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

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Hydrologic and Hydraulic (H&H) Analysis

Closed

State & Local

Submission Closed06/25/2026, 01:00:00 PM CDT

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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Coastal Resilience & Environmental Planning

Glynn County Board of Commissioners

POSTED

DEADLINE

RFP27-013 Hazard Mitigation Plan Update Services

Solicitation # PE-66300-NONST-2027-000000132

Glynn County, Georgia, is soliciting proposals from qualified professional firms to update and develop its multi-jurisdictional Hazard Mitigation Plan. The primary objective of this project is to identify hazards, assess vulnerabilities, and establish practical mitigation strategies to protect residents, critical infrastructure, businesses, and government operations. To ensure the county remains eligible for future hazard mitigation funding, the final plan must strictly adhere to all applicable requirements set by FEMA and the Georgia Emergency Management and Homeland Security Agency. The county requires a consultant with specialized expertise in coastal resilience, GIS-based risk analysis, and the FEMA plan approval process. The scope of work focuses on the unique challenges of the coastal environment, including storm surge, hurricanes, flooding, evacuation route resilience, and maritime-related hazards. The selected firm will collaborate with county staff, local municipalities, and community stakeholders to create an operationally focused strategy. Interested parties must submit their proposals electronically through the Glynn County e-Procurement Portal powered by OpenGov by the response deadline of December 9, 2026.

Glynn County Board of Commissioners

POSTED

DEADLINE

SD Multi-Hazard Mitigation Enhanced Plan Update

Solicitation # 26RFP20017

The South Dakota Department of Public Safety’s Office of Emergency Management is seeking a qualified consultant under solicitation 26RFP20017 to update the Enhanced State Multi-Hazard Mitigation Plan. The project requires the consultant to integrate revisions from a previously approved FEMA plan crosswalk and ensure the final deliverable meets all requirements for an Enhanced State Multi-Hazard Mitigation Plan, including those of the High Hazard Dam Program. The contract is a firm-fixed-price arrangement, though the final award is strictly conditioned upon the receipt of federal funds. Key milestones include the delivery of the completed plan in Microsoft Word format by December 15, 2028, and the achievement of final FEMA approval by April 16, 2029. The selected consultant must provide monthly progress reports by the 15th of each month and maintain comprehensive insurance coverage, including at least 1,000,000 dollars in commercial general liability, professional liability, and business automobile liability. Proposals are evaluated based on the consultant's experience in completing similar plans and their proposed method of performance. A Letter of Intent was due by November 1, 2026, with final proposals due by November 16, 2026.

South Dakota State Government

POSTED

DEADLINE

Waste Characterization and MonitoringThis subcontract opportunity involves providing waste characterization and monitoring services for prime contractors operating on Los Angeles County Public Works projects. The selected provider will be responsible for analyzing and monitoring materials gathered during stormwater cleanouts, which includes measuring trash and conducting detailed waste characterization to determine proper disposal requirements. These tasks will be executed using specialized sampling tools and laboratory analysis. The scope of work culminates in the delivery of comprehensive waste characterization reports. This project falls under NAICS code 541620 and is associated with the state of California. Interested parties should note the response deadline of December 8, 2026.

Los Angeles County Public Works

POSTED

DEADLINE

Visitor Behavior and Biodiversity Impact Analysis

Newry Mourne & Down District Council

POSTED

DEADLINE

Agricultural Water Rights Valuation SpecialistThis subcontract opportunity is for an Agricultural Water Rights Valuation Specialist to support prime contractors on projects for the Edwards Aquifer Authority in Texas. The selected specialist will perform detailed market analyses comparing irrigation water rights to agricultural use, specifically evaluating economic value against agricultural productivity and assessing opportunity costs for rights holders. The scope of work involves comparing market rates against agricultural utility using regional crop-water requirement data and agricultural economic modeling tools to produce a final market analysis report. The solicitation was posted on November 9, 2026, with a response deadline of December 2, 2026. Classified under NAICS code 541620, this engagement focuses on providing specialized economic and agricultural expertise to determine the valuation of water rights within the region.

EDWARDS AQUIFER AUTHORITY

POSTED

DEADLINE

Water Rights Market Analysis ConsultantThe Water Rights Market Analysis Consultant subcontract involves providing specialized market analysis regarding irrigation and municipal or industrial water use for prime contractors working on Edwards Aquifer Authority projects in Texas. The selected consultant will be responsible for conducting extensive market research on pricing and usage rates, analyzing regional market trends impacting groundwater rights in the San Antonio area, and utilizing economic modeling software and water rights databases to produce a comprehensive final report. This opportunity is categorized under NAICS code 541620 and was posted on November 9, 2026, with a response deadline of December 2, 2026. Interested parties can find further details through the Texas SmartBuy portal.

