This Government Contract opportunity from California was posted on July 15, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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Hydraulic Modeling and System Analysis

Closed

State & Local

Submission Closed09/04/2026, 12:00:00 AM UTC

Contract Overview

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

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NAICS: 541620

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Environmental ServicesThis subcontract opportunity is for the provision of environmental services to support prime contractors working on projects for the City of Brookhaven Department of Public Works in Georgia. The scope of work involves performing comprehensive environmental site assessments, conducting regulatory compliance audits, and executing environmental impact analyses. The selected provider will be responsible for delivering detailed environmental reports and necessary compliance certifications to ensure all project activities meet applicable standards. The solicitation was posted on October 23, 2026, with a response deadline set for November 25, 2026. Classified under NAICS code 541620, this engagement focuses on specialized environmental consulting and compliance services. Interested parties can find further details through the Georgia Department of Administrative Services portal.

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Environmental Consulting & PermittingThis subcontract opportunity for Environmental Consulting and Permitting involves providing specialized environmental assessments and regulatory permitting services for prime contractors working on roadway projects in Albany, Georgia. The selected provider will be responsible for conducting wetland delineations and environmental impact studies while ensuring all work adheres to FHWA and GDOT requirements. This process includes utilizing environmental sampling and testing equipment and coordinating directly with state and federal agencies to secure approved project permits and deliver comprehensive assessment reports. The project requires the involvement of certified environmental professionals under NAICS code 541620. Interested parties should note that the solicitation was posted on October 22, 2026, with a response deadline set for November 23, 2026.

POSTED

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Turbidity Monitoring and Environmental ComplianceThis subcontract for Turbidity Monitoring and Environmental Compliance involves providing water quality monitoring services for prime contractors working on Collier County Coastal Zone Management projects. The primary objective is to monitor turbidity levels during sand placement activities to ensure strict adherence to State DEP Permit 0235209-008-JM and USACE Permit SAJ-2005-02726. The selected contractor will utilize turbidity meters and specialized water sampling equipment to gather data, which will be delivered through detailed turbidity monitoring reports and compliance logs. This opportunity falls under NAICS code 541620, with a response deadline set for November 16, 2026.

Coastal Zone Management

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Hazardous Waste Management & Compliance OversightThis subcontract for Hazardous Waste Management and Compliance Oversight involves providing administrative and technical oversight for the transport and disposal of hazardous materials on University of Connecticut facility projects. The scope of work focuses on managing wastes resulting from lead, radon, PCB, and asbestos abatements, which includes performing sampling for waste profiles and reviewing bills of lading and transporter manifests. The selected provider must ensure all hazardous waste determinations are accurate and deliver verified manifests and profiles. Personnel assigned to this contract are required to hold HAZWOPER certification to ensure safety and regulatory compliance. Managed through DAS Procurement for the state of Connecticut, the opportunity falls under NAICS code 541620. Interested parties must submit their responses by the deadline of November 19, 2026.

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Industrial Hygiene & Air Quality MonitoringThis subcontract, managed by DAS Procurement for the state of Connecticut, involves providing industrial hygiene services and indoor air quality surveys for prime contractors working on University of Connecticut facility projects. The scope of work includes performing personal area monitoring during remediation and conducting on-site analysis of asbestos PCM samples. The selected provider will utilize specialized equipment such as PCM microscopes, air sampling pumps, and indoor air quality monitoring tools to deliver comprehensive air monitoring reports and sample analysis logs. Qualified candidates should ideally possess HAZWOPER and Industrial Hygiene or Mold consultancy certifications. The opportunity is categorized under NAICS code 541620 and was posted on October 22, 2026, with a response deadline of November 19, 2026. Interested parties can find further details through the CTSource Bid Board.

