This Government Contract opportunity from California was posted on September 1, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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Hydrologist / Water Quality Consultant

Closed

State & Local

Submission Closed09/22/2026, 10:00:00 PM UTC

Contract Overview

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

Active Opportunities Like This One

NAICS: 541620

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DIBBS

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Climate Change Vulnerability Analysis for Live Oak Canal and Gilsizer Slough Drainage Districts

Solicitation # 20261027054

The Sutter County Development Services Department is soliciting proposals for a professional consultant to perform a climate change vulnerability analysis for the Live Oak Canal and Gilsizer Slough Drainage Districts in Yuba City, California. The project requires a comprehensive evaluation of existing roadway crossings, including culverts and bridges, and their connected open channels to determine their ability to convey anticipated flows based on the latest state climate and precipitation prediction models. Key tasks include conducting a structural stability and erosion potential assessment, performing a condition survey of the drainage system, importing survey data into the County's GIS system, and producing a Final Hydraulics Report and a Vulnerability Analysis report for approval by the Sutter County Board of Supervisors. Proposals are due by November 24, 2026, and will be evaluated based on project understanding, scope of work, project manager qualifications, demonstrated competence, and client references. Notably, cost proposals are not required during the initial phase; the top-ranked consultant will submit a cost proposal following a scoping meeting. The contract requires compliance with California Prevailing Wage Laws and DIR registration. The final project acceptance by the Board of Supervisors is tentatively scheduled for April through May 2028. Invoices for services are payable within thirty days of approval, and the project is managed by Neal Hay, Director of Development Services.

Sutter County Development Services Department

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Environmental Review and Permitting SupportThe Environmental Review and Permitting Support subcontract is a small business set-aside opportunity under the Department of the Interior for the U.S. Fish and Wildlife Service. The selected contractor will perform environmental screenings for prime contractors, focusing on reviewing designs for potential impacts on wetlands and protected species. Key responsibilities include preparing documentation for NEPA compliance and utilizing GIS software to identify necessary permits for parking and roadway expansions. Deliverables for this engagement include compliance checklists, permit applications, and detailed environmental assessment reports. While not mandatory, a Certified Environmental Professional designation is preferred for this role. Interested parties must submit their responses by November 10, 2026, in accordance with the solicitation guidelines for NAICS code 541620.

Fws Contracting Activity

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HazMat Documentation and Safety Data ManagementThis subcontract for HazMat Documentation and Safety Data Management supports prime contractors on NAVSUP Weapon Systems Support projects by ensuring the compliant handling of hazardous materials. The scope of work involves identifying hazardous materials according to FED STD 313 and OSHA 29 CFR 1910.1200 standards, providing GHS compliant product labels, and delivering completed Safety Data Sheets. Additionally, the contractor must ensure all air shipments adhere to NAVSUP PUB 505 and AFMAN 24-204 regulations. Managed under NAICS code 541620 for the Department of Defense, this opportunity was posted on October 28, 2026, with a response deadline of November 27, 2026. The primary objective is to maintain rigorous safety documentation and regulatory compliance for hazardous materials managed by the agency.

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Asbestos Air Monitoring and Four-Stage Clearance ServicesThis subcontract for Staffordshire County Council involves providing specialized asbestos air monitoring and four-stage clearance services for facility projects. The selected provider will support prime contractors by conducting emergency response air monitoring, sampling for fiber presence, and performing final clearance testing using air sampling pumps. The primary deliverables for this engagement include detailed air monitoring reports and official Four-Stage Clearance Certificates. To qualify for this contract, the service provider must hold UKAS accreditation to ISO/IEC 17025 standards. Interested parties must submit their responses by the deadline of November 24, 2026, at 12:00 PM. The contract falls under NAICS code 541620 and is focused on ensuring safety and regulatory compliance following asbestos removal activities.

