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Report regarding a motion to accept the construction improvements of Advanced Chemical Transport Inc. for the Oyster Point Marina Fuel Tank and Fueling Station Removal Project (pf2001) as complete in accordance with plans and specifications (Total Construction Cost $242,204.60). (Dave Bockhaus, Deputy Director of Public Works)
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RECOMMENDATION
Recommendation
It is recommended that the City Council, by motion, accept the construction improvements of Advanced Chemical Transport Inc. for the Oyster Point Marina Fuel Tank and Fueling Station Removal Project (pf2001) as complete in accordance with plans and specifications (Total Construction Cost $242,204.60).
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BACKGROUND/DISCUSSION
On July 24, 2019, the City Council awarded a construction contract to Advanced Chemical Transport, Inc. (DBA ACT Enviro) of San Jose, California, in an amount not to exceed $215,950 for the Oyster Point Marina Fuel Tank and Fueling Station Removal Project. Given that the location of the underground storage tank (UST) site at Oyster Point was very challenging due to underlying landfill and proximity of underground fuel lines in the tidal zone, and given that the City has various redevelopment projects underway at Oyster Point, the San Mateo County Environmental Health Department (SMCEHD) allowed the City to perform the closure of the fuel tank site in two phases. The first phase generally included a UST and Fuel Dispenser Removal Project during the summer of 2020 and the second phase generally included Fuel Line Removal Projects to be completed prior to the end of 2024.
The Phase 1 scope of work completed by ACT Enviro included the following:
• Cleaned, inerted, and removed the two existing 10,000-gallon fuel tanks.
• Removed the fuel dispensers from the marina docks.
• Collected soil samples at 20 foot intervals along the entire length of the existing fuel lines (approx. 755’ in length). Soil analytical testing was performed under a separate on-call contract with the City.
• Drained remaining fuel from underground fuel lines.
• Removed two underground fuel lines in Area “B” (see Location Map) within the Kilroy Oyster Point redevelopment project area.
• Capped all remaining fuel lines to temporarily close them in place for future removal as part of Phase 2.
During construction, the Regional Water Quality Control Board and the San Mateo County Environmental Health Department approved the requirements for backfilling the tank pits and fuel line trenches. The approvals included the ability to reuse the existing clean excavated soil for backfill material and the installation of a new clay cap for the landfill. The environmental soil testing performed confirmed that the fuel tanks were not leaking which enabled all the excavated soil from the tank pits to be reused as backfill. However, the soil testing along the fuel lines confirmed that the lines were leaking in several locations and therefore required the removal and disposal of contaminated soil material from the fuel line trenches. The Engineering Division, with the assistance of West Coast Code Consultants, Inc., inspected the work and found the project to be complete in accordance with the contract documents and regulatory requirements. Project location map and construction photos are included as Attachments 1 and 2, respectively, of this staff report.
FISCAL IMPACT
This project is funded by the General Fund and is included in the City of South San Francisco’s Fiscal Year 2019-20 Capital Improvement Program (Project No. pf2001). The total construction cost incurred for the contract with ACT Enviro is summarized as follows:
Projected Actual
Construction Contract, ACT Enviro $ 215,950.00 $ 215,950.00
Construction Contingency (25%) $ 54,000.00 $ 26,254.60
Total Construction Budget $ 269,950.00 $ 242,204.60
RELATIONSHIP TO STRATEGIC PLAN
Approval of this action will contribute to the City’s Strategic Plan Priority Area 2, Quality of Life, Initiative 2.2 by promoting bike paths, pedestrian ways, and multi-modal transportation options.
CONCLUSION
Staff recommends acceptance of the project as complete. Upon acceptance, a Notice of Completion will be filed with the County of San Mateo Recorder’s office. At the end of the thirty-day lien period, the retention funds will be released to the Contractor after the City receives the one-year warranty bond.
Attachments:
1. Project Location Map
2. Construction Photos
3. Presentation