the extent of the delay. Work affected
by a force majeure condition may be rescheduled by mutual consent of the Parties.
29. Termination.
29.1 OC San reserves the right to terminate this Contract for its convenience, with or without
cause, in whole or in part, at any time, by written notice from OC San. Upon receipt of a
termination notice, Contractor shall immediately discontinue all work under this Contract
(unless the notice directs otherwise). OC San shall thereafter, within thirty (30) days, pay
Contractor for work performed (cost and fee) through the date of termination. Contractor
expressly waives any claim to receive anticipated profits to be earned during the
uncompleted portion of this Contract. Such notice of termination shall terminate this
Contract and release OC San from any further fee, cost, or claim hereunder by Contractor
other than for work performed through the date of termination.
29.2 OC San reserves the right to terminate this Contract immediately upon OC San’s
determination that Contractor is not complying with the Scope of Work requirements, if
the level of service is inadequate, or for any other default of this Contract.
29.3 OC San may also immediately terminate this Contract for default, in whole or in part, by
written notice to Contractor:
▪ if Contractor becomes insolvent or files a petition under the Bankruptcy Act; or
▪ if Contractor sells its business; or
▪ if Contractor breaches any of the terms of this Contract; or
▪ if the total amount of compensation exceeds the amount authorized under this
Contract.
29.4 All OC San’s property in the possession or control of Contractor shall be returned by
Contractor to OC San on demand or at the expiration or early termination of this Contract,
whichever occurs first.
30. Attorney’s Fees. If any action at law or in equity or if any proceeding in the form of an
Alternative Dispute Resolution (ADR) is necessary to enforce or interpret the terms of this
Contract, the prevailing party shall be entitled to reasonable attorney’s fees, costs, and
necessary disbursements in addition to any other relief to which the prevailing party may be
entitled.
31. Waiver. The waiver by either party of any breach or violation of, or default under, any provision
of this Contract shall not be deemed a continuing waiver by such party of any other provision
or of any subsequent breach or violation of this Contract or default thereunder. Any breach by
Contractor to which OC San does not object shall not operate as a waiver of OC San’s rights
to seek remedies available to it for any subsequent breach.
32. Severability. If any section, subsection, or provision of this Contract; or any agreement or
instrument contemplated hereby; or the application of such section, subsection, or provision is
held invalid, the remainder of this Contract or instrument in the application of such section,
subsection, or provision to persons or circumstances other than those to which it is held invalid,
shall not be affected thereby, unless the effect of such invalidity shall be to substantially
frustrate the expectations of the Parties.
General Services Contract 9 of 10 Specification No. S-2025-695BD
Revision 121924
33. Survival. The provisions of this Contract dealing with payment, warranty, indemnity, and forum
for enforcement shall survive expiration or early termination of this Contract.
34. Governing Law. This Contract shall be governed by and interpreted under the laws of the
State of California and the Parties submit to jurisdiction in the County of Orange in the event
any action is brought in connection with this Contract or the performance thereof.
35. Notices.
35.1 All notices under this Contract must be in writing. Written notice shall be delivered by
personal service, by email, or sent by registered or certified mail, postage prepaid, return
receipt requested, or by any other overnight delivery service which delivers to the noticed
destination and provides proof of delivery to the sender. Rejection or other refusal to
accept or the inability to deliver because of changed address for which no notice was
given as provided hereunder shall be deemed to be receipt of the notice, demand, or
request sent. All notices shall be effective when first received at the following addresses:
OC San: Jeremey Arbiso
Senior Buyer
Orange County Sanitation District
18480 Bandilier Circle
Fountain Valley, CA 92708
JArbiso@ocsan.gov
Contractor: Gene Glassburner
General Manager
Performance Pipeline Technologies, Inc., dba Sanitation Systems
5292 System Drive
Huntington Beach, CA 92649
GGlassburner@Azuria.com
35.2 Each party shall provide the other party written notice of any change in address as soon
as practicable.
36. Read and Understood. By signing this Contract, Contractor represents that it has read and
understood the terms and conditions of the Contract.
37. Authority to Execute. The persons executing this Contract on behalf of the Parties warrant
that they are duly authorized to execute this Contract and that by executing this Contract, the
Parties are formally bound.
38. Entire Agreement. This Contract constitutes the entire agreement of the Parties and
supersedes all prior written or oral communications and all contemporaneous oral agreements,
understandings, and negotiations between the Parties with respect to the subject matter
hereof.
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IN WITNESS WHEREOF, intending to be legally bound, the Parties hereto have caused this
Contract to be signed by their duly authorized representatives.
ORANGE COUNTY SANITATION DISTRICT
Dated: _________________ By:
Ryan P. Gallagher
Chair, Board of Directors
Dated: _________________ By:
Kelly A. Lore
Clerk of the Board
Dated: _________________ By:
Kevin Work
Purchasing & Contracts Manager
PERFORMANCE PIPELINE TECHNOLOGIES, INC.,
dba SANITATION SYSTEMS
Dated: _________________ By:
Print Name and Title of Officer
LDR
EXHIBIT A Specification No. S-2025-695BD
EXHIBIT A
SCOPE OF WORK
For
Sonar Inspections & Pipeline Cleanings of Inverted Siphons & Large Diameter Pipelines
EXHIBIT A Page 1 of 6 Specification S-2025-695BD
EXHIBIT A SCOPE OF WORK SONAR INSPECTIONS & PIPELINE CLEANINGS OF INVERTED SIPHONS & LARGE DIAMETER PIPELINES SPECIFICATION NO. S-2025-695BD
1. Background and PurposeThe Orange County Sanitation District (OC San) is a public agency responsible forcollecting, treating, and safely disposing of wastewater and its residuals for 2.6 millionresidents and businesses in Orange County, California. OC San operates two treatmentplants: Plant No. 1 in the City of Fountain Valley and Plant No. 2 in the City of Huntington
Beach. In addition, OC San operates and maintains about 390 miles of sewer with 4,500manholes and 15 pumping stations, all of which convey flows to the treatment plants.
OC San generally designs all its large diameter pipelines (greater than 42-inches indiameter) to be self-cleansing. However, previous sonar inspections confirmed that somegravity sewers and inverted siphons systems have significant debris accumulation and
require cleaning. The purpose of this contract is as follows:
•Clean select large diameter pipeline trunk systems
•Clean select inverted siphon pipeline systems
•Inspection of pipeline systems with sonar technology
2. General Description of the WorkThis Scope of Work (SOW) involves cleaning, decanting, solids disposal, sonarinspections, and other work as described herein:
2.1 Work Locations – See Appendix A-1 for a map of OC San’s service area. For eachcleaning and inspection task, the designated OC San representative will provide
the following task-specific information:
•Proposed Work Order
•Approximate Line Footage
•Manhole-to-Manhole Segment Identification
•Area of Work
•Atlas Maps, Drawings, and Other Relevant Asset Data
OC San shall also provide the Contractor geodatabase viewer access through its
Sewer Atlas Mobile application on ESRI ArcGIS Field Maps.
2.2 Cleaning, Decanting, and Solids Disposal – For each large diameter or inverted siphon pipeline, the Contractor shall remove and dispose of all internal debris including but not limited to roots, rags, grit, sludge, etc.
2.2.1 Cleaning – Pipelines shall be cleaned from an upstream manhole to a downstream manhole with hydraulically powered equipment, high-velocity jet cleaners with heavy floor cleaning or venturi nozzles, mechanically powered equipment, or other OC San approved method dependent on the nature of the debris to be removed.
Water will not be provided by OC San. The Contractor is responsible for obtaining the necessary fire hydrant permit(s) to access temporary
construction water, as required for cleaning. Alternatively, the Contractor may use wastewater stream for devices using water. Contractor must not damage the existing pipelines, manholes, and other existing facilities. Any metallic parts
of cleaning equipment shall not come into direct contact with pipeline or
EXHIBIT A Page 2 of 6 Specification S-2025-695BD
manhole shafts that are plastic, plastic-lined, or plastic-coated. Cleaning operations shall not surcharge laterals or cause flow or gases to enter service connections.
Cleaning shall continue until all debris and obstructions are removed and disposed of by the Contractor to the satisfaction of the designated OC San representative. If cleaning cannot be completed from one manhole, move equipment and set up on another manhole to reattempt cleaning. If successful cleaning still cannot be performed or equipment fails to traverse entire pipeline segment, it shall be assumed a major blockage exists, in which case efforts to clean shall be temporarily suspended and the designated OC San representative notified immediately. Cleaning shall be completed upon the
removal of the blockage.
2.2.2 Decanting and Solids Disposal – All liquids shall be decanted and drained back
to the sewer. All solids or semisolids resulting from the cleaning operations shall be removed from the work site and disposed of at either of the following locations:
•Digester drying beds at OC San's Treatment Plant No. 1 located inFountain Valley (See Appendix A-2 OPS-SOP-15-003 Sewer Debris
Drying Bed Use Procedure including Drying Bed Authorization Form), at nocost to the Contractor but is subject to availability. Amounts and disposaldates shall be coordinated with the designated OC San representative.Contractor shall assume solids and semisolids in excess of 10 cubic yardsdaily cannot be accepted at OC San’s digester drying beds.
•A permitted and OC San approved disposal facility, such as:o Frank K. Bowerman Landfill - 11002 Bee Canyon Access Road,Irvine, CA, 92602
o Prima Deshecha Landfill – 32250 Avenida La Pata, San JuanCapistrano, CA 92675oOlinda Alpha Landfill - 1942 Valencia Avenue, Brea, CA 92823
All materials shall be removed from the work site at the end of each workday. Under no circumstances shall the Contractor be allowed to accumulate debris, on the work site beyond a single workday, except in totally enclosed leak- and odor-proof containers and as approved by the designated OC San
representative.
If disposal at OC San is unavailable or anticipated to be unavailable at the time
of need, the Contractor may recommend and/or use an alternative disposal site(s). However, these facilities shall be reviewed and approved by the designated OC San representative to ensure that the facility is properly permitted and does not have any outstanding violations, etc. In addition, OC San’s material shall be properly profiled, approved, and authorized prior to disposal.
The Contractor shall be responsible for all handling, transportation, and landfill tipping fees, and shall directly manage the waste profiling, required sampling, and laboratory analyses to ensure continued conformance with landfill standards. Upon incurring fees at an alternate pre-approved disposal site, the Contractor may submit a receipt or invoice for those fees to the designated OC San representative for reimbursement. Reimbursement will be issued upon completion and formal acceptance of the work by the designated OC San
representative.
EXHIBIT A Page 3 of 6 Specification S-2025-695BD
2.2.3 Submittals – The Contractor shall submit a cleaning plan to the designated OC San representative for approval within 15 working days prior to the proposed mobilization date for each work order. The designated OC San representative will review and provide comments, if any, to the Contractor to be incorporated into the plan as necessary.
2.3 Sonar Inspections – Provide sonar inspections for each large diameter pipeline using high-resolution sonar units. Sonar shall be performed a total of 2 times for each large diameter pipeline as follows:
Sonar Inspections
Sonar Inspection No. Description Completion Window
2.3.1 Equipment – Sonar units may be skid, float, or robotic tractor mounted, and the best-suited configuration shall be selected for the pipeline being inspected. Sonar units shall be capable of 2 to 4 scans per foot producing high resolution color images of scans and have a distance measurement accuracy of +/- 0.9 inch under all conditions.
2.3.2 General Procedure – All sonar inspections shall be completed within the completion windows specified in this SOW. Whenever non-remote powered and controlled winches are used to pull the equipment through a pipeline, telephone, radios, or other suitable means of communication shall be set up between the 2 manholes of the section being inspected to ensure that adequate communication exists between members of the crew.
If during the sonar inspection equipment is stuck inside the sewer and cannot be retrieved, the Contractor shall not excavate the pipeline to retrieve it without
written prior approval from the designated OC San representative. The Contractor shall inform the designated OC San representative immediately and submit a retrieval plan for review and approval. It is the Contractor’s
responsibility to remove the equipment and ensure that the sewer is not damaged.
2.3.3 Submittal – The Contractor shall submit a sample sonar deliverable to the designated OC San representative for review and approval prior to the start of the first work order. Submittals can be delivered via OneDrive folder provided by OC San to the Contractor. The designated OC San representative will review and provide comments, if any, to the Contractor to be incorporated into the deliverable as necessary. This will be the required format of all deliverables for the duration of this Contract.
Sample sonar sediment and profiler reports are provided in Appendices A-3 Sonar Sediment Report and A-4 Pipe Profiler Report.
2.4 Spill Reporting and Handling – In the event of any Contractor related overflow or interruption of service, the Contractor shall immediately notify the OC San Control Center at (714) 593-7025. The Contractor shall attempt to contain, control, and
relieve the spill and isolate it from entry into any waterways including catch basins and storm drains. Once the spill has been contained, controlled, and relieved, the Contractor shall clean the area to OC San’s satisfaction. Workshops with the Contractor may be provided by OC San regarding containment methods at the Contractor’s request in writing to the designated OC San representative.
EXHIBIT A Page 4 of 6 Specification S-2025-695BD
Contractor shall be responsible for any fines levied by others, reimbursement of any OC San incurred costs, damage, cleanup, restoration of flow, and any disruption of service costs to OC San customers as of a result of the Contractor’s work. Contractor shall also notify the OC San Control Center immediately of any apparent non-Contractor related spills. 2.5 Emergency Reporting – If during the work the Contractor encounters a condition where public safety is threatened (such as, but not limited to, a pipeline hole, pipeline collapse, stoppage, blockage, and/or imminent sewer spill), the Contractor shall immediately notify the OC San Control Center at (714) 593-7025.
2.6 Manhole Sealant – Contractor shall reseal all previously sealed manhole covers with duct seal Cal Pico #CD-5, or equal, within 24 hours after work is completed.
The Contractor shall furnish the sealing material. The work area around the manhole(s) shall be swept clean of all debris. 3. Deliverables The Contractor shall provide the following deliverables for each sonar inspection:
• Sonar Sediment Report
• Sonar Profiler Report
3.1 Sonar Sediment Report – Sonar Sediment Report shall be in PDF format and include all of the following information, at a minimum:
• Inspection date
• Inspection time
• Weather at time of inspection
• Contractor name
• Operator(s) name
• Street name or location
• OC San Facility ID
• OC San Manhole Number upstream
• OC San Manhole Number downstream
• Survey direction (downstream/upstream)
• Pipeline diameter
• Pipeline material
• Length surveyed
• Average debris depth (inches)
• Maximum debris depth (inches)
• Estimated debris volume (cubic feet)
• A profile graph showing debris height (inches) at the inspection start, inspection end, and every 10 feet along the length of the pipeline in relation to the diameter of the pipeline
• Other associated data 3.2 Sonar Profiler Report – Sonar Profiler Report shall be in PDF format and include all of the following information, at a minimum:
• Cover page with inspection date, time, Contractor name, operator name, survey direction (upstream/downstream), and OC San Facility ID
• Sonar profiler high resolution color snapshots at inspection start, inspection end, and every 10 feet along the length of the pipeline. Each snapshot page shall also note the survey distance, pitch, and roll.
EXHIBIT A Page 5 of 6 Specification S-2025-695BD
Deliverables not conforming to the approved formats described above, shall be rejected and revised at no additional cost to OC San. If additional field work is required to correct the reports, it shall be done at no additional cost to OC San.
Deliverables for each work order shall be provided to the designated OC San representative within 10 working days of completed inspections. After receipt of each inspection deliverable, the designated OC San representative will review and provide comments, if any, to the Contractor to be incorporated into the deliverables as necessary. The Contractor shall address all comments and return finalized deliverables within 10 working days of receiving the comments.
4.Safety and Health Requirements
The Contractor and any subcontractors shall comply with all applicable provisions of theContractor Safety Standards (See Exhibit “D” Contractor Safety Standards), OSHA,Cal/OSHA, and local regulations, whichever is most stringent.
5.Permits and Traffic ControlWhen working in an OC San easement area, the Contractor shall restrict the worksite to
within the OC San easement. However, if the worksite cannot be maintained within OCSan’s easement, a separate encroachment permit may be required by the authority havingjurisdiction.
The Contractor shall be responsible for preparing, submitting, and acquiring all permitsrequired by Federal, State, County, and/or local authorities for all aspects of the workperformed within their jurisdiction. This includes, but is not limited to, traffic control andencroachment permits. Prior to the start of each work order, the Contractor shall providethe designated OC San representative with an estimate of all fees associated with suchpermits, including any required inspection fees and the costs of regulatory inspectors, asmandated by applicable laws, codes, and tariffs. Receipts of permit fees and related costs
shall be submitted with the corresponding invoice, which will be reimbursed provided that:
•The required permits have been obtained; and
•Traffic control setup has been completed; and
•The job has been completed and accepted by the designated OC Sanrepresentative.
All traffic control shall be implemented in accordance with the latest version of the Caltrans Manual on Uniform Traffic Control Devices (MUTCD), with additional local regulations taking precedence where applicable. The Contractor shall ensure safe and adequate
pedestrian, bicyclist, and vehicular access at all times, in accordance with Section 600 of the Greenbook. Inadequate or improper signage and delineation for traffic control may be cause for termination of the Contract.
6. AccessOC San’s easement areas are typically restricted with locked gates. Additionally, some of
OC San’s manhole cover bolts require specialized tools to be removed for access. TheContractor shall coordinate with the designated OC San representative to obtain copiesof required key(s), socket head(s), etc. from OC San such that OC San assistance is not
required for typical manhole access.
Where access to private property is required to perform the work, notice shall be given toresidents by OC San for permission to enter the property at least 72 hours prior tocommencing the work. Coordination shall be made through the designated OC Sanrepresentative and additional planning time for OC San and the Contractor may be neededwhen private property is involved. OC San’s designated representative shall be notified atleast 7 calendar days prior to the Contractor’s anticipated work involving private property.The designated OC San representative will aid with manhole access on private property.
EXHIBIT A Page 6 of 6 Specification S-2025-695BD
Additional planning time and effort shall be provided by the Contractor at no additional cost to OC San.
For work within OC San’s Plant No. 1 or Plant No. 2, coordination shall be made through the designated OC San representative who shall be notified at least 10 working days prior to Contractor’s anticipated work in the area. The Contractor shall provide the proposed date(s) and time(s) of the anticipated work in the area as well as the names of all staff requiring access to the designated OC San representative. The designated OC San representative will provide assistance with manhole access in secure plant areas.
7.Work HoursNormal hours are 7:00 am to 4:30 pm Monday through Thursday. However, some work
may require the Contractor to work schedules outside of the normal OC San businesshours during nights or weekends due to traffic conditions or permit requirements.
Regular Hourly Labor Rates (Scheduled work during Normal Service Hours): Shallbe paid hourly to a maximum of eight (8) hours per workday.
Overtime Hourly Labor Rates (Any work performed outside of Normal Service Hours[between 4:30 p.m. and 7:00 a.m.], work in excess of eight (8) hours per day, workon weekends, and work on holidays): Shall be paid in accordance with theappropriate prevailing wage multipliers.
8. Noise and Odor Management RequirementsWith permit requirements, the Contractor is required to work within the approved workhours and to provide necessary equipment to meet local noise restrictions that may be
imposed. Typical levels shall not exceed 50 decibels (dBA) measured at any residentialproperty. OC San will provide notifications to the public for night work as required.
The Contractor shall manage the work appropriately to ensure nuisance odors aremitigated within 2 hours of discovery. Mitigation measures shall ensure nuisance odorsare non-discernable at 5 feet from the manhole; an odor neutralizer may be required to beaerosolized near the area of work.
9. Contract Management and MeetingsContractor is assigned a single point of contact for this Contract. Any meetings and/orcorrespondence related to this Contract shall be scheduled during typical work hours andapproved by the designated OC San representative.
9.1 Work Coordination Meetings – The designated OC San representative will initiate
communication and coordination for each cleaning and inspection task. All communications and project execution shall be aligned with the task-specific details and any additional specifications provided by the designated OC San
representative.
10.OC San Staff Assistance
OC San equipment and labor, except for the designated OC San representative to monitorthe work, shall not be utilized at any time by the Contractor.
11/25/2025
1
Inverted Siphon & Large
Pipeline Cleaning
Presented by :
Nicholas Oswald, Maintenance Manager
Operations Committee
December 3, 2025
OC San Service Area
2
•Over 350 miles of gravity sewer
pipe
•> 42 inches pipelines designed
to be “self cleaning”
•Flow velocity has changed over
time and sediment
accumulates
•Buildup over time reduces
pipeline capacity creating
potential risks of sewer
overflows
1
2
11/25/2025
2
Inverted
Siphons
3
•Inverted Siphons continuously have fluid in them
•Visibility for inspections is limited
•Bypass and draining is costly
Sonar Inspections
4
•Sonar will identify increased debris accumulation
•Limited interruption to operational flow
•Pre and Post sonar inspection will confirm the
effectiveness of cleaning
3
4
11/25/2025
3
•An RFP was issued for the required services in September 2025
•Two qualified bidders were presented to the evaluation team, with cost excluded from the ranking process
•Performance Pipeline Technologies, Inc. ranked highest based on the
evaluation criteria
•Staff recommends awarding the service contract to Performance
Pipeline Technologies, Inc.
