Digester Cleaning Project
Closed State & local contract opportunity Posted
- Solicitation number
- MMSD, 2026, Digester Cleaning Project
- State
- Wisconsin
- Responses due
Opportunity facts
- Jurisdictions
- NIGP codes
- Point of contact
-
- Matthew Leitzen mattl@madsewer.org (608) 222-1201
Opportunity details come from vendornet.wi.gov. Updated .
About this opportunity
The Madison Metropolitan Sewerage District (MMSD) is issuing a sealed bid solicitation for the 2026 Digester Cleaning Project at the Nine Springs Wastewater Treatment Facility in Madison, Wisconsin. The procurement involves the removal and legal disposal of approximately 105,000 gallons (180 dry tons) of anaerobically digested sludge from each of three anaerobic digesters, comprehensive cleaning of all interior tank surfaces, and removal of inorganic waste and debris. Contractors must possess a minimum of three years of active experience in digester cleaning or similar confined-space work and must submit prequalification applications by 4:00 p.m. on Wednesday, February 25, 2026, to prequalifications@madsewer.org, with disqualification notifications issued by 4:00 p.m. on Friday, February 27, 2026. Sealed bids are due by 1:00 p.m. CST on Wednesday, March 4, 2026, at MMSD's office located at 1610 Moorland Road, Madison, Wisconsin 53713, with bids publicly opened and read aloud at that time. The successful contractor shall commence work following a Notice to Proceed anticipated for April 27, 2026, and must complete all work within 180 calendar days from that date (by October 30, 2026) or within 130 days of starting on-site work, whichever is earlier, with liquidated damages assessed at $500 per day for delays beyond the deadline. Pricing shall be submitted as a lump-sum bid based on estimated volumes at a 41.1% solids concentration, with payment calculated on actual dry tons processed at the unit bid price per dry ton, plus separate lump-sum amounts for interior cleaning of each digester.
The solicitation does not specify set-aside designations or restrictions limiting responses to particular categories of organizations such as disadvantaged enterprises, women-owned businesses, or minority-owned businesses. No incumbent vendors or current contractors are identified in the available documentation. The contractor is responsible for obtaining all necessary permits and providing all labor, materials, equipment, transportation, and disposal services in compliance with OSHA, EPA, RCRA, and applicable local, state, and federal regulations. Insurance requirements include comprehensive general liability coverage with a $2,000,000 general aggregate limit and $1,000,000 each occurrence limit, business automobile liability of $1,000,000, umbrella liability of $2,000,000, and worker's compensation insurance. The MMSD reserves the right to reject any or all proposals and will award the contract to the lowest qualified, responsive, and responsible bidder within 30 days of bid opening. Specific budget or award value information is not disclosed in the available documentation.
Opportunity text
Specifications are available by visiting the District website at: https://www.madsewer.org/contracting-center
The Madison Metropolitan Sewerage District (The District) will receive sealed proposals for the 2026 Digester Cleaning Project. Bids will be received at the office of the District, 1610 Moorland Road, Madison, Wisconsin 53713 until 1:00 p.m., CST, Wednesday, March 04, 2026, at which time and place all proposals will be publicly opened and read aloud.
All proposals must be made on the forms provided herein and shall be addressed to the Madison Metropolitan Sewerage District; Aaron Dose, Process and Project Specialist; 1610 Moorland Road, Madison, Wisconsin 53713 (or emailed to rfp@madsewer.org); and shall be marked "Sealed Proposal, 2026 Digester Cleaning Project."
All prospective prime bidders must submit qualifications for review and approval by the District. Prequalification applications will be distributed with the Contract Documents upon request of the District. Bidders who have already submitted prequalification documentation to the District within last calendar year of the bid date need not resubmit but must notify the District in writing by the due date (using the form provided) of their desire to prequalify for this specific work.
Prequalification applications must be completed and emailed to prequalifications@madsewer.org no later than 4:00 p.m., Wednesday, February 25, 2026. Bidders will be notified only of disqualification no later than 4:00 p.m., Friday, February 27, 2026. If a Bidder has not filed the prequalification application, their bid shall not be opened. For the cleaning contractor to be qualified, they must have at least 3 years of active experience in this type of work.
Only formal written addenda can materially alter the specifications. No verbal statement made by District employee or anyone else is binding nor shall such a statement be considered an official part of this public proposal. All bid responses and their contents will be public record.
Bidders are responsible for ensuring their emailed bid is received and complies with published Microsoft Quarantine email guidelines. Confirmation of receipt will be sent within one business day. If you do not receive confirmation, contact 608-222-1201 EXT 110 immediately.
Unless otherwise specified in the bidding documents, the prospective bidders should check our internet site for any addendum 72 hours before the scheduled bid deadline.
The District is federal and state tax exempt. The District reserves the right to reject any or all proposals or to waive any technicality and accept any proposal which may, in its opinion, be advantageous to the District.
Any questions may be directed to:
Aaron Dose
Process and Project Specialist
Madison Metropolitan Sewerage District
1610 Moorland Rd
Madison, WI 53713
608-709-1811
rfp@madsewer.org
Published by authority of the Commissioners of the Madison Metropolitan Sewerage District. By
Brad J. Murphy, Secretary
Files
| File | Type | Posted |
|---|---|---|
| Bid Package - 2026 Digester Cleaning.pdf |
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