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HomeMy WebLinkAbout1992-01-15 (Z�tw COUNTY SANITATION DISTRICTS t OF ORANGE COUNTY, CALIFORNIA P.O. BOX 8127, FOUNTAIN VALLEY,CALIFORNIA 92928-8127 n y,M1 10844 ELLIS. FOUNTAIN VALLEY,CALIFORNIA 92708-7018 (714)962-2411 January 9, 1992 NOTICE OF ADJOURNED REGULAR MEETING DISTRICT NO. 5 WEDNESDAY, JANUARY 15, 1992 - 11 :30 A.M. 10844 EMS Avenue Fountain Valley, California Pursuant to adjournment of the regular meeting of January 8, 1992, the Board of Directors of County Sanitation District No. 5 will meet in an adjourned regular meeting at the above hour and date. secretary BOARDS OF DIRECTORS County Sanitation Districts P.O.Box 8127.10844 Ellis Avenue of Orange County,California, Fountain Valley.CA 92728-8127 Telephone: (714)962-2411 DISTRICT NO. 5 AGENDA ADJOURNED REGULAR MEETING WEDNESDAY, JANUARY 15, 1992 - 11 :30 A.M. (1) Roll call (2) Public Comments: All persons wishing to address the Board on specific agenda items or matters of general interest should do so at this time. As determined by the Chairman, speakers may be deferred until the specific item is taken for discussion and remarks may be limited to five minutes. (3) Study session re backbone Pacific Coast Highway sewer system: (a) verbal status report on the District's sewer rehabilitation program for the backbone Pacific Coast Highway sewer system. (b) Discussion (c) Consideration of motion to receive and file Staff Report, dated January 9, 1992, relative to rehabilitation of the Pacific Coast Highway sewer system. (Copy enclosed with Directors' agenda material) (4) Other business and communications, if any. (5) Consideration of motion to adjourn. COUNTY SANITATION DISTRICTS Af ORANGE COUNTY, CALIFORNIA ' January 9, 1992 1136AA ELus AVENUE Po N---AY VALLEY,CoUFOANIA 92722-2127 mnee2.2An STAFF REPORT Pacific Coast Highway Gravity Sewer (Plan 401 Gravity Sewer) Background The Pacific Coast Highway Gravity Sewer was built in 1936 and consists of approximately 1810 feet of 30-inch VCP, 3230 feet of 27-inch VCP, 3150 feet of 24-Inch VCP, and 2980 feet of 21-inch VCP and has 38 manhole structures. This sewer is used to transport wastewater collected jointly from the Cities of Newport Beach and southerly Costa Mesa's collection system to the CSDOC Treatment Plant No. 2. The original trunk sewer facilities built within District No. 5 were all constructed by the City of Newport Beach in 1936. The gravity system serving District No. 5 is essentially that portion of the system upstream from each of the three District pump stations in Pacific Coast Highway (Rocky Point, Lido and Bitter Point). 1989 Master Plan The 1989 Master Plan (Table 8-1) summarized reaches of the trunk system within District No. 5 that were deficient in capacity to convey master plan flows, including the subject gravity line. The hydraulic model analysis supporting the 1989 Master Plan indicated that the original Pacific Coast Highway Gravity Sewer system acquired from the City of Newport Beach is deficient. Table B-3 of the 1989 Master Plan recommended system improvements for the aforementioned deficiencies. This included upgrading the sizes of the Bitter Point Pump Station line from a 30-inch to a 42-inch, the Superior Avenue to Newport Avenue (Lido) reach from a 27-inch to a 39-inch, and the Rocky Point Pump Station to Dover Drive, from a 21-inch to a 30-inch line. (Between Newport Avenue and Rocky Point Pump Station the line is not hydraulically deficient). The estimated costs for implementation of the above replacement of the Pacific Coast Highway Gravity Sewer (Plan 401 Sewer) is $4,300,000 (1993 dollars). As the Directors are aware, several contracts were designed, awarded and completed for the replacement of the dual force main system in Pacific Coast Highway. While working on this system, the gravity sewer was exposed and found to be in very poor condition. As a result, the Directors approved studies to determine the condition of the gravity sewer. In May 1989, a contract was awarded to Robert Bein, William Frost 8 Associates A...