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Hazardous Material Assessment & InspectionThis subcontract, managed by DAS Procurement for the state of Connecticut, involves performing comprehensive inspections and assessments of hazardous building materials for prime contractors working on University of Connecticut facility projects. The scope of work includes conducting interior and exterior building inspections as well as evaluating above-ground and underground infrastructure and utilities for the presence of asbestos, PCBs, lead, and radon. The selected contractor will be responsible for utilizing appropriate sampling tools and personal protective equipment for site entry and delivering detailed assessment reports and inspection logs. Qualified candidates must hold a Connecticut Asbestos Consultant License, while a Connecticut Lead Consultant License is preferred. The solicitation was posted on October 22, 2026, with a response deadline of November 19, 2026. This opportunity falls under NAICS code 541620 and is accessible through the CTSource Bid Board.

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On-Call - Hazardous Material Industrial Hygiene Assessment

Solicitation # 004-OC.HAZMAT30

The University of Connecticut is soliciting statements of qualifications for an on-call professional services program focused on hazardous material industrial hygiene assessment. The scope of work includes hazardous material assessments, remediation project monitoring, indoor air quality assessments, and industrial hygiene consulting for the Storrs-Mansfield main campus, regional campuses, UConn Health, and other university properties. Key tasks involve inspecting hazardous building materials for new construction and renovations, managing wastes such as asbestos, PCBs, lead, and radon, and preparing technical specifications for abatement work. The master agreement is planned to run from May 1, 2027, through October 31, 2030, with individual assignments capped at 1 million dollars each. This is a quality-based selection process where the university evaluates proposers on their technical ability, managerial capacity, and integrity. A current Connecticut Asbestos Consultant License is required, while a Connecticut Lead Consultant License and certifications in HAZWOPER, industrial hygiene, or mold consultancy are preferred. Proposers must submit their proposals through the HuskyBuy Portal, including a narrative of their project approach, a record of previous relevant experience from the last ten years, and resumes for key personnel such as principals and project designers. Selection for specific assignments will be based on the complexity of the task, past performance, staff availability, and the submitted fee proposal, which may be structured as a lump sum or based on contracted hourly rates.

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Erosion and Sedimentation Control (ESC)This subcontract opportunity involves providing specialized environmental planning services for prime contractors working on Georgia Department of Transportation projects. The selected provider will be responsible for developing comprehensive Erosion, Sedimentation, and Pollution Control Plans (ESCPP) and managing rainfall and runoff reporting specifically for staged construction. Success in this role requires a deep technical understanding of both state and federal environmental runoff regulations to ensure all project deliverables meet legal and safety standards. The contract is categorized under NAICS code 541620 and is associated with the Georgia Department of Transportation. Interested parties should note that the response deadline is November 23, 2026. The primary deliverables for this engagement include the finalized ESCPP plans and the recurring rainfall and runoff reports necessary for project compliance.

Department of Transportation-2

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UST Line and Hydrostatic TestingThis subcontract involves providing specialized pressure and leak testing for underground fuel system components at Leesylvania State Park in Woodbridge, Virginia. Working for prime contractors on behalf of the Virginia Department of Conservation and Recreation, the selected provider will perform line tests on 1.5-inch product lines and hydrostatic tests on existing sumps utilizing pressure gauges and pumps. The contractor must hold a UST Testing Certification and ensure strict environmental compliance regarding water disposal. Key deliverables include the submission of certified test results and detailed integrity reports. This opportunity falls under NAICS code 541620, with a response deadline of October 30, 2026.

Department of Conservation and Recreation

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DEADLINE

Non-Tidal Wetland Mitigation Credit SupplyThis subcontract focuses on the supply of 1.12 acres of non-tidal wetland mitigation credits to support prime contractors working on projects for the City of Newport News Engineering Department. The scope of work involves the identification and allocation of approved credits specifically within Hydrologic Unit Code 2080206, culminating in the legal transfer of these credits. To ensure compliance, all credits must originate from a permitted mitigation site or an approved Mitigation Bank recognized by the US Army Corps of Engineers. The primary deliverable for this agreement is the executed Affidavit of Mitigation Credit Sale. Classified under NAICS code 541620, the procurement process is managed by the Engineering agency in Virginia, with a response deadline set for November 10, 2026.