Request for Proposal (RFP) Summary
5
Questions?
6
5
6
OPERATIONS COMMITTEE
Agenda Report
Headquarters
18480 Bandilier Circle
Fountain Valley, CA 92708
(714) 593-7433
File #:2025-4524 Agenda Date:12/3/2025 Agenda Item No:5.
FROM:Robert Thompson, General Manager
Originator: Mike Dorman, Director of Engineering
SUBJECT:
SUPPLEMENTAL ENGINEERING SERVICES, CONTRACT NO. PSA2021-002
GENERAL MANAGER'S RECOMMENDATION
RECOMMENDATION: Recommend to the Board of Directors to:
Authorize the General Manager to transfer funds between existing Professional Services Agreements
to provide Supplemental Engineering Services,Contract No.PSA2021-002,with Jacobs Project
Management Co.and AECOM Technical Services,Inc.,to balance contract budgets through April
2027,with no increase to the total Board authorized not to exceed amount of $29,700,000 per
agreement.
BACKGROUND
To ensure that projects are completed on time and each properly controlled,the Orange County
Sanitation District (OC San)has utilized Supplemental Engineering Services (SES)to augment staff
resources.In April 2022,the Board approved SES agreements to both Jacobs Project Management
Co.(Jacobs)and AECOM Technical Services,Inc.,(AECOM)for a three-year period with two one-
year renewal options (May 1, 2022 - April 30, 2027), each for an amount not to exceed $29,700,000.
With the additional staffing plan approved by the Board in November 2025,OC San will continue to
rely on SES agreements to meet the demands of the expanding Capital Improvement Program (CIP)
workload.To ensure a smooth transition between contracts,a new Request for Proposals (RFP)for
SES services will be issued in January 2026,allowing for a nine-month overlap with the existing
agreements.The staffing levels in the upcoming RFP will reflect the Board-approved additional
staffing plan.
RELEVANT STANDARDS
·Comply with California Government Code Section 4526 to engage the best qualified firm “on
the basis of demonstrated competence and qualifications” and “negotiate fair and reasonable
fees”
·Ensure the public’s money is wisely spent.
·Sustain 1, 5, and 20-year planning horizons
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File #:2025-4524 Agenda Date:12/3/2025 Agenda Item No:5.
PROBLEM
When the SES contract started,OC San issued staffing requests and task orders to both firms.
AECOM took a few years to ramp up and provide their share of staffing,resulting in an imbalance in
spending between the two firms.Jacobs is providing a significantly larger number of SES staff than
AECOM,causing their contract funds to be expended at a faster rate.Currently,Jacobs provides 44
full-time staff,compared to 10.5 staff provided by AECOM,a utilization rate roughly four times
greater.As a result,Jacobs’budget is projected to be depleted by February 2026,approximately 15
months before the end of the current contract term on April 30, 2027.
PROPOSED SOLUTION
Authorize the General Manager to transfer funds between existing SES agreements to maintain
staffing continuity and ensure smooth completion or transition of current assignments during the
overlap between existing and future SES contracts.
TIMING CONCERNS
If the Jacobs contract runs out of funds before the new SES contracts are executed,projects may be
delayed if AECOM cannot fill these roles with their staff.This could also reduce project delivery
efficiency.
RAMIFICATIONS OF NOT TAKING ACTION
Jacobs will run out of funds before the end of the contract.
PRIOR COMMITTEE/BOARD ACTIONS
April 2022 -Approved Professional Services Agreements to provide Supplemental Engineering
Services,Contract No.PSA2021-002,for a three-year period commencing May 1,2022,through
April 30,2025,with two one-year renewal options,for an amount not to exceed $29,700,000 per
individual agreement with the following two firms:AECOM Technical Services,Inc.and Jacobs
Project Management Co.
ADDITIONAL INFORMATION
N/A
CEQA
N/A
FINANCIAL CONSIDERATIONS
This request complies with the authority levels of OC San’s Purchasing Ordinance.The budgeted
costs for the proposed Professional Services Agreements are contained within the approved CIP
project budgets, and no additional funding is necessary.
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File #:2025-4524 Agenda Date:12/3/2025 Agenda Item No:5.
ATTACHMENT
The following attachment(s)may be viewed on-line at the OC San website (www.ocsan.gov)with the complete agenda
package:
·Presentation
MD:lb
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11/26/2025
1
Supplemental Engineering Services,
Contract No. PSA2021-002
Presented by:
Martin Dix
Engineering Manager
Operations Committee
December 3, 2025
5 9 16
32 31
34
0
10
20
30
40
50
60
FY22-23 FY23-24 FY24-25
SUPPLEMENTAL STAFFING
AECOM Jacobs 2
Supplemental Staffing Levels
#
o
f
s
t
a
f
f
1
2
11/26/2025
2
3
Contract Costs
JacobsAECOMDescription
$29,700,000$29,700,000Contract Total
$24,767,3036,325,294Actuals through Sept 2025
$4,932,697$23,374,706Remaining Budget
Jacobs’ budget is projected to be depleted by February 2026,
approximately 15 months before the end of the current contract
4
Recommend to the Board of Directors to:
Authorize the General Manager to transfer funds between
existing Professional Services Agreements to provide
Supplemental Engineering Services, Contract No. PSA2021-
002, with Jacobs Project Management Co. and AECOM
Technical Services, Inc., to balance contract budgetsthrough April 2027, with no increase to the total Boardauthorized not to exceed amount of $29,700,000 peragreement.
Recommendation
3
4
11/26/2025
3
Questions?
5
5
OPERATIONS COMMITTEE
Agenda Report
Headquarters
18480 Bandilier Circle
Fountain Valley, CA 92708
(714) 593-7433
File #:2025-4618 Agenda Date:12/3/2025 Agenda Item No:6.
FROM:Robert Thompson, General Manager
Originator: Mike Dorman, Director of Engineering
SUBJECT:
SANTA ANA TRUNK SEWER REHABILITATION, PROJECT NO. 1-23
GENERAL MANAGER'S RECOMMENDATION
RECOMMENDATION: Recommend to the Board of Directors to:
Approve an Agreement for Purchase and Sale and Joint Escrow Instructions with C.J.Segerstrom &
Sons (“Segerstrom”)that defines the terms and conditions for temporary construction easements in
the amount of $509,300 for Santa Ana Trunk Sewer Rehabilitation,Project No.1-23,and
disbursement of severance damages from an escrow holding account with an upper limit amount of
$1,009,270 for potential adverse impacts during construction.
BACKGROUND
The Santa Ana Trunk Sewer carries sewage from the southern portion of the cities of Santa Ana and
Costa Mesa to the Orange County Sanitation District (OC San)Plant No.1.This sewer was
originally constructed in the early 1950s and consists of unlined 42-inch,and 48-inch diameter
reinforced concrete pipe.Over the past 70 years,several projects have replaced or rehabilitated
small portions of the sewer and rehabilitated most of the manholes.
The existing Santa Ana Trunk Sewer is located in permanent easements and public right-of-way.The
Segerstrom properties comprise a business park with multiple office,commercial,and industrial
buildings.OC San has negotiated temporary construction easements for a duration of 36 months
and parking spaces for a duration of 9 months with Segerstrom to perform the construction activities.
Construction activities within the subject properties include the construction of a new 84-inch
diameter manhole,rehabilitation of two existing manholes,installation of approximately 1,840 linear
feet of 48-inch diameter cured-in-place pipe (CIPP),routing of approximately 3,500 linear feet of
temporary bypass piping, and operation of temporary bypass pumping equipment.
RELEVANT STANDARDS
·Protect OC San assets
·Maintain collaborative and cooperative relationships with regulators, stakeholders, and
neighboring communities
Orange County Sanitation District Printed on 11/26/2025Page 1 of 3
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File #:2025-4618 Agenda Date:12/3/2025 Agenda Item No:6.
·Maintain a culture of improving efficiency to reduce the cost to provide the current services
level or standard
PROBLEM
Temporary construction easements are needed from Segerstrom to execute the project.Due to
concerns that the construction work and bypass operation may negatively impact Segerstrom tenants
and business operations,Segerstrom seeks an agreement providing compensation in the event
construction activities result in non-renewal of six tenants,inability to lease two vacant spaces,and
an increased duration in the use of parking spaces in the event the construction takes longer than 9
months.
PROPOSED SOLUTION
Approve an agreement with Segerstrom defining the terms and conditions for temporary construction
easements and the disbursement of severance damages.The terms and conditions of the escrow
for the severance damages include a checklist defining the requirements that need to be achieved
before disbursement is performed.All unused or excess funds remaining in escrow will be returned
to OC San.
TIMING CONCERNS
Construction is scheduled to begin in January 2026.Access to the Segerstrom properties will be
needed shortly after notice to proceed.
RAMIFICATIONS OF NOT TAKING ACTION
Without this severance agreement,Segerstrom will not provide the temporary construction
easements and rehabilitation of the Santa Ana Trunk Sewer will not be able to be performed.
PRIOR COMMITTEE/BOARD ACTIONS
November 2025 -Awarded a Construction Contract Agreement to Steve P.Rados,Inc.,for Santa Ana
Trunk Sewer Rehabilitation,Project No.1-23,for a total amount not to exceed $44,787,000 and
approved a contingency of $4,478,700 (10%).
ADDITIONAL INFORMATION
N/A
CEQA
The project is exempt from CEQA under Class 1 and 3 categorical exemptions set forth in California
Code of Regulations Sections 15301 and 15303.A Notice of Exemption was filed with the OC Clerk-
Recorder on April 29, 2022.
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File #:2025-4618 Agenda Date:12/3/2025 Agenda Item No:6.
FINANCIAL CONSIDERATIONS
This request complies with the authority levels of OC San’s Purchasing Ordinance.This item has
been budgeted (Budget FY 2025-26,Page A-5,Santa Ana Trunk Sewer Rehabilitation,Project No.1-
23) and the budget is sufficient for the recommended action.
ATTACHMENT
The following attachment(s)may be viewed on-line at the OC San website (www.ocsan.gov)with the complete agenda
package:
·DRAFT Agreement for Purchase and Sale and Escrow Instructions
·Presentation
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109464\18502580v6
AGREEMENT FOR PURCHASE AND SALE AND
JOINT ESCROW INSTRUCTIONS
C.J. SEGERSTROM & SONS, APNS 415-051-04, 415-061-08, 415-061-09, 415-071-07, 415-
081-
21, 415-081-25, 415-091-01, 415-091-02, 415-091-04
This AGREEMENT FOR PURCHASE AND SALE AND JOINT ESCROW
INSTRUCTIONS (“Agreement”) is made and entered into by and between the Orange County
Sanitation District, a California special district (“Buyer” or “DISTRICT”), and C.J.
Segerstrom & Sons, a California general partnership (“Seller”), with reference and respect to
the “Recitals” set forth in paragraphs A through F below. Buyer and Seller are sometimes
individually referred to herein as “Party” and collectively as “Parties”. The Parties hereto have
executed this Agreement on the dates set forth below next to their respective signatures. This
Agreement is effective when it is fully executed by the Parties (“Effective Date”). Buyer may,
but need not, confirm the Effective Date to Seller as the later of the date indicated on the
signature page below that (i) this Agreement has been approved as to form, executed and dated
by Buyer and (ii) Seller has executed and dated this Agreement. Seller hereby agrees that if
Seller has not dated this Agreement at the time Seller delivers the same to Buyer or Escrow
Agent, then Buyer or Escrow Agent may date the same as of the date of delivery, and/or receipt.
RECITALS
A. Seller is the owner in fee simple of that certain real property located in the City of
Costa Mesa, County of Orange, California, designated with Assessor’s Parcel Numbers 415-051-
04, 415-061-08, 415-061-09, 415-071-07, 415-081-21, 415-081-25, 415-091-01, 415-091-02,
415-091-04, and more particularly described in EXHIBIT 1 attached hereto and incorporated
herein by this reference (the “Property”).
B. Buyer desires to acquire a temporary interest in a certain portion of the Property
in connection with the Santa Ana Trunk Sewer Rehabilitation 1-23 Project (the “Project”). The
Project is a public project involving the rehabilitation of approximately 14,000 feet of large-
diameter sewer pipelines and 32 sewer manholes throughout the City of Santa Ana and the City
of Costa Mesa jurisdictions.
C. Specifically, Buyer seeks to acquire Temporary Construction Easements (“TCE”),
pursuant to a Temporary Construction Easement Deed in the form attached hereto as EXHIBIT 2
and incorporated herein by this reference (hereinafter referred to as the “TCE Deed”), in, on,
over, under, across, along and through that certain portions of the Property consisting of
approximately 17,486 square feet, as defined in scope in that certain document titled “Temporary
Construction Easement Attachment to Legal Description(s),” and as more particularly legally
described in Exhibit A and depicted in Exhibit B to the TCE Deed (hereinafter referred to as the
“Temporary Construction Easement Areas”).
D. Buyer extended to Seller a written offer dated January 21, 2025 pursuant to
Government Code Section 7267.2 to purchase the TCE for the Project.
DRA
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109464\18502580v6
E. The Parties negotiated Buyer’s acquisition of the TCE and have reached an
agreement regarding the terms of Buyer’s acquisition and use of the TCE.
F. Seller is willing to grant to Buyer the TCE, subject to the terms set forth in this
Agreement. Seller and Buyer hereby acknowledge and agree that Buyer is acquiring the use of
the TCE for a public use in connection with the Project, and that the TCE is necessary for the
construction, operation, and/or maintenance of the Project. The Parties further agree and
acknowledge that if the Parties had not reached an agreement for DISTRICT’s acquisition of the
TCE, DISTRICT staff would have recommended that DISTRICT’s governing body consider the
adoption of a resolution of necessity authorizing the initiation of an eminent domain proceeding
to acquire the TCE in accordance with the Eminent Domain Law. DISTRICT’s governing body
has the sole and exclusive discretion to make the findings required by Code of Civil Procedure
section 1240.030 for the adoption of a resolution of necessity pursuant to the Eminent Domain
Law. (Code of Civil Procedure section 1245.220). This Agreement is not a commitment or an
announcement of intent to acquire any other real property interests that DISTRICT may need for
the Project. Seller is solely responsible for consulting its tax advisors or seeking a letter ruling
from the Internal Revenue Service regarding the applicability of 26 U.S.C. Section 1033 to
Seller’s sale of the TCE to DISTRICT in connection with the Project. DISTRICT makes no
express or implied representation regarding the applicability of 26 U.S.C. Section 1033 to this
transaction.
NOW, THEREFORE, in consideration of the foregoing facts and circumstances, the
covenants, agreements, representations and/or warranties contained herein, as well as other good
and valuable consideration, the receipt and sufficiency of which is acknowledged by each of the
Parties, the Parties hereby agree as follows:
TERMS/AGREEMENT
1. PURCHASE AND SALE.
1.1 Temporary Construction Easement. Seller agrees to sell and convey to
Buyer, and Buyer agrees to purchase the TCE and use the TCE subject to the terms and conditions
hereinafter set forth in this Agreement and the TCE Deed attached as EXHIBIT 2 to this
Agreement.
1.2 Purchase Price; Severance Damage Fund.
1.2.1 The sum total purchase price for the TCE is FIVE HUNDRED
NINE THOUSAND THREE HUNDRED AND NO CENTS (509,300.00) (“Purchase Price”) a
breakdown of which is attached hereto as EXHIBIT 3. It is understood and agreed between the
Parties that payment of the Purchase Price includes, without limitation, payment for the TCE
conveyed by TCE Deed. It is understood and agreed by and between the Parties hereto that all site
improvements within the Temporary Construction Easement Areas will be protected in place or
replaced by the Buyer if damaged during the period of the TCE. It is further understood and agreed
to by and between the Parties hereto that the following improvements within the Temporary
Construction Easement Areas will be relocated: None.
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1.2.2 It is further understood that the Purchase Price does not account for
Severance Damages, as defined herein. “Severance Damages” include damages to Seller or its
successors or assigns, arising out of one or more of its tenants at one or more of the Seller’s
properties, electing to terminate, abandon, or not renew at the fair market value (as described in
EXHIBIT 7), its lease(s) with Seller, as a result, in whole or in part, of the Project and/or Buyer’s
or any Buyer Party’s (as defined herein) acts, omissions, or use of, the Property, Temporary
Construction Easement Area, or areas adjacent thereto. In accordance with the requirements of
EXHIBIT 7, attached hereto, Buyer shall deposit into a separate escrow account to be agreed upon
by the parties (“Severance Escrow”) the sum of ONE MILLION NINE THOUSAND TWO
HUNDRED SEVENTY DOLLARS ($1,009,270) (“Severance Damage Fund”). Payments from
the Severance Damage Fund in the Severance Escrow shall be released to Seller (“Severance
Payments”) in accordance with EXHIBIT 7.
1.3 Payment of Purchase Price. At the Closing (defined in Section 2.3 below),
Buyer shall pay to Seller through Escrow (defined in Section 2 below), the Purchase Price, payable
in cash, by cashier’s or certified check, or by wire transfer.
1.4 Scope and Use of the TCE. Seller’s grant of the TCE is subject to the terms
and conditions set forth in this Agreement and the terms and conditions set forth in the TCE Deed.
1.4.1 Pursuant to the TCE Deed, DISTRICT has the right to access and
use the TCE to facilitate the construction of the Project, and for all activities and uses necessary
and convenient thereto in connection with the construction and operation of the Project and in
accordance with the terms and conditions set forth in this Agreement and the terms and conditions
set forth in the TCE Deed.
1.4.2 The term of the TCE shall be the period beginning on the Closing
Date (as defined herein) and terminating on the earlier of the date that is (i) thirty (30) calendar
days following the date of Buyer’s completion of the Permitted Activities (as defined herein), (ii)
thirty-six (36) consecutive calendar months following the Closing Date, or (iii) the effective date
of any termination of this Agreement (“TCE Term”). Buyer shall provide Seller at least thirty
(30) days written notice prior to commencement of work within the Temporary Construction
Easement Areas. During the TCE Term Seller agrees to cooperate with the Buyer in order to keep
the Temporary Construction Easement Areas reasonably free and clear of all materials and debris
that would prevent the Buyer from performing the Permitted Activities (as defined herein).
However, nothing in this Agreement or the TCE Deed shall require the Seller or its tenants to alter
their use or operation of the Property, unless otherwise expressly stated herein. Upon expiration of
the TCE Term, Buyer shall execute, acknowledge and deliver to Seller a quitclaim deed or other
instrument of termination, sufficient in Seller’s reasonable opinion to terminate the TCE.
1.4.3 Except for Severance Payments due in accordance with this
Agreement, the Purchase Price includes full payment for the Buyer’s possession and use of the
TCE during the TCE Term.
1.4.4 A temporary construction barrier may be installed at or near the
perimeter of the Temporary Construction Easement Areas. The location and type of barrier shall
be subject to the written approval of the Seller, which approval shall not be unreasonably withheld,
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conditioned, or delayed. At the expiration of the TCE Term, Buyer shall, subject to reasonable
wear and tear that would have been incurred at the Property in the absence of the Project and TCE,
restore the Temporary Construction Easement Areas to a condition as near as practicable to the
condition that existed immediately prior to construction of the Project. Buyer shall not, however,
be required to restore changed condition or circumstance not resulting from construction of the
Project or Buyer’s use of the TCE.
1.4.5 During Project construction within the Temporary Construction
Easement Areas, Buyer will comply with all applicable laws, rules and regulations. Buyer will be
responsible and liable for any damage to the Property to the extent the same is proximately caused
by the Project or the use or occupancy of the Property by Buyer or its agents, employees,
representatives, contractors, subcontractors, suppliers, engineers, or other consultants
(collectively, “Buyer Parties”).
1.5 Reimbursement of Seller’s Appraisals. Buyer shall reimburse Seller’s
appraisal costs in an amount equal to the direct cost to Seller for Seller’s appraisal of the Property,
but not to exceed $5,000 per appraisal for up to five appraisals (“Appraisal Reimbursement”).
1.6 Reimbursement of Seller’s Legal Fees. Buyer shall reimburse Seller’s legal
costs in an amount equal to the direct cost to Seller for Seller’s related legal costs, but not to exceed
$5,000 per parcel for up to five parcels (“Legal Fee Reimbursement”).
2. ESCROW. Within five (5) business days of the Effective Date, DISTRICT shall
engage a Title Company (“Escrow Holder”) in order to open the escrow (“Escrow”) required by
this Agreement. This Agreement contains the joint escrow instructions of DISTRICT and Seller
for the grant of the TCE.
2.1 Opening of Escrow. Buyer will deposit a copy of the fully-executed
Agreement with Escrow Holder within ten (10) business days following the Effective Date. For
purposes of this Agreement, the Escrow shall be deemed open on the first date after the date that
Escrow Holder shall have received a fully-executed copy of this Agreement from Buyer
(“Opening of Escrow”). Escrow Holder shall notify Buyer and Seller, in writing, of the date
Escrow is opened (“Opening Date”).