� (RBF) for the preparation of a summary report, including the televising of the entire 11,000 foot gravity trunk sewer and the preparation of manhole surveys, to determine the condition and the extent of any required remedial work on the f gravity sewer in Pacific Coast Highway between Dover Drive and Bitter Point Pump Station. The report found that the majority of the, pipeline reaches have both major and minor circumferential cracks at the joints; several pipelines have severe longitudinal cracks at the crowns, and several pipelines appear to be broken and deformed. It also appears that the majority of the pipes are running at 3/4 to full capacity. This indicates that several reaches have already exceeded their carrying capacity and as future development occurs, the carrying capacity of this line will be exceeded. (These observations have been supported by the findings of the 1989 Master Plan study). In addition to the pipeline, each of the manholes inspected appeared to be in poor condition. The majority of the manholes had brick and grout deterioration along with separation. Bricks were missing and in need of repair. Only one of the manholes was observed to be leaking but the balance, based on their poor structural condition, could potentially start to leak in the near future. RBF's general condition summary is that the structural integrity of the trunk sewer, along with the majority of the manholes, are in poor condition and immediate replacement and/or repair is recommended. ERG/G5/37-2:SR1.1,-.2 �1 -2- MANAGERS AGENDA REPORT County Sanitation Districts P.O. Box 8127 • 10844 Ellis Avenue of Orange County, California Fountain Valley, CA 92 72 8-81 2 7 Telephone: (714) 962-2411 DISTRICT NO. 5 MEETING DATE Wednesday, January 15, 1992 at 11: 30 a.m. 3: STUDY SESSION RE BACKBONE PACIFIC COAST HIGHWAY SEWER SYSTEM. The Directors are well aware that many projects have taken place over the past eight years in Pacific Coast Highway. County Sanitation District No. 5 (CSD 5) has completed the rehabilitation or replacement of the dual force main system beginning at the Bay Bridge Pump Station, located on the east side of the Upper Newport Bay crossing of Pacific Coast Highway, to Treatment Plant No. 2 in Huntington Beach. (The last of this work was recently completed with the construction of a new second siphon under the Santa Ana River as part of the Corps of Engineers reconstruction of the Santa Ana River flood control channel. ) CSD 5 operates three sewers within Pacific Coast Highway; the dual force main system mentioned above plus a gravity sewer. (CSD 6 also owns capacity in these lines. ) The gravity sewer directs wastewater to one of three pump stations which then pressurize the water to enter the dual force main system for delivery to Plant No. 2. The gravity sewer, ranging in size from 30 inches internal diameter to 21 inches internal diameter, extends from Dover Drive to the Bitter Point Pump Station (at 59th [extended] ) . The gravity sewer was built by the City of Newport Beach in 1936. It has been known for sometime that the sewer would have to be replaced because of age and increased flows. The 1989 Master Plan estimated that the new gravity sewer would range from 42 inches to 30 inches in size with replacement cost estimated at $4.3 million. (CSD 6 will share this cost. ) Staff had budgeted the replacement for the period 1995-97 in previous budget estimates, however, the Master Plan estimated the work January 15, 1992 should be done in 1992-93. Recently, as part of the replacement of the dual force main system, staff uncovered the sewer and found it to be in poor structural condition. Because of this, the Directors last year authorized a television camera inspection of the sewer which, in fact, found that the 57 year-old sewer is in very poor condition. The Directors are well aware that in addition to the numerous sewer rehabilitation projects, Pacific Coast Highway itself has been rebuilt between the Santa Ana River and Newport Boulevard. The District wishes to proceed with replacement of the gravity sewer with minimal interference and disruption to the new Pacific Coast Highway corridor, and also to complete the sewer work easterly of Newport Boulevard prior to highway reconstruction planned by CALTRANS and the City of Newport Beach. Attached for the Directors review is a separate staff report providing further background information on the condition of the gravity sewer. At the meeting staff will review the status of the sewer, District alternative plans for replacement and CALTRANS/Newport Beach schedules for the rehabilitation of Pacific Coast Highway. J. Wayne Sylvester General Manager JWS:jt -2- �� COUNTY SANITATION DISTRICT NO.5 Per 1991-92 Budget 6]]/91 SCHEDULE OF DISTRICT COLLECTION SYSTEM PROJECTS A B C D E F G H I J K PROJECT TOTAL C.I.P. 1991-92 1992-93 1993-94 1994-95 1995.96 5-Year Total 1996-2001 10-Year Total 1 Pump Station Improvements 2 1.Bittar Paint and Rocky Point Pump Station Improvements, 5-32 l2l• 283,000 33.000 100,000 150.000 250.000 250,000 3 2'A' St., 14th St., and Lido Pump Station Improvements(3) 425,000 0 425,000 425,000 4 3.Impruvements to Bey Bridge Pump Station, 5-33(2) 2,145,000 145.000 500,000 1,S00,000 2.00%000 