This Subcontract opportunity from California was posted on August 5, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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Drainage System Design (Hydraulic & Hydrologic Analysis)

Closed

State & Local

Submission Closed08/21/2026, 04:00:00 PM PDT

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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Purchase of Mitigation Credits to Offset Wetland Impacts for SR 64

Solicitation # DOT-ITB-26-1362-JS

The Florida Department of Transportation issued solicitation DOT-ITB-26-1362-JS for a 24-month term contract to purchase federal and state wetland mitigation bank credits on an as-needed basis. These credits are required to offset wetland impacts for the SR 64 (Manatee Ave) Anna Maria bridge replacement project, specifically from SR 789 to Perico Bay BLVD within the SFWMD Regulatory Sarasota Bay Subbasin. The anticipated needs include approximately 5.10 acres of saltwater forested credits and 0.55 acres of saltwater herbaceous credits. LPI Wetland Mitigation Bank, Ltd has been identified as the intended awardee based on evaluation factors focusing on cost per credit and the availability of the required wetland types. To be accepted, credits must align with the Uniform Mitigation Assessment Method or other functional assessment methods and be approved by regulatory bodies including the SFWMD, FDEP, and USACE. Vendors are required to be registered in the MyFlorida MarketPlace system and must provide a valid Mitigation Banking Instrument and a ledger from the USACE to certify credit availability. The contract incorporates various compliance requirements, including the Drug-Free Workplace Program, E-Verify certification, and adherence to Buy America provisions. The Department also reserves the right to perform on-site inspections of mitigation sites prior to contract execution to verify the availability of the credits.

Florida Department of Transportation

POSTED

DEADLINE

Decarbonization & Energy Transition PlanningThe Decarbonization and Energy Transition Planning subcontract for the Municipality of Clarington involves the development of strategic carbon emission reduction plans for prime contractors working on corporate facility projects. The selected provider will be responsible for conducting energy auditing, creating GHG emissions inventories, and performing heat pump viability analyses utilizing specialized energy modeling software such as EnergyPlus or eQUEST. The final deliverable is a comprehensive Decarbonization Implementation Plan that includes detailed timelines and cost estimates. To qualify for this engagement, personnel must hold professional certifications, specifically as a Certified Energy Manager, a Professional Engineer, or a LEED Accredited Professional. Interested parties must submit their responses by November 26, 2026, for this Canada-based project categorized under NAICS code 541620.

Municipality of Clarington

POSTED

DEADLINE

Professional Pest Management ConsultingThis subcontract for Professional Pest Management Consulting, managed by the Illinois Department of Procurement Services, focuses on establishing intervention thresholds and severity criteria for prime contractors working on rat abatement projects in the City of Chicago. The selected consultant will utilize urban pest management frameworks to develop the logic and indicators necessary to determine when intensive intervention or follow-up actions are required. The primary deliverable for this engagement is a comprehensive severity assessment framework. To qualify for this role, providers must hold professional entomology certifications or be a Certified Pest Control Operator. The solicitation was posted on November 5, 2026, with a response deadline of November 27, 2026. The project falls under NAICS code 541620, reflecting its nature as a professional management consulting service.

Department of Procurement Services

POSTED

DEADLINE

Building Safety and Statutory Compliance Services

St Albans City and District Council

POSTED

DEADLINE

Residential Property Licensing InspectorsThis subcontract opportunity is for Residential Property Licensing Inspectors to perform physical property inspections for prime contractors working on Luton Council housing projects. The selected provider will conduct site visits to assess property conditions, identify hazards or non-compliance issues, and document all findings through digital reporting tools and standardized inspection checklists. The primary objective is to deliver comprehensive inspection reports and evidence of property conditions to ensure safety and regulatory adherence. Qualified candidates must hold certifications in environmental health or residential property inspection and demonstrate strict adherence to the Housing Act 2004. This procurement is categorized under NAICS code 541620, with a response deadline set for December 4, 2026.

POSTED

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Water Quality Outfall Specialist ConsultancyThe Water Quality Outfall Specialist Consultancy is a subcontracting opportunity with Devon County Council focused on providing specialized environmental consultancy for prime contractors. The scope of work involves the design and implementation of water quality outfall improvements throughout South West England. To ensure compliance with UK water quality regulations, the selected provider will utilize environmental impact modeling alongside professional water quality sampling and analysis equipment. The project is structured into two primary water quality strands, which require the delivery of detailed reports and comprehensive implementation plans. Interested parties should note that the response deadline for this engagement is November 30, 2026.