2.2 Escrow Instructions. This Agreement constitutes the joint basic escrow
instructions of Buyer and Seller for grant of the TCE and payment of the Purchase Price. Buyer
and Seller shall execute, deliver, and be bound by any reasonable and customary supplemental or
additional escrow instructions (“Additional Instructions”) of Escrow Holder or other instruments
as may be reasonably required by Escrow Holder in order to consummate the transaction
contemplated by this Agreement. However, any such Additional Instructions shall not conflict
with, amend, or supersede any portions of this Agreement unless expressly consented or agreed to
in writing by both Seller and Buyer. In the event of any conflict or any inconsistency between this
Agreement and such Additional Instructions, this Agreement shall govern unless otherwise
specifically agreed to in writing by the Parties.
2.3 Close of Escrow. For purposes of this Agreement, “Closing” means the
closing or close of Escrow by the recordation in the Official Records of Orange County, California,
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of the TCE Deed in the form attached as EXHIBIT 2 hereto, including without limitation, Exhibit
A and Exhibit B thereto, which describe and depict the Temporary Construction Easement Areas,
as well as the disbursement of funds (including without limitation, the Purchase Price) and
distribution of any other documents by Escrow Holder, all as described in this Agreement. Subject
to the satisfaction of the conditions precedent below, Closing is to occur within sixty (60) days
following the Opening Date (“Closing Date”); provided, however, that Closing and, therefore, the
Closing Date may be extended as provided in Section 8.6 below; and provided, further, that
Closing may occur upon such earlier or later date as the Seller and Buyer mutually agree to in
writing or as otherwise provided in this Agreement. Buyer and Seller may mutually agree to change
the Closing Date by joint written notice to Escrow Holder. The Closing shall be conditioned upon
satisfaction, or written waiver by the Party for whose benefit the condition exists, of all conditions
precedent thereto. In the event the Escrow is not in a condition for the Closing to occur by the
Closing Date due to the uncured breach of either Buyer or Seller, then the Party who is not then in
default of the terms of this Agreement may terminate this Agreement as provided in Section 6. If
no (and until a) notice of termination as provided in Section 6 is received by Escrow Holder,
Escrow Holder is instructed to proceed with Closing as soon as possible.
2.4 Costs of Escrow. Because of Buyer’s status as a public entity, pursuant to
California Revenue and Taxation Code Section 11922, no documentary transfer tax will be payable
with respect to the conveyance(s) contemplated by this Agreement. Similarly, pursuant to
California Government Code Section 27383, no recording fees will be payable with respect to the
recording of the TCE Deed. Buyer shall pay the reasonable and customary costs of any Title Policy
(defined in Section 3.2 below) that it elects to obtain. Buyer shall pay the Escrow fees and any
notary fees attributable to the TCE Deed. Buyer shall also pay the additional costs, if applicable,
associated with any title endorsements requested by Buyer. Escrow Holder shall provide an
estimated Closing costs statement to Buyer and Seller at least three (3) days prior to the Closing
Date. Buyer shall pay any additional costs required for the Closing and Project, it being the express
intention of the Parties that Seller shall not be required to make any payment in connection with
this Agreement, the TCE, or the TCE Deed.
2.5 Buyer’s Conditions Precedent to Close of Escrow. The Closing and Buyer’s
obligation to acquire the TCE and pay the Purchase Price are subject to the satisfaction of the
following conditions for Buyer’s benefit (or Buyer’s waiver thereof, it being agreed that Buyer
may waive any or all of such conditions; provided, however, that the occurrence of the Closing
shall not waive or release any breach of or failure to perform under this Agreement by Seller not
actually known to Buyer) on or prior to the Closing Date:
2.5.1 Seller shall have tendered into Escrow all documents required of
Seller pursuant to this Agreement, including without limitation, the TCE Deed.
2.5.2 Seller shall have completed all of Seller’s obligations in Sections
2.2, 2.8, and 4.2 that are to be completed prior to the Closing as provided in this Agreement.
2.5.3 If Buyer has elected, in its sole discretion, to obtain a Title Policy
for the TCE, Escrow Holder shall have received an irrevocable commitment from the Title
Company to issue any Title Policy required pursuant to this Agreement, subject only to the
Permitted Exceptions, as set forth in more detail in Section 3 below.
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2.5.4 All representations and warranties of Seller hereunder shall be true
and correct as of the Effective Date and as of the Closing Date.
2.5.5 All property taxes and assessments attributable to the Temporary
Construction Easement Areas and due prior to the date of Closing shall have been paid by Seller
before delinquency and shall be current as of the Closing; provided, however, that, to the extent
the same are available, the Purchase Price proceeds may be used to make such payments with
Seller’s prior written consent.
2.5.6 Buyer shall have approved Escrow Holder’s estimated Closing costs
statement; such approval shall not be unreasonably withheld, conditioned, or delayed.
2.5.7 Buyer shall have determined that the Temporary Construction
Easement Areas is suitable for Buyer’s intended use and development, as set forth in more detail
in Section 4 below.
2.6 Seller’s Conditions Precedent to Close of Escrow. The Closing and Seller’s
obligation to grant the TCE are subject to the satisfaction of the following conditions for Seller’s
benefit (or Seller’s waiver thereof, it being agreed that Seller may waive any or all of such
conditions; provided, however, that the occurrence of the Closing shall not waive or release any
breach of or failure to perform under this Agreement by Buyer not actually known to Seller) on or
prior to the Closing Date:
2.6.1 Buyer shall have tendered into Escrow the complete Purchase Price,
and all payments and documents required of Buyer pursuant to this Agreement and as otherwise
required for Closing.
2.6.2 Buyer shall have completed in a timely fashion all of its obligations
that are to be completed prior to the Closing as provided in this Agreement.
2.6.3 Seller shall have approved Escrow Holder’s estimated Closing costs
statement, such approval shall not be unreasonably withheld, conditioned, or delayed.
2.6.4 Buyer shall have tendered into Escrow all unpaid Appraisal
Reimbursement amounts due to Seller.
2.6.5 Buyer shall have tendered into Escrow all unpaid Legal Fee
Reimbursement amounts due to Seller.
2.6.6 Buyer shall have opened the Severance Escrow, with Seller’s
approval, which approval shall not be unreasonably withheld or delayed, and tendered into the
Severance Escrow the Severance Damage Fund, in accordance with EXHIBIT 7.
2.7 Buyer’s Payments and Documents. Not less than one (1) day prior to
Closing,
Buyer shall pay or tender (as applicable) to Escrow Holder the following described
funds and documents (in recordable form, as necessary or appropriate):
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2.7.1 The Purchase Price.
2.7.2 Funds required to pay the Escrow fees, recording fees and notary
fees attributable to the TCE Deed as well as the costs of any Title Policy that DISTRICT has
elected to obtain, if any, and the additional costs, if applicable, associated with any title
endorsements requested by Buyer payable by Buyer pursuant to Section 2.4 of this Agreement.
2.7.3 Funds required to pay any additional reasonable charges customarily
charged to buyers in accordance with common escrow practices in the County of Orange.
2.7.4 Certificate accepting the TCE Deed.
2.7.5 Such other documents and funds required of Buyer under this
Agreement and, to the extent reasonable, customary, or usual, by Escrow Holder in the
performance of its contractual or statutory obligations.
2.7.6 All unpaid Appraisal Reimbursement amounts due to Seller.
2.7.7 All unpaid Legal Fee Reimbursement amounts due to Seller.
2.7.8 Confirmation that Buyer has tendered the Severance Damage Fund
amount into the Severance Escrow, in accordance with EXHIBIT 7.
2.8 Seller’s Documents. No less than one (1) day prior to Closing, Seller shall
tender to Escrow Holder the following described documents (in recordable form, as necessary or
appropriate):
2.8.1 The fully-executed and acknowledged TCE Deed.
2.8.2 A FIRPTA (Foreign Investment in Real Property Tax Act)
Certificate/Non-Foreign Status Affidavit complying with Federal laws, rules and requirements and
an appropriate California Form 593 (for example, Form 593-C); Seller’s failure to provide either
instrument shall result in tax withholding, payment, and the like in accordance with applicable
laws, rules and regulations.
2.8.3 Such other documents required of Seller under this Agreement and,
to the extent reasonable, customary, or usual, by Escrow Holder in the performance of its
contractual or statutory obligations.
2.9 Escrow Holder Responsibilities. Upon the Closing, Escrow Holder is
authorized and instructed to:
2.9.1 NOT USED.
2.9.2 Pay, and charge Buyer, any fees, charges and costs payable under
this Agreement, including, but not limited to, Sections 2.7 and 2.8 above. Before such payments
or charges are made, Escrow Holder shall notify Buyer and Seller of the fees, charges and costs
necessary to clear title and proceed with Closing.
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2.9.3 Record the TCE Deed.
2.9.4 Withhold from funds otherwise payable to Seller at Closing such
amount as Buyer is required to withhold therefrom pursuant to the following: (i) California
Revenue and Taxation Code Section 18662 (i.e., 3 1/3% of the total sales price) and timely submit
such sums to the California Franchise Tax Board, unless Buyer is relieved of such withholding
requirements under the provisions of said Section 18662; and (ii) Federal laws, rules and/or
regulations and timely pay over such funds to the appropriate Federal agency or authority, unless
Buyer is relieved of such withholding requirements under the provisions of such laws, rules and
regulations by Seller’s provision of (and Seller actually provides) the affidavit(s) and/or
statement(s) identified in Section 2.8.2. Further, deliver to each Party copies of all such
withholding forms, affidavits and/or certificates.
2.9.5 Disburse such other funds and deliver such other documents to the
applicable Party, as required herein.
2.9.6 If applicable, cause to be issued any Title Policy that DISTRICT, in
its sole discretion, has elected to obtain pursuant to Section 3.
2.10 Notices. All communications from Escrow Holder to either Buyer or Seller
shall be directed to the addresses and in the manner established in Section 8.1 below for notices,
demands, and communications between Buyer and Seller.
3. TITLE.
3.1 Election to Obtain Title Policy. DISTRICT may elect, at its sole discretion,
to obtain a Title Policy (as defined in Section 3.2) for the Temporary Construction Easement Areas.
DISTRICT shall provide written notice to Seller and Escrow of DISTRICT’s election to obtain or
not obtain a Title Policy within fifteen (15) calendar days of the Effective Date. If DISTRICT
determines not to obtain a Title Policy, or fails to provide the notice required in this Section 3.1
within the time required herein, then the procurement of the Title Policy shall not be deemed a
condition of Closing pursuant to Section 2.5.3, above.
3.2 Condition of Title; Title Policy. If DISTRICT elects, in its sole discretion,
to obtain a Title Policy for the Temporary Construction Easement Areas, DISTRICT will require,
as a condition of Closing for DISTRICT’s benefit, that the Temporary Construction Easement
Areas be subject only to the Permitted Exceptions. If DISTRICT elects to obtain said Title Policy,
at and as a condition of Closing for Buyer’s benefit, the Title Company of DISTRICT’s choice
(“Title Company”) shall be prepared to issue to Buyer, upon Closing, a policy of title insurance
(whether a CLTA, ALTA or ALTA extended coverage policy, as determined by Buyer, the “Title
Policy”) in an amount equal to the Purchase Price, showing the TCE subject only to the Permitted
Exceptions. Escrow Holder shall cause Title Company to issue the Title Policy to Buyer upon the
occurrence of the Closing.
3.3 Permitted Exceptions. The term “Permitted Exceptions” as used herein
shall mean the following conditions and exceptions to title or possession:
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3.3.1 Any and all liens to secure payment of general and special real
property taxes and assessments, not delinquent.
3.3.2 Any and all liens of supplemental taxes assessed pursuant to Chapter
3.5 commencing with Section 75 of the California Revenue and Taxation Code accruing on or
after the Closing; provided, however, that, notwithstanding anything contained in this Agreement
to the contrary, Seller shall be responsible and liable for all taxes that relate to any period prior to
the Closing, including, without limitation, supplemental taxes which are not assessed or charged
and/or which do not become due or owing until after the Closing.
3.3.3 Matters affecting the condition of title created by or with the consent
of Buyer.
3.3.4 Other exceptions to title disclosed by the preliminary title report
listed in Exhibit 8, from the Title Company, together with copies of the underlying documents
relating to the Schedule B exceptions set forth in such report (collectively, the “Title Report”).
3.3.5 Any and all other exceptions to title, including all existing
encumbrances, mortgage(s), deed(s) of trust, and other security interests, existing on title as of (i)
the Effective Date, and/or (ii) the Closing Date, subject to Buyer’s right to object in writing to
Seller as to any exception to title first arising after the Effective Date and before the Closing Date
and which materially impacts the Buyer’s Permitted Activities on the TCE during the TCE Term.
3.4 Title Report. Buyer has obtained Title Reports listed on Exhibit 8. Buyer
hereby approves such Title Reports, including all existing superior title encumbrances. This
Section 3.4 applies whether or not Buyer has elected, in its sole discretion, to obtain a Title Policy
for the TCE.
4. SUITABILITY AND CONDITION OF TCE.
4.1 Determination of Suitability and Approval of Environmental and Other
Conditions. It is a condition precedent to the Closing for Buyer’s benefit that Buyer has
determined that the TCE is suitable for Buyer’s intended use, as determined by Buyer in its sole
discretion. Prior to the Closing Date, Buyer shall determine whether the Temporary Construction
Easement Areas are suitable and shall provide to Seller and Escrow Holder its written notice of
such determination; provided, however, that any failure of Buyer to provide notice shall be deemed
approval; and, in connection with any disapproval, Buyer may, but need not, include its election
to extend the Closing Date as provided in Section 8.6 below. In the event Buyer determines that
the TCE is suitable, such determination by Buyer shall not alter or diminish Seller’s covenants,
agreements, representations and/or warranties made herein or under law, unless a representation
or warranty is expressly and specifically waived in writing in whole or in part by Buyer. In the
event Buyer determines that the Temporary Construction Easement Areas are not suitable, then
Buyer may terminate this Agreement as provided in Section 6.1 below.
4.2 Inspections, Testing and Right of Entry. Prior to Closing, Buyer may
conduct, at Buyer’s sole expense, such inspections and testing of the Temporary Construction
Easement Areas, including, without limitation, any improvements thereon, as Buyer may desire or
deem appropriate, in Buyer’s reasonable discretion, to determine the suitability of the Temporary
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Construction Easement Areas for Buyer’s intended use. In conducting such inspections and testing,
Buyer shall endeavor to minimize, and shall be responsible for, damage to the Temporary
Construction Easement Areas, as well as any improvements thereon, and shall, in the event the
Closing fails to occur for any reason other than Seller’s default under this Agreement, return the
Temporary Construction Easement Areas, including any improvements thereon, to their condition
prior to the inspections and testing, except that Buyer shall have no responsibility or liability for
returning the Temporary Construction Easement Areas to its prior condition to the extent that any
change or modification resulted from (i) reasonable wear and tear, (ii) force majeure or (iii) any
other cause not within the reasonable control of Buyer or any Buyer Parties, including, without
limitation, the acts or omissions of any person or entity other than Buyer and/or Buyer Parties.
Seller hereby grants to Buyer and its representatives permission and a license to enter upon the
Temporary Construction Easement Areas at all reasonable times prior to the Closing Date for the
purpose of conducting such inspections and testing; provided that Buyer provides Seller with not
less than five (5) calendar days prior written notice of the specific areas of the Temporary
Construction Easement Areas that Buyer is requesting access to, and Seller consents to such access
in writing. In the event that any Temporary Construction Easement Areas are occupied by any
person(s) other than Seller, Seller shall make arrangements with such person(s) to ensure
reasonable access by Buyer, including, without limitation, Buyer’s representatives, in order to
conduct the inspections and testing pursuant to this Section 4.2.
Seller makes no representations or warranties with respect to, and shall not be responsible for, the
condition or safety of the Temporary Construction Easement Areas accessed by Buyer or any
Buyer Party. Buyer releases Seller and its tenants, and agrees to indemnity, defend, and hold
harmless the same, for any claims, losses, damages, injury, death, liabilities, and/or costs incurred
by Seller or its tenants to the extent arising out of Buyer’s or Buyer Parties’ access and use of the
Property. Buyer shall not disrupt the operations or use of the Property by Seller’s tenants and their
invitees and employees, during all such times as Buyer or any Buyer Party may be on the Property.
5. SELLER’S ACKNOWLEDGMENT.
5.1 Full Satisfaction. Seller hereby acknowledges that it is the sole and lawful
owner of the Property and the Purchase Price paid to Seller through this Agreement constitutes the
full and complete compensation for Buyer’s property interest obtained in the TCE in accordance
with this Agreement. Seller, on behalf of itself and its successors and assigns, acknowledges that
Buyer’s performance under this Agreement constitutes full and complete satisfaction of Buyer’s
obligations to compensate Seller for the TCE in accordance with this Agreement.
5.2 Notice to Others. If Seller sells, transfers, assigns or otherwise conveys the
Property or any interest in the Property affecting the TCE, Seller shall notify the purchaser,
successor, assignee or other transferee of the existence and terms of this Agreement, including,
without limitation, the TCE Deed and the obligations, liabilities and duties as well as the rights
and remedies of the Parties. Buyer has no obligation, liability, or duty to compensate any
purchaser, successor, assignee or other transferee of the Property or any interest in the Property,
for the TCE, interests, rights and remedies granted to or obtained by Buyer under or pursuant to
this Agreement.
This Section 5.2 will survive the Close of Escrow.
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6. TERMINATION, DEFAULTS AND REMEDIES.
6.1 Exercise of Rights to Terminate. In the event Buyer elects to exercise its
right to terminate this Agreement and the Escrow as provided in Section 2.3, 6.3 or 8.5, then Buyer
may so terminate by giving notice, in writing, of such termination to Seller and Escrow Holder. In
the event Seller elects to exercise its rights to terminate this Agreement and the Escrow as provided
in Section 2.3 or 6.2, then Seller may so terminate by giving notice, in writing, of such termination
to Buyer and Escrow Holder. In either such event, the Party so terminating shall, except as
otherwise expressly provided in Section 6.2 or 6.3 below, pay all Escrow Holder and Title
Company termination fees and charges (collectively, “Termination Costs”).
6.2 Buyer’s Breach. In the event Buyer breaches any obligation under this
Agreement which Buyer is to perform and fails to cure such breach within ten (10) business days
of receipt of written notice of such breach from Seller, then, (a) in addition to pursuing any other
rights or remedies which Seller may have at law or in equity, including, without limitation, any
and all damages resulting from such breach, (b) Seller may, at Seller’s option, (i) terminate this
Agreement and the Escrow by giving notice, in writing, of such termination to Buyer and Escrow
Holder, or (ii) initiate and prosecute an action for specific performance of this Agreement. In the
event of a Seller termination for Buyer’s breach, Buyer shall pay all Terminations Costs.
6.3 Seller’s Breach. In the event Seller breaches any obligation under this
Agreement which Seller is to perform prior to the Closing and fails to cure such breach within ten
(10) business days of receipt of written notice of such breach from Buyer, then, (a) in addition to
pursuing any other rights or remedies which Buyer may have at law or in equity, including, without
limitation, any and all damages resulting from such breach, (b) Buyer may, at Buyer’s option, (i)
terminate this Agreement and the Escrow by giving notice, in writing, of such termination to Seller
and Escrow Holder, or (ii) initiate and prosecute an action for specific performance of this
Agreement. In the event of a Buyer termination for Seller’s breach, Seller shall pay all
Terminations Costs.
6.4 Return of Funds and Documents; Release of Liability as to Escrow Holder.
In the event Escrow Holder terminates the Escrow as a result of having received notice, in writing,
from Buyer or Seller of its election to terminate the Escrow as provided herein, then Escrow Holder
shall terminate the Escrow and return all funds, less Termination Costs, as appropriate, and
documents to the Party depositing the same. Further, the Parties hereby release Escrow Holder,
and shall hold Escrow Holder free and harmless, from all liabilities associated with such
termination excepting for Escrow Holder’s obligations to return funds and documents as provided
herein.
7. REPRESENTATIONS AND WARRANTIES.
7.1 Representations and Warranties. Buyer and Seller hereby represents,
warrants, covenants and agrees to and for the benefit of the other Party, that the following
statements are true and correct as of the Effective Date, and shall be true and correct as of Closing,
and acknowledge and agree that the truth and accuracy of such statements shall constitute a
condition precedent to all of the other Party’s obligations under this Agreement:
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7.1.1 Authority. Seller represents and warrants that it owns the Property
in fee simple and has full power and authority to grant the TCE to Buyer and to perform its
obligations pursuant to this Agreement. This Agreement and all other documents delivered by
Seller or Buyer to the other Party under or pursuant to this Agreement, at or prior to the Closing,
have been, or will be, duly executed and delivered by Seller or Buyer (as applicable) and are, or
will be, legal, valid and binding obligations of delivering Party, sufficient for the Parties’
obligation hereunder (including without limitation, Seller’s conveyance of the TCE to Buyer),
and are enforceable in accordance with their respective terms.
