Loading...
HomeMy WebLinkAbout09-02-2015 Operations Committee Agenda Packet Orange County Sanitation District Wednesday, September 2, 2015 Regular Meeting of the 5:00 P.M. Operations Committee Administration Building Board Room 10844 Ellis Avenue Fountain Valley, CA 92708 714 593-7433 AGENDA PLEDGE OF ALLEGIANCE: DECLARATION OF QUORUM: PUBLIC COMMENTS: If you wish to address the Board of Dfmctors on any item, please complete a Speaker's Form(located at the table outside of the Board Room) and submit it to the Clerk of the Board or notify the Clerk of the Board the item number on which you want to speak. Speakers will be recognized by the Chairman and are requested to limit comments to three minutes. REPORTS: The Committee Chair and the General Manager may present verbal reports on miscellaneous matters of general interest to the Committee Members. These reports are for information only and require no action by the Committee. CONSENT CALENDAR: The 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 Any items withdrawn from the Consent Calendar for separate discussion will be conserved in the regular order of business. 1. APPROVAL OF MINUTES (Clerk of the Board) RECOMMENDATION: Approve Minutes of the July 1, 2015, Operations Committee Meeting. 2. PURCHASE OF A LIQUID CHROMATOGRAPHY — MASS SPECTROMETRY SYSTEM (Ed Torres) RECOMMENDATION: Recommend to the Board of Directors to: Award a purchase order to Agilent Technologies, Inc., for a Liquid Chromatography/Mass Spectrometry Instrument with an On-Line Solid Phase Extraction, Specification No. E-2015-645BD-R2, for a total amount not to exceed $465,330. 09/02/15 Operations Committee Agenda Page 1 of 3 NON-CONSENT CALENDAR: 3. SOLIDS THICKENING AND PROCESSING AT PLANT NO. 2, PROJECT NO. P2-89 (Rob Thompson) RECOMMENDATION: Recommend to the Board of Directors to: Approve a contingency increase of $526,868 (2%) to the construction contract with W.M. Lyles Company (WML) for Solids Thickening and Processing at Plant No. 2, Project No. P2-89, for a total contingency of $2,634,340 (10%). INFORMATION ITEMS: 4. GROUND WATER REPLENISHMENT SYSTEM (Rob Thompson) 5. QUARTERLY ODOR COMPLAINT REPORT (Ed Torres) DEPARTMENT HEAD REPORTS OTHER BUSINESS AND COMMUNICATIONS OR SUPPLEMENTAL AGENDA ITEMS, IF ANY: ADJOURNMENT: The next Operations Committee meeting is scheduled for Wednesday, October 7, 2015, at 5:00 p.m. 09/02/15 Operations Committee Agenda Page 2 of 3 Accommodations for the Disabled: Meeting Rooms are wheelchair accessible. If you require any special disability related accommodations, please contact the Orange County Sanitation District 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. Aaenda Postina: In accordance with the requirements of California Government Code Section 54954.2,this agenda has been posted outside the main gate of the Sanitation District's Administration Building located at 10844 Ellis Avenue, Fountain Valley,California,not less than 72 hours prior to the meeting dale and time above. All public records relating to each agenda item,including any public records distributed less than 72 hours prior to the meeting to all,or a majority of the Board of Directors,are available for public inspection in the office of the Clerk of the Board. Agenda Descriotiom 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. NOTICE TO DIRECTORS: To place items on the agenda for the Committee Meeting,items must be submitted to the Clerk of the Board 14 days before the meeting. Kelly A. Lore Clerk of the Board (714)593-7433 klore(docsd.cem For any questions on the agenda,Committee members may contact staff at: General Manager Jim Herberg (714)593-7300 iherbem(docsd.com Assistant General Manager Bob Ghirelli (714)593-7400 mhire1li0.ocsd.com Director of Engineering Rob Thompson (714)593-7310 rthomosomCcDocsd.com Director of Facility Support Services Nick Arhontes (714)593-7210 narhontes0.ocsd.com Director of Operations&Maintenance Ed Torres 714 593-7080 etomes ocsd.cem 09/02/15 Operations Committee Agenda Page 3 of 3 ITEM NO. 1 MINUTES OF THE OPERATIONS COMMITTEE Orange County Sanitation District Wednesday, July 1, 2015, 5:00 p.m. A regular meeting of the Operations Committee was called to order by Committee Chair Withers on