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Home My WebLink About2008-05-06; City Council; 19425; Vista/Carlsbad interceptor sewer reaches VC13-VC15CITY OF CARLSBAD - AGENDA BILL AB# 19i425 MTG. 5/06/08 DEPT. ENG APPROVAL OF PLANS AND SPECIFICATIONS AND AUTHORIZATION TO ADVERTISE TO RECEIVE BIDS FOR VISTA/CARLSBAD INTERCEPTOR SEWER, REACHES VC13-VC15, MANHOLE REHABILITATION, PROJECT NO. 3949 DEPT. HEACrpl^J^ CITYATTY. /f2?> CITY MGR. (/A— RECOMMENDED ACTION: Adopt Resolution No. 2008-130 approving plans and specifications and authorizing the City Clerk to advertise to receive bids for the Vista/Carlsbad Interceptor Sewer, Reaches VC13-VC15 Manhole Rehabilitation, Project No. 3949. ITEM EXPLANATION: The Vista/Carlsbad (V/C) Interceptor Sewer was constructed in 1965 and is jointly-owned by the City of Vista and the City of Carlsbad. The alignment, approximately eight miles in length within the City of Carlsbad, extends from just west of the intersection of College Boulevard and Highway 78 to the Encina Water Pollution Control Facility (Encina). The V/C interceptor sewer is divided into reaches numbered VC1 through VC16. Reaches VC1 through VC11A have been replaced or rehabilitated in recent years, with the exception of the Buena Vista Force Main (Reach VC4), which is currently in design for replacement. The City has recently completed a study to investigate alternatives and develop a design concept to replace Reaches VC11B through VC15 because of their undersized capacity and/or deteriorated condition. The preferred design concept includes replacement of the trestle bridge across Agua Hedionda Lagoon with a new concrete bridge (VC11B), and construction of a new lift station approximately 50-feet east of the current facility with a new force main (VC12). The pipeline in Reaches VC13 through VC15 is in good condition but undersized for future flows. The preferred design for these lower reaches includes constructing a parallel gravity pipeline and continuing to utilize the existing Reaches VC13 through VC15. Together the parallel pipelines will provide capacity for the ultimate future flows. The existing gravity interceptor sewer will also maintain existing sewer connections. While the PVC lined pipeline was found to be in good condition, a total of 27 manholes in Reaches VC13 through VC15 are severely corroded and require immediate attention. In consideration of the significant environmental permitting and coordination issues for the bridge, lift station and new pipeline, construction of the new improvements is expected to occur no earlier than January 2010. The manhole rehabilitation portion of the project has, therefore, been separated into its own construction contract in an effort to expedite the improvements and eliminate the risk of a manhole failure. City staff has prepared plans and specifications for the rehabilitation of 27 existing manholes on Reaches VC13 through VC15. The project drawings and contract documents are on file in the Public Works-Engineering Department. The manhole improvements are consistent with the City's 2003 Sewer Master Plan. Staff recommends approving the plans and specifications and authorizing the City Clerk to advertise for bids for the Vista/Carlsbad Interceptor Sewer, Reaches VC13-VC15, Manhole Rehabilitation, Project No. 3949. FOR CITY CLERKS USE ONLY. COUNCIL ACTION: APPROVED DENIED CONTINUED WITHDRAWN AMENDED D D D D CONTINUED TO DATE SPECIFIC CONTINUED TO DATE UNKNOWN RETURNED TO STAFF OTHER -SEE MINUTES D D D D DEPARTMENT CONTACT: Mark Biskup, (760) 602-2763, mbisc@ci.carlsbad.ca.us Page 2 ENVIRONMENTAL IMPACT: A Notice of Exemption was filed on June 1, 2007 for EA 07-01-Vista-Carlsbad Interceptor Sewer Reaches 11B-15 Access Hole Replacement, in compliance with Section 21152b of the Public Resources Code (California Environmental Quality Act) by the City of Carlsbad's Assistant Planning Director. FISCAL IMPACT: PROJECT COST SUMMARY FOR THE DESIGN, ENVIRONMENTAL AND CONSTRUCTION PHASE OF THE V/C SEWER MANHOLE REHABILITATION (PROJECT NO. 3949) DESIGN PHASE Environmental for Manholes (Planning Systems) Engineering Staff (Project Design and Management) Manhole/Pipeline Assessment Report (Affordable Pipeline) Miscellaneous DESIGN SUBTOTAL