2,ODO,DD0 5 4.Corona del Mar Interim Pump Station Improvements, 5.40(2) " 208,000 8.000 200,000 200,ODO 200,000 6 Jamboree Ad Trunk Sewer Repair, 5-41 75,000 75,000 75,000 75,000 7 Improvements to Bayalde Drive Trunk Be..,, 5-343 (2)(3) 4,815,00D 215,000 3,500,000 1,100,000 4.601),000 4,600,000 ` 8 Connect Laterals on Beyeide Dq 5-342-1 50,000 50,000 50,000 50,000 9 Pump Station Telemetry Upgrade 150.000 150,000 150,000 150,000 10 Pump Station Reliability Provisions 600,000 0 (500,000 600,000 11 West Coast Highway Gravity Trunk Rehabilitation, Plan 401, 5.37.2(3) 3,284,000 109,000 25,000 150.000 2,500,000 2,675.000 500,000 3,175,000 12 Big Canyon Trunk Rehabilitation 13) 2,000.000 0 2.000.000 2,000,000 �13 Santa Ana River Siphon, A&B Trunks,5-39 807,000 57,000 700,000 50,000 750,000 750,000 14 South Coast Trunk Sewer, Phase 2, 5.35.2 42) " 1,525.000 25,000 300,000 1,000,000 200,000 1,500,000 1,500,000 15 Crystal Cove Pump Station, 5-36(2) •- 1.276.000 76,000 300,000 700.000 200,000 1,200,000 1,200,000 16 Miscellaneous Projects 750,000 75.000 75,000 75,000 75,000 75,000 375,000 375,000 750,000 17 GRAND TOTAL 18,393,000 668.000 5,950,000 4,575,000 5001000 225,000 2,575.000 13,825,000 3,900,000 1],725,000 ' Partially paid by District No.6 1. Master-planned facilities presently under construction •• Paid by IRWD 2. Master-planned facilities presently under design 3. Master-planned facilities scheduled for future desigNconstruuion DCSP5.%LS 12:21 PM COUNTY SANITATION DISTRICT NO.S ReNesd 1/15/92 SCHEDULE OF DISTRICT COLLECTION SYSTEM PROJECTS V7191 A B C D E F G H I J N PROJECT TOTAL C.I.P. 1991.92 1992-93 1993.94 1994-95 1995-96 5-Year Total 1996.2001 10-Year Total 1 Pump Station Improvements 2 1.Buter Point and Rocky Point Pump Station Improvements, 5-32121• 283.000 33,000 100,000 1WOOD 250,000 250,000 3 2JA' St., 14th St., and Lido Pump Station Improvements(3) 425,000 0 425.000 425,000 4 3.Impravements to Bay Bridge Pump Station, 5.33 12) 2,145,000 145,000 5D0,o00 1,500,000 2,000,000 2,000,000 5 4.Corona del Mar Interim Pump Station Improvements, 5-4012) •' 8,000 8.000 Station to be abandoned 0 0 6 Jamboree Rd Trunk Sewer Repair, 5-41 0 Combined with line 7 0 0 7 Improvement.to Bayside Drive Trunir Sewer, 5 34-3 (2)(3) 3,715,000 215,000 3,000,000 So0,000 3,500,000 3,500,000 8 Connect Laterals an Bayside Dr,5-34.2.1 0 Combined with line 7 0 0 9 Pump Station Telemetry Upgrade 150,000 1 S0,000 150,000 150,000 10 Pump Station Reliability Provisions 600,000 0 600,000 600,000 11 West Coast Highway Gravity Trunk Rehabilitation, Ran 401, 5-37-2 13) • 3.284.000 109,000 25,000 150,000 2.500,000 2,675,000 500,00o 3,175,000 12 Big Canyon Trunk Rehabilitation(3) 2.000.000 0 2,000,000 2,000,000 ,13 Santa Ana River Siphon, A&B Trunks, 5-39 457,000 57,000 400,000 400,octo 400,000 14 South Coact Trunk Sawer, Phase 2, 5.35.2(2) " 1,525,000 25,000 300,000 1,000,000 200.000 1.500.000 1,500,000 15 Crystal Cove Pump Station, 5.3612) •- 1,276,000 76,000 300,000 700,000 200,000 1,200.000 1,200,000 16 Miscellaneous Projects 750,000 75,000 75,000 75,000 75,000 75,000 375,000 375,000 750,000 17 GRAND TOTAL 16,618,000 668,000 4,850,000 2.575.000 1.975.000 75.000 2,575.000 12,050,000 3,900,000 15.9S0,000 Partially paid by District No.6 1. Master-planned facilities presently under constmction '• Paid by IRWD 2. Master-planned facilities presently under design 3. Master-planned facilities scheduled for future design/construction DCSPSA.XLS 11:30 AM MEETINGDATE January 15, 1992 TIME 11:30 A.M. DISTRICTS 5 DISTRICT 1 JOINT BOARDS (RICHARDSON)...GRISET ......._ (BEYER) ....................BARREM ..... (EDGAR) ........PUCKER...... (DENES) ....................BELL ......... (BEYER)..... UNIFORM, ....._— (AGE) ......................SOWMAN ..... (ROT"..........STANTON ..... (NORBY)....................CABIN ....... . . (FERRYMAN.....WANNER...... — (SCOTT) ....................COLLINS ...... DISTRICT R (PLUMMER) .................COX .......... MAN)......................CULVER ...... (HUNTER) .......PICKLER ......_ (NELSON,C.) ....... DUNLAP ...... (scam.........COLLINS ...... _ (PUCKEM..................EMAR ....... (BEYER).........SARREM ..... (HUNTER)...................EHRLE........ (DENES) ........BELL.......... _ (RICE)......................EVMS........ (NORBY) ........CATLN........ _ NAHONEY) .................FLOM........ (ROM).........MAHONEY..... _ (ROBRAILLE)................GREEN ....... _ . (CULVER) .......MAIN ......... _ (MeCLNE)...................ORIPM....... (PARKER) .......NELSOWC..... _ (RK:HARUSO4..............GRIBET ....... (DOWMEY).......NflVTON ...... (FRIED).....................GULLMSON ... — (GRISET) ........PUIDD ....... _ (PLUMMER) .................HART ......... _ . . (Rol"..........STANTON ..... _ (SILVA) .....................KELLY ........ (FRIED) .........WEDM ....... (WILSG" ...................IASZLO....... DISTRICT B (FLOM) ....................MAHONEY..... _ (C0.VER)...................MAN ......... _ (DOT80" .......SAPIEN ....... (RICMRDSO" ..............MAGUIGAN .... (ROBRAILLE) ....GREEN........ (PARKER)...................NELSON.C .... (AGE) ...........BtA MMN...... MNER) .......... ......NELSON.K..... _ (NOBBY) ........CATLN........ (DOWNEY) ..................NEWTON...... _ - - (SCOTT).........COLLINS; ...... (DUNLM)...................PARKER ...... (MAN) ..........CULVER......._ ),HUNTER)...................PIMER ...... NELSON.C.) ....DUNLAP......._ (HART) .....................PLUMMER..... (AIDE) ..........EVANS........— (EOGAB)....................RONTKRM .... (MAHONEY)......ROM........_ (EMAR)....................PUCKE ..... — R MsCUNEI .......GRIFFIN......._ (GRISET) ...................PULIDO ....... (V/LSO"........LASSO......._ (PULIDO) ...................RICMRDSON.. NUHARDSO"...McClUIGM ...._ (STAMOM I................ROTN......... MNE".........NELSON.K....._ (COX) ......................SANSONE ..... (HUNTER), .......PICKLER ......_ (GOT. ..................SAPIEN ....... (Rol"..........STANTON ....._ (HAMMOND).................SHERIDAN .... — (BATES).........SYLVU........_ (ROT" .....................STANTON ..... \1 DISTRICTS (MILL ERI....................SWAN ........ (JEMPSA) ....................SYLVIA ....... MARTI ..........PLUMMER..... (FERRYMAWRHEMICKMEADID .WNNER...... — (STANRxN) ......ROTH........._ (FRIED) ......................WEDM ....... — (COX)...........SNWONE .....J�— (MOULTON.PATTERSON) .....WNCHEU- .... — DISTRICTS — (SHERRIC" .....WAHNER...... (STAMOM ......ROTH......... (RUMMER)......HART ...... — DISTRICT STLS AVEEIER......... �s SF ... _ (PUCKETT) ......EDGAR........_ BROWN ............JLZ ANWAR ....... (RUDE) ........WAHNER ...... ANDERSON ........._ DEMIR........_ (BEYER).........BARREM .....— CLAWSON .......... FLEMING...... M _ (PLUMMER)......COX .......... DAES.............L_� HONENER..... _ (PULIM) ........PICHMDI .. GORMCA........._ HOUGH ....... _ (STAMON) ......ROTH........._ HASE),STAB ........_ HOWARD...... _ MAMAONO .....SHERIDAN..... HOMES ..........._ HUM......... _ DISTRICT 11 KYLE..............._ KNOPF........ _ UNDER............._ LEE .......... _ MOULTON. NELLOR ............ LINDSTROM ... PATTERSON)......VMCHELL....._ NELSON ............ LYNCH........ (SILVA)..........KELLY ........_ NMHOLS ........... SHAW ........ (ROT"..........STANTON ..... Dorm............. STONE........ _ _ RENESCU .........._ WASON ....... SIMPSON ...........�/YOUNG ....... STREET) ............VINCEN I/ 1iEWPO/jT — WINSOR ...........— L[JI.PJLu1,r 1[OIYA^ 04 @ R.C.E. UK,art WINSOR ............ e Jeff Staneiry norP.E. S Deputyepan oT _ C� _ L M IfF--• �j Utilities DepartmentY✓`^"��y"�"" 1[/PO RH`H _ P Lj YVW CITY OF NEWPORT BEACH = �y 3300 Newport Blvd.,Newport Beach.CA92659-1768 )vnA1 (714)699-3011 Fax(714)646-5204 COUNTY SANITATION DISTRICT NO. 5 - OF ORANGE COUNTY, CALIFORNIA MINUTES OF ADJOURNED REGULAR MEETING January 15, 1992 - 11:30 A.M. 10844 Ellis Avenue Fountain Valley, California Pursuant to adjournment of the regular meeting of January 8, 1992, the Board of Directors of County Sanitation District No. 5 of Orange County, California, met in an adjourned regular meeting at the above hour and date. The Chairman called the meeting to order at 11:30 a.m. The roll was called and the Secretary reported a quorum present. DIRECTORS PRESENT: Ruthelyn Plummer, Chairman, and Phil Sansone DIRECTORS ABSENT: Don R. Roth STAFF MEMBERS PRESENT: J. Wayne Sylvester, General Manager, Rita J. Brown, Board Secretary, Thomas M. Dawes and Gary G. Streed OTHERS PRESENT: Evelyn Hart, Ben Nolan, Jeff Staneart and Don Webb Status Report on District's sewer The Director of Engineering rehabilitation program for the reviewed the status of the backbone Pacific Coast Highway District's rehabilitation program sewer system for the backbone Pacific Coast sewer system. Mr. Dawes advised the Directors that many projects have taken place over the past eight years in Pacific Coast Highway. County Sanitation District No. 5 (CSD 5) has completed the rehabilitation or replacement of the dual force main system beginning at the Bay Bridge Pump Station, located on the east side of the Upper Newport Bay crossing of Pacific Coast Highway, to Treatment Plant No. 2 in Huntington Beach. (The last of this work was recently completed with the construction of a new second siphon under the Santa Ana River as part of the Corps of Engineers' reconstruction of the Santa Ana River flood control channel . ) He further reported that CSD 5 operates three sewers within Pacific Coast Highway; the dual force main system plus a gravity sewer. (CSD 6 also owns capacity in these lines.) The gravity sewer directs wastewater to one of three pump stations which then pressurize the water to enter the dual force main system for delivery to Plant No. 2. The gravity sewer, ranging in size from 30 inches internal diameter to 21 inches internal diameter, extends from Dover Drive to the Bitter �✓ Point Pump Station (at 59th [extended]). The gravity sewer was built by the City of Newport Beach in 1936. 