Unofficial Notice of Invitation to Bid (NIB)

Oro Loma Sanitary District is seeking bids from qualified and interested contractors for the following project titled, SEWER COLLECTION SYSTEM PIPELINE REHABILITATION AND REPLACEMENT PROJECT PHASE 9, identified under Solicitation ID: 45-146.09. Work is to be performed near 2655 Grant Ave, San Lorenzo, CA 94580, USA in Alameda County.

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General Project Description

This project, Phase 9 of the Sewer Collection System Pipeline Rehabilitation and Replacement, involves extensive civil engineering work. The primary scope includes trenchless installation for replacing 16,014 linear feet of existing 6 and 8-inch vitrified clay pipe (VCP) with new 8-inch High-Density Polyethylene (HDPE) pipe, and 1,384 linear feet of 8-inch VCP with 10-inch HDPE pipe. It also encompasses manhole re-channelization and the reconnection of all laterals. The project requires ground disturbance, trenching (both trenchless and open-cut methods), traffic control, excavation, dewatering, temporary utility support, removal and disposal of old infrastructure and spoils, new manhole construction and demolition, lateral reconnections, and comprehensive surface restoration including asphalt concrete paving, slurry seal, concrete sidewalks, curbs, gutters, and pavement markings.

General Bid Items

Quantity: 1 Unit: LS Work Item: Mobilization - Includes preparatory work, establishing field offices, locating and verifying utilities, pre-construction photo/CCTV, dye testing, contract schedule updates, shop drawings, and all initial operations.
Quantity: 1 Unit: LS Work Item: Sheeting, Shoring, Bracing - Covers labor, materials, equipment, and incidentals for trench protection and open excavation in conformance with safety orders.
Quantity: 1 Unit: LS Work Item: Traffic Control - Includes all measures for temporary control, detours, and staging during construction per contract documents.
Quantity: 14250 Unit: LF Work Item: 8-inch Trenchless SDR-17 HDPE Pipe Installation – Provision and trenchless installation into existing 6 or 8-inch VCP, including clearing, grubbing, excavation, dewatering, temporary utility support, bypass pumping, removal and replacement of existing Asphalt Concrete (AC) paving and aggregate base, compaction, surface restoration, testing, and disposal.
Quantity: 1190 Unit: LF Work Item: 10-inch Trenchless SDR-17 HDPE Pipe Installation – Provision and trenchless installation into existing 8-inch VCP, including clearing, grubbing, excavation, dewatering, temporary utility support, bypass pumping, removal and replacement of existing fencing, disposal of trench spoils and old pipe/manholes/risers, compaction, surface restoration, testing, and replacement of AC paving and aggregate base.
Quantity: 1940 Unit: LF Work Item: Additional Trenching After Trenchless Pipe Installation - Trenching along main to remove sags or address obstacles, including clearing, grubbing, excavation, dewatering, temporary utility support, bypass pumping, removal and replacement of existing fencing, disposal of trench spoils and old pipe/manholes/risers, compaction, surface restoration, testing, replacement of AC paving and aggregate base and slurry seal, and disposal.
Quantity: 1764 Unit: LF Work Item: 8-inch SDR17 HDPE Open Cut Pipe Installation – Provision and open-cut installation of 8-inch SDR-17 HDPE gravity sewer pipe, including clearing, grubbing, excavation, dewatering, temporary utility support, bypass pumping, removal and replacement of existing fencing, disposal of trench spoils and old pipe/manholes/risers, compaction, surface restoration, testing, and replacement of AC paving and aggregate base and slurry seal.

NAICS Classification

237110 – Water and Sewer Line and Related Structures Construction, 238910 – Site Preparation Contractors, 237310 – Highway, Street, and Bridge Construction

Records and Due Date

This bid opportunity was entered into BidAmerica on December 9, 2025, and was last updated on December 17, 2025. All bids and/or proposals are due on January 13, 2026.

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All bidders are responsible for reviewing and verifying all official bid documentation directly from the issuing agency. BidAmerica aggregates public bid information for advertisement purposes for contractors and government agencies convenience. This Notice of Invitation to Bid is for reference purposes only and is not an official or complete representation of any documents issued by Oro Loma Sanitary District. BidAmerica does not guarantee the accuracy, completeness, or timeliness of any information displayed and shall not be held liable for any errors, omissions, misinterpretations, or damages resulting from reliance on this summary. Contractors must obtain all official information—including plans, specifications, addenda, deadlines, submission requirements, qualifications, and bidding conditions—directly from Oro Loma Sanitary District prior to bidding.