PUBLIC UTILITIES DEPARTMENT
Request for Proposals
Primary Sludge Piping System
Replacement and Installation
Proposal
The City of St. Cloud, Minnesota is soliciting proposals from qualified vendors for valve and
piping component replacement for an existing Primary Sludge Conveyance System.
Background Information
The existing Primary Sludge Conveyance piping system was installed at the St. Cloud
Nutrient, Energy and Water (NEW) Recovery Facility in 1973. This system was modified in
2008 to its current configuration. This piping is necessary to convey solids from the primary
clarifiers to solids processing at the Gravity Belt Tables, (GBTs).
Location: 525 60 Street South, St. Cloud, MN 56301
Existing system details: 4” and 6” ductile iron piping, fitting and Dezurik quarter turn plug
valves with pneumatic cylinder actuators.
Material Specifications and Scope of Services
• 4” and 6” flanged ductile iron pipe, spool pieces, and fittings, cement lined
• Six (6) 6” plug valves with Rotork K-Tork rotary vane pneumatic actuator
• Four (4) 4” plug valves with Rotork K-Tork rotary vane pneumatic actuator
• Four (4) 6” isolation valves operated manually with a lever or handle
• All valves shall be 1/4 turn full port with included grease fittings
• All fasteners, anchors, and supports shall be 304 or higher grade stainless steel
• Globally sourced materials
• Removal and installation of piping system to be coordinated daily with facility staff to
maintain primary clarifier and GBT operations. Scheduled outages can be
coordinated with facility personnel; 24 hours’ notice is required, and any one outage
shall not exceed 8 consecutive hours
• Disconnect and reconnect all electrical and process air terminations
• Paint new piping, spool pieces, valves, and fittings with epoxy paint to match existing
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Resources Available
Site visit for measurements; see contact details in Additional Information below to
schedule site visit.
Submission Requirements
Proposals will be accepted by 4:00 PM(CST) on Friday, February 20, 2026, and are to be
submitted in PDF format via email to:
Jacob.Ethen@ci.stcloud.mn.us
Subject Line to Read: RFP Primary Sludge Piping System Replacement and Installation
Vendor Selection Process
The proposals will be evaluated based on qualifications and experience of the
vendor/supplier, the anticipated cost of services, and other appropriate factors (see
below).
Selection criteria shall include, but shall not be limited to, the following factors:
1. Related professional experience, specific project responsibility and availability of
key personnel assigned to the project.
2. Vendor/supplier recent experience in the provision of comparable wastewater
piping systems and design services including references.
3. Current lead-times
4. Anticipated cost.
As the contracting authority, the City of St. Cloud shall make the final decision concerning
vendor selection. The City reserves the right to negotiate professional services from the
selected consultant(s)/ contractor(s) as deemed necessary to fulfill the complete project
intent. The City reserves the right to terminate the contract and delete all remaining work
tasks at its discretion.
Schedule
Request For Proposals Advertised
Questions/site visits accepted
Proposals Due
Tentative Selection Announced
Finalize Work Plan, Fees and Contract
February 13, 2026
February 20, 2026
February 27, 2026, 4:00 PM(CST)
March 13, 2026
March 27, 2026
Additional Information
Site visit requests and/or questions should be submitted to the Wastewater Services
Manager by date listed above. Questions shall be submitted in writing via email.
Mr. Jacob Ethen, Wastewater Services Manager
Jacob.Ethen@ci.stcloud.mn.us
(320) 255-7226
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