This Subcontract opportunity from Wisconsin was posted on February 18, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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Biosolids Disposal and Land Application Services

Closed

State & Local

Submission Closed03/03/2026, 06:00:00 PM CST

Contract Overview

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

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NAICS: 221320

New

St. Peter Wastewater Treatment Facility Biosolids Improvement Project CMAR Bid Packages

Solicitation # st-peter-wastewater-treatment-facility-biosolids-improvement-project-cmar-bid-packages

Rice Lake Construction Group is seeking bids from M/W/DBE subcontractors and supplier firms for the St. Peter Wastewater Treatment Facility Biosolids Improvement Project in Minnesota. The project involves converting the biosolids process from lime pasteurization to heat drying and bagging. The comprehensive scope of work includes belt filter press rebuilds, new feed pumps, cake conveyance, odor control, tank aeration, a new thermal oil building, dry solids handling and bagging, and full mechanical, electrical, and controls installation. Because the plant must remain operational throughout construction, precise sequencing and temporary solids handling are critical requirements. Specific bid packages available include General Construction, Plumbing, Process Mechanical, and Process Equipment Installation. This solicitation is set aside for SBA certified Women-Owned Small Businesses and Disadvantaged Business Enterprises. Interested parties must submit their responses by November 17, 2026. Primary inquiries and submissions should be directed to Karen Calabro at Rice Lake Construction Group.

Rice Lake Construction Group

POSTED

DEADLINE

Metropolitan Council Blue Lake WRRF Digester #4

Solicitation # metropolitan-council-blue-lake-wrrf-digester-4

Rice Lake Construction Group is soliciting bids for the Metropolitan Council Blue Lake WRRF Digester 4 project located in Minnesota. The scope of work focuses on the addition of a fourth digester, the rehabilitation of the gravity thickener tank, and various electrical improvements. To support M/W/DBE companies, the project is broken down into multiple specialized scopes including sitework, excavation, concrete, metal fabrications, mechanical, electrical, and special coatings. This opportunity is specifically set aside for SBA certified Women-Owned Small Businesses and Disadvantaged Business Enterprises. Interested subcontractors must provide a commercially useful function to be eligible. The response deadline for this solicitation is December 2, 2026, and inquiries should be directed to Karen Calabro.

Rice Lake Construction Group

POSTED

DEADLINE

Water Reclamation Facility and Lift Station: Odor Control and Filtration Media Replacement

Solicitation # 2026-RFB-055

Solicitation 2026-RFB-055 is a turnkey project issued by the Las Virgenes Municipal Water District-Triunfo Sanitation District Joint Power Authority for the replacement of activated carbon in odor control towers and the changeout of media in two tertiary filters at the Tapia Water Reclamation Facility and Lift Stations 1 and 2. The scope of work includes the provision of all materials and equipment necessary for the removal and disposal of spent activated carbon, anthracite, and gravel media, as well as the replenishment of new media. The project must be completed within four months of the purchase order award, with work performed Monday through Friday between 7:00 AM and 3:00 PM. The contract will be awarded to the lowest responsible responsive bidder based on the total estimated project cost. Bidders must submit their proposals exclusively through the Procurement Portal using prescribed bid forms, including a reference list of three public entities, technical data sheets, and GHS-SDS safety data. Due to the nature of the work, strict adherence to OSHA confined space requirements is mandatory, requiring contractors to be certified and to provide a detailed entry plan. Required insurance coverages include General Liability, Product Liability, and Automotive Liability with minimum limits of 1 million dollars per occurrence, as well as California statutory limits for Workers Compensation. All materials must be delivered FOB Destination Freight Pre-Paid and Allowed to designated locations in Calabasas, California.

Water Ops, Water Reclamation

POSTED

DEADLINE

Odor and Corrosion Control

Solicitation # 2027-006-JS

The City of Sarasota is soliciting competitive bids from licensed Florida General Contractors for the installation and maintenance of odor control process equipment at various water and wastewater treatment facilities, including the Water Treatment Plant, Wastewater Treatment Plant, and specific lift stations such as LS10, LS16, and LS40. The scope of work requires the contractor to provide all personnel, materials, and services to reduce wastewater odors, which includes the annual delivery of approximately 30,000 gallons of chemicals, monthly site monitoring, and 24/7 availability to respond to odor complaints within two hours and equipment failures within four hours. Contractors must also implement a service program to record hydrogen sulfide data every five minutes and ensure all storage tanks are labeled according to local, state, and federal regulations. The contract will be awarded to the lowest responsible and responsive bidder, with preferences given to local Sarasota County businesses and those with certified drug-free workplace programs. Bids are due by December 3, 2026, and must be submitted as a single consolidated PDF via the city's online solicitation portal. Required documentation includes a Vendor Questionnaire, Pricing Table, Public Entity Crimes Form, E-Verify Affidavit, and a notarized affidavit regarding prohibitions on contracting with entities from foreign countries of concern. Awarded vendors must maintain specific insurance coverage from carriers licensed in Florida with minimum A.M. Best ratings of A Excellent, or B+ Good for Worker's Compensation.

