This Subcontract opportunity from California was posted on July 27, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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Erosion and Sediment Control (Water Pollution BMPs)

Closed

State & Local

Submission Closed08/27/2026, 10:00:00 AM PDT

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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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Forestry Professional Oversight & CertificationThis subcontract opportunity with the BC Timber Sales Branch of the Province of British Columbia involves providing professional oversight and certification for prime contractors to ensure harvesting activities adhere to regulatory standards. The selected professional will be responsible for verifying field activities against the Forest Stewardship Plan utilizing mapping software, surveying tools, and GPS technology. A primary deliverable for this engagement is the provision of a signed Forest Professional Oversight and Certification Conformance Certificate. Qualified candidates must be registered under the Professional Governance Act to perform these services. The solicitation was posted on November 14, 2026, with a response deadline of December 11, 2026. The work is categorized under NAICS code 541620 and will be performed within Canada.

BC Timber Sales Branch

POSTED

DEADLINE

Environmental Consulting & Technical StudiesThis subcontract for Environmental Consulting and Technical Studies supports prime contractors on City of West Sacramento projects managed by the Capital Projects Construction agency. The selected provider will be responsible for performing comprehensive environmental reviews and technical site assessments, including site investigations to identify potential constraints. A primary focus of the work involves applying local environmental regulations specifically for public safety facilities to ensure all permitting requirements are met. Key deliverables for this engagement include the production of Existing Conditions Reports, formal environmental documentation, and detailed technical study reports. Interested parties should note that the response deadline for this opportunity is January 8, 2027, and the work falls under NAICS code 541620.

Capital Projects - Construction

POSTED

DEADLINE

Environmental Monitoring and GIS ReportingThis subcontract for Environmental Monitoring and GIS Reporting supports prime contractors on projects for the Regional District of East Kootenay in Canada. The selected provider will be responsible for technical monitoring and data analysis, specifically utilizing mosquito traps and sampling equipment to collect field results. Key deliverables include the generation of GIS data maps and the production of comprehensive end-of-season reports for local government review. Qualified candidates must demonstrate proficiency in Geographic Information Systems and adhere to established environmental sampling standards. The solicitation was posted on November 13, 2026, with a response deadline of December 3, 2026. This opportunity falls under NAICS code 541620 and is managed through the Province of British Columbia.

Regional District of East Kootenay

POSTED

DEADLINE

Needs Assessment & Evaluation FrameworkThis subcontract opportunity with the Gwinnett County Government in Georgia focuses on providing specialized needs assessment and evaluation framework services for transportation planning projects. The selected contractor will support prime contractors by developing project prioritization frameworks and conducting both Current and Planning Horizon Needs Assessments. Key responsibilities include creating trade-off analysis evaluation frameworks and producing all necessary supporting maps, tables, and text to document findings. The primary deliverables for this engagement are the comprehensive evaluation framework documentation and the Final Current and Planning Horizon Needs Assessment Report. This project falls under NAICS code 541620. Interested parties should note the response deadline of December 16, 2026, for this specific government-related transportation initiative.

Gwinnett County Government

POSTED

DEADLINE

Stream Mitigation Credit ProviderThis subcontract agreement establishes a partnership for the provision of 450 stream mitigation credits to support prime contractors working on Loudoun County projects, with a specific focus on the Lightridge Park development. The provider is responsible for delivering these credits from a mitigation bank and must submit a current credit ledger along with a Primary Service Area map. The formalization of this arrangement requires the execution of an Agreement for Credit Purchase and Sale. To ensure regulatory compliance, the transfer of credits is subject to approval from the Virginia Department of Environmental Quality and the U.S. Army Corps of Engineers. The contract falls under NAICS code 541620 and is managed by Loudoun County, Virginia, with a response deadline set for December 15, 2026.

POSTED

DEADLINE

Purchase of Stream Mitigation Credits for Lightridge Park, RFQ 719029

Solicitation # RFQ 719029

Loudoun County, Virginia, is soliciting bids under RFQ 719029 for the purchase of an estimated 450 stream mitigation credits to provide compensatory mitigation for stream impacts associated with the construction of Lightridge Park. To be eligible, bidders must be owners or authorized representatives of mitigation banks approved by the U.S. Army Corps of Engineers (USACE) and the Virginia Department of Environmental Quality (DEQ). Credits must be calculated using the Unified Stream Methodology (USM) or Stream Condition Units (SCUs) and must be released and available for sale at the time of bid opening. Furthermore, the bank's approved service area must include the Upper Bull Run watershed, specifically Hydrologic Unit Code (HUC) 020700100701. The final quantity of credits will be determined by the requirements of USACE State Program General Permit No. NAO-2026-01685 and DEQ Virginia Water Protection Permit No. WP4-26-1792. The contract will be awarded to the lowest responsive and responsible bidders based on unit cost, with the County reserving the right to award multiple contracts if a single bidder cannot provide the full quantity of credits. Bids must be submitted by December 15, 2026, and must include a W-9 form and Proof of Authority to Transact Business in Virginia. Required submissions include one physical hard copy and one electronic PDF copy on a USB flash drive. Upon award, the contractor must provide a written letter of credit availability and an executed purchase agreement within seven calendar days of the purchase order, followed by a Bill of Sale and verification of conveyance to USACE and DEQ within ten calendar days of payment.