CONSTRUCTION PHASE Engineer's Construction Cost Estimate with 10% Contingency Construction Management and Inspection (Estimated) CONSTRUCTION SUBTOTAL TOTAL PROJECT COST (Manhole Rehabilitation)* Planning & Design Costs to Date (Lift Station, Pipeline and Bridge) Total Estimated Cost Through Current Phase CURRENT APPROPRIATION $11,790 $10,000 $16,290 $1,214 $39,294 $398,090 $30,000 $428,090 $467,384 $549,801 $1,017,185 $1,800,000 *Vista's share of Total Project Cost is $274,276 and Carlsbad's share is $193,108. Sufficient funds are available for the completion of the manhole rehabilitation construction. The remaining funds will be applied to the new interceptor sewer improvements. The total amount budgeted in the Capital Improvement Program for all project costs for Reaches VC11B-VC15 and the lift station replacement is approximately $38.5 million. All project-related costs will be shared between the City of Carlsbad and the City of Vista as described in an existing agreement for ownership, operation, and maintenance between the two cities. Carlsbad's cost share of the project is funded from the Sewer Connection Fee Fund. EXHIBITS: 1. Location Map. 2. Resolution No.2008-130 approving plans and specifications and authorizing the City Clerk to advertise bids tor the Vista/Carlsbad Interceptor Sewer, Reaches VC13-VC15 Manhole Rehabilitation, Project No. 3949. LOCATION MAP Vista Meter Station Begin V/C Interceptor Buena Vista Lift Station Reach VC11B Lagoon Crossing Existing Agua Hedionda Lift Station VC13 THROUGH VC15 PROJECT LOCATION VC11BthruVC15 VC1 thruVCHA Not a Part of Project Water Body VC16 & Encina Water Pollution Control Facility Parcel Boundary PROJECT NAME: VISTA/CARLSBAD INTERCEPTOR SEWER MANHOLE REHABILITATION REACHES VC13 THROUGH VC15 PROJECT # CP 3949 EXHIBIT 1 1 RESOLUTION NO. 2008-130 2 A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF 3 CARLSBAD, CALIFORNIA, APPROVING PLANS AND SPECIFICATIONS AND AUTHORIZATION TO ADVERTISE TO 4 RECEIVE BIDS FOR VISTA/CARLSBAD INTERCEPTOR SEWER REACHES VC13 THROUGH VC15 MANHOLE REHABILITATION, 5 PROJECT NO. 3949. 6 WHEREAS, the City Council of the City of Carlsbad, California, desires to rehabilitate 7 27 existing manholes in Reaches VC13 through VC15 in the Vista/Carlsbad Interceptor Sewer in 8 conformance with the Sewer Master Plan; and 9 WHEREAS, the plans and specifications for furnishing of all labor, materials, tools, 10 equipment, transportation, and other expenses necessary or incidental to the Vista/Carlsbad 11 Interceptor Sewer Reaches VC13-VC15 Manhole Rehabilitation, Project No. 3949, have been 12 prepared and are on file in the Public Works-Engineering Department of the City of Carlsbad and 13 are incorporated herein by reference; and 14 WHEREAS, a Notice of Exemption was filed on June 1, 2007 in compliance with Section 15 21152b of the Public Resources Code (California Environmental Quality Act) by the City of 16 Carlsbad's Assistant Planning Director; and 17 WHEREAS, funds in the Sewer Connection Fee Fund are sufficient for the project. 18 NOW, THEREFORE, BE IT RESOLVED by the City Council of the City of Carlsbad, 19 California, as follows: 20 1 • That the above recitations are true and correct. 21 2. That the plans, specifications, and contract documents for the Vista/Carlsbad 22 Interceptor Sewer Reaches VC13-VC15 Manhole Rehabilitation, Project No. 3949, are on file in 23 the Public Works-Engineering Department of the City of Carlsbad and are hereby approved. 24 3. The City Clerk of the City of Carlsbad is hereby authorized and directed to publish, 25 in accordance with state law, a Notice to Contractors Inviting Bids for the construction of the Vista/Carlsbad Interceptor Sewer Reaches VC13-VC15 Manhole Rehabilitation, Project No. 3949, in accordance with the plans, specifications, and contract documents referred to herein. 28 '" 1 2 3 4 5 6 7 8 9 10 11 i ^12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 PASSED, APPROVED AND ADOPTED at a Regular Meeting of the City Council of the City of Carlsbad on the 6th day of May, 2008, by the following vote to wit: AYES: Council Members Lewis, Kulchin, Hall, Packard and Nygaard. NOES: None. ABSENT: None. 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