POSTED

DEADLINE

REQUEST FOR QUALIFICATIONS/PROPOSALS FOR TREATMENT FACILITIES OPERATIONS AND MAINTENANCE SERVICES

Solicitation # RFQ_Operations_And_Maintenance_Stormwater_2026

The City of Malibu is seeking qualified vendors to provide operations and maintenance services for its treatment facilities, specifically focusing on stormwater management. This solicitation, identified as RFQ_Operations_And_Maintenance_Stormwater_2026, is open to interested parties who can demonstrate the necessary expertise to maintain these critical local infrastructure assets within Malibu, California. Interested proponents must submit their qualifications and proposals by the closing deadline of December 1, 2026, at 4:00 PM PT. Detailed bid documents and submission requirements are available through the City of Malibu's official procurement portal, and vendors are responsible for monitoring the site for any addenda or updates related to the request.

POSTED

DEADLINE

Y--GRCA 257282 - Replace Wastewater Plant at South Ri

Solicitation # 140P2026R0101

Solicitation 140P2026R0101 is an unrestricted full and open competition for the replacement of the South Rim Wastewater Treatment Plant at Grand Canyon National Park, Arizona. This design-bid-build project, managed by the National Park Service DSC Contracting Services Division, has an estimated magnitude exceeding 100 million dollars. The scope of work involves the construction of a GD Membrane Bio-Reactor plant capable of handling a 0.65 million gallons per day maximum monthly flow and 1.2 million gallons per day peak hour flow. Key deliverables include the production of Class A+ reclaimed water and Class B biosolids, the construction of headworks, process buildings, a digester facility, compost and odor control facilities, and support buildings for administration and maintenance. The project also includes access road improvements and a 12-month operational support period following construction. The period of performance is scheduled from February 1, 2027, to February 1, 2030, with a total duration of 1095 calendar days after the notice to proceed. Award will be based on a multi-factor, best-value tradeoff process evaluating technical approach, key personnel experience, project experience, management approach, schedule, small business participation, and past performance. Required key personnel include a Project Manager, Superintendent, and specialists in Quality Control, Safety, and Historic Preservation. The contract requires performance and payment bonds, adherence to union prevailing wage rates, and compliance with Department of the Interior cybersecurity and accessibility standards. Proposals must be submitted electronically in separate volumes, with a final response deadline extended to December 18, 2026.

Dsc Contracting Services Division

POSTED

DEADLINE

Manufacture and Supply of MABR SolutionsThis subcontract focuses on the manufacture and supply of Membrane Aerated Biofilm Reactor (MABR) systems and associated hardware for wastewater treatment projects managed by Severn Trent Water Limited. The scope of work involves producing MABR modules and reactor components specifically designed for the intensification of Activated Sludge Plants, with a requirement that all delivered equipment complies with UK water industry standards. The contract involves the delivery of fully manufactured systems and modules directly to the project sites. Interested parties must submit their responses by December 16, 2026, to support prime contractors in executing these critical infrastructure improvements.

Severn Trent Water Limited

POSTED

DEADLINE

Procurement of Membrane Aerated Biofilm Reactor (MABR) systems

Solicitation # ocds-h6vhtk-06eee1

Severn Trent Water Limited is establishing a multi-supplier Framework Agreement for the provision of Membrane Aerated Biofilm Reactor (MABR) systems and associated services, including design support and manufacture. This procurement supports the AMP8 Activated Sludge Plant Intensification Programme and the wider Net Zero Investment Programme, focusing on wastewater treatment assets across the STW region. The current indicative portfolio includes approximately 11 wastewater treatment sites, with the potential for additional opportunities in future AMP8 and AMP9 investment programmes. The total estimated value of the framework is 44,400,000 GBP excluding VAT. The agreement is set for an initial term of four years, anticipated to run from March 31, 2027, to March 31, 2031, with an option to extend for an additional four years through March 30, 2035. Award decisions will be based on a competitive flexible procedure consisting of a Pre-Qualification Questionnaire (PQQ) stage, a Request for Proposal (RFP) stage, negotiations, and a Best and Final Offer (BAFO). Evaluation is heavily weighted toward quality at 70% and price at 30%. While the framework allows for both direct awards and mini-competitions, there is no guarantee of work, volume, or value for the appointed suppliers.