POSTED

DEADLINE

Environmental Protection and Silt ControlThis subcontract for Environmental Protection and Silt Control involves providing environmental mitigation services for prime contractors working on County of Renfrew bridge projects at the Madawaska River in Canada. The scope of work includes the installation of turbidity curtains and silt fences, as well as the continuous monitoring of water quality through the use of specialized water sampling equipment. The selected provider is responsible for delivering a comprehensive environmental protection system and submitting detailed compliance reports. To be eligible, the contractor must hold the necessary environmental compliance certifications. The response deadline for this opportunity is December 3, 2026.

POSTED

DEADLINE

SWPPP Implementation & MonitoringThis subcontract for SWPPP Implementation and Monitoring involves providing comprehensive Storm Water Pollution Prevention Plan setup and monitoring services for prime contractors on public works projects within the City and County of Sacramento. The scope of work includes the physical installation of critical erosion and sediment control measures, such as silt fences, wattles, and storm drain protectors, alongside the delivery of necessary compliance reporting to ensure a fully compliant site. Qualified providers must hold an environmental compliance certification to perform these services under NAICS code 541620. The solicitation was posted on November 13, 2026, with a response deadline of December 10, 2026. The primary objective of the contract is to maintain active SWPPP measures that meet all regulatory standards for the Public Works agency in California.

POSTED

DEADLINE

GNSS Vulnerability and OT Systems ResearchThis subcontract with the Government of Canada focuses on conducting technical research regarding the Canadian energy sector's reliance on Global Navigation Satellite Systems (GNSS) and the associated vulnerabilities of critical operational technology systems. Working for prime contractors on PSPC Defence Sciences Division projects, the selected provider will analyze Transmission System Operators and ancillary services to develop a comprehensive classification system for GNSS-dependent critical infrastructure. The project requires specialized expertise in GNSS, operational technology, and energy infrastructure architectures. The primary objective is to identify systemic weaknesses and deliver a detailed synthesis of findings for a final report. Interested parties must respond by December 14, 2026, for this Canada-based performance engagement categorized under NAICS code 541620.

Government of Canada / Gouvernement du Canada

POSTED

DEADLINE

CDBG Environmental Review ServicesThis subcontract for CDBG Environmental Review Services involves performing site-specific environmental reviews for prime contractors on City of Lauderdale Lakes CDBG projects. The primary objective is to ensure full compliance with federal regulations, specifically the 24 CFR Part 58 Environmental Review Process. The selected provider will be responsible for conducting Tier II reviews, preparing all necessary approved forms and consultations, and utilizing GIS mapping tools to deliver completed and approved Environmental Review property files. Managed by the Community Development agency in Florida, this opportunity falls under NAICS code 541620. The solicitation was posted on November 13, 2026, with a response deadline of December 11, 2026, at 3:00 PM. Interested parties can find further details through the provided OpenGov procurement portal.

Community Development

POSTED

DEADLINE

Energy Audit Verification and Scope DevelopmentThis subcontract for Energy Audit Verification and Scope Development involves performing site assessments for 40 multifamily housing units in New Mexico to verify energy audit findings for prime contractors. The selected provider will coordinate with the Energy Navigator to conduct site visits, verify existing conditions, and develop detailed, property-specific scopes of work along with itemized cost estimates. Qualified candidates must possess energy auditing certification and demonstrate specific experience with EECBG funding and CEED cost caps. The primary deliverables for this engagement are the final property-specific scopes of work and the corresponding itemized cost estimates. Responses to this solicitation are due by November 24, 2026.

POSTED

DEADLINE

Construction Project Management & Site SupervisionThis subcontract agreement with Peabody Trust focuses on the delivery of construction project management and site supervision services for UK public sector projects. The provider will support prime contractors by serving as the Employer's Agent or Clerk of Works, ensuring rigorous technical assurance, governance, and contract administration throughout the project lifecycle. Key responsibilities include performing detailed site supervision and providing essential documentation such as construction management logs, project schedules, and site inspection reports. The engagement is categorized under NAICS code 541620, emphasizing the professional environmental consulting and management nature of the required services.

Peabody Trust

POSTED

1 day ago

DEADLINE

N/A

AI Contract Overview

The City of Redondo Beach in California is seeking a subcontractor for the implementation and maintenance of Erosion and Sediment Control Water Pollution Best Management Practices. This project focuses on deploying necessary measures to prevent pollution and manage stormwater runoff during construction activities within the 90277 zip code area. Interested parties must submit their responses by August 27, 2026, at 5:00 PM. The opportunity is categorized under NAICS code 541620, and further details regarding the solicitation can be accessed through the BidAmerica portal.

General Info

Redondo Beach seeks erosion and sediment control subcontractors by August 27, 2026.

Agency

California → City of Redondo Beach

NAICS

541620 - Environmental Consulting Services

Place of Performance

Redondo Beach, CA, 90277, USA

Set-Aside

NONE

Documents

This scope was carved out of 40399.

The full solicitation package (4 documents), including the RFP, is on the prime solicitation, not on this scope.

View the prime solicitation

Citywide Curb Ramp Improvements 2024 Project

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Timeline

PhaseClosed

PostedJul 27

subcontract

Response DeadlineAug 27

Deadline has passed

Submission Closed

08/27/2026, 10:00:00 AM PDT

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Organization & Contact Information

AgencyCalifornia → City of Redondo Beach

ContactsNo contacts available

OfficeN/A

Organization / AgencyCalifornia → City of Redondo Beach

Office AddressN/A

ContactsNo contact information available

Full Description

Implementation and maintenance of stormwater Best Management Practices to prevent pollution during construction.

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Erosion and Sediment Control (Water Pollution BMPs)

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