7.1.2 Possessory Interests; Requirement for Release. Seller acknowledges
that there are multiple tenants on the Property. Seller shall provide notice to its tenants of the
Project in a timely manner, and Buyer and Seller shall use good faith efforts to facilitate the
resolution of any tenant complaints against the Buyer caused by Buyer’s use of the Temporary
Construction Easement Area in accordance with this Agreement.
7.1.3 No Liens or Encumbrances. Other than as is disclosed or covered by
Subsections 7.1.2 above, the Title Report, or 7.1.4 below, the Property, including the portions
comprising the Temporary Construction Easement Areas, is free and clear of and from liens or
encumbrances that could interfere with the intended use by Buyer; and, therefore, Buyer, to the
extent of its TCE interest in the Property described in the TCE Deed (once recorded pursuant to
this Agreement) and subject to the requirements of this Agreement, shall quietly enjoy its rights in
and to the Temporary Construction Easement Areas granted pursuant to the TCE Deed without
disturbance or inference by Seller or anyone claiming by, through or under Seller.
7.1.4 Mortgage or Deed of Trust. If the Property is encumbered by a
mortgage(s), deed(s) of trust and/or other security instrument(s), Seller shall be responsible and
liable for payment of any demand under any authority of such security instrument(s) out of Seller’s
proceeds or otherwise. Such amounts may include, but are not limited to, payments of unpaid
principal and interest. Seller will cooperate with Buyer in providing any documentation and/or
approvals reasonably required from Seller’s lenders holding any mortgage(s), deed(s) of trust, or
other security instrument(s) in connection with the Property.
7.1.5 Hazardous Materials. Seller is aware of and shall comply with its
obligation under California Health and Safety Code Section 25359.7 to disclose information to
Buyer regarding the environmental status of the Property. To Seller’s knowledge, the Property and
the area comprising the TCE and any contiguous real property owned by Seller is not in violation
of any federal, state or local statute, regulation or ordinance relating to industrial hygiene or to
environmental conditions on, under or about the Property including, without limitation, soil and
groundwater conditions underlying the Property that could affect the Property or its use. Neither
Seller, nor, to Seller’s knowledge, any other person or predecessor in interest, has used, generated,
manufactured, stored or disposed of on, under or about the Property, or transported to or from the
Property, any “Hazardous Materials” as defined in any state, federal or local statute, ordinance,
rule or regulation applicable to the Property, including, without limitation, any flammable
materials, explosives, radioactive materials, hazardous or contaminated materials or substances,
toxic or noxious materials, substances or related materials or substances, as well as any substance
whose nature and/or quantity of existence, use, manufacture, disposal or effect render it subject to
Federal, state or local regulation, investigation, remediation or removal as potentially injurious to
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public health or welfare. Notwithstanding the foregoing, the above represents Seller’s actual
knowledge as of the date of this Agreement, and Buyer shall not be entitled to rely upon Seller’s
statements herein in lieu of performing reasonable due diligence in investigating the conditions of
the Project site areas related to the Property, including without limitation, any soil conditions.
Buyer shall be responsible for all Hazardous Materials introduced to the Property by Buyer or any
Buyer Parties, which responsibility shall include without limitation, compliance with all applicable
local, state or federal law regarding the use of, disposal of, notices regarding, and the proper
handling of, such Hazardous Materials. Buyer shall indemnify, defend, and hold harmless, Seller
and Seller’s tenants, from and against any all claims, demands, losses, damages, disbursements,
liabilities, obligations, fines, penalties, costs and expenses related to any Hazardous Materials
brought to or disturbed upon the Property, in connection with the Project or TCE.
7.1.6 Litigation. There are no claims, actions, suits or proceedings
continuing, pending or, to Seller’s knowledge, threatened (i) against or affecting the Temporary
Construction Easement Areas, or (ii) involving the validity or enforceability of this Agreement or
of any other documents or instruments to be delivered by Seller at Closing, in either case, whether
at law or in equity, or before or by any federal, state, municipal or other governmental department,
board, commission, bureau or instrumentality. Seller is not subject to, or in default under, any
notice, order, writ, injunction, decree or demand of any court or any governmental department,
board, commission, bureau, or instrumentality, that may interfere with the Buyer’s use of the TCE
in accordance with this Agreement.
7.1.7 No Breach. The Parties represent that to the best of their knowledge,
information and belief, the execution and delivery of this Agreement and the consummation of the
transaction(s) contemplated by this Agreement will not violate or result in any breach of or
constitute a default under or conflict with, or cause any acceleration of any obligation with respect
to any provision or restriction of any lien, lease, agreement, contract, instrument, or, any order,
judgment, award, decree, statute, regulation or ordinance, or any other restriction of any kind or
character to which such Party is a party or by which such Party or the Temporary Construction
Easement Areas is bound.
7.1.8 No Condemnation or Other Proceedings. Exclusive of any action
proposed or contemplated by Buyer, Seller is not aware of any contemplated condemnation of the
Property or any portion thereof by any public agency, authority, or entity. Buyer has negotiated in
good faith to acquire and to pay just compensation for its acquisition of the TCE. Seller
understands that, if the acquisition set forth in and contemplated by this Agreement had not been
(or is not) successful, then staff for Buyer may have recommended (or may recommend) initiation
of eminent domain proceedings to acquire the TCE and/or interests therein and/or portions thereof.
7.2 Survival of Representations and Warranties. The Parties acknowledge and
agree that the covenants, agreements, representations, and warranties of each Party set forth in this
Agreement shall be true and correct on and as of the Effective Date as well as the Closing, and
each Party’s liability for any breach, default or failure of the same, including, without limitation,
any misrepresentation, shall survive not only the recordation of the TCE Deed, but also the
Closing.
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8. OTHER.
8.1 Notices and Demands. All notices or other communications required or
permitted between the Parties hereunder shall be in writing, and shall be (i) personally delivered,
(ii) sent by United States registered or certified mail, postage prepaid, return receipt requested, (iii)
sent by email transmission, or (iv) sent by nationally recognized overnight courier service (e.g.,
Federal Express or United Parcel Service), addressed to the Party to whom the notice is given at
the address(es) provided below, subject to the right of any Party to designate a different address
for itself by notice similarly given. Any notice so given by registered or certified United States
mail shall be deemed to have been given on the third business day after the same is deposited in
the United States mail. Any notice not so given by registered or certified mail, such as notices
delivered by personal delivery, email or courier service, shall be deemed given upon receipt,
rejection, or refusal of the same by the Party to whom the notice is given. Rejection or other refusal
to accept or the inability to deliver because of changed address of which no notice was given shall
be deemed to constitute receipt of the notice or other communication sent.
To Buyer: Orange County Sanitation District
Attn: General Manager c/o Victoria Pilko
18480 Bandilier Circle
Fountain Valley, CA 92708
Telephone: (714) 962-2411
Email: vpilko@ocsan.gov
To Seller: C.J. Segerstrom & Sons
Attn: Scott Moeller
3315 Fairview Rd.
Costa Mesa, CA 92626
Telephone: (714) 435-2053
Email: MoellerS@southcoastplaza.com
8.2 [Intentionally Deleted]
8.3 Entry, Possession, Use, Construction and Operation.
8.3.1 Upon Closing in accordance with this Agreement, including without
limitation, the Seller’s receipt of the Purchase Price and the recordation of the TCE Deed, Buyer
shall have the right of possession and use of the Temporary Construction Easement Areas to the
extent provided in this Agreement and the TCE Deed. Buyer’s access to, and use of the Property,
shall be limited to the Temporary Construction Easement Area within the TCE, and solely for
purposes of performing work and services necessary for the completion of the “Permitted
Activities,” as defined in EXHIBIT 4, attached hereto.
8.3.2 Upon Closing in accordance with this Agreement, including without
limitation, the Seller’s receipt of the Purchase Price and the recordation of the TCE Deed, Buyer
shall have the right to enter the Property to connect any utilities or complete any utility
reconnections included in the Permitted Activities and required in connection with the Project.
Except for any entry required for emergency purposes in connection with utility connections or
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reconnections on the Property, Buyer will provide Seller with a minimum of forty-eight (48) hours
written notice prior to entering the Property to complete any necessary utility connections or utility
reconnections. Buyer shall not be permitted to stop, suspend, or interrupt the utilities and services
required for the full and ongoing operations of all existing improvements and facilities on the
Property.
8.3.3 Buyer makes no representation, warranty, covenant, or agreement
that the Project shall be constructed. In the event Buyer elects not to move forward with the Project,
Buyer shall provide written notice to Seller of the same.
8.4 Brokers and Sales Commissions. Neither Buyer nor Seller shall be
responsible or liable to the other Party for, and will not be required to pay, any sales or brokerage
commissions and/or finder’s fees for which Buyer or Seller has incurred any obligation with
respect to the transaction which is the subject of this Agreement. The Parties’ obligations,
liabilities and duties under this Section 8.4 shall survive the Closing or the termination of this
Agreement.
8.5 Damage or Destruction. Should the Temporary Construction Easement
Areas be materially damaged or destroyed by fire, earthquake, or other natural disaster which
renders impossible the Buyer’s completion of the Project in accordance with this Agreement and
TCE Deed, then the Parties shall meet and confer in good faith to address any required revisions
to this Agreement and the TCE Deed.
8.6 Extension of Closing and Closing Date. Buyer may, upon written notice to
Seller, extend the Closing Date and, therefore, the Closing for a reasonable period in order to
satisfy or to provide time for others to satisfy the conditions to Closing in favor of Buyer set forth
in this Agreement, including, without limitation, the following: (i) that, in accordance with
Subsection 2.5.3 and Section 3 above, the TCE Deed is subject only to the Permitted Exceptions
and that title to the same is otherwise acceptable to Buyer; (ii) that, in accordance with Subsection
2.5.7 and Section 4 above, Buyer has determined that the TCE is suitable for Buyer’s intended use;
and (iii) that, in accordance with Subsection 2.5.4 and Section 7 above, Seller’s representations
and warranties are true and accurate and Buyer has received any consent(s) and/or release(s)
required by Subsections 7.1.2 and 7.1.4 above.
9. INCORPORATION OF RECITALS; WHOLE AGREEMENT.
9.1 Recitals. The preamble at the beginning of this Agreement, as well as the
Recitals set forth in paragraphs A through F immediately after the preamble, are hereby
incorporated into this Agreement as if set forth in full in this Section 9.1.
9.2 Whole Agreement. Consistent with Section 10.17 below, the Parties hereto
acknowledge and agree that they have set forth the whole of their agreement in this instrument.
10. MISCELLANEOUS.
10.1 Authority to Bind. Each individual executing this Agreement on behalf of
an entity represents and warrants that he or she has been authorized to do so by the entity on whose
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behalf he or she executes this Agreement, and that said entity will thereby be obligated to perform
the terms of this Agreement.
10.2 Survival of Covenants. The covenants, representations and warranties of
both Buyer and Seller set forth in this Agreement shall survive the Closing as well as the
recordation of the TCE Deed.
10.3 Time of Essence. Time is of the essence as it pertains to each and every
term, condition, obligation and provision of this Agreement.
10.4 Required Actions of Buyer and Seller. Buyer and Seller agree to execute
such instruments and documents and to diligently undertake such actions as may be required in
order to consummate the purchase and sale herein contemplated and shall use commercially
reasonable efforts to accomplish the Closing in accordance with the provisions of this Agreement.
10.5 Counterparts; Copies. This Agreement may be executed in multiple
counterparts, each of which shall be deemed an original, but all of which, together, shall constitute
one and the same instrument. Except as required for recordation, the Parties as well as Escrow
Holder and Title Company shall accept copies of signatures, including, without limitation,
electronically transmitted (for example, by e-mail, facsimile, PDF or otherwise) signatures.
10.6 Captions. Any captions to, or headings of, the articles, sections, subsections,
paragraphs, or subparagraphs or other provisions of this Agreement are solely for the convenience
of the Parties, are not a part of this Agreement, and shall not be used for the interpretation or
determination of the validity of this Agreement or any provision of this Agreement.
10.7 No Obligations to Third Parties. Except as otherwise expressly provided in
this Agreement, the execution and delivery of this Agreement shall not be deemed to confer any
rights upon, nor obligate any of the Parties to, any person or entity other than the Parties.
10.8 Exhibits. The Exhibits attached to this Agreement are hereby incorporated
into this Agreement by this reference.
10.9 Waiver. The waiver or failure to enforce any provision of this Agreement
shall not operate as a waiver of any future breach of any such provision or any other provision of
this Agreement.
10.10 Governing Law; Venue. This Agreement shall be construed in accordance
with the laws of the State of California. Any and all legal actions brought to enforce or interpret
the terms and provisions of this Agreement shall be commenced exclusively in a court of
competent jurisdiction in the County of Orange.
10.11 Assignment. Buyer shall not be permitted to assign this Agreement, or its
rights and remedies in, to and under the TCE Deed, or any right or obligation herein and therein,
to any other party without the prior written consent of the Seller.
10.12 Successors and Assigns. This Agreement, the TCE Deed, and any right or
obligation herein and therein, shall inure to the benefit of the successors and assigns of the Parties.
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10.13 Ratification. This Agreement is subject to the approval and ratification by
the Buyer’s governing body or its delegated representative in accordance with EXHIBIT 5,
attached hereto.
10.14 Severability. If any term or provision of this Agreement shall be held invalid
or unenforceable, the remainder of this Agreement shall not be affected.
10.15 Construction. This Agreement will be liberally construed to effectuate the
intention of the Parties with respect to the transaction(s) described herein. In determining the
meaning of, or resolving any ambiguity with respect to, any word, phrase or provision of this
Agreement, neither this Agreement nor any uncertainty or ambiguity herein will be construed or
resolved against either Party (including the Party primarily responsible for drafting and preparation
of this Agreement), under any rule of construction or otherwise, it being expressly understood and
agreed that the Parties have participated equally or have had equal opportunity to participate in the
drafting thereof.
10.16 Legal Fees. Except for Buyer’s obligation to reimburse Seller’s legal fees
in accordance with Section 1.6, above, each Party shall be responsible for payment of its own
attorneys’ fees with respect to negotiation and preparation of this Agreement. However, in the
event of the bringing of any action or proceeding to enforce, interpret or construe any of the
provisions of this Agreement, including, without limitation, seeking damages as a result of breach
of this Agreement, the prevailing Party in such action or proceeding, whether by final judgment or
out of court settlement, shall be entitled to have and recover of and from the other Party all costs
and expenses of suit, including actual attorneys’ fees.
10.17 Entire Agreement; Amendment. This Agreement supersedes any prior
agreements, negotiations and communications, oral or written, and (together with the TCE Deed)
contains the entire agreement between Buyer and Seller as to the subject matter hereof. The terms
of this Agreement may not be modified or amended except by an instrument in writing executed
by each of the Parties hereto.
10.18 Special Provisions. The “Special Provisions” as they may apply to any or
all portions of the Property as further described and attached hereto as EXHIBIT 6, if any, are
hereby incorporated into and made a part of this Agreement by this reference as if set forth in full
in this Section 10.18. In the event of any conflict or inconsistency between this Agreement and the
Special Provisions, the terms of the Special Provisions shall prevail and control.
[Signatures on the following pages]
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SIGNATURE PAGE TO
AGREEMENT OF PURCHASE AND SALE
AND JOINT ESCROW INSTRUCTIONS
IN WITNESS WHEREOF, the Parties hereto have executed this Agreement as of the date(s) set
forth below next to their respective signatures.
“BUYER”
Orange County Sanitation District,
A California Special District
By: ___________________________
Title: Robert C. Thompson
General Manager
Date: _________________________
APPROVED AS TO FORM:
Best, Best & Krieger, LLP
By: ______________________
Scott C. Smith
General Counsel
Date: _____________________
“SELLER”
C. J. SEGERSTROM & SONS, a California
general partnership
By: Henry T. Segerstrom Management LLC,
a California limited liability company,
Manager
By
________________________________
Title: Manager
By: HTS Management Co., Inc., a California
corporation, Manager
By
Title: Senior Vice President
Date: ______________________
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EXHIBIT LIST
Exhibit 1 − Legal Description(s) of Property
Exhibit 2 – Form of Temporary Construction Easement Deed (including Exhibits A & B thereto)
Exhibit 3 – Purchase Price Breakdown
Exhibit 4 − Entry, Possession and Use Provisions
Exhibit 5 – District Board Certification Form
Exhibit 6 – Special Provisions
Exhibit 7 – Temporary Severance Damages
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EXHIBIT 1 TO
PURCHASE AND SALE AGREEMENT
AND JOINT ESCROW INSTRUCTIONS
Legal Description(s) of Entire Property
[attached behind this page]
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EXHIBIT 2 TO
PURCHASE AND SALE AGREEMENT
AND JOINT ESCROW INSTRUCTIONS
Form of Temporary Construction Easement Deed
[attached behind this page]
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Recording Requested by:
ORANGE COUNTY SANITATION
DISTRICT
When Recorded Mail to:
Orange County Sanitation District
Attn: Clerk of the Board
18480 Bandilier Circle
Fountain Valley, CA 92708
“This document is recorded for the benefit of
the Orange County Sanitation District and is
therefore, exempt from recording fees pursuant
to Gov’t Code Section 27383 and exempt from
Documentary transfer tax pursuant to
Rev. & Tax Code Section 11922”
APNs: 415-051-04, 415-061-08, Space above this line is for Recorder’s Use
415-061-09, 415-071-07, 415-091-04
415-091-01, 415-091-02, 415-081-21
415-081-25
GRANT OF TEMPORARY CONSTRUCTION EASEMENT
C.J. SEGERSTROM & SONS, A CALIFORNIA GENERAL PARTNERSHIP (“Grantor”), is the owner of
that certain real property located in the City of Costa Mesa, County of Orange, State of California, designated as
Assessor’s Parcel Numbers 415-051-04, 415-061-08, 415-061-09, 415-071-07, 415-091-04, 415-091-01, 415-091-02,
415-081-21, 415-081-25 (“Grantor’s Property”). FOR A VALUABLE CONSIDERATION, receipt of which is hereby
acknowledged, Grantor hereby grants to ORANGE COUNTY SANITATION DISTRICT, a California special district
(“Grantee”), a non-exclusive temporary construction easement (“TCE”) for construction of the Santa Ana Trunk Sewer
Rehabilitation 1-23 Project (“Project”), in, on, over, under, across, along and through that portion of Grantor’s Property
(“Temporary Construction Easement Areas”) as legally described in Exhibit “A” and depicted in Exhibit “B,” all of said
documents are attached hereto and incorporated herein by this reference. Grantees rights, obligations, and scope of
permitted limited use of the TCE and Temporary Construction Easement Area, are subject to and limited by, that certain
Agreement for Purchase and Sale and Joint Escrow Instructions by and between Grantor and Grantee, dated November
13, 2025 (“PSA”). It is understood and agreed that this TCE shall expire, terminate, and be of no force or effective, upon
the earlier of the date that is (i) thirty (30) calendar days following the date of Grantee’s completion of the Permitted
Activities (as defined in the PSA), (ii) thirty-six (36) consecutive calendar months following the date of recordation of this
TCE, or (iii) the effective date of any termination of the PSA.
Signatures appear on the following page.
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GRANTOR
C. J. SEGERSTROM & SONS, a California
general partnership
By: Henry T. Segerstrom Management LLC,
a California limited liability company, Manager
By ________________________________
Title: Manager
By: HTS Management Co., Inc., a California
corporation, Manager
By
Title: Senior Vice President
Date: ______________________
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ACKNOWLEDGMENT
State of California
County of )
On before me, , Notary Public personally
appeared ,
who proved to me on the basis of satisfactory evidence to be the person(s) whose name(s) is/are subscribed to
the within instrument and acknowledged to me that he/she/they executed the same in his/her/their authorized
capacity(ies), and that by his/her/their signature(s) on the instrument the person(s), or the entity upon behalf of
which the person(s) acted, executed the instrument.
I certify under PENALTY OF PERJURY under the laws of the State of California that the foregoing paragraph
is true and correct.
WITNESS my hand and official seal.
____________________________________ (Seal)
Signature of Notary Public
A notary public or other officer completing this certificate verifies only the identity of the individual
who signed the document to which this certificate is attached, and not the truthfulness, accuracy, or
validity of that document.
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EXHIBIT “A”
LEGAL DESCRIPTION
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EXHIBIT “A”
TEMPORARY CONSTRUCTION EASEMENT (TCE)
APN: 415-081-21
\\Us0383-ppfss01\184031625\07 Design\geomatics\submittals\LEGAL\APN415-081-21LGL Page 1 of 1
THE WEST 3.00 FEET OF PARCEL 2 OF LOT LINE ADJUSTMENT 84-05, IN THE CITY OF
COSTA MESA, COUNTY OF ORANGE, STATE OF CALIFORNIA, RECORDED JUNE 5, 1984 AS
INSTRUMENT NO. 84-231309 OF OFFICIAL RECORDS, IN THE OFFICE OF THE COUNTY
RECORDER OF SAID COUNTY.
CONTAINING 1,038 SQUARE FEET, MORE OR LESS.