Severn Trent Water Limited

POSTED

DEADLINE

HDPE Raw Water Main InstallationThis subcontract involves the installation of 12-inch, 14-inch, and 16-inch DR-11 DIPS HDPE raw water mains for prime contractors working on City of Stuart water treatment plant projects. The scope of work includes horizontal directional drilling, open trench excavation, and HDPE pipe fusion, along with the management of entry and exit pits, backfill, compaction, and frac-out control. The contractor is responsible for installing pipe marking tape and tracer wire in accordance with the City of Stuart Water and Sewer Standard Specifications and 2014 EPA lead-free brass standards. The final deliverable is a fully tested raw water main system. This opportunity is categorized under NAICS code 221320 and is managed by the Utilities and Engineering agency in Florida, with a response deadline of December 18, 2026.

Utilities and Engineering

POSTED

DEADLINE

WWTF Sludge Removal ServicesThis subcontract for WWTF Sludge Removal Services involves the extraction and removal of sludge from Wastewater Treatment Facilities for prime contractors working on Putnam County School Board projects. The scope of work requires the use of vacuum trucks and specialized pumping equipment to handle the extraction, transportation, and legal disposal of all removed materials, ensuring that systems are delivered empty and cleaned. The project is managed under the Maintenance agency in Florida and falls under NAICS code 221320. All operations must be conducted with District authorization and in strict compliance with environmental regulations governing wastewater transport. The solicitation was posted on November 4, 2026, with a response deadline of December 2, 2026.

POSTED

DEADLINE

RFI 26-089 Operations Maintenance and Rehabilitation (OMR) and Biogas Upgrader Procurement

Solicitation # Doc2463909393

The City of Calgary is issuing Request for Information RFI 26-089 to identify qualified firms or consortia interested in providing Operations Maintenance and Rehabilitation (OMR) services and Biogas Upgrader Offtaker services. The city is seeking industry input to determine the most effective procurement strategy, specifically whether to solicit the OMR Provider and Offtaker as separate standalone roles or to combine them into a single integrated contract. Interested parties must submit their responses by November 30, 2026. This sources-sought opportunity is designed to gather market intelligence to shape the upcoming competitive process for these critical infrastructure roles based in Calgary, Canada.

POSTED

DEADLINE

Solicitation # 26-0335

The City of Fort Worth is soliciting proposals under RFP 26-0335 to establish a fixed-price agreement for an integrated odor and corrosion control program for its wastewater collection system and the Village Creek Water Reclamation Facility. The selected vendor will provide services on an as-needed basis, including treatment assessments, the supply of chemicals such as Ferric Sulfate and Magnesium Hydroxide, H2S level monitoring, and the installation of equipment. A key technical requirement is the provision of a cellular-based remote telemetry control system for continuous monitoring of tank levels, dosage control, and real-time alarms. Performance will be measured by the ability to reduce odors and prevent infrastructure corrosion, with the vendor required to develop written standard operating procedures for operational safety and maintenance at the Village Creek facility. Proposers must possess at least five years of experience in similar tasks and submit a comprehensive proposal via the Euna Portal by December 3, 2026. Evaluation is based on best value, with scoring weighted across small business participation, delivery and support, cost, technical ability, experience, and performance monitoring. A significant requirement is the 30 percent small business participation goal. Awardees must maintain substantial insurance coverage, including 1 million dollars for general liability, automobile liability, and professional liability. All chemical deliveries are FOB Destination, and the vendor assumes all risk and cost for delivery and any associated chemical spills.

City Of Fort Worth

POSTED

9 days ago

DEADLINE

in 20 days

AI Contract Overview

The Madison Metropolitan Sewerage District in Wisconsin is seeking a subcontractor for Biosolids Disposal and Land Application Services. The selected provider will be responsible for the receipt, management, and final disposal or beneficial reuse of anaerobically digested sewage sludge. Permissible methods for handling the material include land application, composting, or dewatering, all of which must be performed in strict compliance with WDNR regulations. This opportunity was posted on February 18, 2026, with a response deadline of March 4, 2026. The contract falls under NAICS code 221320, focusing on the specialized handling and environmental management of sewage sludge to ensure regulatory adherence and sustainable disposal practices.

General Info

Agency

Wisconsin → Madison Metropolitan Sewerage District

NAICS

221320 - Sewage Treatment Facilities

Place of Performance

WI, USA

Set-Aside

NONE

Documents

This scope was carved out of 2026 Digester Cleaning Project.

The full solicitation package (1 document), including the RFP, is on the prime solicitation, not on this scope.

View the prime solicitation

Digester Cleaning Project

AI Contract Breakdown

Uniform Contract Format

No documents to break down

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Timeline

PhaseClosed

PostedFeb 18

subcontract

Response DeadlineMar 3

Deadline has passed

Submission Closed

03/03/2026, 06:00:00 PM CST

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Organization & Contact Information

AgencyWisconsin → Madison Metropolitan Sewerage District

ContactsNo contacts available

OfficeN/A

Organization / AgencyWisconsin → Madison Metropolitan Sewerage District

Office AddressN/A

ContactsNo contact information available

Full Description

Receive, manage, and dispose of or beneficially reuse anaerobically digested sewage sludge through land application, composting, or dewatering in compliance with WDNR regulations.