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Asbestos Surveying and Reinspection ServicesThis subcontract for Asbestos Surveying and Reinspection Services involves performing comprehensive asbestos surveys for prime contractors working on Staffordshire County Council property projects. The scope of work includes conducting Management Surveys, Refurbishment and Demolition surveys, and the reinspection of identified asbestos-containing materials using specialized sampling and site inspection tools. The selected provider is responsible for delivering detailed survey reports and maintaining accurate reinspection records. To be eligible, the contractor must hold UKAS accreditation to ISO/IEC 17020. The solicitation was posted on October 28, 2026, with a response deadline of November 24, 2026. This opportunity falls under NAICS code 541620 and is managed by Staffordshire County Council.

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Environmental Expert Witness ServicesThis subcontract for Environmental Expert Witness Services involves providing professional opinions and expert testimony for prime contractors working on environmental projects for the Borough Council of Kings Lynn and West Norfolk. The selected provider will act as an expert witness during legal proceedings or public inquiries, delivering written statements and oral testimony based on environmental evidence bases and Habitats Regulations Assessment findings. Qualified candidates must possess recognized professional standing in planning law or environmental science. Interested parties must submit their responses by November 25, 2026, in accordance with the solicitation posted on October 28, 2026.

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POSTED

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Habitat Regulations Assessment (HRA) ConsultancyThis subcontract opportunity is for Habitat Regulations Assessment consultancy services to support the Borough Council of Kings Lynn and West Norfolk Local Plan for the period of 2026 to 2044. The selected prime contractor will be responsible for conducting comprehensive assessments of the implications for Ramsar sites, Special Protection Areas, and Special Areas of Conservation. This work requires the use of environmental mapping tools and ecological survey equipment to ensure all findings align with European site protection legislation. The primary deliverable for this engagement is a completed HRA report that informs the strategic planning of the Local Plan. Interested parties must submit their responses by November 25, 2026. The project falls under NAICS code 541620, emphasizing the need for specialized environmental consultancy expertise to meet the regulatory requirements of the council.

Borough Council of Kings Lynn and West Norfolk

POSTED

about 9 hours ago

DEADLINE

in 28 days

AI Contract Overview

This subcontract opportunity is for a Hydrologist / Water Quality Consultant to support prime contractors on environmental impact report projects for the Placer County Community Development Resource Agency in Auburn, California. The selected consultant will be responsible for performing water quality assessments and hydrological studies, which include conducting water sampling and runoff analysis in coordination with the California Regional Water Quality Control Board. Technical execution requires the use of hydrological modeling software and water testing kits to produce detailed technical reports. Qualified candidates must hold a Professional Engineer or Professional Geologist license to be eligible for this role. The solicitation was posted on September 1, 2026, with a response deadline of September 22, 2026. This project falls under NAICS code 541620, focusing on specialized environmental engineering and geological services.

General Info

Hydrologist/Water Quality Consultant for Placer County environmental reports; PE or PG license required.

Agency

California → Placer County Community Development Resource Agency

NAICS

541620 - Environmental Consulting Services

Place of Performance

Auburn, CA, 95603, USA

Set-Aside

NONE

Documents

This scope was carved out of 20684.

The full solicitation package (1 document), including the RFP, is on the prime solicitation, not on this scope.

View the prime solicitation

Preparation Of Environmental Impact Reports

AI Contract Breakdown

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Timeline

PhaseClosed

PostedSep 1

subcontract

Response DeadlineSep 22

Deadline has passed

Submission Closed

09/22/2026, 10:00:00 PM UTC

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Organization & Contact Information

AgencyCalifornia → Placer County Community Development Resource Agency

ContactsNo contacts available

OfficeN/A

Organization / AgencyCalifornia → Placer County Community Development Resource Agency

Office AddressN/A

ContactsNo contact information available

Full Description

Performs water quality assessments and hydrological studies for prime contractors on Placer County environmental impact report projects. Conducts water sampling and runoff analysis in coordination with the California Regional Water Quality Control Board. Utilizes water testing kits and hydrological modeling software. Requires a Professional Engineer (PE) or Professional Geologist (PG) license. Delivers hydrology and water quality technical reports.