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WPCP Rehab Award of Contract (Amoroso) 2 July 5, 2011 BACKGROUND The City owns and operates a sewage treatment facility on 12 acres of land known as the Water Pollution Control Plant (WPCP) located at 3000 Davis Street. The WPCP receives residential, commercial, and industrial wastewater from two - thirds of the city. The WPCP was originally constructed in 1938 and several expansions and modifications have occurred since then. The facility was designed to treat up to 7.6 million gallons per day (mgd) Average Dry Weather (ADW) flow and 22.3 mgd Average Wet Weather (AWW) flow. Recent studies have shown that to maintain the same flow, several facilities and equipment will need upgrades, rehabilitation, or replacement. These improvements must be made to maintain a reliable operation and meet increasingly stringent regulatory requirements to avoid expensive fines. The project will restore the capacity and function of the WPCP to 7.6 mgd ADW flow by improving various existing facilities and by adding new facilities. The major work associated with the project consists of the construction of a headworks and influent pump station, one primary clarifier, Primary Effluent Flow Equalization Facilities, including a three million gallon primary storage pond, a fixed film reactor (FFR) and Lift Station, bio- filter facilities for odor control and replacement of the facility's electrical distribution system. In addition, the project will construct other support facilities, such as pump stations, flow control structures, an electrical building and back -up generator; and rehabilitate other existing systems, including two primary clarifiers, two secondary clarifiers, two digesters, and an effluent pump station. The Administration Control Building will be upgraded and expanded for improved services, improved laboratory facilities, better accommodation of the needs of the men and women who work at the plant, and to comply with Americans with Disabilities Act (ADA) requirements. Analysis Bids were opened on April 13, 2011. Eight bids were received ranging from $40,127,000 to $49,780,000. S. J. Amoroso Construction Company, Inc. was the lowest responsible bidder. The engineer's estimate for construction was $48,553,000. Staff submitted the required bid documents to the State Water Resources Control Board ( SWRCB) for review and received confirmation from the SWRCB that the bid documents are in compliance with the financing requirements. Staff has also verified that the contractor is in good standing through the Contractors State License Board's website. In association with the construction phase of the project, the City requires a construction support contract to address technical issues during construction. Carollo Engineers provided design consultant services for the design phase of the project and provided exceptional service. It is therefore recommended that Carollo Engineers continue to provide assistance with the interpretation of the construction documents during construction. Its services will include: • . Review and comment on construction schedule • Respond to contractor's requests for information (BFI's) • Respond to contractor's requests for clarification on construction documents • Review of material submittals and shop drawing submittals