This Subcontract opportunity from California was posted on August 4, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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Environmental Remediation and Monitoring

Closed

State & Local

Submission Closed08/19/2026, 03:00:00 PM PDT

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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DEADLINE

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California Department of General Services

POSTED

DEADLINE

On-Call Solid Waste Data Analysis and Economic Services

Solicitation # 26-202-S

Seattle Public Utilities is seeking an on-call consultant to provide expert solid waste data analysis and economic services to support the city's Zero Waste goals. This contract, with an estimated value of $625,000 and a duration of up to five years, focuses on leveraging extensive datasets to evaluate the effectiveness, equity, and feasibility of solid waste incentives, programs, and policies. The scope of work includes program evaluation using causal inference, economic modeling, demand forecasting, longitudinal analysis of waste characteristics, and the extraction of data from Microsoft Access databases. A key component of the engagement is the translation of complex technical findings into actionable insights through data visualization, strategic storytelling, and high-quality reports for both technical and non-technical audiences. The selection process is based on a weighted evaluation of project team qualifications and research and analytical capabilities, with a strong emphasis on equity-centered analysis and the ability to manage multiple projects in an on-call environment. Awarded consultants must adhere to strict compliance standards, including mandatory WMBE inclusion plans for contracts over $343,000, adherence to the Americans with Disabilities Act and WCAG accessibility guidelines, and compliance with Seattle's Equal Benefits and minimum wage ordinances. The contract is governed by a template that incorporates FAR Part 31 for allowable overhead costs and requires specific insurance coverages, including Commercial General Liability and Worker's Compensation. Work is assigned via individual work assignments, each with its own defined schedule and deliverables.

Seattle Public Utilities

POSTED

DEADLINE

Environmental and Resource Agency Permitting ConsultantThe Environmental and Resource Agency Permitting Consultant subcontract involves securing necessary resource agency permits for prime contractors working on bridge projects for the County of San Mateo. The selected consultant will be responsible for coordinating with the California Department of Fish and Wildlife and the US Army Corps of Engineers to obtain permits for work conducted in wetland drainage areas, while ensuring all activities remain compliant with Planning Permit PLN2013-00451. This engagement requires specialized expertise in resource agency permitting processes and a deep understanding of wetland regulations to successfully deliver approved permits. Managed by the Planning and Building agency, the solicitation was posted on November 6, 2026, with a response deadline of November 17, 2026.

Planning and Building

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DEADLINE

Solicitation # 2027-RFP - Big Wave Bridge-00211

The County of San Mateo, through the Planning and Building department, is soliciting proposals for a qualified consultant to secure resource agency and encroachment permits for the construction of the Big Wave New Bridge. Located at 386 Airport Street in Half Moon Bay, the bridge will span a wetland drainage area between a Big Wave parcel to the north and a County-owned parcel to the south to ensure pedestrian path continuity toward the Princeton area. This project is conducted under the conditions of approval for Planning Permit PLN2013-00451. It is important to note that the actual construction of the bridge and the application for the building permit are explicitly excluded from the consultant's scope of work. The contract has a term of one year, with an anticipated award date of November 24, 2026. Proposals must be submitted via the eProcurement portal by November 16, 2026, and must be divided into a technical proposal and a separate fee proposal. Award selection is based on a points-based scoring method where firm qualifications, project approach, proposed schedule, and price are each weighted at 25 percent. The County provides a procurement preference for local businesses and non-profits. All communications regarding the RFP must be handled through the authorized contact persons, Camille Leung and Amy Tang, or the eProcurement portal.

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California Department of Transportation

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DEADLINE

Environmental and Archaeological Compliance MonitoringThis subcontract focuses on providing environmental and archaeological compliance monitoring for prime contractors working on Texas Parks and Wildlife Department projects. The primary scope of work involves coordinating with cultural resource personnel to establish machinery access routes that avoid archaeological features and overseeing the strict implementation of environmental Best Management Practices. The selected provider is responsible for delivering essential compliance reports and official resource protection sign-offs to ensure all regulatory requirements are met. This opportunity falls under NAICS code 541620 and is associated with the state of Texas, with a response deadline set for November 19, 2026.