Wednesday, July 1, 2015, at 5:02 p.m. in the Administration Building of the Orange County Sanitation District. Vice-Chair Seboum led the Flag Salute. A quorum was declared present, as follows: COMMITTEE MEMBERS PRESENT: STAFF PRESENT: John Withers, Chair Jim Herberg, General Manager David Shawver, Vice-Chair Bob Ghirelli, Assistant General Manager Tom Beamish Rob Thompson, Director of Engineering Ellery Deaton Ed Torres, Director of Operations & Maintenance Steve Jones Lorenzo Tyner, Director of Finance & Robert Kiley Administrative Services Richard Murphy Nick Arhontes, Director of Facility Support Services Fred Smith Kelly Lore, Clerk of the Board Chad Wanke Cindi Ambrose Mariellen Yarc Jeff Brown John Nielsen, Board Chair Jennifer Cabral Greg Seboum, Board Vice-Chair Carla Dillon Mark Esquer COMMITTEE MEMBERS ABSENT: Dean Fisher Lisa Bartlett Norbert Gaia Steve Nagel At Garcia Kathy Millea Eros Yong OTHERS PRESENT: Brad Hogin, General Counsel Michael Beverage, Alternate Director YLWD PUBLIC COMMENTS: None. REPORT OF COMMITTEE CHAIR: Committee Chair Withers did not provide a report. 07/01/2015 Opeations Committee Minutes Page 1 of 5 REPORT OF GENERAL MANAGER: General Manager, Jim Herberg announced that there were commemorative giveaways from the GWRS Expansion Dedication Ceremony available at the back table along with OCSD Safety Calendars, which feature art from students K-12. CONSENT CALENDAR: 1. MOVED, SECONDED, and DULY CARRIED TO: Approve Minutes of the regular Operations Committee Meeting of June 3, 2015. AYES: Beamish, Deaton, Kiley, Murphy, Nielsen, Sebourn, Shawver, Smith, F., Wanks, Withers and Yarc NOES: None ABSTENTIONS: None ABSENT: Bartlett; Jones and Nagel 2. MOVED, SECONDED, and DULY CARRIED TO: Approve Amendment No. 1 to the Service Contract with Hoffman Southwest Corp., dba Professional Pipe Services,for Industrial Cleaning Services, Specification No. S-2014-621 BD,for the period December 11, 2014 through December 10, 2015, for an additional amount of$35,000 for a total contract amount not to exceed $167,000. AYES: Beamish, Deaton, Kiley, Murphy, Nielsen, Sebourn, Shawver, Smith, F., Wanks, Withers and Yarc NOES: None ABSTENTIONS: None ABSENT: Bartlett; Jones and Nagel NON-CONSENT CALENDAR: Engineering Supervisor Carla Dillon provided an informative PowerPoint presentation regarding Item 3 which included: project overview and challenges; design and construction costs; and most qualified design firm. Director of Engineering Rob Thompson responded to questions from the Committee regarding: bidding processes; cost v. bid of Professional Design Services; cost comparison to other similar projects; qualified bidder distinctions, expertise of firm, scope of work, etc.; and information pertaining to the firm recommended for award. 07/01/2015 Operations Committee Minutes Page 2 of 5 General Counsel, Brad Hogin answered questions regarding the bidding process as it pertains to the government code and the specific procedure in the OCSD Purchasing Ordinance. It was requested by the Committee that the Engineer's cost estimate be included in future Agenda reports. Director Jones arrived at 5:17 p.m. 3. MOVED, SECONDED, and DULY CARRIED TO: Recommend to the Board of Directors: A. Approve a Professional Design Services Agreement with MWH Americas, Inc. to provide engineering design services for the Rehabilitation of Seal Beach Pump Station, Project No. 3-62, for an amount not to exceed $6,917,347; $6,917,175; and B. Approve a contingency of$691,736 $691,718 (10%). AYES: Beamish, Deaton, Jones, Kiley, Murphy, Nielsen, Seboum, Shawver, Smith, F., Wanks, Withers and Yarc NOES: None ABSTENTIONS: None ABSENT: Bartlett and Nagel Director of Engineering Rob Thompson, provided additional information regarding Item 4. He stated that in October of 2014, staff provided initial information regarding the AquaCritok� process. A quick overview of the pilot unit and the opportunities to this process were provided. Mr. Thompson answered questions regarding: TAG technology assessment group, screening new technologies; phasing this in at end of life for facilities that need rebuilding; no effect to the new building construction; possible grants to pay for this research; energy return on the energy used; efficiency of this system; and possible dangers of these types of facilities. Mr. Thompson introduced Senior Engineer, Jeff Brown who provided further information regarding this technology and possible cost savings. The committee requested that the information provided in October of 2014 be sent to them. 4. MOVED, SECONDED, and DULY CARRIED TO: Recommend to the Board of Directors: A. Establish a budget for an AquaCritox® Demonstration Project Evaluation Study, Project No. SP-125-17, in the amount of$423,000. 