Manteca Granicus #50189040

City of Manteca Storm Drain Zone 36/Zone 39 Improvements Phase 1 – Outfall Construction

This opportunity involves major stormwater infrastructure improvements for the City of Manteca, focusing on outfall construction and related site work: - Government Buyer: - City of Manteca Department of Public Works (soliciting agency) - Project Scope: - Demolition of the Oakwood Lake Water District (OLWD) wastewater treatment plant - Removal and salvage of mechanical/electrical equipment - Removal and disposal of pond liner residuals and underground piping - Backfilling of treatment ponds - Relocation or installation of OLWD office trailer - Construction of a 48-inch storm drain force main (approx. 2,500 linear feet) - Construction of outfall structure with twin 30-inch outfall pipelines - Construction of emergency overflow connection to the City and emergency discharge from Lift Station No. 3 - Site grading, surface restoration, and installation of security fencing - Additive bid items: furnishing and installing two 15,000-gallon fiberglass emergency overflow storage tanks at Lift Station No. 4, including associated civil work - Products/Services Requested: - 48-inch storm drain force main (approx. 2,500 linear feet) - Twin 30-inch outfall pipelines - Two 15,000-gallon fiberglass emergency overflow storage tanks - Mobilization/demobilization, dewatering, cofferdam construction, sheeting/shoring/bracing, and other site/civil services - Unique Requirements: - Coordination with OLWD and RD-17 to avoid interference with ongoing operations and levee maintenance - Strict 300-day completion window due to environmental/in-water work constraints - Bidders must hold a valid Class A contractor license, provide bid guarantee, and furnish performance/payment bonds - Prevailing wage requirements apply - No specific OEMs or named vendors are identified in the solicitation documents.

Description

The City of Manteca is soliciting sealed bids for the Storm Drain Zone 36/Zone 39 Improvements Project Phase 1, focusing on outfall construction. The project includes demolition of the Oakwood Lake Water District wastewater treatment plant, construction of storm drain force mains, outfall structures, site grading, and restoration. A mandatory pre-bid meeting and job walk are scheduled, and bidders must submit questions by April 13, 2026. The estimated construction cost is between $7.0 and $7.8 million, with a completion timeline of 300 calendar days from the notice to proceed.

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