ALSO AS SHOWN ON EXHIBIT “B” ATTACHED HERETO AND BY THIS REFERENCE MADE A
PART HEREOF.
SUBJECT TO COVENANTS, CONDITIONS, RESTRICTIONS, RESERVATIONS, EASEMENTS,
RIGHTS, RIGHTS-OF-WAY AND OTHER MATTERS OF RECORD, IF ANY.
PREPARED BY: STANTEC
UNDER THE DIRECTION OF:
________________________
MINH A. LE, PLS NO. 8543
JANUARY 5, 2024
JN: 1840 31625
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735 Carnegie Drive Suite 280
San Bernardino CA 92408-3588
909-335-6116 stantec.com
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EXHIBIT “A”
TEMPORARY CONSTRUCTION EASEMENT (TCE)
APN: 415-081-24, 25 & 26
\\Us0383-ppfss01\184031625\07 Design\geomatics\submittals\LEGAL\APN415-081-25LGL Page 1 of 1
THE WEST 3.00 FEET OF LOT 44 OF TRACT NO. 10876, IN THE CITY OF COSTA MESA,
COUNTY OF ORANGE, STATE OF CALIFORNIA, PER MAP FILED IN BOOK 486, PAGES 1
THROUGH 8, INCLUSIVE, OF MISCELLANOUS MAPS, IN THE OFFICE OF THE COUNTY
RECORDER OF SAID COUNTY.
CONTAINING 1,375 SQUARE FEET, MORE OR LESS.
ALSO AS SHOWN ON EXHIBIT “B” ATTACHED HERETO AND BY THIS REFERENCE MADE A
PART HEREOF.
SUBJECT TO COVENANTS, CONDITIONS, RESTRICTIONS, RESERVATIONS, EASEMENTS,
RIGHTS, RIGHTS-OF-WAY AND OTHER MATTERS OF RECORD, IF ANY.
PREPARED BY: STANTEC
UNDER THE DIRECTION OF:
________________________
MINH A. LE, PLS NO. 8543
JANUARY 5, 2024
JN: 1840 31625
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San Bernardino CA 92408-3588
909-335-6116 stantec.com
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EXHIBIT “A”
TEMPORARY CONSTRUCTION EASEMENT (TCE)
APN: 415-061-08 & 09 AND 415-071-07
\\Us0383-ppfss01\184031625\07 Design\geomatics\submittals\LEGAL\APN415-061-071LGL Page 1 of 1
THOSE PORTIONS OF PARCELS 1, 2 AND 3 OF LOT LINE ADJUSTMENT LL 87-04, IN THE
CITY OF COSTA MESA, COUNTY OF ORANGE, STATE OF CALIFORNIA, RECORDED MAY 27,
1987 AS INSTRUMENT NO. 87-296844 OF OFFICIAL RECORDS, IN THE OFFICE OF THE
COUNTY RECORDER OF SAID COUNTY, DESCRIBED AS FOLLOWS:
A STRIP OF LAND, 3.00 FEET WIDE, THE NORTHERLY LINE OF SAID STRIP BEING
DESCRIBED AS FOLLOWS:
BEGINNING AT THE WESTERLY TERMINUS OF THE NORTHERLY LINE OF SAID PARCELS 1, 2
AND 3;
THENCE, ALONG SAID NORTHERLY LINE, SOUTH 89º37'29" EAST, 712.10 FEET.
THE SOUTHERLY LINE OF SAID STRIP SHALL BE EXTENDED OR SHORTENED TO BEGIN AT
THE NORTHWESTERLY LINE OF SAID PARCEL 1 OF LL 87-04.
CONTAINING 2,159 SQUARE FEET, MORE OR LESS.
ALSO AS SHOWN ON EXHIBIT “B” ATTACHED HERETO AND BY THIS REFERENCE MADE A
PART HEREOF.
SUBJECT TO COVENANTS, CONDITIONS, RESTRICTIONS, RESERVATIONS, EASEMENTS,
RIGHTS, RIGHTS-OF-WAY AND OTHER MATTERS OF RECORD, IF ANY.
PREPARED BY: STANTEC
UNDER THE DIRECTION OF:
________________________
MINH A. LE, PLS NO. 8543
JANUARY 5, 2024
JN: 1840 31625
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EXHIBIT “A”
TEMPORARY CONSTRUCTION EASEMENT (TCE)
APN: 415-091-01, 02 & 04
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THOSE PORTIONS OF LOTS 20 AND 45 OF TRACT NO. 10876, IN THE CITY OF COSTA
MESA, COUNTY OF ORANGE, STATE OF CALIFORNIA, PER MAP FILED IN BOOK 486, PAGES
1 THROUGH 8 OF MISCELLANEOUS MAPS, TOGETHER WITH PORTIONS OF PARCEL 1 OF LOT
LINE ADJUSTMENT 85-04, IN SAID CITY OF COSTA MESA, RECORDED SEPTEMBER 23,
1985 AS INSTRUMENT NO. 85-362761 OF OFFICIAL RECORDS, ALL IN THE OFFICE OF
THE COUNTY RECORDER OF SAID COUNTY, DESCRIBED AS FOLLOWS:
PARCEL 1:
BEGINNING AT THE SOUTHWEST CORNER OF SAID PARCEL 1 OF LOT LINE ADJUSTMENT
85-04;
THENCE, ALONG THE SOUTHERLY LINE OF SAID PARCEL 1, SOUTH 89°36'50" EAST,
15.00 FEET;
THENCE, LEAVING SAID SOUTHERLY LINE, NORTH 00°14'12" EAST 172.22 FEET;
THENCE, SOUTH 89°46'57" EAST, 125.85 FEET TO THE NORTHWESTERLY LINE OF A 14-
FOOT SEWER PIPELINE RECORDED MAY 23, 1923 IN BOOK 473, PAGE 143 OF DEEDS,
RECORDS OF SAID COUNTY;
THENCE, ALONG SAID NORTHWESTERLY LINE, NORTH 59°54'22" EAST 20.64 FEET TO THE
NORTHERLY LINE OF SAID PARCEL 1 OF LOT LINE ADJUSTMENT 85-04;
THENCE, ALONG SAID NORTHERLY LINE, SOUTH 89°36'50" EAST 150.21 FEET TO A
SOUTHEASTERLY CORNER OF SAID LOT 20;
THENCE, ALONG THE EASTERLY LINE OF SAID LOT 20, NORTH 00°23'10" EAST, 62.66
FEET;
THENCE, TRAVERSING THE INTERIOR OF SAID LOT 20, THE FOLLOWING COURSES:
NORTH 89°35'16" WEST, 36.44 FEET;
NORTH 00°02'09" EAST, 27.46 FEET;
WEST, 43.44 FEET;
SOUTH 00°04'04" WEST, 42.61 FEET;
SOUTH 02°58'08" WEST, 5.96 FEET TO SAID NORTHWESTERLY LINE OF THE 14-
FOOT SEWER PIPELINE RECORDED MAY 23, 1923 IN BOOK 473, PAGE 143 OF
DEEDS;
THENCE, ALONG SAID NORTHWESTERLY LINE, SOUTH 59°54'22" WEST, 17.31 FEET;
THENCE, TRAVERSING THE INTERIOR OF SAID LOT 20, THE FOLLOWING COURSES:
SOUTH 70°20'34" WEST, 26.54 FEET;
SOUTH 75°15'53" WEST, 22.49 FEET TO THE BEGINNING OF A CURVE CONCAVE
NORTHERLY HAVING A RADIUS OF 102.00 FEET;
WESTERLY 26.92 FEET ALONG SAID CURVE THROUGH A CENTRAL ANGLE OF
15°07'12";
NORTH 89°36'55" WEST, 34.38 FEET;
NORTH 00°23'05" EAST, 4.00 FEET;
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EXHIBIT “A”
TEMPORARY CONSTRUCTION EASEMENT (TCE)
APN: 415-091-01, 02 & 04
\\Us0383-ppfss01\184031625\07 Design\geomatics\submittals\LEGAL\APN415-091LGL Page 2 of 3
NORTH 89°37'02" WEST, 91.28 FEET;
NORTH 00°14'12" EAST, 265.34 FEET;
NORTH 85°58'39" WEST, 3.57 FEET;
NORTH 00°08'46" WEST, 19.61 FEET;
NORTH 21°48'02" WEST, 8.60 FEET TO THE NORTHWESTERLY LINE OF SAID LOT
20;
THENCE, ALONG SAID NORTHWESTERLY LINE OF SAID LOT 20, SOUTH 43°19'22" WEST,
11.83 FEET;
THENCE, ALONG THE WESTERLY LINES OF SAID LOT 20 AND SAID PARCEL 1 OF LOT LINE
ADJUSTMENT 85-04, SOUTH 00°14'12" WEST 485.53 FEET TO THE POINT OF BEGINNING.
EXCEPTING THEREFROM THOSE PORTIONS LYING WITHIN SAID 14-FOOT SEWER PIPELINE
RECORDED MAY 23, 1923 IN BOOK 473, PAGE 143 OF DEEDS AND WITHIN A 20-FOOT
SEWER EASEMENT RECORDED MARCH 27, 1980 IN BOOK 13550, PAGE 1040 OF OFFICIAL
RECORDS, ALL OF RECORDS OF SAID ORANGE COUNTY.
PARCEL 2:
THAT PORTION OF LOTS 20 AND 45 OF SAID TRACT NO. 10876 LYING NORTHERLY OF THE
FOLLOWING LINE:
BEGINNING AT A POINT ON THE NORTHWESTERLY LINE OF SAID LOT 20,
SOUTH 43°19'22" WEST, 13.87 FEET FROM THE MOST NORTHERLY NORTHWEST CORNER OF
SAID LOT 20;
THENCE, TRAVERSING THE INTERIOR OF SAID LOTS 20 AND 45, THE FOLLOWING
COURSES:
SOUTH 68°04'11" EAST, 8.24 FEET;
SOUTH 89°23'42" EAST, 19.89 FEET;
SOUTH 00°21'01" WEST, 1.73 FEET;
SOUTH 89°38'59" EAST, 468.46 FEET TO THE BEGINNING OF A CURVE CONCAVE
SOUTHERLY HAVING A RADIUS OF 551.00 FEET;
EASTERLY 68.01 FEET ALONG SAID CURVE THROUGH A CENTRAL ANGLE OF
07°04'20" TO THE BEGINNING OF A NON-TANGENT LINE AND TO WHICH A RADIAL
LINE BEARS NORTH 07º25'21" EAST;
ALONG SAID NON-TANGENT LINE, SOUTH 65°27'18" EAST, 11.95 FEET TO THE
BEGINNING OF A NON-TANGENT CURVE CONCAVE SOUTHERLY HAVING A RADIUS OF
547.60 FEET AND TO WHICH A RADIAL LINE BEARS NORTH 08°37'05" EAST;
EASTERLY 33.06 FEET ALONG SAID CURVE THROUGH A CENTRAL ANGLE OF
03°27'31";
SOUTH 77°55'24" EAST, 56.40 FEET;
SOUTH 12°04'36" WEST, 21.29 FEET;
SOUTH 77°51'22" EAST, 59.42 FEET;
NORTH 12°35'28" EAST, 21.36 FEET;
SOUTH 77°55'24" EAST, 65.89 FEET TO THE BEGINNING OF A CURVE CONCAVE
NORTHERLY HAVING A RADIUS OF 652.40 FEET;
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EXHIBIT “A”
TEMPORARY CONSTRUCTION EASEMENT (TCE)
APN: 415-091-01, 02 & 04
\\Us0383-ppfss01\184031625\07 Design\geomatics\submittals\LEGAL\APN415-091LGL Page 3 of 3
EASTERLY 57.86 FEET ALONG SAID CURVE THROUGH A CENTRAL ANGLE OF
05°04'54" TO THE BEGINNING OF A NON-TANGENT LINE AND TO WHICH A RADIAL
LINE BEARS SOUTH 06º59'42" WEST;
NORTH 82°38'59" EAST, 27.91 FEET;
NORTH 89°42'24" EAST, 14.78 FEET TO THE NORTHEASTERLY LINE OF SAID LOT
45.
PARCELS 1, 2 AND 3 CONTAIN A TOTAL AREA OF 28,786 SQUARE FEET.
ALSO AS SHOWN ON EXHIBIT “B” ATTACHED HERETO AND BY THIS REFERENCE MADE A
PART HEREOF.
SUBJECT TO COVENANTS, CONDITIONS, RESTRICTIONS, RESERVATIONS, EASEMENTS,
RIGHTS, RIGHTS-OF-WAY AND OTHER MATTERS OF RECORD, IF ANY.
PREPARED BY: STANTEC
UNDER THE DIRECTION OF:
________________________
MINH A. LE, PLS NO. 8543
JANUARY 18, 2024
JN: 1840 31625
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735 Carnegie Drive Suite 280
San Bernardino CA 92408-3588
909-335-6116 stantec.com
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EXHIBIT “A”
TEMPORARY CONSTRUCTION EASEMENT (TCE)
APN: 415-051-04
\\Us0383-ppfss01\184031625\07 Design\geomatics\submittals\LEGAL\APN415-051TCE-LGL Page 1 of 2
THOSE PORTIONS OF PARCEL 1 OF PARCEL MAP NO. 87-451, IN THE CITY OF COSTA
MESA, COUNTY OF ORANGE, STATE OF CALIFORNIA, PER MAP FILED IN BOOK 235, PAGES
31 AND 32 OF PARCEL MAPS, IN THE OFFICE OF THE COUNTY RECORDER OF SAID
COUNTY, DESCRIBED AS FOLLOWS:
PARCEL 2:
COMMENCING AT A POINT ON THE CERTAIN COURSE HAVING A BEARING AND DISTANCE OF
NORTH 88º46'40" EAST, 822.00 FEET ALONG THE SOUTHERLY BOUNDARY OF SAID PARCEL
1, DISTANT EASTERLY 239.50 FEET FROM THE WESTERLY TERMINUS OF SAID CERTAIN
COURSE;
THENCE, LEAVING SAID SOUTHERLY BOUNDARY, NORTH, 154.53 FEET TO THE POINT OF
BEGINNING;
THENCE, TRAVERSING THE INTERIOR OF SAID PARCEL 1, THE FOLLOWING COURSES:
NORTH 89°39'52" WEST, 68.61 FEET;
SOUTH 00°22'20" WEST, 23.52 FEET;
NORTH 89°48'35" WEST, 60.33 FEET;
NORTH 00°44'45" EAST, 31.69 FEET;
NORTH 08°54'07" WEST, 49.96 FEET;
SOUTH 89°52'55" EAST, 80.44 FEET;
SOUTH 01°12'39" WEST, 16.35 FEET;
SOUTH 89°49'29" EAST, 56.32 FEET;
SOUTH, 41.45 FEET TO THE POINT OF BEGINNING.
EXCEPTING THEREFROM THOSE PORTIONS LYING WITHIN SEWER EASEMENTS RECORDED MAY
23, 1923 IN BOOK 473, PAGE 143 OF DEEDS; JULY 20, 1954 IN BOOK 2781, PAGE
207; MARCH 27, 1980 IN BOOK 13550, PAGE 1933; MARCH 27, 1980 IN BOOK 13550,
PAGE 1940, ALL OF OFFICIAL RECORDS OF SAID ORANGE COUNTY.
PARCEL 3:
BEGINNING AT THE SOUTHEASTERLY CORNER OF PARCEL 2 OF A PARCEL MAP, IN SAID
CITY OF COSTA MESA, FILED IN BOOK 80, PAGES 13 THROUGH 15 OF PARCEL MAPS,
SAID CORNER ALSO BEING THE NORTHEASTERLY CORNER OF PARCEL 1 OF PARCEL MAP NO.
87-451 PER MAP FILED IN BOOK 235, PAGES 31 AND 32 OF PARCEL MAPS, ALL RECORDS
OF ORANGE COUNTY;
THENCE, ALONG THE EASTERLY LINE OF SAID PARCEL 1, SOUTH 00°22'13" WEST,
270.44 FEET;
THENCE, TRAVERSING THE INTERIOR OF SAID PARCEL 1, THE FOLLOWING COURSES:
SOUTH 48°02'45" WEST, 134.74 FEET;
SOUTH 00°58'33" WEST, 1.74 FEET TO THE SOUTHERLY LINE OF SAID PARCEL 1;
THENCE, ALONG SAID SOUTHERLY LINE, NORTH 89°37'29" WEST, 10.79 FEET;
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EXHIBIT “A”
TEMPORARY CONSTRUCTION EASEMENT (TCE)
APN: 415-051-04
\\Us0383-ppfss01\184031625\07 Design\geomatics\submittals\LEGAL\APN415-051TCE-LGL Page 2 of 2
THENCE, TRAVERSING THE INTERIOR OF SAID PARCEL 1, THE FOLLOWING COURSES:
NORTH 00°58'33" EAST, 12.30 FEET;
NORTH 48°02'45" EAST, 132.13 FEET;
NORTH 00°01'12" WEST, 222.46 FEET;
WEST, 11.36 FEET;
NORTH, 39.24 FEET;
SOUTH 89°39'44" EAST, 25.74 FEET TO THE POINT OF BEGINNING.
PARCELS 2 AND 3 CONTAIN A TOTAL AREA OF 12,583 SQUARE FEET, MORE OR LESS.
ALSO AS SHOWN ON EXHIBIT “B” ATTACHED HERETO AND BY THIS REFERENCE MADE A
PART HEREOF.
SUBJECT TO COVENANTS, CONDITIONS, RESTRICTIONS, RESERVATIONS, EASEMENTS,
RIGHTS, RIGHTS-OF-WAY AND OTHER MATTERS OF RECORD, IF ANY.
PREPARED BY: STANTEC
UNDER THE DIRECTION OF:
________________________
MINH A. LE, PLS NO. 8543
JANUARY 22, 2024
JN: 1840 31625
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735 Carnegie Drive Suite 280
San Bernardino CA 92408-3588
909-335-6116 stantec.com
DRA
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109464\19030586v2
EXHIBIT “C”
DEPICTION OF TEMPORARY CONSTRUCTION EASEMENT AREA
DRA
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POLEPOLE
35
SP
35
35
415-051-04
3.0
ORANGE COUNTY SANITATION DISTRICT PROJECT 1-23
RIGHT OF WAY EXHIBITS (DECEMBER 6, 2024)
OCSAN Existing Easement
Property Line/Right of Way
Work within OCSAN existing easement
Construction work area
Access for construction ingress/egress
LEGEND
HA
R
B
O
R
B
O
U
L
E
V
A
R
D
SCENIC AVENUE
415-041-09
APN 415-051-04
ADDRESS:3565 HARBOR BOULVARD, COSTA MESA, CA 92626
OWNER: C.J. SEGERSTROM AND SONS
BYPASS PIPE/PUMP SETUP, SEE OTHER SHEET FOR NEW MANHOLE
LANDSCAPE
415-051-04
SCENIC AV
E
N
U
E
HA
R
B
O
R
G
A
T
E
W
A
Y
N
270.0
136.0
EXISTING SEWER
MANHOLE
NOTES:
TOTAL AREA AND IMPACTS:
CONSTRUCTION WORK AREA: 2,098 S.F.
WORK WITHIN OC SAN EASEMENT: 0 S.F.
0 PARKING STALLS IMPACTED
DRA
F
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35
35
415-051-04
34.0
ORANGE COUNTY SANITATION DISTRICT PROJECT 1-23
RIGHT OF WAY EXHIBITS (DECEMBER 6, 2024)
OCSAN Existing Easement
Property Line/Right of Way
Work within OCSAN existing easement
Construction work area
Access for construction ingress/egress
LEGEND
SCENIC AVENUE
OC SAN
EASEMENT
APN 415-051-04
ADDRESS:3565 HARBOR BOULVARD, COSTA MESA, CA 92626
OWNER: C.J. SEGERSTROM AND SONS
NEW MANHOLE, SEE OTHER SHEET FOR BYPASS PIPE/PUMP SETUP
SAN0068-0000
NEW MANHOLE
57.4
85.3
415-071-07
TREES
CURB
NOTES:
TOTAL AREA AND IMPACTS:
CONSTRUCTION WORK AREA: 2,098 S.F.
WORK WITHIN OC SAN EASEMENT: 2,798 S.F.
20 PARKING STALLS IMPACTED
DRA
F
T
35
35
35
35
35
35
HA
R
B
O
R
B
L
V
D
SO
U
T
H
H
A
R
B
O
R
B
O
U
L
E
V
A
R
D
415-061-08
SCENIC AVE
3.0
86.0
ORANGE COUNTY SANITATION DISTRICT PROJECT 1-23
RIGHT OF WAY EXHIBITS (DECEMBER 6, 2024)
OCSAN Existing Easement
Property Line/Right of Way
Work within OCSAN existing easement
Construction work area
Access for construction ingress/egress
LEGEND
415-071-07
APN 415-061-08
ADDRESS: NO SITUS ADDRESS, COSTA MESA, CA (WEST OF HARBOR BLVD)
OWNER: C.J. SEGERSTROM AND SONS
BYPASS PIPE INSTALLATION
415-061-09
LANDSCAPE
NOTES:
TOTAL AREA AND IMPACTS:
CONSTRUCTION WORK AREA: 258 S.F.