01/15/92 DISTRICT 5 Mr. Dawes noted that staff has known for some time that the sewer would --_ have to be replaced because of age and increased flows. The 1989 Master Plan estimated that the new gravity sewer would range from 42 inches to 30 inches in size with replacement cost estimated at $4.3 million. (CSD 6 will share this cost.) He advised that the sewer replacement had previously been budgeted for the period 1995-97; however, the Master Plan had estimated that the work should be done in 1992-93. He further stated that recently, as part of the replacement of the dual force main system, staff uncovered the sewer and found it to be in poor structural condition. Because of this, the Directors last year authorized a television camera inspection of the sewer which, in fact, found that the 57 year-old sewer is in very poor condition. Mr. Dawes then showed a brief video of the damage and conditions inside the sewer. Mr. Dawes also reviewed a schedule of District collection system projects included in the 1991-92 budget, as well as an updated schedule which had been prepared that day by the Director of Finance. He briefly explained some of the reasons that the new schedule reflected a decrease in the estimated cost of some of the projects. The Director of Engineering pointed out that the Directors were well aware that in addition to the numerous sewer rehabilitation projects, Pacific Coast Highway itself has been rebuilt between the Santa Ana River and Newport Boulevard. He added that the District wished to proceed with replacement of the gravity sewer with minimal interference and disruption to the new Pacific Coast Highway corridor. They also hoped to complete the sewer work easterly of Newport Boulevard prior to highway reconstruction planned by CALTRANS and the City of Newport Beach. Staff also briefed the Board on the potential impact of the Governor's proposal to eliminate the Districts' property tax revenues on the Districts' financing. Discussion The Board entered into a lengthy discussion relative to the proposed rehabilitation program and the best timeframe to construct each of the projects, and coordination of the projects between the District, City of Newport Beach and CALTRANS. Directors also pointed out the pros and cons of doing the construction work at night versus during the day to avoid the busiest traffic times on Pacific Coast Highway. Directors asked staff to report back to the Board with plans to accelerate the necessary design of the needed repairs and sewer replacement projects in order to complete the work as soon as possible because of the poor condition of the gravity sewer. -2- 01/15/92 DISTRICT 5 Receive and file Staff Report Moved, seconded and duly carried: That the Staff Report dated January 9, 1992, relative to rehabilitation of the Pacific Coast Highway sewer system, be, and is hereby received and ordered filed. Adjournment Moved, seconded and duly carried: That this meeting of the Board of Directors of County Sanitation District No. 5 be adjourned to 7:30 p.m. , February 19, 1992. The Chairman then declared the meeting so adjourned at 1:10 p.m. , January 15, 1992. Secretary of the Board of Directors ai of County Sanitation District No. 5 -3- STATE OF CALIFORNIA) ) SS. COUNTY OF ORANGE ) Pursuant to California Government Code Section 54954 .2, I hereby certify that the Agenda for the Adjourned Regular Board Meeting of District No. X held on f , 1991 was duly posted for public inspection at the main lobby of the District' s offices on . q , 19q s.. IN WITNESS WHEREOF, I have hereunto set my hand this _94& day of 191&. Rita J. Brown, Secretary of the Board of Directors of County Sanitation District No. of orange County, California COUNTY SANITATION DISTRICTS Al ORANGE COUM. CALIFORNIA January 9, 1992 1e644 ELu9 AVENUE Po BOX e127 PoLIMYN VALLEY.CALIFORNIA 92729-9127 01419624411 STAFF REPORT FIL, In the Office of Lne Secretary Pacific Coast Highway Gravity Sewer County Sanhation D,,c,"(s) (Plan 