EDWARDS AQUIFER AUTHORITY

POSTED

DEADLINE

Environmental Compliance & NEPA ConsultantsThis subcontract opportunity is for Environmental Compliance and NEPA Consultants to support prime contractors on projects for the Department of Defense, specifically within the USACE Rock Island District. The selected provider will be responsible for performing detailed regulatory analysis and drafting essential National Environmental Policy Act documentation, including Environmental Assessments, Environmental Impact Statements, and various mitigation plans. Work involves utilizing compliance software and regulatory databases to ensure all deliverables meet strict USACE environmental processes and federal regulations. The project is based in Rock Island, Illinois, under NAICS code 541620. Interested parties must demonstrate proven expertise in NEPA regulations to successfully deliver the required draft documentation and mitigation strategies. The response deadline for this opportunity is December 4, 2026.

W07V Endist Rock Island

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DEADLINE

Freshwater Mussel Surveyors (Dive Team)This subcontract involves providing specialized dive teams to perform underwater surveys and inventories of endangered freshwater mussels for the USACE Rock Island District. The scope of work includes executing scuba diving operations for riverbed sampling, species identification, and biological data collection utilizing commercial diving gear and river transport vessels. The selected provider is responsible for delivering comprehensive mussel population data and detailed technical survey reports. To qualify for this engagement, personnel must hold valid commercial diving certifications and obtain the necessary permits from the US Fish and Wildlife Service and relevant state agencies. The project is categorized under NAICS code 541620 and is associated with the Department of Defense. Interested parties must respond by December 4, 2026, for performance based in Rock Island.

W07V Endist Rock Island

POSTED

DEADLINE

Endangered Species Surveyors (Bats)This subcontract opportunity, issued by the Department of Defense under the USACE Rock Island District, seeks qualified professionals to perform specialized field surveys and inventories for federally endangered bat species across the Midwest. The scope of work involves population monitoring and biological data collection utilizing mist nets, acoustic monitoring equipment, and other specialized capture gear. Selected contractors are responsible for delivering comprehensive species survey data and detailed technical reports to prime contractors. Compliance is a critical component of this contract, as personnel must hold mandatory permits from state resource agencies and the U.S. Fish and Wildlife Service. The project falls under NAICS code 541620 and is centered in Rock Island. Interested parties must submit their responses by the deadline of December 4, 2026.

W07V Endist Rock Island

POSTED

DEADLINE

Environmental & Field Support ServicesThis subcontract for Environmental and Field Support Services supports prime contractors on National Science Foundation Arctic Research Support and Logistics Services projects. The primary objective is to ensure research compliance through comprehensive field support and environmental monitoring. Key responsibilities include conducting site surveying, monitoring environmental impacts, and managing the setup and strike of field camps. The selected provider will utilize specialized GPS surveying equipment and environmental sampling kits to execute these tasks. Final deliverables include the establishment of functional field camps and the submission of detailed environmental compliance reports. This opportunity falls under NAICS code 541620 and is associated with the National Science Foundation.

National Science Foundation

POSTED

DEADLINE

H346--Legionella Water Testing

Solicitation # 36C26224Q1533

Solicitation 36C26224Q1533 is a Request for Quotation issued by the Department of Veterans Affairs Network Contracting Office 22 for Consolidated Water Utilities Management Services, specifically focusing on Legionella water testing. The scope of work includes water sampling and testing, sustainability services, equipment servicing, continuous water monitoring via a data acquisition system with Ethernet and 3G connectivity, and web-based data management. Services will be performed at multiple VA Health Care Systems across California, Arizona, and New Mexico, including facilities in Long Beach, Albuquerque, Prescott, Phoenix, Tucson, Loma Linda, Greater Los Angeles, and San Diego. The base period of performance is scheduled from September 1, 2026, to August 31, 2027. This procurement is a total set-aside for certified Service-Disabled Veteran-Owned Small Businesses (SDVOSB) under NAICS code 541620. Award will be based on the lowest price from a responsible offeror who passes a technical evaluation. Mandatory certifications for a passing grade include CDC Elite Lab Certification, ISO/IEC 17025 Lab Certification, and valid state licenses for water sampling and plumbing in California, Arizona, and New Mexico, as well as ASPE CPD certification for plumbing design review. The bid due date has been extended to November 10, 2026, at 10:00 AM Pacific Time, with answers to questions posted on November 3, 2026. Offers must be submitted electronically to Marc Torres.

262-NETWORK Contract Office 22 (36C262)

POSTED

about 14 hours ago

DEADLINE

in about 1 month

AI Contract Overview

This subcontract opportunity involves performing hydrologic and hydraulic (H&H) analysis, specifically focusing on stormwater modeling, drainage analysis, floodplain assessment, and hydraulic reporting to support design efforts. The contract is issued by the Texas Department of Transportation and is classified under NAICS code 541620, which relates to environmental consulting services. The work will support infrastructure projects by providing technical expertise in managing water flow and flood risks to aid engineering design decisions. The solicitation was posted on June 4, 2026, with responses due by June 25, 2026. While specific location details for the place of performance are not listed, the contract serves transportation projects within Texas. The subcontract does not specify any set-aside programs or particular organization types targeted, signaling an open opportunity for qualified firms experienced in hydrological and hydraulic analyses for public infrastructure design.