07/01/2015 Operations Committee Minutes Page 3 of 5 B. Approve a Sole Source Professional Services Agreement with SCFI Group Limited to conduct an Evaluation Study for the AquaCritox®Demonstration Project, Project No. SPA 25-17, for an amount not to exceed $311,460; and C. Approve a contingency of$31,200 (10%) AYES: Beamish, Deaton, Jones, Kiley, Murphy, Nielsen, Seboum, Shawver, Smith, F., Wanke, Withers and Yarc NOES: None ABSTENTIONS: None ABSENT: Bartlett and Nagel INFORMATION ITEMS: None. DEPARTMENT HEAD REPORTS: Director of Engineering, Rob Thompson, provided information regarding a request for additional funds for the on-call services of Koury Engineering &Testing Inc., which will be brought to the Board for approval later this month. The additional request is needed to support unforeseen inspections of structural steel installation on project P1-101 construction. Director of Operations and Maintenance, Ed Torres informed the Committee of upcoming tours that are being offered on the OCSD Ocean Monitoring Vessel, the Nerissa. The Clerk of the Board will contact the Directors with the dates and times. OTHER BUSINESS AND COMMUNICATIONS OR SUPPLEMENTAL AGENDA ITEMS, IF ANY: None. 07/01/2015 Operations Committee Minutes Page 4 of 5 ADJOURNMENT At 5:50 p.m., Committee Chair Withers declared the meeting adjourned to the next scheduled meeting of Wednesday, September 2, 2015 at 5:00 p.m. Submitted by, Kelly A. Lore Clerk of the Board 07/01/2015 Operations Committee Minutes Page 5 of 5 OPERATIONS COMMITTEE Melting D310 TOBE.Of Dir. 09/02/15 09/23/15 AGENDA REPORT ItemNumber Item Number z Orange County Sanitation District FROM: James D. Herberg, General Manager Originator: Ed Torres, Director of Operations and Maintenance SUBJECT: LIQUID CHROMATOGRAPHY/ MASS SPECTROMETRY (LCMS) LABORATORY INSTRUMENT GENERAL MANAGER'S RECOMMENDATION Award a purchase order to Agilent Technologies, Inc., for a Liquid Chromatography/Mass Spectrometry Instrument with an On-Line Solid Phase Extraction, Specification No. E-2015-645BD-R2, for a total amount not to exceed $ 465,330. SUMMARY This purchase is for the replacement of a Liquid Chromatography / Mass Spectrometry (LCMS) Instrument which is 10 years old and has exceeded the manufacturer serviceable life of seven years. Additionally, the software from the current LCMS instrument is incompatible with OCSD's latest Windows operating platform limiting its utility. The Environmental Laboratory is required by OCSD's Ocean Discharge permit to monitor for chemicals of emerging concern (CECs) in the final effluent sample. The new LCMS instrument will have the technology necessary for increased sensitivity to meet current and future regulatory requirements for the analysis of CECs. Data generated for CECs analysis will also be used to support the Groundwater Replenishment System (GWRS). PRIOR COMMITTEE/BOARD ACTIONS N/A ADDITIONAL INFORMATION OCSD posted a request for bids on June 5, 2015. Three bids were received on July 7, 2015. The bids were evaluated in accordance with OCSD policies and procedures and included the purchase price of the instrument plus three years of warranty service in addition to the two-year manufacturers warranty. Agilent Technologies, Inc.was deemed the lowest responsive and responsible bidder. The Thermo Fisher Scientific bid was deemed non-responsive, as the system offered did not meet the full specifications included in the request for bids. The costs from Agilent Technologies include the Agilent 6495 LCMS instrument for $465,330 ($431,680 plus $33,650 tax), plus $106,730 for the additional three years of warranty. The total bid is $572,060, of which $465,330 will be paid at completion of Page 1 of 2 