This Subcontract opportunity from Colorado 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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Site Restoration and Reseeding

Closed

State & Local

Submission Closed08/12/2026, 05:00:00 PM UTC

Contract Overview

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

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NAICS: 541620

New

Federal

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DEADLINE

U.S. DEPARTMENT OF ENERGY/NATIONAL NUCLEAR SECURITY ADMINISTRATION (DOE/NNSA)OFFICE OF COUNTERTERRORISM AND COUNTER-PROLIFERATION (NA-80) TECHNICAL SUPPORT SERVICESThe National Nuclear Security Administration, under the Department of Energy, is forecasting a requirement for technical support services to benefit the Office of Counterterrorism and Counter-proliferation. This procurement is categorized under NAICS code 541620 and is intended as a small business set-aside. The work is expected to be performed in the District of Columbia. Project Enhancement Corporation is listed as the incumbent contractor for these services. Interested parties may coordinate with the Small Business Program Manager, Chelsea Murphy, regarding this upcoming opportunity.

National Nuclear Security Administration

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DEADLINE

On-Call Biological Support Services for 2026 Integrated Vegetation Management Work, Western Area Power Administration, Desert Southwest Region, PhoenixThe Western Area Power Administration, under the Department of Energy, is forecasting a requirement for on-call biological support services to assist with 2026 Integrated Vegetation Management work within the Desert Southwest Region in Phoenix. This project falls under NAICS code 541620 and is intended to provide specialized biological expertise to ensure vegetation management activities are conducted in compliance with environmental regulations and standards. Klamath Wildlife Resources is listed as the incumbent contractor for these services. Interested parties can coordinate with the Small Business Program Managers at the agency for further information regarding this upcoming opportunity.

Western Area Power Administration

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DEADLINE

Site Conditions and Geotechnical AnalysisThis subcontract for Site Conditions and Geotechnical Analysis involves performing technical investigations of existing site conditions for prime contractors working on Housing Corporation of East Windsor projects. The selected provider will utilize soil sampling equipment and geotechnical testing tools to evaluate physical and environmental constraints, identifying critical issues that may impact overall project feasibility. These efforts will culminate in the delivery of essential technical input for the Existing Conditions and Constraints Memorandum. Managed by DAS Procurement for the state of Connecticut, the contract requires the provider to hold a Professional Geologist or PE license and maintain Professional Liability insurance. Interested parties must respond by November 14, 2026, regarding this opportunity which falls under NAICS code 541620.

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Windstorm Risk Assessment & Mitigation ConsultingThis subcontract for Windstorm Risk Assessment and Mitigation Consulting supports prime contractors working on projects for the Housing Authority of the City of Brownsville in Texas. The selected consultant will provide technical windstorm risk analysis, utilizing catastrophe modeling and geospatial risk tools to perform risk modeling for weather-related perils. The scope of work includes evaluating the physical vulnerability of properties and delivering detailed risk assessment reports. The primary objective of these services is to provide data-driven recommendations to improve the insurability of the properties. This opportunity falls under NAICS code 541620 and requires the delivery of specific mitigation strategies to protect assets against windstorm damage. Interested parties must respond by December 17, 2026.

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DEADLINE

Groundwater Data Processing and Hydrogeological ModelingThis subcontract for Groundwater Data Processing and Hydrogeological Modeling supports UNICEF projects in Vanuatu by providing specialized geophysical data analysis. The selected contractor will be responsible for inverting raw TEM data to create inversion outputs, interpretive sections, and maps. By integrating these results with topography, geology, borehole records, and water quality data, the contractor will rank borehole investigation targets and deliver comprehensive technical groundwater assessment reports and site maps. To qualify for this engagement, the contractor must possess professional credentials as a hydrogeologist or geophysicist and have access to necessary GIS software. The work falls under NAICS code 541620 and focuses on delivering critical data processing and modeling services to assist prime contractors in identifying viable groundwater sources within the region.

