In accordance with Drawings and Specifications prepared by Carollo Engineers, the Work includes furnishing of all labor, materials, tax, equipment, incidentals and services for the construction and completion of the Screw Press Relocation Project. The Work includes but is not limited to: Disassembly and inspection of existing screw press dewatering system; 2) Replacement of select mechanical components on the screw press system including screw press motor and covers, flocculation tank agitator and motor, and headbox level transducer; 3) Reassembly and recommissioning of screw press dewatering system at new location on the Equalization Structure; 4) Installation of new digested sludge feed pump, digested sludge piping and appurtenances; 5) Demolition of existing digested sludge feed pump, polymer feed system and associated piping; 6) Installation of new polymer feed system at Equalization Structure and relocation of existing polymer tote; 7) Installation of screw press dewatering system platform and repairs to existing screw press floor; 8) Installation of 1W/3W piping to screw press and polymer feed systems; 9) Electrical, instrumentation, and controls improvements, including screw press panel modifications, existing PLC modifications, new conduits and pull boxes, and lighting modifications; 10) Additional work as needed to construct a complete and operational project as specified in these Contract Documents. Add one cross tie and two valves to allow diversion of disc filter backwash flow.
Flow in this line can be stopped for no more than 1 hour. Consequently, a mechanical
joint must be used for final tie-in. All piping other than the tie-in shall be solvent
welded. All solvent welds must be allowed a 6 hour minimum cure time.
Valves and piping shall be supported with 316 SS pipe hangers. Provide support,
including lateral support, at all valves and every 6' on piping. Anchor locations shall
be field verified with the District in advance to avoid hitting conduits.
o Provide 2 plug valves for sewer service as specified in Section 15116.
o All piping shall be 6" Schedule 80 PVC.
o Mechanical Joint shall be Megalug with epoxy coating and 316 stainless steel
hardware. Submit for approval in advance.
o Remove spool piece and provide 2 - 6" Schedule 80 PVC blinds on existing
flanges. Location of spool is above the causeway (easy access). Return spool
piece to District.
o All hardware shall be 316 SS. Each Bid must also be accompanied by security in the form of a Bidder's Bond issued by a corporate surety, a certified check, or cashier's check payable to the District, or cash for an amount not less than ten percent (10%) of the Total Bid Price. The successful Bidder shall be required to execute a Material and Labor Payment Bond and Performance Bond, issued by a corporate surety, in conformance with the requirements set forth in the Contract Documents, each for not less than one hundred percent (100%) of the Contract Price. The Contract Time for the completion of all the Work of the Project is 300 (Three Hundred) calendar Days. Inquiries regarding further information about the Project may be directed to Kevin Rahman, P.E, District Engineer at kevin@smcsd.net. Bidders and their proposed subcontractors shall hold such licenses as may be required by the laws of the State of California for the performance of the work specified in the Contract Documents. Bidders bidding as the prime Contractor shall possess a valid California Contractor's General Engineering License "A" at the time of contract award and throughout the contract term. The Contractor will also be required to ensure that all subcontractors working on this project are holding valid licenses suitable for their trade.
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