installation. The remaining extended service agreement will be paid in subsequent years with approved operating budget funds after the initial warranty period has lapsed in accordance with the contract. Summary information on the bid opening for the purchase of a LCMS is as follows: Bidder Amount of Bid Thermo Electron North America LLC $ 413,153 Agilent Technologies, Inc. $ 572,060 Shimadzu Scientific Instruments, Inc. $ 618,184 CEQA N/A BUDGET/PURCHASING ORDINANCE COMPLIANCE This request complies with authority levels of the Sanitations District's Ordinance No. OCSD 47. This item has been budgeted in Capital Equipment, Section 8, pg.147. Contingency funds will not be used to fund this purchase. Date of Approval Purchase Amount Contingencv 09/23/2015 $465,330 0% ATTACHMENT N/A Page 2 of 2 OPERATIONS COMMITTEE Meeting Dare TOBd.Of Dir. 09/02/15 09/23/15 AGENDA REPORT Item Number Item Number 3 Orange County Sanitation District FROM: James D. Herberg, General Manager Originator: Rob Thompson, Director of Engineering SUBJECT: SOLIDS THICKENING AND PROCESSING UPGRADES AT PLANT NO. 2,PROJECT NO. P2-89 GENERAL MANAGER'S RECOMMENDATION Approve a contingency increase of $526,868 (2%) to the construction contract with W.M. Lyles Company (WML) for Solids Thickening and Processing Upgrades at Plant No. 2, Project No. P2-89, for a total contingency of$2,634,340 (10%). SUMMARY Completion of the Trickling Filter/Solids Contact (TF/SC) process at Plant No. 2 requires additional secondary sludge thickening capacity and anaerobic digestion capacity. To provide that capacity, the Solids Thickening and Processing Upgrades project was created to extensively modify and rehabilitate each of the four dissolved air flotation thickeners (DAFTs) and modify two existing holding digesters so that they can be used as active anaerobic digesters. Pro act Status Summary Original Contract Amount $26,383,400 Percent Work Complete 85% Percent Time Passed 70% Anticipated Completion Dec. 2016 To cover any further unknown conditions, staff has determined that the original contingency budget of 8% is inadequate to meet the projected refurbishment needs of the facilities and allow the work to be completed without undue delay. PRIOR COMMITTEE/BOARD ACTIONS April 2012 — Awarded a construction contract to W.M. Lyles for Solids Thickening and Processing Upgrades at Plant No. 2, Project No. P2-89, for an amount not to exceed $26,383,400, and approved a contingency of$2,107,472 (8%). ADDITIONAL INFORMATION Due to their poor efficiency and reliability, three of the four existing DAFTs needed to be kept in service during construction. As a result, only one DAFT at a time could be rehabilitated. Fortunately, when the first modified DAFT was placed in service, its performance and capacity was improved to the point that Operation's staff were able to Page 1 of 3 allow two DAFTs at a time to be out of service while maintaining appropriate redundancy and reliability. In addition, long-term operating costs will be avoided by running fewer units and using less polymer. Despite the successes of the project, substantial costs have been realized due to unknown deficiencies in the existing facilities, particularly with the digesters. Examples of unanticipated costs include the following: • Cutting out, replacing, and reinforcing multiple pipe penetrations through an existing 21-inch thick digester wall. • Replacing an existing solids transfer pump not included in the original project scope, but necessary to mitigate the impacts of the two holding tanks being out of service for an extended period. • Repairing existing concrete domes of the two digesters due to cracking, chemical degradation, and spalling. • Sealing of cracks in the digester floor slab that might have allowed sludge to leak into the ground. • Replacing a faulty seal between the digester walls and the digester floors. • Modifying the center support column for one of the existing DAFTs due to differences between how the center column was constructed and how it was shown in the record drawings. Even though such unanticipated costs were encountered during construction, the total costs for providing the additional capacity and improved reliability were greatly reduced by reusing