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Wetland Mitigation Credits (Stoney Run Park)

Solicitation # 27-2265-3103

The City of Newport News Engineering Department is soliciting bids under solicitation number 27-2265-3103 for the provision of 1.12 acres of non-tidal wetland mitigation credits. These credits must be located within Hydrologic Unit Code (HUC) 2080206 in Newport News, specifically at latitude 37.14486 and longitude -76.5453458. Bids must be submitted sealed via the OpenGov Procurement portal by November 10, 2026, at 2:00 pm. The contract will be awarded to the lowest responsive and responsible bidder based on the total bid price, with the contract remaining in effect until the project is completed. The selected contractor must adhere to strict insurance requirements, including a company rating of A or above by A.M. Best, with minimum coverage limits of 1 million dollars for automobile liability, property damage, and workers compensation, and a 2 million dollar umbrella liability policy. Key administrative terms include net 30-day payment terms and a requirement for the contractor to indemnify the City. Bidders must provide a W-9, certify they are not debarred or suspended, and disclose their SWaM status. Deliverables include the execution of an Affidavit of Mitigation Credit Sale, and all items are to be delivered F.O.B. Destination within seven calendar days of the bid release unless otherwise specified.

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Purchase of State and Federal Freshwater Herbaceous and Forested Wetland Mitigation Functional Credi

Solicitation # DOT-ITB-27-8017-MB

The Florida Department of Transportation, Florida’s Turnpike Enterprise, is soliciting bids under solicitation number DOT-ITB-27-8017-MB to establish one or more indefinite quantity contracts for the purchase of state and federal freshwater herbaceous and forested wetland mitigation functional credits. These credits will be used to offset approximately 15 acres of wetland impacts in Lake County, Florida, specifically within the St. John’s River Water Management District Palatlakaha River Nested Cumulative Impact Basin and the USGS Ocklawaha River Hydrologic Unit Code 8 #03080102. The anticipated contract term is three years from the issuance of the first Task Work Order. Bids are due by November 10, 2026, with a public opening scheduled for November 17, 2026. The contract will be awarded to the bidder or combination of bidders offering the lowest price to meet project needs. Qualified bidders must be registered in MyFloridaMarketPlace, possess a valid state or federal wetland mitigation bank permit, and provide a current functional credit ledger. Key deliverables include the provision of credits via Task Work Orders and the delivery of reservation letters within three calendar days of a request. Vendors must comply with various state and federal regulations, including Title VI Nondiscrimination provisions and E-Verify certification. Payments are contingent upon annual appropriations and require submission of detailed invoices via email and the electronic submission of a W-9 form.

Florida Department of Transportation

POSTED

about 18 hours ago

DEADLINE

in 18 days

AI Contract Overview

West County Wastewater in California is seeking a subcontractor for a project titled Hydraulic Modeling and System Analysis. The scope of work involves performing comprehensive hydraulic and hydrologic modeling of wastewater systems, which includes model calibration, scenario testing, and the integration of these findings into capital improvement planning. The work is designated to be performed in Richmond, California, under NAICS code 541620. The solicitation was posted on July 15, 2026, and requires responses to be submitted by the deadline of September 4, 2026. Interested parties can find further details and submission guidelines through the provided BidAmerica portal.

General Info

West County Wastewater seeks a subcontractor for hydraulic modeling and analysis in Richmond, California.

Agency

California → West County Wastewater

NAICS

541620 - Environmental Consulting Services

Place of Performance

Richmond, CA, 94806, USA

Set-Aside

NONE

Documents

This scope was carved out of 26-RFP-024.

The full solicitation package (2 documents), including the RFP, is on the prime solicitation, not on this scope.

View the prime solicitation

On-Call District Engineer-Equivalent Services for Infrastructure and Planning

AI Contract Breakdown

Uniform Contract Format

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Timeline

PhaseClosed

PostedJul 15

subcontract

Response DeadlineSep 4

Deadline has passed

Submission Closed

09/04/2026, 12:00:00 AM UTC

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Organization & Contact Information

AgencyCalifornia → West County Wastewater

ContactsNo contacts available

OfficeN/A

Organization / AgencyCalifornia → West County Wastewater

Office AddressN/A

ContactsNo contact information available

Full Description

Conduct hydraulic and hydrologic modeling of wastewater systems, including model calibration, scenario testing, and integration with capital improvement planning.

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