WORK WITHIN OC SAN EASEMENT: 0 S.F.
0 PARKING STALLS IMPACTED
DRA
F
T
35
35
35
35
35
35
HA
R
B
O
R
B
L
V
D
SO
U
T
H
H
A
R
B
O
R
B
O
U
L
E
V
A
R
D
SCENIC AVE
415-061-09
121.0
ORANGE COUNTY SANITATION DISTRICT PROJECT 1-23
RIGHT OF WAY EXHIBITS (DECEMBER 6, 2024)
OCSAN Existing Easement
Property Line/Right of Way
Work within OCSAN existing easement
Construction work area
Access for construction ingress/egress
LEGEND
415-071-07
APN 415-061-09
ADDRESS: NO SITUS ADDRESS, COSTA MESA, CA (WEST OF HARBOR BLVD)
OWNER: C.J. SEGERSTROM AND SONS
BYPASS PIPE INSTALLATION
415-071-08
LANDSCAPE
NOTES:
TOTAL AREA AND IMPACTS:
CONSTRUCTION WORK AREA: 363 S.F.
WORK WITHIN OC SAN EASEMENT: 0 S.F.
0 PARKING STALLS IMPACTED
DRA
F
T
35
35
35
35
35
35
35
HA
R
B
O
R
G
A
T
E
W
A
Y
S
415-071-07
SCENIC AVENUE
415-051-04
ORANGE COUNTY SANITATION DISTRICT PROJECT 1-23
RIGHT OF WAY EXHIBITS (DECEMBER 6, 2024)
OCSAN Existing Easement
Property Line/Right of Way
Work within OCSAN existing easement
Construction work area
Access for construction ingress/egress
LEGEND
APN 415-071-07
ADDRESS: 1535 SCENIC AVENUE, COSTA MESA, CA 92626
OWNER: C.J. SEGERSTROM AND SONS
BYPASS PIPE INSTALLATION
LANDSCAPE
MAINTAIN
DRIVEWAY
ACCESS
LANDSCAPE
3.0
NOTES:
TOTAL AREA AND IMPACTS:
CONSTRUCTION WORK AREA: 1,548 S.F.
WORK WITHIN OC SAN EASEMENT: 0 S.F.
0 PARKING STALLS IMPACTED
DRA
F
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SP
35
35
35
35
35
35
35
35
SAN0065-0000
CIPP RECEIVING
HA
R
B
O
R
G
A
T
E
W
A
Y
S
415-091-04
SCENIC AVENUE
19.0
79.1
BU
S
I
N
E
S
S
P
A
R
K
D
R
I
V
E
15.0
ORANGE COUNTY SANITATION DISTRICT PROJECT 1-23
RIGHT OF WAY EXHIBITS (DECEMBER 6, 2024)
OCSAN Existing Easement
Property Line/Right of Way
Work within OCSAN existing easement
Construction work area
Access for construction ingress/egress
LEGEND
415-051-04
APN 415-091-04
ADDRESS: 1570 CORPORATE DRIVE, COSTA MESA, CA 92626
OWNER: C.J. SEGERSTROM AND SONS
CIPP RECEIVING AND BYPASS PIPE SETUP
LANDSCAPE AND
HARDSCAPE
BURIED PIPE
ACROSS DRIVEWAY
MAINTAIN ACCESS
34.0
NOTES:
TOTAL AREA AND IMPACTS:
CONSTRUCTION WORK AREA: 1,641 S.F.
WORK WITHIN OC SAN EASEMENT: 923 S.F.
0 PARKING STALLS IMPACTED
DRA
F
T
SP
35
35
35
35
35
35
35
35
SAN0060-0000
CIPP INSERTION
13.5
415-091-01
SCENIC AVENUE
34.0
415-091-02 415-091-03
3.0
3.0
3.0
ORANGE COUNTY SANITATION DISTRICT PROJECT 1-23
RIGHT OF WAY EXHIBITS (DECEMBER 6, 2024)
OCSAN Existing Easement
Property Line/Right of Way
Work within OCSAN existing easement
Construction work area
Access for construction ingress/egress
LEGEND
HY
L
A
N
D
A
V
E
N
U
E
63.0
304.0
36.044.0
45.0
APN 415-091-01
ADDRESS: 3560 HYLAND AVENUE, COSTA MESA, CA 92626
OWNER: C.J. SEGERSTROM AND SONS
CIPP INSERTION AND BYPASS PIPE/PUMP SETUP
LANDSCAPE
ADA RAMP
MAINTAIN
ACCESS
ADA RAMP
MAINTAIN
ACCESS
TREES AND
LANDSCAPE
CONCRETE SURFACE
NO WORK PERMITTED
MAINTAIN
DRIVEWAY
ACCESS
28.0
NOTES:
TOTAL AREA AND IMPACTS:
CONSTRUCTION WORK AREA: 8,195 S.F.
WORK WITHIN OC SAN EASEMENT: 3,842 S.F.
11 PARKING STALLS IMPACTED
DRA
F
T
SP
35
35
35
35
35
3535
HY
L
A
N
D
A
V
E
CORPORATE DR
SAN0060-0000
CIPP INSERTION
415-091-01
HY
L
A
N
D
A
V
E
N
U
E
126.0
415-091-02
34.0
ORANGE COUNTY SANITATION DISTRICT PROJECT 1-23
RIGHT OF WAY EXHIBITS (DECEMBER 6, 2024)
OCSAN Existing Easement
Property Line/Right of Way
Work within OCSAN existing easement
Construction work area
Access for construction ingress/egress
LEGEND
415-091-03
3.0
CORPORATE DRIVE
Coordinate with
Owner/Tenant
for loading dock
operation hours.
APN 415-091-02
ADDRESS: 1590 CORPORATE DRIVE, COSTA MESA, CA 92626
OWNER: C.J. SEGERSTROM AND SONS
CIPP INSERTION AND BYPASS PIPE/PUMP SETUP
BUILDING
ACCESS
OC SAN
EASEMENT
ACCESS FOR
DELIVERIES
LANDSCAPE
MAINTAIN
DRIVEWAY
ACCESS
NOTES:
TOTAL AREA AND IMPACTS:
CONSTRUCTION WORK AREA: 423 S.F.
WORK WITHIN OC SAN EASEMENT: 117 S.F.
0 PARKING STALLS IMPACTED
DRA
F
T
35
35
35
3535
35
METRO
A
V
E
CORPORATE DR
3.0
CORPORATE DRIVE
415-081-29
HY
L
A
N
D
A
V
E
N
U
E
415-091-02 415-091-03
ORANGE COUNTY SANITATION DISTRICT PROJECT 1-23
RIGHT OF WAY EXHIBITS (DECEMBER 6, 2024)
OCSAN Existing Easement
Property Line/Right of Way
Work within OCSAN existing easement
Construction work area
Access for construction ingress/egress
LEGEND
NOTES:
415-081-21
415-081-30
415-081-31
415-081-24
415-081-25 415-081-26
APN 415-081-21
ADDRESS: NO SITUS ADDRESS, COSTA MESA, CA (EAST OF HYLAND AVENUE)
OWNER: C.J. SEGERSTROM AND SONS
BYPASS PIPE INSTALLATION
LANDSCAPE
MAINTAIN
DRIVEWAY
ACCESS
NOTES:
TOTAL AREA AND IMPACTS:
CONSTRUCTION WORK AREA: 1,303 S.F.
WORK WITHIN OC SAN EASEMENT: 0 S.F.
0 PARKING STALLS IMPACTED
DRA
F
T
35
HYL
A
N
D
A
V
E
METRO
A
V
E
3030
3.0
415-081-25
HY
L
A
N
D
A
V
E
N
U
E
415-081-26
ORANGE COUNTY SANITATION DISTRICT PROJECT 1-23
RIGHT OF WAY EXHIBITS (DECEMBER 6, 2024)
OCSAN Existing Easement
Property Line/Right of Way
Work within OCSAN existing easement
Construction work area
Access for construction ingress/egress
LEGEND
NOTES:
415-081-24
APN 415-081-25
ADDRESS: 3500 HYLAND AVENUE, COSTA MESA, CA 92626
OWNER: C.J.SEGERSTROM AND SONS
BYPASS PIPE INSTALLATION
LANDSCAPE
MAINTAIN
DRIVEWAY
ACCESS
NOTES:
TOTAL AREA AND IMPACTS:
CONSTRUCTION WORK AREA: 1,657 S.F.
WORK WITHIN OC SAN EASEMENT: 0 S.F.
0 PARKING STALLS IMPACTED
DRA
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109464\19030586v2
CERTIFICATE OF ACCEPTANCE
(Government Code Section 27281)
This is to certify that the interest in real property conveyed by the GRANT OF TEMPORARY
CONSTRUCTION EASEMENT dated ____________________, 20____, from C.J. Segerstrom & Sons,
a California general partnership, to the undersigned Orange County Sanitation District, a California special
district (“GRANTEE”), by the within instrument, the provisions of which instrument are incorporated by
this reference as though fully set forth in this Certificate, is hereby accepted by the undersigned
officer/agent on behalf of the GRANTEE’s Board of Directors, pursuant to Orange County Sanitation
District Resolution No. OC SAN 25-09 and OCSD 98-15; and the GRANTEE consents to recordation
thereof by its duly authorized officer.
By:
Kelly A. Lore, MMC
Clerk of the Board
Dated:
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109464\18502580v6
EXHIBIT 3 TO
PURCHASE AND SALE AGREEMENT
AND JOINT ESCROW INSTRUCTIONS
Purchase Price Breakdown
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Project 1-23: CJ. Segerstrom & Sons Temporary Construction Easements
Summary of Properties
DRA
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109464\18502580v6
EXHIBIT 4 TO
PURCHASE AND SALE AGREEMENT
AND JOINT ESCROW INSTRUCTIONS
Entry, Possession, and Use Provisions
Following the successful Closing, including without limitation, the recordation of the completed
TCE Deed and Seller’s receipt of the Purchase Price, the following, without limitation to the other
requirements of the Agreement and TCE Deed, shall apply:
A. Use of the TCE. Buyer shall have the right to enter upon and use the Temporary
Construction Easement Areas described in the Agreement solely for performing the following
activities during the TCE Term (the “Permitted Activities”):
1. APN 415-051-04
- Installation of temporary sewer bypass pipe
- Installation of new sewer manhole over existing trunk sewer
2. APN 415-061-08
- Installation of temporary sewer bypass pipe
3. APN 415-061-09
- Installation of temporary sewer bypass pipe
4. APN 415-071-07
- Installation of temporary sewer bypass pipe
5. APN 415-081-21
- Installation of temporary sewer bypass pipe
6. APN 415-081-25
- Installation of temporary sewer bypass pipe
7. APN 415-091-01
- Installation of temporary sewer bypass pipe
- Installation and operation of temporary bypass pump and associated
equipment
- Installation of sewer liner through existing manhole
8. APN 415-091-02
- Installation of temporary sewer bypass pipe
9. APN 415-091-04
- Installation of temporary sewer bypass pipe
- Installation and operation of temporary bypass pump and associated
equipment
- Installation of sewer liner through existing manhole
All Permitted Activities shall be performed in accordance with the site plan attached hereto as
Exhibit 4-1 (“Site Plan”), including without limitation, the location of all temporary pumps,
temporary bypass piping lines, and Restricted Construction Zone (as defined in Exhibit 6).
B. No Cost to Seller. Buyer shall bear all costs and expenses in connection with
Buyer’s use of the Temporary Construction Easement Areas.
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109464\18502580v6
C. Parties’ Intent to Be Bound. Seller acknowledges and agrees that it is important for
Buyer to have assurances that the Project may be constructed in a timely manner, and that the
rights granted to Buyer in this Agreement are crucial to the Project’s success. In the event of any
dispute concerning the Buyer’s right of entry, possession and use set forth above in this Agreement,
the Parties agree that monetary damages will not be adequate to make them whole, and intend for
the terms of such right of entry, possession, and use provisions to be specifically enforceable.
D. Construction, Operation, Maintenance. The Parties acknowledge and agree that
Seller shall have no responsibility or liability for, design, construction, operation, use, and/or
maintenance of the Permitted Activities or Project, prior to, during, or after completion of the
Permitted Activities. Buyer, at no cost to Seller, shall be responsible for the means and methods of
executing the Project in accordance with this Agreement.
E. Phasing, Scheduling, and Coordination.
1. As soon as reasonably possible, but not less than sixty (60) calendar days
prior to the Buyer’s commencement of any Permitted Activities on the Property, Buyer shall
provide for Seller’s approval, which approval shall not be unreasonably withheld, a detailed
phasing plan regarding the schedule, phasing, dates, and durations of the Permitted Activities
(“Phasing Plan”). The Phasing Plan shall be developed in accordance with the requirements of
this Agreement, including without limitation, the Site Plan and Special Provisions set forth in
Exhibit 6. The Parties acknowledge and agree that the Phasing Plan may require reasonable
modifications to address Buyer’s Project needs and Seller’s Property needs, and that the Parties
shall use good faith efforts to agree upon any required modifications to the Phasing Plan.
2. Buyer shall provide fifteen (15) business days prior written notice to Seller,
prior to commencement of each phase (“Phase”) of the Permitted Activities described in the
Phasing Plan.
F. Insurance. Buyer shall maintain, and shall cause its separate contractors to procure
and maintain the insurance, and Buyer shall comply with all requirements, set forth in EXHIBIT
4-2, attached hereto. Seller shall have no obligation to insure any portion of the Project, or any
liabilities or risks arising out of or related in any way to, the Project, the TCE, or any Buyer Parties.
G. Operational Facilities and Tenants. Buyer acknowledges and agrees that the
structures and improvements on the Property are and shall continue to be occupied by tenants of
Seller, and, subject to the Permitted Construction Impacts (defined below), such tenants shall be
permitted the continued use and enjoyment of their respective leased facilities in accordance with
their respective lease agreements. Subject to the Permitted Construction Impacts, the Purchase
Price does not include, and Buyer is not permitted to allow, any activities or disruption on or to the
Property that would impair, prevent, or disturb the ongoing operations of, and use of the Property
by, the present and future tenants of the Property. The parties acknowledge and agree that the
Permitted Activities, performed in accordance with this Agreement, will include certain necessary
and unavoidable construction noise and dust, temporary facilities and fencing off of areas to the
extent described in the Site Plan, and the presence of construction personnel and equipment on the
Property during permitted hours of the Buyer’s work (“Permitted Construction Impacts”). From
6:00am through 8:00pm Sunday through Saturday, Buyer shall not park vehicles or store materials
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or equipment on the Property, with the manhole construction within of APN 415-051-04. All
storage of equipment and vehicles in APN 415-051-04 will be limited to within the fenced area
defined herein.
H. Mitigation of Impacts to Tenants. Upon Seller’s receipt of any tenant complaint
asserting that the Project or Buyer’s acts or omissions on or adjacent to the Property are impacting
the tenants reasonable use of the tenant’s leased space and associated common areas, including
without limitation, any complaint by the tenant alleging that such disturbance may contribute to a
termination or non-renewal of the tenant’s lease, Seller shall promptly provide Buyer with written
notice of the same, unless Seller determines, in its reasonable discretion, that the matter can be
resolved with the tenant without Buyer’s involvement. Following Buyer’s receipt of Seller’s
notice of the tenant complaint, Buyer and Seller shall meet and confer to determine Buyer’s
appropriate acts to be taken to eliminate, reduce and/or mitigate the disturbance to the tenant, in a
manner reasonably acceptable to Seller and the applicable tenant.
I. Property Rules, Noise, Dust, Odor. The Permitted Activities shall be subject to all
reasonable property construction rules and requirements applicable to the areas in which the
Permitted Activities will be performed. Without limitation to Exhibit 6 to the Agreement, Buyer
Parties’ use of the Temporary Construction Easement Area shall not produce, and the Permitted
Construction Impacts shall not include, unreasonable levels of noise, dust, or odor, that may
prohibit the standard operations and uses of the Property facilities, including without limitation,
the Seller’s ability to lease any vacated existing facilities thereon.
J. Repairs and Restoration. Buyer shall be responsible for promptly repairing or
replacing any damaged or destroyed portions of the Property, resulting from the acts or omissions
of any Buyer Parties. Notwithstanding anything contained herein to the contrary, the Buyer shall
be responsible for the complete restoration and repair of any displaced, destroyed, or damaged
portions of the Property, including without limitation, any landscaping, hardscaping, facilities,
buildings, utilities, and/or other improvements or property, on the Property. Such restoration and
repair shall include installation of functionally and aesthetically equivalent materials and
equipment, as necessary to restore the Property to the condition that existed prior to
commencement of the Permitted Activities or Buyer Parties’ use of the Property. Such restoration
and repair shall occur on the earlier of, termination of this Agreement, the end of the TCE Term,
the completion of the Permitted Activities, or as otherwise expressly required in this Agreement.
K. Utilities. Neither Buyer Parties nor the Permitted Activities shall stop, suspend, or
limit the utilities and services to the Property, except as expressly permitted Exhibit 6 to the
Agreement and required for the proper performance of the Project. In the event of any unavoidable
disruption to the utilities or services to or on the Property, Buyer shall provide Seller with at least
fifteen (15) business days prior written notice of such disruption (and the length thereof). In the
event Seller objects to such disruption, the parties shall meet and confer in good faith to determine
an appropriate mutually agreeable solution.
L. Indemnity. To the fullest extent permitted by law, Buyer shall indemnity, defend
and hold harmless, the Seller and its lenders, tenants, directors, officers, employees, principals,
partners, trustees, members and managers (collectively referred to as “Indemnitees”) from and
against any claim, demand, liability, loss, damage, lien, stop payment notice, cost, expense,
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including attorneys’ fees, awards, penalties, fines, or judgments (collectively “Liabilities”) arising
out of the Project, Permitted Activities, or Buyer Parties use of the Temporary Construction
Easement Area. This indemnity shall survive the expiration or termination of this Agreement and
shall remain in effect until such time as an action on account of any matter covered by such
indemnity is barred by applicable statute of limitations.
M. Liens. Buyer shall ensure the Property remains free and clear of any liens, stop
payments notices, or claim or encumbrance on the Property arising out of or related to the Project
or any Buyer Parties’ use of the Temporary Construction Easement Area. Upon Buyer’s receipt of
notice of such a lien, stop payment notice, or other claim or encumbrance, for payment, the Buyer
shall notify the Seller of the same, and remove the same within fifteen (15) calendar days.
N. Laws. Buyer shall ensure that all Permitted Activities and Buyer Parties’ use of the
Temporary Construction Easement Area comply with all applicable Federal, State, and local laws,
statutes, ordinances, codes, rules, orders, regulations, and requirements of governmental entities.
O. Safety. Buyer and Buyer Parties shall be responsible for all safety requirements
and best practices in connection with this Agreement, the Project, and/or TCE Deed, including
without limitation, all safety laws and regulations related to roads and other areas of public access
affected by the Project, as well as all applicable fencing, signage, security training and surveillance,
safety equipment, and permit requirements.
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Exhibit 4-1
Site Plan
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Exhibit __
Page 4 of 4
Keynote Schedule
Symbol Description
A Manhole installation area + CIPP insertion location
B Bypass line pump area (2 parking spaces)
C CIPP insertion location @ existing manhole
D Existing manhole with accompanying bypass line pump
E Bypass line to run beneath pedestrian sidewalk
F Bypass line to run behind existing monument sign on building side
G Bypass line to run in front of existing planter wall on road-side
1 Bypass line to be placed as close as possible to the east side of existing
landscape shrubs
2 Bypass line to be buried in existing lawn area at dashed lines and shall
be covered by artificial turf until natural turf is restored at conclusion of
project
3 Bypass line to be buried beneath asphalt road surface
4 Bypass line to be placed as close as possible to the existing landscape
shrubs on the road-side
5 Bypass line to be placed in the middle of landscape setback area to hide
from view as much as possible
6 Bypass line to be placed as close as possible to the concrete light well
at base of monument sign on the road-side at corner
7 Bypass line to be placed as close as possible to base of the landscape
shrubs at top of slope on the road-side
8 Bypass line to be placed at base of trees on building side to minimize
view from buildings
9 Bypass line to go under sidewalk, curb, and gutter to connect to existing
sewer in roadway intersection
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Exhibit 4-2
Insurance Requirements
Buyer and each of its contractors shall procure and continuously maintain, with insurers lawfully
permitted to do business in California, at least the following coverages, from commencement of
the work and services on the Property until the expiration of applicable statutes of limitation and
repose.