the existing structures. With less than 18 months of construction remaining in the project, much of the unknown structural risks are known and addressed. The changes required to date have consumed most of the contingency originally authorized for the project. To cover the risks remaining in construction, an increase in the construction contract contingency from 8% to 10% is requested. CEQA The project was determined to be exempt in accordance with Section 15301 (b). A Notice of Exemption filed on July 27, 2010. Page 2 of 3 BUDGET/PURCHASING ORDINANCE COMPLIANCE This request for increase in the project contingency complies with authority levels of the Orange County Sanitation District's Purchasing Ordinance. This item has been budgeted (FY2014-15 and 2015-16, Section S, Page 69). Date of Approval Contract Amount Continoencv 04/25/12 $26,383,400 $2,107,472 (8%) 09/23/15 $ 526,868 (2%) $2,634,340 (10%) JM:dm:gc Page 3 of 3 OPERATIONS COMMITTEE Meeting Date To ad.of DV 09/02,15 — AGENDA REPORT Item Number Item Number a — Orange County Sanitation District FROM: James D. Herberg, General Manager Originator: Rob Thompson, Director of Engineering SUBJECT: GROUND WATER REPLENISHMENT SYSTEM GENERAL MANAGER'S RECOMMENDATION Information Only. SUMMARY Staff will present on the Ground Water Replenishment System (GWRS) program, which will include an overview of the program, Orange County Sanitation District's (Sanitation District)partnership with the Orange County Water District, and the value of the Sanitation District contributions to the project. PRIOR COMMITTEE/BOARD ACTIONS N/A ADDITIONAL INFORMATION N/A CECIA N/A BUDGET/PURCHASING ORDINANCE COMPLIANCE N/A ATTACHMENT The following attachment(s) may be viewed on-line at the OCSD website (wwwocsd.com) with the complete agenda package: N/A RT:KM:CM:sa Page 1 of 1 OPERATIONS COMMITTEE Meeting Date To ad.of Dir. os/o2/is — AGENDA REPORT Rem Number Item number s — Orange County Sanitation District FROM: James D. Herberg, General Manager Originator: Ed Torres, Director of Operations and Maintenance SUBJECT: QUARTERLY ODOR COMPLAINT REPORT GENERAL MANAGER'S RECOMMENDATION Information Only. SUMMARY During the fourth quarter of FY 2014/15 Plant No. 1 had one odor complaint, Plant No. 2 had no odor complaints and the collections system had three odor complaints attributable to OCSD. A brief summary of the odor complaints with a table tracking the history is included as an attachment. PRIOR COMMITTEE/BOARD ACTIONS N/A ADDITIONAL INFORMATION N/A CEQA N/A BUDGET/PURCHASING ORDINANCE COMPLIANCE N/A ATTACHMENT The following adachment(s) are provided in hard copy and may be viewed on-line at the OCSD website (mm w.ocsd.coml with the complete agenda package and attachments: Fiscal Year 2014/15 Fourth Quarter Odor Complaint Summary Page 1 of 1 Orange County Sanitation District Odor Complaint Report Fiscal Year 2014/15 — 411 Quarter 1. Plant No. 1 Treatment Facility Odor Complaint Summary Plant No. 1 received one attributable odor complaint during the 4" quarter. The complaint was initiated by internal staff from the Administrative Building. Operations staff were unable to identify the odor source but concluded the cause of odor was likely due to a waste hauler truck dumping while a portion of the waste hauler scrubbing system was out of service for maintenance. 2. Plant No. 2 Treatment Facility Odor Complaint Summary Plant No. 2 received no attributable odor complaints during the 411 quarter. 3. Collection Facilities Odor Complaints—4u' Quarter FY 2014/15 OCSD received three attributable odor complaints due to the collection system. Based on our current upstream sewage conditioning program, our goal for level of service is 12 or fewer complaints attributed to OCSD. 4. All Odor Complaints Trackina 4d'Qtr V Qtr 2nd Qtr 1"Qtr Cumulative FY Apr.2015 to Jun.2015 FY FY FY FY 14/15 14/15 14115 14/15 14/15 All Public Complaints Collections P1 P2 Total Total Total Total Total Attributable to 3 1 0 4 5 18 16 43 OCSD Not Attributable to OCSD 8 10 0 18 6 6 11 41 Total Public Complaints 11 11 0 22 11 24 27 84 Received: ORANGE COUNTY SANITATION DISTRICT Agenda Terminology Glossary Glossary of Terms and Abbreviations AQMD Air Quality Management District ASCE American