This Government Contract opportunity from California was posted on June 18, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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Independent Cost Estimating for Wastewater Infrastructure Projects

Closed

State & Local

Submission Closed07/30/2026, 06:00:00 PM UTC

Contract Overview

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

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NAICS: 541330

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about 3 hours ago

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in 28 days

AI Contract Overview

The Orange County Sanitation District is seeking a subcontractor to provide independent cost estimates for wastewater infrastructure projects throughout all design phases. The scope of work encompasses a variety of assets, including treatment facilities, pump stations, and pipelines. Selected providers must deliver detailed basis of estimates and clear assumptions, utilizing industry tools such as HeavyBid to ensure accuracy. This subcontract opportunity is categorized under NAICS code 541330 and will be performed in Fountain Valley, California. Interested parties must submit their responses by July 30, 2026, following the posting date of June 18, 2026.

General Info

Subcontractor needed for wastewater infrastructure cost estimates in Fountain Valley by July 30, 2026.

Agency

California → ORANGE COUNTY SANITATION DISTRICT

NAICS

541330 - Engineering Services

Place of Performance

Fountain Valley, CA, 92708, USA

Set-Aside

NONE

Documents

This scope was carved out of PSA2026-002.

The full solicitation package (5 documents), including the RFP, is on the prime solicitation, not on this scope.

View the prime solicitation

COST ESTIMATING SERVICES

AI Contract Breakdown

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Timeline

PhaseClosed

PostedJun 18

subcontract

Response DeadlineJul 30

Deadline has passed

Submission Closed

07/30/2026, 06:00:00 PM UTC

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Organization & Contact Information

AgencyCalifornia → ORANGE COUNTY SANITATION DISTRICT

ContactsNo contacts available

OfficeN/A

Organization / AgencyCalifornia → ORANGE COUNTY SANITATION DISTRICT

Office AddressN/A

ContactsNo contact information available

Full Description

Provide independent cost estimates for OC SAN’s wastewater infrastructure projects across all design phases, including pipelines, pump stations, and treatment facilities. Deliverables include basis of estimates, assumptions, and use of tools like HeavyBid.