401 Gravity Sewer) NO(S) S' JAN 15 1992 Background The Pacific Coast Highway Gravity Sewer was built in 1936 and consists of approximately 1810 feet of 30-inch VCP, 3230 feet of 27-inch VCP, 3150 feet of 24-inch VCP, and 2980 feet of 21-inch VCP and has 38 manhole structures. This sewer is used to transport wastewater collected jointly from the Cities of Newport Beach and southerly Costa Mesa's collection system to the CSDOC Treatment Plant No. 2. The original trunk sewer facilities built within District No. 5 were all constructed by the City of Newport Beach in 1936. The gravity system serving District No. 5 is essentially that portion of the system upstream from each of the three District pump stations in Pacific Coast Highway (Rocky Point, Lido and Bitter Point). 1989 Master Plan The 1989 Master Plan (Table 8-1) summarized reaches of the trunk system within District No. 5 that were deficient in capacity to convey master plan flows, including the subject gravity line. The hydraulic model analysis supporting the 1989 Master Plan indicated that the original Pacific Coast Highway Gravity Sewer system acquired from the City of Newport Beach is deficient. Table B-3 of the 1989 Master Plan recommended system improvements for the aforementioned deficiencies. This included upgrading the sizes of the Bitter Point Pump Station line from a 30-inch to a 42-inch, the Superior Avenue to Newport Avenue (Lido) reach from a 27-inch to a 39-inch, and the Rocky Point Pump Station to Dover Drive, from a 21-inch to a 30-inch line. (Between Newport Avenue and Rocky Point Pump Station the line is not hydraulically deficient). The estimated costs for implementation of the above replacement of the Pacific Coast Highway Gravity Sewer (Plan 401 Sewer) is $4,300,000 (1993 dollars). As the Directors are aware, several contracts were designed, awarded and completed for the replacement of the dual force main system in Pacific Coast Highway. While working on this system, the gravity sewer was exposed and found to be in very poor condition. As a result, the Directors approved studies to determine the condition of the gravity sewer. In May 1989, a contract was awarded to Robert Bein, William Frost 8 Associates (RBF) for the preparation of a summary report, including the televising of the entire 11,000 foot gravity trunk sewer and the preparation of manhole surveys, to determine the condition and the extent of any required remedial work on the gravity sewer in Pacific Coast Highway between Dover Drive and Bitter Point Pump Station. The report found that the majority of the. pipeline reaches have both major and minor circumferential cracks at the joints; several pipelines have severe longitudinal cracks at the crowns, and several pipelines appear to be broken and deformed. It also appears that the majority of the pipes are running at 3/4 to full capacity. This indicates that several reaches have already exceeded their carrying capacity and as future development occurs, the carrying capacity of this line will be exceeded. (These observations have been supported by the findings of the 1989 Master Plan study). In addition to the pipeline, each of the manholes inspected appeared to be in poor condition. The majority of the manholes had brick and grout deterioration along with separation. Bricks were missing and in need of repair. Only one of the manholes was observed to be leaking but the balance, based on their poor structural condition, could potentially start to leak in the near future. RBF's general condition summary is that the structural integrity of the trunk sewer, along with the majority of the manholes, are in poor condition and immediate replacement and/or repair is recommended. ENO/D5/37-2:SR1.1,-.2 -2- 14. , MANAGER'S AGENDA REr IT County Sanitation DistriAs o.� P.O.Box 8127.10844 Ellis Avenue of Orange County, California Fountain Valley,CA 92728.8127 Telephone: (714)962-2411 DISTRICT NO. 5 MEETING DATE Wednesday, January 15, 1992 at 11: 30 a.m. 3 : STUDY SESSION RE BACKBONE PACIFIC COAST HIGHWAY SEWER SYSTEM. The Directors are well aware that many projects have taken place over the past eight years in Pacific Coast Highway. County Sanitation District No. 5 (CSD 5) has completed the rehabilitation or replacement of the dual force main system beginning at the Bay Bridge Pump Station, located on the east side of the Upper Newport Bay crossing of Pacific Coast Highway, to Treatment Plant No. 2 in Huntington Beach. (The last of this work was recently completed with the construction of a new second siphon under the Santa Ana River as part of the Corps of Engineers reconstruction of the Santa Ana River flood control