Insurance Coverage Summary: Policy Limits Summary:
Workers’ Compensation California required limits Statutory
Employer’s Liability Injury by accident or disease: $1,000,000
Commercial general liability, with no
deductible or self-insured retention limits
Each Occurrence: $5,000,000
General Aggregate: $10,000,000
Pollution/Contractor’s Pollution Liability Each Occurrence $2,000,000
Aggregate $2,000,000
Business auto liability, with no deductible
or self-insured retention limits
Per accident/aggregate: $2,000,000
1. Workers’ Compensation and Employer’s Liability Insurance. Workers’
compensation insurance in accordance with applicable law, and employer’s liability insurance with
limits not less than $1,000,000 per bodily injury by accident and disease. Such policies shall
contain a waiver of subrogation in favor of the Seller, its tenants and other parties as may
reasonably be designated by Seller (collectively, “Seller Parties”).
2. Commercial General Liability Insurance. Commercial general liability (“CGL”)
insurance, written on an occurrence policy form at least as broad as ISO form CG 00 01 04 13,
providing coverage for bodily injury, property damage, personal injury and advertising injury,
including independent contractors, premises-operations (including, without limitation, explosion,
collapse and underground coverage) and products-completed operations coverages, with limits of
not less than $5,000,000 per occurrence limit and $10,000,000 general aggregate limit, or limits
carried, whichever are greater. The CGL policy shall include, without limitation, severability of
interests (full separation of insureds) without “cross-suits” exclusions, contractual liability
coverage, broad form property damage coverage (including completed operations), coverage for
earth movement and subsidence (no form of earth movement or subsidence exclusion or
limitation), waiver of insurer’s rights of recovery (including, without limitation, subrogation)
against Seller Parties, and a duty to defend in addition to (without reducing) the limits of the
policies. Seller Parties shall be named as additional insured on the CGL policies, including
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coverage for both ongoing and completed operations, on forms reasonably acceptable to Seller.
CGL policies shall be primary to any other applicable insurance.
3. Automobile Liability Insurance. Commercial or business automobile liability
insurance, including, without limitation, liability arising out of “any auto” or all owned, non-
owned, leased, and hired automobiles, trucks and trailers, or semi-trailers, including, but not
limited to, any machinery or apparatus attached thereto, with limits required of subcontractor of
not less than $2,000,000 each accident, or limits carried, whichever are greater. The commercial
automobile liability insurance shall be written on the most recent edition of ISO form CA 00 01
or equivalent and shall include, without limitation, additional insured status for Seller Parties. If
any Buyer Party transports any hazardous materials, the automobile liability policy shall include
ISO endorsement forms MCS-90 and ISO CA 99 48 or equivalent endorsements providing
coverage for environmental and pollution claims. Buyer waives all rights against Seller Parties
for recovery of loss, injury and/or damages to the extent such loss, injury and/or damages are
covered by the commercial automobile liability insurance maintained by any Buyer Parties.
4. Professional Liability Insurance. District’s design-build contractors, architects,
engineers, and professional consultants for the Permitted Activities shall procure and maintain
professional liability insurance, with limits reasonably acceptable to Seller.
5. Contractors Pollution Liability Insurance. District and its contractors shall
procure and maintain contractors pollution liability (“CPL”) insurance covering claims and suits
due to pollution conditions or incidents arising out of the Project, with limits of not less than
$2,000,000 per occurrence and $2,000,000 annual aggregate. Seller Parties shall be named as
additional insureds on such policies.
6. Primary Coverage. All insurance required herein shall be primary and non-
contributory insurance, and shall not seek contribution from any insurance maintained by or
available to the Seller Parties, which latter insurance shall be excess, including, but not limited
to, with respect to all applicable deductibles and self-insured retentions.
7. Insurance Documents. Prior to entry onto the Property and commencement of the
Permitted Activities, Buyer shall deliver to Seller certificates of insurance and additional insured
endorsements (naming the Seller as an additional insured), evidencing satisfaction of the
insurance requirements herein. In the event of any claim or dispute potentially involving any
such insurance, Buyer shall promptly provide copies of such policies to the Seller.
8. Risk of Loss. Buyer and Buyer parties shall hold and maintain all risk of loss
associated with the Project and/or TCE, including without limitation, all risks to be addressed by
insurance described above, as well as all other risk of loss as to all materials, supplies, equipment
and/or fixtures. Seller shall not be liable for Buyer Parties’ injury, loss or damage to, or theft of,
any property, person, materials, supplies, equipment and/or fixtures.
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EXHIBIT 5 TO
PURCHASE AND SALE AGREEMENT
AND JOINT ESCROW INSTRUCTIONS
District Board Certification Form
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CERTIFICATE OF ACCEPTANCE
(Government Code Section 27281)
This is to certify that the interest in real property conveyed by the TEMPORARY
CONSTRUCTION EASEMENT DEED dated _______________________, from CJ
Segerstrom & Sons, a California general partnership, to the undersigned Orange
County Sanitation District, a California special district (“GRANTEE”), by the within
instrument, the provisions of which instrument are incorporated by this reference as though
fully set forth in this Certificate, is hereby accepted by order of the Board of Directors of
the Orange County Sanitation District, pursuant to the authority conferred by the Board of
Directors of the Orange County Sanitation District, by Resolution No. OCSD 98-15, on
July 1, 1998, and the Orange County Sanitation District consents to the recordation thereof
by its duly authorized officer.
APN: 415-051-04, 415-061-08, 415-061-09, 415-071-07, 415-081-21, 415-081-25, 415-091-01, 415-091-02,
415-091-04
By:
Kelly A. Lore
Clerk of the Board
Date:
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EXHIBIT 6 TO
PURCHASE AND SALE AGREEMENT
AND JOINT ESCROW INSTRUCTIONS
Special Provisions
The following special provisions apply to all parcels included in this Agreement. The District
shall be responsible for ensuring all use of, and all work and services on or otherwise affecting,
the Property in connection with the District’s Project or the TCE, satisfies the requirements set
forth in, or reasonably inferable from, this Agreement, including without limitation, this Exhibit
6:
A. General Requirements for all Permitted Activities:
1. Noise-Generating Construction Work
Unless explicitly stated otherwise in these special provisions (including as set
forth in the Special Construction Restrictions section below), all noise-generating
construction activities shall be conducted during “Nighttime Hours” only.
“Nighttime Hours” are defined as 8:00 PM to 6:00 AM, and such activities may
be performed up to seven (7) days per week.
2. Pavement and Landscaping Restoration
The restoration of pavement and landscaping at the facility shall be completed no
later than ninety (90) days following the completion of construction activities in
each of the designated work area described in the Site Plan attached to Exhibit 4
to this Agreement.
3. Temporary Bypass Piping
Temporary bypass piping will be installed near the perimeter of the Property as
indicated in the Site Plan in Exhibit 4-1 to this Agreement. All piping will be
buried across driveways to allow for day-time access to all parking lots. The
temporary bypass piping will be placed and be online for up to, but not more than,
9 months. The bypass pumping equipment shall be located at the pump locations
designated on the Site Plan. Except as expressly permitted in the Site Plan, no
bypass pumping equipment will be located within 100-ft of the 1570 Scenic Ave.
property. The bypass pumping equipment to be located on the south side of
Scenic Avenue, directly across from 1570 Scenic Ave., and shall be shut-off
during the period commencing Friday at 3:00pm and ending Sunday 11:59pm
each week. Buyer will not be permitted to access areas outside of the limits
identified in this Agreement for the installation of bypass pumping equipment. All
pumps associated with the bypass sewer line shall be enclosed in a sound-
proofing shroud to minimize the noise emanating from the pumps.
4. Cured-in-place (CIPP) Installation
During CIPP installation, a continuous 58-hour construction period is required
(the “CIPP Period”). Noise generating construction activities will occur
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throughout the CIPP Period. The anticipated schedule for CIPP Period work is as
follows:
Day 1: Start at 8pm (-4 hours of work)
Day 2: Constant work (24 hours of work)
Day 3: Constant work (24 hours of work)
Day 4: End by 6am (6 hours of work)
5. Special Construction Restrictions. Except for the CIPP installation work, all
construction activities conducted within the “Restricted Construction Zone,” as
depicted on the attached Exhibit 6-1, attached hereto, shall be conducted during
Nighttime Hours and shall be subject to the following restrictions:
(a) All construction work shall be performed during the period commencing
on Sunday evening at midnight and shall be concluded by no later than
Thursday morning at 6:00AM (the “Construction Period”).
(b) All CIPP installation work shall be conducted during the Construction
Period, but due to the required continuous nature thereof, may be
conducted all hours of the day and not restricted to Nighttime hours.
(c) All work associated with the installation of a new manhole in the parking
lot directly adjacent to and south of the building located at 1540 Scenic
Avenue, Costa Mesa, shall be conducted within a fenced and screened
area identified as the “Manhole Installation Area” on the attached Exhibit
6-2. Such fencing shall be no less than 7’ high, shall include a green
screen mesh to block visibility into the Manhole Installation Area. The
total size of the Manhole Installation Area shall not exceed 57.4 ft. (north
to south) by 85.3 ft. (east to west). The Manhole Installation Area shall
not extend further east than the most westerly corner of the building near
the east entry to the building and shall not extend further south than the
northerly edge of the landscape planter at the southern edge of the parking
drive aisle closest to the building. Buyer shall be responsible for all
required traffic routing and rerouting requirements, including without
limitation, any necessary permits, barricades, and safety requirements.
B. Parcel Specific Requirements:
1. The following special provisions apply to work within APN 415-051-04
a. Temporary Bypass Piping
The temporary bypass piping will be placed and be online for up to 9
months.
b. Cured-in-place-pipe (CIPP) Installation
Two (2) independent CIPP Installations are anticipated as part of this
Agreement.
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The Buyer will provide a minimum of 14-days notice prior to CIPP
installation activities.
CIPP Installation can occur over a weekend, except for work in the
Restricted Construction Zone, which shall be conducted during the
Construction Period, only.
c. Construction of New Manhole
The construction of a new manhole in the parking lot located south of
1550 Scenic Avenue shall be completed within a single continuous period
of three (3) months. The Buyer shall provide the Seller with a minimum of
thirty (30) days’ written notice prior to the commencement of the
proposed three-month construction period. During such construction, all
noise-generating activities shall be restricted to the Construction Period.
The Buyer shall secure the site with chain-link fencing during daytime
hours. Access to the site will be restricted, and it shall not be available for
use by the Seller during the three-month construction period.
2. The following special provisions apply to work within APN 415-091-01, 415-
091-02, and 415-091-04
a. Noise Generating Construction Work
During the hours where Buyer is not performing any construction or
Project work, the construction area will be restored with recessed steel
plates to allow for vehicle access to loading docks, parking lots, parking
lot drive aisles, and walkways within the property. Parking stalls impacted
by the proposed area will not be restored daily.
b. Temporary Bypass Piping
The temporary bypass piping will be placed and be online for up to 9
months.
c. Cured-in-place (CIPP) Installation
Two (2) independent CIPP Installations are anticipated as part of this
Agreement.
The Buyer will provide a minimum of 14-days notice prior to CIPP
installation activities.
CIPP Installation can occur over a weekend, except for work in the
Restricted Construction Zone, which shall be conducted during the
Construction Period, only.
d. Temporary Bypass Pumping
Construction activities for CIPP installation will require temporary bypass
pumping of sewer laterals entering into the existing manholes. Temporary
bypass pumps will be placed within parking stalls within the limits of the
work area requested as part of this Agreement. During bypass pumping
operation, the Buyer will require constant 24 hours per day access to the
pump for maintenance.
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Exhibit 6-1
Restricted Construction Zone
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Restricted
Construction
Zone
Manhole
Installation
Zone
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Exhibit 6-2
Manhole Installation Area
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IE 19.40
IE 19.80DIA. 48''
SLOPE 0.00066
DIA. 48''
SLOPE 0.00032
EXISTING SURFACE OVER ℄ OF PIPE
STA 41+29
SAN 0065-0000
RIM = 34.72
IE = 19.49
STA 41+27
IE = 19.49
STA 41+32 IE = 19.62
STA 45+44
IE = 19.62
STA 45+49
STA 45+46
SAN 0068-0000
RIM = 38.00
NEW 84-IN DIA MH
CIPP INSERTION MH
CIPP RECEIVING MH
IE = 20.67
EX 8-IN SEWER
LATERAL
40+00 41+00 42+00 43+00 44+00 45+00 46+00 47+00 48+00 49+00 50+00
3SAN 0065-0000
STA 41+29
CIPP RECEIVING MH
APN 415-051-04
C.J. SEGERSTROM & SONS
APN 415-051-04
C.J. SEGERSTROM & SONS
APN 415-091-04
C.J. SEGERSTROM & SONS
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N: 2202112.6676 N: 2202321.7493
E: 6052765.9130 E: 6053126.6936
CITY OF COSTA MESA
NEW 84-IN DIA
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4-0065-1
5-0065-1
(E) WALL
APN 415-051-04
C.J. SEGERSTROM & SONS
APN 415-051-04
C.J. SEGERSTROM & SONS
APN 415-091-04
C.J. SEGERSTROM & SONS
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BYPASS PHASE 4 & 5
(E) TURF
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(E) TREE
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ENTRANCE
(E) ELECTRICAL AREA
(E) CURB
(E) CURB
(E) CURB
(E) CURB
(E) TREE
25
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CITY OF COSTA MESA
(E) ELECTRICAL LINE
(E) WATER LINE
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(E) 8-IN SEWER LATERAL
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PROFILE
SEGMENT 26
CIPP 554 LF
A
1 2 3 4 5 6 7 8 9 10
B
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MARK DATE APPR.DESCRIPTION
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SHEET NO.
162OF(IF NOT 2"-SCALE ACCORDINGLY)
AT FULL SIZE
LINE IS 2 INCHES
DESIGNED BY:
DRAWN BY:
CHECKED BY:
SANTA ANA TRUNK SEWER REHABILITATION 1-23
ORANGE COUNTY SANITATION DISTRICT
FDS
04/25/2025
NOT FOR
CONSTRUCTION
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STA. 40+00 TO STA. 50+00
TRUNK SEWER PLAN AND PROFILE
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SEGMENT 27
CIPP 525 LF
SEGMENT 26A
CIPP 411 LF
LINE/CURVE DATA TABLE
NO.
L7
L8
L9
BEARING/DELTA
N59°58'11"E
N59°54'24"E
N59°54'24"E
RADIUS
--
--
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LENGTH
529.82
416.99
560.25
TANGENT
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KEY NOTES
EX OC SAN SEWER
LEGEND
BYPASS PHASE 4
BYPASS PHASE 5
SANTA ANA TRUNK SEWER
BYPASS PHASE 1
BYPASS PHASE 2
BYPASS PHASE 3
3
4
PROVIDE A 30' DIAMETER EXCLUSION ZONE AT
MANHOLE. UTILIZE A 10-FOOT TALL EXHAUST STACK
AT THE RECEIVING MANHOLE WHEN CURING WITH
STEAM. REFER TO SPECIFICATION 02531 FOR
ADDITIONAL INFORMATION.
PROPOSED WORK AREA LIMITS FOR PRIVATE
PROPERTY.
5 REFER TO SHEET 2G6001 FOR MH REHABILITATION
REQUIREMENTS FOR CIPP INSERTION MANHOLES.
PROVIDE TEMPORARY STEEL PLATE OVER MH
OPENING DURING NON-WORK HOURS WHEN COVER
IS NOT REPLACED.
8 INSTALL TEMPORARY MANHOLE.
FIELD COORDINATE ACTUAL LOCATION.
9 MONITOR CLEANOUT/MANHOLE UPSTREAM OF
BYPASS SUCTION MANHOLE.
12 CONSTRUCTION ACCESS ROUTE. (NON-EXCLUSIVE)
6 INSTALL NEW PERMANENT 84-INCH MANHOLE PER
DETAIL S-050B ON SHEET 2C5001. REFER TO SHEET
2G6001 FOR REQUIREMENTS.
13 BYPASS PUMP SETUP AREA.
19 POTHOLE AT TEMPORARY MH TO IDENTIFY SITE
CONSTRAINTS. IF TEMPORARY MH IS NOT FEASIBLE
DUE TO SITE CONSTRAINTS, SUBMIT ALTERNATE
BYPASS DESIGN OF LATERAL FLOWS DISCHARGING
TO MH SAN0065-0000 WITHIN TEMPORARY HANDLING
OF FLOW PLAN FOR OC SAN REVIEW.
*TWO WORKING DAYS BEFORE YOU DIG*
422-4133
Service Alertof Southern California
Call: TOLL FREE
1-800
groundUnder
CALL BEFORE YOU DIG
VICINITY MAP
N.T.S
ALTON AVENUE
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MATCHLINE - SEE SHEET 1C1018 - FOR
CONTINUATION OF BYPASS
MATCHLINE - SEE SHEET 1C1017 - FOR CONTINUATION OF BYPASS
THIS PLAN SET IS
INTENDED TO BE VIEWED
AND PRINTED IN COLOR
PLAN - EXISTING & BYPASS FACILITIES
21
MANHOLE
CONSTRUCTION
AREA
MANHOLE
CONSTRUCTION
AREA
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109464\18502580v6
EXHIBIT 7 TO
PURCHASE AND SALE AGREEMENT
AND JOINT ESCROW INSTRUCTIONS
Severance Damages
1. General. The Parties acknowledge and agree that the Project and the Buyer’s
acts and use of the Property and adjacent areas may result in Severance Damages to the Seller,
and that the Purchase Price does not include any compensation for potential Severance Damages.
In order to avoid an upfront payment by Buyer for potential Severance Damages, and in order to
protect the Seller from realized Severance Damages, the Parties desire to establish the Severance
Escrow, tender the Severance Damage Fund to the Severance Escrow, and cause distribution of
Severance Payments to the Seller in the manner described herein. The Parties shall execute such
further documentation as may be required to facilitate the intent of this Exhibit 7, including any
further agreement with the Severance Escrow to establish the Severance Escrow, fund the
Severance Damage Fund, and permit timely disbursement of Severance Payments to Seller.
2. Potentially Impacted Tenants. Seller’s right to Severance Payments shall apply
to the Severance Damages related to the following Seller tenants (including their lawful
successors and assigns to their leasehold interests under the tenant’s lease with Seller) and
properties:
This document sets forth the procedures to be followed for disbursement of Severance Payments
to Seller in the event of Severance Damage in connection with one of the above tenants or
properties.
3. Severance Escrow Holding. Buyer shall deposit into the separate Severance
Escrow the Severance Damage Fund amount of ONE MILLION NINE THOUSAND TWO
HUNDRED SEVENTY DOLLARS ($1,009,270). This amount has been calculated as the
aggregate of potential Severance Damages applicable to the above tenants.
DRA
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109464\18502580v6
4. Seller’s Severance Payment Draw Request.
a. In the event the Seller incurs Severance Damages applicable to one or
more of the above tenants or properties, Seller shall issue a Severance Payment draw request
(“Severance Payment Draw Request”) to the Severance Escrow and Buyer.
b. The Severance Payment Draw Request shall include reasonable evidence
that the Buyer’s Project or other acts or omission on or adjacent to the Property, contributed to
the tenant(s) terminating its lease or electing not to renew its lease at the fair market value of the
applicable leased portion of the Property (which fair market value determination shall not
include any depreciated or reduced value arising out of the Project or Buyer’s access to or use of
the applicable Property or adjacent areas) (“Evidence of Impact”). The Severance Draw
Request shall include a reasonable description of the amount requested.
c. In the event Seller’s tenant submits a written acknowledgement that the
Project or Buyer’s involvement at or near the Property site was a substantial contributing factor
to the tenant’s termination or non-renewal of the lease, such acknowledgement shall satisfy the
Seller’s obligation to provide Evidence of Impact.
d. Buyer shall have ten (10) business days to object, in writing, to the
Seller’s Severance Payment Draw Request, which objection shall include a written description of
the specific basis for Buyer’s objection, and shall be submitted to Seller and Severance Escrow.
Buyer’s failure to provide a written objection within such five (5) business days shall be deemed
as Buyer having no objection to the Severance Payment Draw Request.
e. Severance Escrow shall release the amount of the Severance Payment
included in Seller’s Severance Payment Draw Request to Seller within fifteen (15) business days
of Severance Escrow’s receipt of such Severance Payment Draw Request, unless Severance
Escrow receives Buyer’s timely objection, as described above.
f. In the event Buyer timely objects to Seller’s Severance Payment Draw
Request, the Parties shall meet and confer within five (5) business days and use good faith efforts
to resolve the Buyer’s objection. Buyer and Seller shall provide notice to Severance Escrow of
the resolution of the objection, and any revisions to the applicable Severance Payment Draw
Request.
g. Following receipt of such notice of resolution, Severance Escrow shall
release the amount of the Severance Payment included in the revised Severance Payment Draw
Request to Seller within ten (10) business days.
5. Opportunity to Mitigate. Nothing in this Exhibit 7 shall limit Buyer’s rights to
mitigate the impact of the Project on tenants, as set forth in Exhibit 4, Section H, to the
Agreement.
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EXHIBIT 8 TO
PURCHASE AND SALE AGREEMENT
AND JOINT ESCROW INSTRUCTIONS
List of Accepted Title Report
• Preliminary Title Report APN 415-051-04 by Commonwealth dated June 6, 2023. File No.