Society of Civil Engineers BOD Biochemical Oxygen Demand CARB California Air Resources Board CASA California Association of Sanitation Agencies CCTV Closed Circuit Television CEQA California Environmental Quality Act CRWQCB California Regional Water Quality Control Board CWA Clean Water Act CWEA California Water Environment Association EIR Environmental Impact Report EMT Executive Management Team EPA U.S. Environmental Protection Agency FOG Fats, Oils, and Grease FSSD Facilities Support Services Department gpd Gallons per day GWR System Groundwater Replenishment System (also called GWRS) ICS Incident Command System IERP Integrated Emergency Control Plan LOS Level of Service MGD Million gallons per day NACWA National Association of Clean Water Agencies NPDES National Pollutant Discharge Elimination System NWRI National Water Research Institute O&M Operations and Maintenance OCCOG Orange County Council of Governments OCHCA Orange County Health Care Agency OCSD Orange County Sanitation District OCWD Orange County Water District GOBS Ocean Outfall Booster Station OSHA Occupational Safety and Health Administration POTW Publicly Owned Treatment Works ppm Parts per million RFP Request For Proposal RWQCB Regional Water Quality Control Board SARFPA Santa Ana River Flood Protection Agency Glossary of Terms and Abbreviations SARI Santa Ana River Inceptor SARWQCB Santa Ana Regional Water Quality Control Board SAWPA Santa Ana Watershed Project Authority SCADA Supervisory Control and Data Acquisition system SCAP Southern California Alliance of Publicly Owned Treatment Works SCAQMD South Coast Air Quality Management District SOCWA South Orange County Wastewater Authority SSMP Sanitary Sewer Management Plan SSO Sanitary Sewer Overflow SWRCB State Water Resources Control Board TDS Total Dissolved Solids TMDL Total Maximum Daily Load TSS Total Suspended Solids WDR Waste Discharge Requirements WEF Water Environment Federation WERF Water Environment Research Foundation 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 know 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. 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 farm land 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. Glossary of Terms and Abbreviations Contaminants of Potential Concern (CPC) — Pharmaceuticals, hormones, and other organic wastewater contaminants. Dilution to Threshold (D!f) — the dilution at which the majority of the people detect the odor becomes the DrT for that air sample. Greenhouse gases — 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 (GWR) System — 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 the Orange County Sanitation District provides 70 million gallons a day of drinking quality water to replenish the local groundwater supply. Levels of Service (LOS)—Goals to support environmental and public expectations for performance. NDMA— N-Nitrosodimethylamine is an N-nitrosoamine suspected cancer-causing agent. It has been found in the Groundwater Replenishment System process and is eliminated using hydrogen peroxide with extra ultra-violet treatment. National Biosolids Partnership (NBP) — An alliance of the National Association of Clean Water Agencies (NACWA) and Water Environment Federation (WEF), with advisory support from the U.S. Environmental Protection Agency (EPA). NBP is committed to developing and advancing environmentally sound and sustainable biosolids management practices that go beyond regulatory compliance and promote public participation in order to enhance the credibility of local agency biosolids programs and improved communications that lead to public acceptance. Plume—A visible or measurable concentration of discharge from a stationary source or fixed facility. Publicly-owned Treatment Works (POTW)— Municipal wastewater treatment plant. Santa Ana River Interceptor (SARI) Line — A regional brine line designed to convey 30 million gallons per day (MGD) 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. Combined sewers carry both wastewater and urban run-off. 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. 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. Glossary of Terms and Abbreviations 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.