Proposal Alert
Expired RFP

Biosolids Removal Services

The City of Naperville is seeking a licensed biosolids hauling contractor to remove, transport, and land apply dewatered aerobically digested biosolids from the Springbrook Water Reclamation Center to agricultural land. The 24-month contract covers an estimated 26,000 cubic yards, with proposals due October 5, 2026. Compliance with USEPA and IEPA regulations is required.

City of Naperville IL

Categories

Water & Wastewater Utilities Wastewater treatment plant operations & upgrades Biosolids & sludge handling / disposal

Important dates

  • Published

  • Questions due

    Deadline for submission of questions and clarifications.

  • Submission deadline

    Deadline passed

AI overview

The City of Naperville is soliciting bids for biosolids removal services from the Springbrook Water Reclamation Center (SWRC). The selected contractor will be responsible for removing, transporting, and land applying dewatered aerobically digested biosolids (Class B centrifuge dewatered cake) to agricultural farmland and/or sod farms. The work must comply with USEPA Standards for the Use or Disposal of Sewage Sludge (40 CFR Part 503), IEPA Design Criteria for Sludge Application on Land (35 IAC Part 391), and the City's Land Application of Sewage Sludge Permit (2022-SC-67585), which expires September 30, 2027. The contract period is 24 months, with an estimated total quantity of 26,000 cubic yards (approximately 13,000 cubic yards per calendar year).

The biosolids are produced through an aerobic digestion process and dewatered using centrifuges. Prior to each land application event, the contractor may coordinate with SWRC staff to analyze split samples for total solids content. The City reserves the right to determine the method for weight and volume accountability, and the contractor must facilitate all SWRC staff requests for inspection, weight verification at certified scales, and monitoring to ensure accurate tracking of material hauled.

Key dates for this solicitation include a Q&A deadline of September 23, 2026 at 5:00 PM CT, and a proposal submission deadline of October 5, 2026 at 2:00 PM CT. The solicitation was released on September 11, 2026. Proposals must be submitted via the OpenGov procurement portal. The contractor must provide all necessary equipment, labor, and materials for biosolids removal and land application.

Attachments include a Land Application WPC Permit, an Insurance Sample, and a Contractor Safety Orientation Checklist. Bidders must complete and submit the Bid Worksheet, Bid Forms, and Vendor Questionnaire. Evaluation will be based on the lowest responsive bid meeting all specifications and requirements.

Resources & contact

Proposal Document

View proposal document

Solicitation number

26-221

Contact

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