channel. ) CSD 5 operates three sewers within Pacific Coast Highway; the dual force main system mentioned above plus a gravity sewer. (CSD 6 also owns capacity in these lines. ) The gravity sewer directs wastewater to one of three pump stations which then pressurize the water to enter the dual force main system for delivery to Plant No. 2. The gravity sewer, ranging in size from 30 inches internal diameter to 21 inches internal diameter, extends from Dover Drive to the Bitter Point Pump Station (at 59th [extended] ) . The gravity sewer was built by the City of Newport Beach in 1936. It has been known for sometime that the sewer would have to be replaced because of age and increased flows. The 1989 Master Plan estimated that the. new gravity sewer would range from 42 inches to 30 inches in size with replacement cost estimated at $4. 3 million. (CSD 6 will share this cost. ) Staff had budgeted the replacement for the period 1995-97 in previous budget estimates, however, the Master Plan estimated the work t January 15, 1992 should be done in 1992-93. Recently, as part of the replacement of the dual force main system, staff uncovered the sewer and found it to be in poor structural condition. Because of this, the Directors last year authorized a television camera inspection of the sewer which, in fact, found that the 57 year-old sewer is in very poor condition. The Directors are well aware that in addition to the numerous sewer rehabilitation projects, Pacific Coast Highway itself has been rebuilt between the Santa Ana River and Newport Boulevard. The District wishes to proceed with replacement of the gravity sewer with minimal interference and disruption to the new Pacific Coast Highway corridor, and also to complete the sewer work easterly of Newport Boulevard prior to highway reconstruction planned by CALTRANS and the City of Newport Beach. Attached for the Directors review is a separate staff report providing further background information on the condition of the gravity sewer. At the meeting staff will review the status of the sewer, District alternative plans for replacement and CALTRANS/Newport Beach schedules for the rehabilitation of Pacific Coast Highway. - J. Wayne Sylvester General Manager JWS:jt -2- January 15, 1992 should be done in 1992-93 . Recently, as part of the replacement of the dual force main system, staff uncovered the sewer and found it to be in poor structural condition. Because of this, the Directors last year authorized a television camera inspection of the sewer which, in fact, found that the 57 year-old sewer is in very poor condition. The Directors are well aware that in addition to the numerous sewer rehabilitation projects, Pacific Coast Highway itself has been rebuilt between the Santa Ana River and Newport Boulevard. The District wishes to proceed with replacement of the gravity sewer with minimal interference and disruption to the new Pacific Coast Highway corridor, and also to complete the sewer work easterly of Newport Boulevard prior to highway reconstruction planned by CALTRANS and the City of Newport Beach. Attached for the Directors review is a separate staff report providing further background information on the condition of the gravity sewer. At the meeting staff will review the status of the sewer, District alternative plans for replacement and CALTRANS/Newport Beach schedules for the rehabilitation of Pacific Coast Highway. J. Wayne Sylvester General Manager JWS:jt -2- MANAGERS AGENDAR:_)RT ..� I , County Sanitation Districts P.O.Box 8127• 10844 Ellis Avenue of Orange County, California Fountain Valley,CA 9272MI 27 Telephone:(714) 962.2411 DISTRICT NO. 5 MEETING DATE Wednesday, January 15, 1992 at 11:30 a.m. 3 : STUDY SESSION RE BACKBONE PACIFIC COAST HIGHWAY SEWER SYSTEM. The Directors are well aware that many projects have taken place over the past eight years in Pacific Coast Highway. County Sanitation District No. 5 (CSD 5) has completed the rehabilitation or replacement of the dual force main system beginning at the Bay Bridge Pump Station, located on the east side of the Upper Newport Bay crossing of Pacific Coast Highway, to Treatment Plant No. 2 in Huntington Beach. (The last of this work was recently completed with the construction of a new second siphon under the Santa Kna River as part of the Corps of Engineers reconstruction of the Santa Ana River flood control channel. ) CSD 5 operates three sewers within Pacific Coast Highway; the dual force main system mentioned above plus a gravity sewer. (CSD 6 also owns capacity in these lines. ) The gravity sewer directs wastewater to one of three pump stations which then pressurize the water