Active SLED Opportunity · ILLINOIS · CITY OF NAPERVILLE, IL
AI Summary
The City of Naperville seeks consulting services for design engineering and permitting for tertiary filter improvements at its Springbrook Water Reclamation Center to increase wastewater treatment capacity and upgrade aging filtration systems. Proposals are due May 18, 2026.
The City of Naperville is seeking to retain the services of a qualified and experienced consultant to perform design engineering, permitting and bid phase services for the The North & South Plant Tertiary Filter Improvements Project at Springbrook Water Reclamation Center (SWRC).
The City of Naperville, incorporated in 1857, is located in southwestern DuPage County and northwestern Will County and covers an area of approximately 39 square miles. The City is a home rule unit of local government under the 1970 Illinois Constitution. The City has been one of the fastest growing communities in the Chicago Metropolitan area and is the fourth largest city in Illinois. The population is currently approximately 149,000 and is expected to grow to approximately 160,000.
The City of Naperville Water Utilities owns and operates Springbrook Water Reclamation Center (SWRC), treating wastewater from Naperville and City of Warrenville, serving a population of 162,563. SWRC uses a conventional activated sludge wastewater treatment process with secondary and tertiary treatment at a rated design capacity of 26.25 million gallons per day (MGD).
The SWRC facilities are divided into the North Plant and the South Plant. Screening occurs prior to raw wastewater pumping, after which separate force mains split the flow between the two plants. The existing sand filters provide service for the North Plant flow only, and the flow from the South Plant is currently discharged directly to UV disinfection without filtration.
The North Plant was originally constructed in 1974 and has a rated design capacity of 26.25 MGD, with a treatment train includes vortex grit removal, activated sludge aeration basins with vertical turbine aerators/mixers, secondary clarifiers, tertiary filtration, and seasonal disinfection. The disinfection system for the entire facility was replaced with a UV system in early 2024.
Construction of the Influent Pump Station is scheduled for completion in summer 2026. The South Plant Grit & RAS project and the South Plant expansion are currently under construction. The South Plant Grit & RAS project is expected to be completed by the end of 2026, and the South Plant expansion is anticipated to be completed in spring 2028.
Construction of the North Plant improvements and tertiary filters is planned to begin in 2028. The goal of these improvements is to increase the treatment capacity and achieve an even 50/50 capacity split between the North and South Plants.
Based on the facilities improvement evaluation plan completed by Donohue in January 2022, the current North Plant filters have the following issues:
The proposed filters will be divided into a North Plant Filter and a South Plant Filter. Each will serve flows from the North Plant and South Plant, respectively. The North and South plant filters will use cloth media disc filter technology. Together with other improvements, the system will achieve a design average flow of 26.25 MGD and a design maximum flow of 73.19 MGD, while also providing a 50/50 flow split between the two plants.
A Mandatory Pre-Proposal meeting was held on April 3, 2026 at 10:00am in the Springbrook Conference Room at 3712 Plainfield/Naperville Rd, Naperville, IL 60564. The sign-in sheet from the meeting is attached.
In addition, insurance requirements were modified to remove the Cyber and Aviation requirements.
Please use the See What Changed link to view all the changes made by this addendum.
Additional documents are being provided to provide more information regarding questions submitted. See attached documents.
Submit one (1) electronic copy (PDF format), which shall include the following sections:
☐ Capability, Capacity and Qualifications of the Proposer
☐ Suitability and Quality of the Approach
☐ Milestones and Deliverables
Submit one (1) electronic copy (PDF format) of the Technical Proposal Response with information that may be exempt from disclosure under FOIA redacted. See the Illinois Freedom of Information Act section of the City’s General Terms and Conditions on page X for additional information regarding what can be redacted.
Submit one (1) electronic copy (PDF format) of any exceptions to the City’s Consultant Services Agreement set forth in Appendix F of this RFP. Such exceptions may be considered in the evaluation and award processes. The City will be the sole determiner of the acceptability of any exception. Any exceptions submitted may render the submission as non-responsive to the requirements listed.
Please download the below documents, complete, and upload.
Ex. consulting services for the selection and implementation of a new utility billing (UB)/customer information system (CIS) solution for electric, water, wastewater, and refuse/recycling collection services
ex. Finance Department, Information Technology Department, Water/Wastewater Utility and Electric Utility
Q (No subject): Should the fee be included in the proposal approach (not under separate cover)?
A: Your pricing proposal should be included under Criteria 2, Suitability and Quality of the Approach.
Q (No subject): Will the fee be part of the score for the project approach?
A: Your Pricing Proposal will be factor into your score for Criteria 2, Suitability and Quality of the Approach
Q (No subject): Can you provide copies of the current hydraulic grade lines for both the North and South Plants?
A: See attached document in Addendum #2
Q (No subject): Were the profiles developed using spreadsheets or commercially available software? If software, please indicate the name of the platform.
A: Biowin.
Q (No subject): Can you provide record copies of the engineering drawings for the two existing chlorine contact tanks (plan and sections)?
A: See attached document in Addendum #2
Q (No subject): Can you provide record copies of the engineering drawings for the piping from both the North Plant and South Plant, starting at each collection chamber downstream of the secondary clarifiers and extending through the UV system?
A: See attached document in Addendum #2
Q (No subject): Can you confirm no stormwater detention is required for this project?
A: No stormwater detention is required.
Q (No subject): Is cloth media the only acceptable filter media for the project?
A: Yes.
Q (No subject): What is the duration of the North Plant Upgrade project construction?
A: 2027-2030
Q (No subject): Where, within the plant, is the current spent filter backwash returned?
A: The filter backwash is discharged into surge tanks on the east and west ends of the North Plant Chlorine Contact Tanks. The backwash is then drained to the head of the plant.
Q (No subject): Does the City intend to pursue a low-interest loan through the State of Illinois State Revolving Loan Fund Program?
A: No.
SLED stands for State, Local, and Education. These are solicitations issued by state governments, counties, cities, school districts, utilities, and higher education institutions — as opposed to federal agencies.
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