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Old River Drainage/Seepage Channel Culvert Replacement Project

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State & Local

Contract Overview

Solicitation details, issuing organization, response deadlines, documents, and interested companies for this government contract opportunity.

AI Contract Overview

The project involves replacing a failed 24-inch corrugated metal culvert beneath the Mokelumne Aqueduct access road near Bixler in Contra Costa County, California, to prevent local flooding and safeguard the road’s structural integrity. The existing culvert has deteriorated, causing damage to the adjacent gravel road edges, and the replacement will install a 30-foot long high-density polyethylene pipeline of the same diameter to ensure full under-road coverage and reduce future erosion. The original alignment of the access road will be restored using a 3/4-inch aggregate base, with heavy equipment staged directly on the road during construction. All work will occur entirely within the East Bay Municipal Utility District’s right-of-way, eliminating the need for encroachment permits, though a Lake and Streambed Alteration Agreement from the California Department of Fish and Wildlife will be secured to comply with environmental regulations. Construction is timed to avoid the nesting bird season, with work scheduled to begin after September 15th and completed within five days during standard weekday business hours from 7:00 a.m. to 3:00 p.m. The project adheres to EBMUD’s standard environmental and safety protocols for all construction activities. The effort is part of routine infrastructure maintenance to protect the aqueduct’s access route, which is critical for operations and inspections. The project’s location is in the 94513 ZIP code area, and primary contact for coordination is Douglas A. Hooper, Superintendent of Aqueduct at EBMUD.

General Info

Replace 24-inch culvert with 30-foot HDPE pipe, restore road, avoid bird season, within EBMUD right-of-way.

Agency

California → East Bay Municipal Utility District

NAICS

237990 - Other Heavy and Civil Engineering ConstructionView NAICS

Place of Performance

Orwood Road, CA, 94513

Set-Aside

NONE

Documents

(1)

NOE Contra Costa Old River Drainage Culvert Replacement Project 2026-00215

PDF•notice-of-exemption

AI Contract Breakdown

Uniform Contract Format

Timeline

PostedJul 7

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Organization & Contact Information

AgencyCalifornia → East Bay Municipal Utility District

Contacts1 person available

OfficeN/A

Organization / Agency

California → East Bay Municipal Utility District

Office AddressN/A

Contacts

Douglas A. HooperSuperintendent of Aqueduct

contact@example.gov

+1 (555) 000-0000

Full Description

The purpose of the project is to provide the channel with a functional culvert to prevent local flooding and protect the integrity of the Mokelumne Aqueduct access road. The objective of the project is to replace the failed culvert and restore the original alignment of the access road. See Attachment A for additional information. Overview and Background The Project is located on the East Bay Municipal District (EBMUD) Mokelumne Aqueduct right-of-way (ROW), near Bixler in Contra Costa County. There are two drainage/seepage channels adjacent to the ROW's gravel access road, that parallel the Old River alignment. The channels store seepage water from the Delta levees, in addition to local stormwater run-off. The existing culvert on the west-side channel has failed and the edges of the overlying access road have deteriorated. Project Purpose and Objectives The purpose of the project is to provide the channel with a functional culvert to prevent local flooding and protect the integrity of the access road. The objective of the project is to replace the failed culvert and restore the access road's original alignment. Project Location The project is located on East Bay Municipal District Mokelumne Aqueduct right-of-way, near Bixler in Contra Costa County, see Figure 1a and Figure 1b. Project Characteristics The project will replace the existing 24-inch diameter corrugated metal culvert with a high-density polyethylene plastic pipeline. The 24-inch diameter will be retained, but the length will· be 30 feet, 10 feet longer than original installation. The additional length will ensure that the new installation crosses under the entire access road to prevent further erosion of the edges. The original road alignment will also be restored with a 3/4-inch aggregate base. Required heavy equipment will be staged on the access road. Permits All work will be conducted on EBMUD property, so no encroachment permits are necessary. A Lake and Streambed Alteration Agreement will be obtained from the California Department of Fish and Wildlife. Schedule Work is scheduled for after the nesting bird season, which ends on September 15th. The project is expected to be completed within five days. Work hours will be limited to weekdays with standard business hours of 7:00 a.m.to 3:00 p.m. EBMUD Practices and Procedures Standard construction environmental and safety practices applicable to all EBMUD construction projects have been incorporated into the project and will be implemented accordingly.