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Certified Industrial Hygienist (CIH) Reporting ServicesThis subcontract for Certified Industrial Hygienist (CIH) Reporting Services involves providing professional analysis of laboratory data for prime contractors working on California Department of General Services facility projects. The selected provider will analyze results to establish risk thresholds and author 100 signed final survey reports delivered in a room-by-room format including professional recommendations. To qualify for this engagement, the provider must hold Certified Industrial Hygienist (CIH) certification and maintain AIHA Competent Professional status. The solicitation was posted on November 6, 2026, with a response deadline of November 23, 2026, falling under NAICS code 541620.

California Department of General Services

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Legionella Water Sample Collection ServicesThis subcontract for Legionella Water Sample Collection Services involves performing on-site water sample collection for prime contractors working on California Department of General Services facility projects. The scope of work includes conducting routine and investigative sampling of both domestic and non-potable water systems, specifically focusing on pre and post flush sampling and the measurement of residual disinfectant, temperature, and pH levels. The selected provider must manage the Chain of Custody and ensure all activities adhere to the AIHA Technical Framework: Legionella 2020 standards. Responsibilities include the delivery of collected samples accompanied by completed Chain of Custody forms. This opportunity falls under NAICS code 541620, with a response deadline of November 23, 2026.

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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

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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

POSTED

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.

Planning and Building

POSTED

DEADLINE

Environmental Compliance and DrainageThis subcontract for the California Department of Transportation focuses on environmental compliance and drainage installation for highway projects in San Diego. The selected provider will be responsible for developing critical documentation, including Lead Compliance and Water Pollution Control Plans, while ensuring all operations adhere to Senate Bill 1383 regulations concerning treated wood waste. Technical deliverables include the installation of Modified Type OS Inlets and Temporary Drainage Inlet Protection. The contractor must provide both the approved compliance plans and the physical installation of drainage hardware to support prime contractors in meeting state environmental standards.

California Department of Transportation

POSTED

1 day ago

DEADLINE

in 16 days

AI Contract Overview

The contract titled Site Restoration and Reseeding involves comprehensive land rehabilitation efforts focused on final cleanup, soil stabilization, reseeding with native vegetation, and mulching to restore areas disturbed by prior activities. These tasks are essential for ecological recovery and long-term environmental resilience in targeted regions under the jurisdiction of the DNR - Division of Parks & Wildlife in Colorado. The work will be executed under a subcontract arrangement, aligning with NAICS code 541620 which pertains to environmental consulting services, and must be completed by the response deadline of August 12, 2026. The contract is open for bidding as of August 4, 2026, with no specific set-aside designation or agency office address provided, indicating it is an open opportunity for qualified subcontractors to respond through the designated online portal.

General Info

Site restoration and reseeding with native vegetation via subcontract, due August 12, 2026, for Colorado DNR Parks & Wildlife.

Agency

Colorado → DNR - Division Of Parks & Wildlife

NAICS

541620 - Environmental Consulting Services

Place of Performance

Not specified

Set-Aside

NONE

Documents

This scope was carved out of DQ1 2027*032.

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

View the prime solicitation

HPSF, SF2501T11, Government Creek OHV Trail Reroute

AI Contract Breakdown

Uniform Contract Format

No documents to break down

The breakdown needs solicitation documents. None were found from this contract's source.

Timeline

PhaseClosed

PostedAug 4

subcontract

Response DeadlineAug 12

Deadline has passed

Submission Closed

08/12/2026, 05:00:00 PM UTC

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Organization & Contact Information

AgencyColorado → DNR - Division Of Parks & Wildlife

ContactsNo contacts available

OfficeN/A

Organization / AgencyColorado → DNR - Division Of Parks & Wildlife

Office AddressN/A

ContactsNo contact information available

Full Description

Final cleanup, soil stabilization, reseeding with native vegetation, and mulching to restore disturbed areas.

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