Parks and Wildlife Department

POSTED

DEADLINE

Mine Rehabilitation Reporting and Technical SupportThis subcontract for Mine Rehabilitation Reporting and Technical Support involves providing specialized technical monitoring and progressive reporting for prime contractors working on Ontario Ministry of Energy and Mines projects. The scope of work requires high-level expertise in geotechnical, water resource, geochemical, and ecology fields to ensure all rehabilitation efforts comply with the Species at Risk Survey and other regulatory standards. The project is managed under the Government of Ontario's Energy and Mines agency and is categorized under NAICS code 541620. Interested parties must submit their responses by December 7, 2026, to support the delivery of essential progressive rehabilitation reports and technical oversight within Canada.

POSTED

DEADLINE

Environmental Due Diligence and Site AssessmentThis subcontract focuses on providing technical due diligence and environmental assessments for prime developers working on land projects managed by the City of Cleveland Department of Economic Development. The scope of work includes conducting Phase I and II Environmental Site Assessments, producing geotechnical reports, and performing land surveys to evaluate the buildability of designated sites. The primary objective is to deliver comprehensive due diligence reports and necessary environmental documentation to support development decisions. The project falls under NAICS code 541620 and is associated with the state of Ohio. Interested parties should note that the response deadline for this opportunity is January 4, 2027. All activities are centered on ensuring that land projects meet the required technical and environmental standards before construction begins.

POSTED

DEADLINE

Professional Agronomic & Turfgrass ConsultingThis subcontract for Professional Agronomic and Turfgrass Consulting supports prime contractors on City of Greensboro projects in North Carolina. The selected provider will deliver strategic turf health planning and professional agronomic expertise, which includes conducting site visits and monitoring soil conditions, turf health, and pest or disease pressure through the use of diagnostic tools and soil testing kits. Key deliverables include the creation of seasonal and annual agronomic plans for fertilizer and pesticide applications, as well as the submission of detailed inspection reports and application schedules. To qualify for this engagement, the consultant must hold a North Carolina Pesticide Consultant License in Category L, along with OSHA 10 or 30-Hour certification and First Aid/CPR/AED training. The opportunity was posted on November 6, 2026, with a response deadline of December 1, 2026. This project falls under NAICS code 541620 for environmental consulting services.

POSTED

DEADLINE

Wastewater Construction Inspection and AdministrationThis subcontract for Wastewater Construction Inspection and Administration involves providing on-site inspection and construction management services for prime contractors working on Norwich Public Utilities wastewater projects. The scope of work includes overseeing open-cut excavations and various trenchless installation methods, such as pipe bursting, horizontal directional drilling, and cured-in-place pipe. The selected provider is responsible for verifying that all installation standards are met and managing general construction administration. Key deliverables for this engagement include the submission of daily inspection reports, the verification of quantities for payment processing, and the final verification of as-built documentation. This opportunity is managed by DAS Procurement for the state of Connecticut under NAICS code 541620, with a response deadline set for December 15, 2026.

POSTED

DEADLINE

Geotechnical and Environmental Consulting ServicesThis subcontract for Geotechnical and Environmental Consulting Services involves providing specialized technical support for Norwich Public Utilities wastewater projects. The selected consultant will perform site investigations, geotechnical boring, and environmental evaluations, with a specific focus on geotechnical analysis and hazardous materials abatement planning for pump station facilities. Key deliverables include comprehensive geotechnical reports, site investigation summaries, and detailed abatement plans. To qualify for this engagement, providers must hold professional licensure in either Geotechnical or Environmental Engineering. The opportunity is managed through DAS Procurement for the state of Connecticut under NAICS code 541620. Interested parties must submit their responses by the deadline of December 15, 2026.

DAS Procurement

POSTED

about 19 hours ago

DEADLINE

in about 1 month

AI Contract Overview

The City of Roseville is seeking a subcontractor to conduct comprehensive environmental remediation and monitoring services, including soil and groundwater sampling, contamination assessment, and the implementation of a remediation plan. The work will focus on identifying and addressing environmental pollutants in soil and aquifers to ensure compliance with regulatory standards and protect public health. The subcontractor must possess the technical expertise to design and execute sampling protocols, analyze data for contamination levels, and develop and carry out site-specific remediation strategies tailored to the unique geology and hydrology of the area. The contract is classified under NAICS code 541620, indicating a focus on environmental consulting services, and is open for bidding with a deadline of August 19, 2026. The performance location is within the City of Roseville, California, though specific address details are not provided. This opportunity is not subject to any set-aside provisions, and the bid is open to qualified subcontractors with demonstrated experience in environmental site assessments and remediation. Proposals must be submitted prior to the deadline, and the selected vendor will be expected to deliver accurate findings and effective cleanup actions in alignment with state and federal environmental regulations.