92021073
• Preliminary Title Report APN 415-061-08, 415-061-09, 415-071-03, 415-071-07,
415-071-08 by Commonwealth dated June 6, 2023. File No. 92021084
• Preliminary Title Report APN 415-081-21, 415-081-22 by Commonwealth dated June 6,
2023. File No. 92021065.
• Preliminary Title Report APN 415-081-25 by Commonwealth dated June 20, 2023. File
No. 92021083.
• Preliminary Title Report APN 415-091-01, 415-091-02, 415-091-03, 415-091-04 by
Commonwealth dated June 6, 2023. File No. 92021059.
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1
Santa Ana Trunk Sewer
Rehabilitation,
Project No. 1-23
Presented by:
Mike Dorman
Director of Engineering
Operations Committee
December 3, 2025
Agreement for Purchase and Sale and
Joint Escrow Instructions
Project Location
City of
Costa Mesa
City of
Santa Ana
Santa Ana Trunk
Sewer
Ha
r
b
o
r
B
l
v
d
.
Br
i
s
t
o
l
S
t
.
Alton Ave.
•Rehabilitate 15,000 feet of 42” and 48” sewer
•Rehabilitate 7 manholes
•Install 2 new manholes
•Install air jumpers at 2 existing siphons
MacArthur Blvd.
Sunflower Ave.
Fa
i
r
v
i
e
w
S
t
.
2
Segerstrom
Property
Notice to Proceed in January 2026. 36-month construction duration.
1
2
11/26/2025
2
Temporary Construction Easements
3
Santa Ana Trunk Sewer
Segerstrom Property:
Harbor Gateway
Business Center
Temporary Bypass System TCE
MacArthur Blvd.
Ha
r
b
o
r
B
l
v
d
.
Hy
l
a
n
d
A
v
e
.
Sunflower Ave.
Scenic Ave.
TCE to Construct
New Manhole
TCE for Temporary Bypass
Pump Setup and Work Area
Tenants listed in severance damages
Temporary Construction
Easements (TCE):
$509,300 (36 months)
Severance Damages: $1,009,270
4
•OC San to conduct outreach with impacted tenants
•Severance Payment Draw Request
•Written acknowledgement from tenant that project was a substantial contributing factor
•OC San can object to request
•Meet and confer
•OC San has the right to mitigate
Severance Payment Draw Request
3
4
11/26/2025
3
5
Recommend to the Board of Directors to:
Approve an Agreement for Purchase and Sale and JointEscrow Instructions with C.J. Segerstrom & Sons(“Segerstrom”) that defines the terms and conditions for
temporary construction easements in the amount of
$509,300 for Santa Ana Trunk Sewer Rehabilitation, Project
No. 1-23 and disbursement of severance damages from an
escrow holding account with an upper limit amount of
$1,009,270 for potential adverse impacts during
construction.
Recommendation
Questions?
6
5
6
OPERATIONS COMMITTEE
Agenda Report
Headquarters
18480 Bandilier Circle
Fountain Valley, CA 92708
(714) 593-7433
File #:2025-4521 Agenda Date:12/3/2025 Agenda Item No:7.
FROM:Robert Thompson, General Manager
Originator: Mike Dorman, Director of Engineering
SUBJECT:
A-SIDE PRIMARY CLARIFIERS REPLACEMENT AT PLANT NO. 2, CONTRACT NO. P2-98A
GENERAL MANAGER'S RECOMMENDATION
RECOMMENDATION: Recommend to the Board of Directors to:
Approve a contingency increase of $4,456,235 (4%)to the existing Construction Contract with PCL
Construction,Inc.,for A-Side Primary Clarifiers Replacement at Plant No.2,Contract No.P2-98A as
part of Primary Treatment Rehabilitation at Plant No.2,Project No.P2-98,for a new total
contingency amount of $11,140,588 (10%).
BACKGROUND
Orange County Sanitation District’s (OC San)primary treatment process removes most of the solids
from screened wastewater and is an essential part of the wastewater treatment process.This
treatment is performed in large concrete structures called primary clarifiers.
The primary treatment facilities at OC San’s Plant No.2 consist of fourteen 140-foot-diameter circular
clarifiers built between 1960 and 1985,along with associated piping,distribution structures,sludge
pumping,odor control,and power distribution systems.The clarifiers are divided into three groups:
the A-Side,consisting of four clarifiers;and the B-Side and C-Side,consisting of five clarifiers each.
The A-Side primary clarifiers were constructed between 1960 and 1963 and require complete
replacement.The new A-Side primary clarifiers are being constructed in an area adjacent to the
existing units in an older area of the Plant with poorly documented structures dating back to the
1950s.
OC San executed the A-Side Primary Clarifiers Replacement Project,Contract No.P2-98A to
construct four new primary clarifiers,a new odor control and chemical facility,a new electrical
distribution center,and ancillary utilities and facilities.Once the new facilities are completed,the
project will also demolish the four existing A-Side primary clarifiers,a power building,and an odor
control facility.
Construction began in July 2021,and is expected to be completed by late 2027.Construction is
approximately 70% complete.
Orange County Sanitation District Printed on 11/25/2025Page 1 of 3
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File #:2025-4521 Agenda Date:12/3/2025 Agenda Item No:7.
RELEVANT STANDARDS
·Ensure the public’s money is wisely spent
·24/7/365 treatment plant reliability
PROBLEM
The cost of changes to the construction contract is nearing the Board-approved contingency amount.
The changes to date have largely been related to unknown conditions and unanticipated changes.
Examples of some of the larger changes include:
(1)Additional demolition,disposal and removal of unforeseen and abandoned underground
obstructions such as old pipelines,concrete structures and slabs,and electrical duct banks that
interfered with construction.
(2)Changes in soil improvement methods due to unknown buried structures and debris not
shown in the original plans.
(3)Added direct costs for construction delays caused by unforeseen conditions.
(4)Added installation of a large stainless steel bulkhead to properly separate non-reclaimable
wastewater flows as required by the GWRS system.
(5)Added protective liner installation around the outside walls of each clarifier to prevent gas
intrusion, concrete corrosion, and other clarifier liner failures.
The current authorized contingency is insufficient to cover future changes for the remaining work.
Additionally,there are several unresolved disputed items totaling approximately $11M.While OC
San disputes the merit of these items,the problem-solving process with the contractor is still ongoing.
As such, the final determination of merit and the potential for additional costs remains uncertain.
PROPOSED SOLUTION
Approve a contingency increase to cover future changes required to complete the remaining
construction work.
TIMING CONCERNS
Additional contingency funds are required to approve any future construction changes without
causing project delays.If problems arise,the construction work might have to be stopped until
additional contract funds are authorized to resolve the issue.These delays could result in extended
overhead and direct cost claims from the contractor.
RAMIFICATIONS OF NOT TAKING ACTION
Not increasing the construction contingency will prevent OC San from authorizing PCL Construction,
Inc., to perform additional unanticipated work.
PRIOR COMMITTEE/BOARD ACTIONS
May 2021 -Received and filed Bid Tabulation and Recommendation for A-Side Primary Clarifiers
Replacement at Plant No.2,Project No.P2-98A;awarded a Construction Contract to PCL
Orange County Sanitation District Printed on 11/25/2025Page 2 of 3
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File #:2025-4521 Agenda Date:12/3/2025 Agenda Item No:7.
Replacement at Plant No.2,Project No.P2-98A;awarded a Construction Contract to PCL
Construction,Inc.,for A-Side Primary Clarifiers Replacement at Plant No.2,Contract No.P2-98A,for
an amount not to exceed $111,405,880; and approved a contingency of $6,684,353 (6%).
ADDITIONAL INFORMATION
N/A
CEQA
This project is exempt from CEQA under the Class 2 categorical exemptions set forth in California
Code of Regulations sections 15302.A Notice of Exemption was filed with the Orange County Clerk
-Recorder on April 26, 2018.
FINANCIAL CONSIDERATIONS
This request complies with the authority levels of OC San’s Purchasing Ordinance.This item has
been budgeted (Budget FY 2025-26,Page A-6,Primary Treatment Rehabilitation at Plant No.2,
Project No. P2-98), and the budget is sufficient for the recommended action.
ATTACHMENT
The following attachment(s)may be viewed on-line at the OC San website (www.ocsan.gov)with the complete agenda
package:
·Presentation
SA:lb
Orange County Sanitation District Printed on 11/25/2025Page 3 of 3
powered by Legistar™
11/26/2025
1
A-Side Primary Clarifiers
Replacement at Plant No. 2,
Contract No. P2-98A
Operations Committee
December 3, 2025
Contingency Increase
Presented by:
Raul Cuellar
Engineering Manager
P2-98A
A-SIDE
Project Construction Area
Primary Clarifier
Complex 2
1
2
11/26/2025
2
Project Elements
Primary ClarifiersOdor Control
Distribution Center F
(Electrical Building)
Odor Control
Schedule: 70% Complete
•Notice to Proceed: July 13, 2021
•Final Completion: Late 2027 (Anticipated)
Schedule: 70% Complete
•Notice to Proceed: July 13, 2021
•Final Completion: Late 2027 (Anticipated)
Primary Clarifiers
New Facility
Demolition
Legend
Distribution Structure
Primary Sludge
Pump Station
Junction Boxes
3
4
Bid Results – March 16, 2021
Amount of BidBidder
$129,000,000Engineer’s Estimate
$111,405,880PCL Construction, Inc.
$112,849,000Kiewit Infrastructure West Co.
$119,360,000J.F. Shea Construction, Inc.
3
4
11/26/2025
3
5
Summary of Major Changes to Date
PercentageAmount Change
2.5%$2,812,360 1. Additional demolition of underground obstructions
0.6%$720,418 2. Change in soil improvement methods
0.3%$366,8653. Construction delay direct costs from unforeseen conditions
0.2%$209,056 4. Bulkhead installation to separate non-reclaimable flows
0.2%$187,0645. Protective liner installation around outside clarifier walls
3.9%$4,295,763 Total Major Changes
6.0%$6,684,353Approved Construction Contingency — May 2021
1. Additional Demolition of Underground Obstructions
More unknown RCP pipelines and concrete structures to remove.
Cost: $2,812,000
6
5
6
11/26/2025
4
7
2. Change in Soil Improvement Methods
Rigid Inclusion in lieu of Deep Soil Mixing on areas that have underground obstructions.
Cost: $720,000
Deep Soil Mixing
Rigid Inclusion
Obstruction
Obstruction
Rigid InclusionDeep Soil Mixing
8
3. Delay Direct Costs from Unforeseen Conditions
Additional direct costs from construction delays caused by unforeseen electrical ductbanks.
Cost: $366,865
7
8
11/26/2025
5
9
4. Bulkhead to Separate Non-Reclaimable Flows
Junction Box 2
Add stainless steel
bulkhead to separate
non-reclaimable and
reclaimable flows
Non-Reclaimable Flow
Reclaimable Flow
10
4. Bulkhead to Separate Non-Reclaimable Flows
Installation of a temporary large stainless-steel bulkhead to separate non-reclaimable wastewater flows as required by the GWRS Final Expansion system.
Cost: $209,000
9
10
11/26/2025
6
11
5. Protective Liner Around Outside Walls
Additional protective liner installation around the exterior launder walls of each clarifier to prevent gas intrusion, concrete corrosion, and other liner failures.
Cost: $187,000
Before After
12
Construction Contract Status
PercentageAmount Construction Contract
$111,405,880Original Contract Amount
6.0%$6,684,353Board Approved Contingency
5.6%$6,219,958Changes to Date
0.4%$464,395Remaining Contingency
4.0%$4,456,235Requested Contingency Increase
Disputed Work / Time Claims: $11M
Remaining Work:
•Civil, Mechanical, Electrical and Instrumentation and Controls
•Demolition of existing 4 clarifiers with support facilities
•Resolution of project disputes
11
12
11/26/2025
7
13
Recommend to the Board of Directors to:
Approve a contingency increase of $4,456,235 (4%) to the existing ConstructionContract with PCL Construction, Inc., for A-Side Primary Clarifiers Replacement atPlant No. 2, Contract No. P2-98A as part of Primary Treatment Rehabilitation atPlant No. 2, Project No. P2-98, for a new total contingency amount of$11,140,588 (10%).
Recommendation
Questions?
14
13
14
OPERATIONS COMMITTEE
Agenda Report
Headquarters
18480 Bandilier Circle
Fountain Valley, CA 92708
(714) 593-7433
File #:2025-4632 Agenda Date:12/3/2025 Agenda Item No:8.
FROM:Robert Thompson, General Manager
Originator: Wally Ritchie, Director of Finance
SUBJECT:
INFORMATION TECHNOLOGY UPDATES
GENERAL MANAGER'S RECOMMENDATION
RECOMMENDATION:
Information Item.
BACKGROUND
Staff will provide an update on recent assessments of OC San’s Information Technology Office and
Industrial Control Systems.
RELEVANT STANDARDS
·Protect OC San Assets
ATTACHMENT
The following attachment(s)may be viewed on-line at the OC San website (www.ocsan.gov)with the complete agenda
package:
N/A
Orange County Sanitation District Printed on 11/25/2025Page 1 of 1
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ORANGE COUNTY SANITATION DISTRICT
COMMON ACRONYMS
ACWA Association of California
Water Agencies LOS Level Of Service RFP Request For Proposal
APWA American Public Works
Association MGD Million Gallons Per Day RWQCB Regional Water Quality
Control Board
AQMD Air Quality Management
District MOU Memorandum of
Understanding SARFPA Santa Ana River Flood
Protection Agency
ASCE American Society of Civil Engineers NACWA National Association of Clean Water Agencies SARI Santa Ana River Interceptor
BOD Biochemical Oxygen Demand NEPA National Environmental Policy
Act SARWQCB Santa Ana Regional Water
Quality Control Board
CARB California Air Resources
Board NGOs Non-Governmental
Organizations SAWPA Santa Ana Watershed
Project Authority
CASA California Association of
Sanitation Agencies NPDES National Pollutant Discharge
Elimination System SCADA Supervisory Control And
Data Acquisition
CCTV Closed Circuit Television NWRI National Water Research
Institute SCAP
Southern California
Alliance of Publicly Owned
CEQA California Environmental
Quality Act O & M Operations & Maintenance SCAQMD South Coast Air Quality
Management District
CIP Capital Improvement
Program OCCOG Orange County Council of
Governments SOCWA South Orange County
Wastewater Authority
CRWQCB California Regional Water
Quality Control Board OCHCA Orange County Health Care
Agency SRF Clean Water State
Revolving Fund
CWA Clean Water Act OCSD Orange County Sanitation District SSMP Sewer System Management Plan
CWEA California Water Environment Association OCWD Orange County Water District SSO Sanitary Sewer Overflow
EIR Environmental Impact Report OOBS Ocean Outfall Booster Station SWRCB State Water Resources
Control Board
EMT Executive Management Team OSHA Occupational Safety and
Health Administration TDS Total Dissolved Solids
EPA US Environmental Protection Agency PCSA
Professional
Consultant/Construction TMDL Total Maximum Daily Load
FOG Fats, Oils, and Grease PDSA Professional Design Services
Agreement TSS Total Suspended Solids
gpd gallons per day PFAS
Per- and Polyfluoroalkyl
Substances WDR Waste Discharge
Requirements
GWRS Groundwater Replenishment
System PFOA Perfluorooctanoic Acid WEF Water Environment
Federation
ICS Incident Command System PFOS Perfluorooctanesulfonic Acid WERF Water Environment & Reuse Foundation
IERP Integrated Emergency
Response Plan POTW Publicly Owned Treatment
Works WIFIA Water Infrastructure
Finance and Innovation Act
JPA Joint Powers Authority ppm parts per million WIIN Water Infrastructure Improvements for the
LAFCO Local Agency Formation
Commission PSA Professional Services
Agreement WRDA Water Resources
Development Act
ORANGE COUNTY SANITATION DISTRICT
GLOSSARY OF TERMS
ACTIVATED SLUDGE PROCESS – A secondary biological wastewater treatment process where bacteria reproduce at a high rate with the introduction of excess air or oxygen and consume dissolved nutrients in the wastewater.
BENTHOS – The community of organisms, such as sea stars, worms, and shrimp, which live on, in, or near the seabed, also known as the benthic zone.
BIOCHEMICAL OXYGEN DEMAND (BOD) – The amount of oxygen used when organic matter undergoes decomposition by microorganisms. Testing for BOD is done to assess the amount of organic matter in water.
BIOGAS – A gas that is produced by the action of anaerobic bacteria on organic waste matter in a digester tank that can be used
as a fuel.
BIOSOLIDS – Biosolids are nutrient rich organic and highly treated solid materials produced by the wastewater treatment process. This high-quality product can be recycled as a soil amendment on farmland or further processed as an earth-like product for
commercial and home gardens to improve and maintain fertile soil and stimulate plant growth.
CAPITAL IMPROVEMENT PROGRAM (CIP) – Projects for repair, rehabilitation, and replacement of assets. Also includes treatment improvements, additional capacity, and projects for the support facilities.
COLIFORM BACTERIA – A group of bacteria found in the intestines of humans and other animals, but also occasionally found elsewhere, used as indicators of sewage pollution. E. coli are the most common bacteria in wastewater.
COLLECTIONS SYSTEM – In wastewater, it is the system of typically underground pipes that receive and convey sanitary wastewater or storm water.
CERTIFICATE OF PARTICIPATION (COP) – A type of financing where an investor purchases a share of the lease revenues of a program rather than the bond being secured by those revenues.
CONTAMINANTS OF POTENTIAL CONCERN (CPC) – Pharmaceuticals, hormones, and other organic wastewater contaminants.
DILUTION TO THRESHOLD (D/T) – The dilution at which the majority of people detect the odor becomes the D/T for that air sample.
GREENHOUSE GASES (GHG) – In the order of relative abundance water vapor, carbon dioxide, methane, nitrous oxide, and ozone gases that are considered the cause of global warming (“greenhouse effect”).
GROUNDWATER REPLENISHMENT SYSTEM (GWRS) – A joint water reclamation project that proactively responds to Southern California’s current and future water needs. This joint project between the Orange County Water District and OCSD provides 70
million gallons per day of drinking quality water to replenish the local groundwater supply.
LEVEL OF SERVICE (LOS) – Goals to support environmental and public expectations for performance.
N-NITROSODIMETHYLAMINE (NDMA) – A N-nitrosamine suspected cancer-causing agent. It has been found in the GWRS
process and is eliminated using hydrogen peroxide with extra ultra-violet treatment.
NATIONAL BIOSOLIDS PARTNERSHIP (NBP) – An alliance of the NACWA and WEF, with advisory support from the EPA. NBP is committed to developing and advancing environmentally sound and sustainable biosolids management practices that go beyond regulatory compliance and promote public participation to enhance the credibility of local agency biosolids programs and improved communications that lead to public acceptance.
PER- AND POLYFLUOROALKYL SUBSTANCES (PFAS) – A large group (over 6,000) of human-made compounds that are resistant to heat, water, and oil and used for a variety of applications including firefighting foam, stain and water-resistant clothing, cosmetics, and food packaging. Two PFAS compounds, perfluorooctanesulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) have been the focus of increasing regulatory scrutiny in drinking water and may result in adverse health effects including developmental effects to fetuses during pregnancy, cancer, liver damage, immunosuppression, thyroid effects, and other effects.
PERFLUOROOCTANOIC ACID (PFOA) – An ingredient for several industrial applications including carpeting, upholstery, apparel, floor wax, textiles, sealants, food packaging, and cookware (Teflon).
PERFLUOROOCTANESULFONIC ACID (PFOS) – A key ingredient in Scotchgard, a fabric protector made by 3M, and used in numerous stain repellents.
PLUME – A visible or measurable concentration of discharge from a stationary source or fixed facility.
PUBLICLY OWNED TREATMENT WORKS (POTW) – A municipal wastewater treatment plant.
SANTA ANA RIVER INTERCEPTOR (SARI) LINE – A regional brine line designed to convey 30 million gallons per day of non-reclaimable wastewater from the upper Santa Ana River basin to the ocean for disposal, after treatment.
SANITARY SEWER – Separate sewer systems specifically for the carrying of domestic and industrial wastewater.
SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT (SCAQMD) – Regional regulatory agency that develops plans and
regulations designed to achieve public health standards by reducing emissions from business and industry.
SECONDARY TREATMENT – Biological wastewater treatment, particularly the activated sludge process, where bacteria and other microorganisms consume dissolved nutrients in wastewater.
SLUDGE – Untreated solid material created by the treatment of wastewater.
TOTAL SUSPENDED SOLIDS (TSS) – The amount of solids floating and in suspension in wastewater.
ORANGE COUNTY SANITATION DISTRICT
GLOSSARY OF TERMS
TRICKLING FILTER – A biological secondary treatment process in which bacteria and other microorganisms, growing as slime on the surface of rocks or plastic media, consume nutrients in wastewater as it trickles over them.
URBAN RUNOFF – Water from city streets and domestic properties that carry pollutants into the storm drains, rivers, lakes, and oceans.
WASTEWATER – Any water that enters the sanitary sewer.
WATERSHED – A land area from which water drains to a particular water body. OCSD’s service area is in the Santa Ana River Watershed.