POSTED

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Flood Risk Assessment and Detailed Design (Hele Railway Crossing)This subcontract involves providing flood risk assessments and resilience design services for prime contractors working on Devon County Council infrastructure projects. The scope of work specifically includes the preparation of detailed designs and assessments for the Hele Railway Crossing, Smithincott Extension, Spratcot Site, and Sheldon Catchment. To ensure compliance with Environmental Agency standards, the contractor will utilize specialized topographic surveying equipment and flood modeling software to deliver comprehensive reports and design documentation. The project is categorized under NAICS code 541620 and is managed by the Devon County Council. Interested parties should note that the response deadline for this opportunity is November 30, 2026.

POSTED

DEADLINE

Environmental Due Diligence TestingThis subcontract for the City of Houston involves providing environmental due diligence testing for buyers of city real estate assets. The primary objective is to identify potential contamination or hazardous materials through a comprehensive process that includes records reviews, site visits, and the sampling of soil and groundwater in accordance with ASTM standards. The final deliverable for these services is a Phase I Environmental Site Assessment Report. Qualified providers must hold Environmental Professional certification to perform the work under NAICS code 541620. The solicitation was posted on November 5, 2026, with a response deadline set for December 3, 2026.

POSTED

DEADLINE

Tree Inspection and Condition Survey ServicesThe University of Exeter is seeking a subcontractor to provide tree inspection and condition survey services across its property portfolio. The selected provider will be responsible for conducting systematic evaluations of existing tree stock to assess health and stability, primarily for the purpose of risk mitigation. These services must be performed using professional arboricultural assessment tools and GIS mapping software to ensure precise data collection and reporting. To qualify for this contract, the provider must hold an ISA Certified Arborist or LANTRA equivalent certification. The primary deliverables include comprehensive tree condition survey reports and the establishment of a planned inspection programme. Interested parties must submit their responses by November 19, 2026.

POSTED

DEADLINE

Solicitation # PO/2026/1272/VW

The University of Exeter is seeking quotations for tree survey services across its Exeter property portfolio under solicitation number PO/2026/1272/VW. The objective of this contract is to implement a planned programme of tree inspections and condition surveys to ensure the effective management of tree stock and adherence to health, safety, and environmental responsibilities. The estimated contract duration is approximately three years, running from December 3, 2026, to December 3, 2029, with an estimated total value of 45,000 GBP excluding VAT. The contract will be awarded based on a weighted evaluation consisting of 50 percent for scored technical requirements and 50 percent for the pricing element. Small and medium-sized enterprises are identified as particularly suitable for this opportunity. Interested bidders must submit their electronic proposals via the designated portal by the deadline of November 19, 2026, at 1:00pm. All inquiries and administration are managed by the University of Exeter Procurement Operations office located at Northcote House, Exeter.

POSTED

DEADLINE

Sanitary Sewer I&I Study SpecialistThis subcontract opportunity, managed by DAS Procurement for the State of Connecticut, seeks a Sanitary Sewer I&I Study Specialist to support prime contractors on municipal projects within the Town of Glastonbury. The selected specialist will be responsible for conducting a comprehensive technical study to identify and quantify inflow and infiltration. This scope of work involves performing detailed field investigations and analysis utilizing specialized tools such as flow meters, smoke testing equipment, CCTV inspection cameras, and dye testing to pinpoint structural failures and groundwater infiltration. To qualify for this role, the provider must employ a Professional Engineer or a certified wastewater specialist. The primary deliverable for this engagement is a detailed I&I Study Report. Interested parties should note that the response deadline is December 3, 2026, and the project falls under NAICS code 541620.

POSTED

DEADLINE

Environmental Site Assessment and RemediationThis subcontract for Environmental Site Assessment and Remediation supports prime contractors on projects for the County of Orange, OC Public Works, specifically within Santa Ana. The scope of work involves performing Phase I and II assessments and remediation services, which include sampling soil, soil-vapor, groundwater, and wastewater. Additionally, the contractor is responsible for conducting geophysical surveys, performing UST assessments, developing remedial action plans, and delivering final ESA reports and regulatory closure documentation. To qualify for this engagement, the contractor must hold a Professional Geologist or Professional Engineer license. The opportunity is categorized under NAICS code 541620, with a response deadline set for December 23, 2026.

County of Orange, OC Public Works

POSTED

about 13 hours ago

DEADLINE

in about 2 months

AI Contract Overview

The City of Atascadero in California is seeking a subcontractor for a drainage system design project focused on hydraulic and hydrologic analysis. The scope of work involves the design of minor drainage improvements, specifically including the development of culverts, inlets, and storm conveyance systems, all of which must be supported by detailed modeling. This opportunity is categorized under NAICS code 541620 and will be performed in Atascadero, zip code 93422. The solicitation was posted on August 5, 2026, and interested parties must submit their responses by the deadline of August 21, 2026.