to enter the dual force main system for delivery to Plant No. 2. The gravity sewer, ranging in size from 30 inches internal diameter to 21 inches internal diameter, extends from Dover Drive to the Bitter Point Pump Station (at 59th [extended) ) . The gravity sewer was built by the City of Newport Beach in 1936 . It has been known for sometime that the sewer would have to be replaced because of age and increased flows. The 1989 Master Plan estimated that the new gravity sewer would range from 42 inches to 30 inches in size with replacement cost estimated at $4.3 million. (CSD 6 will share this cost. ) Staff had budgeted the replacement for the period 1995-97 in previous budget estimates, however, the Master Plan estimated the work COUNTY SANITATION DISTRICTS W ORANGE COUNTY. CALIFORNIA January 9, 1992 1a9AA ELLIS AVENUE Fa Sox 8127 FIXMraN vaLLM CALIFORNIA 92 728-812 7 17W966-2111 STAFF REPORT Pacific Coast Highway Gravity Sewer (Plan 401 Gravity Sewer) Background The Pacific Coast Highway Gravity Sewer was built in 1936 and consists of approximately 1810 feet of 30-inch VCP, 3230 feet of 27-inch VCP, 3150 feet of 24-inch VCP, and 2980 feet of 21-inch VCP and has 38 manhole structures. This sewer is used to transport wastewater collected jointly from the Cities of Newport Beach and southerly Costa Mesa's collection system to the CSDOC Treatment Plant No. 2. The original trunk sewer facilities built within District No. 5 were all constructed by the City of Newport Beach in 1936. The gravity system serving District No. 5 is essentially that portion of the system upstream from each of the three District pump stations in Pacific Coast Highway (Rocky Point, Lido and Bitter Point). 1989 Master Plan The 1989 Master Plan (Table 8-1) summarized reaches of the trunk system within District No. 5 that were deficient in capacity to convey master plan flows, including the subject gravity line. The hydraulic model analysis supporting the 1989 Master Plan indicated that the original Pacific Coast Highway Gravity Sewer system acquired from the City of Newport Beach is deficient. Table 8-3 of the 1989 Master Plan recommended system improvements for the aforementioned deficiencies. This included upgrading the sizes of the Bitter Point Pump Station line from a 30-inch to a 42-inch, the Superior Avenue to Newport Avenue (Lido) reach from a 27-inch to a 39-inch, and the Rocky Point Pump Station to Dover Drive, from a 21-inch to a 30-inch line. (Between Newport Avenue and Rocky Point Pump Station the line is not hydraulically deficient). The estimated costs for implementation of the above replacement of the Pacific Coast Highway Gravity Sewer (Plan 401 Sewer) is $4,300,000 (1993 dollars). As the Directors are aware, several contracts were designed, awarded and completed for the replacement of the dual force main system in Pacific Coast Highway. While working on this system, the gravity sewer was exposed and found to be in very poor condition. As a result, the Directors approved studies to determine the condition of the gravity sewer. In May 1989, a contract was awarded to Robert Bein, William Frost 8 Associates (RBF) for the preparation of a summary report, including the televising of the entire 11,000 foot gravity trunk sewer and the preparation of manhole surveys, to determine the condition and the extent of any required remedial work on the gravity sewer in Pacific Coast Highway between Dover Drive and Bitter Point Pump Station. The report found that the majority of the pipeline reaches have both major and minor circumferential cracks at the joints; several pipelines have severe longitudinal cracks at the crowns, and several pipelines appear to be broken and deformed. It also appears that the majority of the pipes are running at 3/4 to full capacity. This indicates that several reaches have already exceeded their carrying capacity and as future development occurs, the carrying capacity of this line will be exceeded. (These observations have been supported by the findings of the 1989 Master Plan study). In addition to the pipeline, each of the manholes inspected appeared to be in poor condition. The majority of the manholes had brick and grout deterioration along with separation. Bricks were missing and in need of repair. Only one of the manholes was observed to be leaking but the balance, based on their poor structural condition, could potentially start to leak in the near future. RBF's general condition summary is that the structural integrity of the trunk sewer, along with the majority of the manholes, are in poor condition and immediate replacement and/or repair is recommended. ENG/D5/37-2:SR1.1,-.2 -2-