Acceptance Granger Creek Lift Station Improvements Copyrighted
April 20, 2026
City of Dubuque CONSENT ITEMS # 9.
City Council
ITEM TITLE: Acceptance Granger Creek Lift Station Improvements
SUMMARY: City Manger recommending City Council adopt the attached
resolution accepting the public improvement, establishing the
final contract amount at $1,257,914.83, and authorize the
payment of the final contract retainage amount of$62,895.74
to Tri-Con General Construction Inc. for the Granger Creek
Sanitary Sewer Pump Station Modification Project. This is a
3.02% increase from the original contract amount of
$1,221,000.00.
RESOLUTION Accepting the Granger Creek Sanitary Sewer
Pump Station Modification Project
SUGGUESTED Receive and File; Adopt Resolution(s)
DISPOSITION:
ATTACHMENTS:
1. MVM Memo Granger Creek Sanitary Sewer Pump Station Modification Project
acceptance of public improvement construction contract
2. Granger Creek Lift Station Upgrade Project - Staff Acceptance MEMO
3. Granger Creek Lift Station Upgrade Project - Council Acceptance RESOLUTION
Page 266 of 901
Dubuque
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TO: The Honorable Mayor and City Council Members
FROM: Michael C. Van Milligen, City Manager
SUBJECT: Granger Creek Sanitary Sewer Pump Station Modification Project
Acceptance of Public Improvement Construction Contract
Project No. 5581500009
DATE: April 14, 2026
City Engineer Gus Psihoyos is recommending City Council adopt the attached
resolution accepting the public improvement, establishing the final contract amount at
$1,257,914.93, and authorize the payment of the final contract retainage amount of
$62,895.75 to Tri-Con General Construction Inc. for the Granger Creek Sanitary Sewer
Pump Station Modification Project. This is a 3.02% increase from the original contract
amount of $1,221,000.00.
I concur with the recommendation and respectfully request Mayor and City Council
approval.
v
Mic ael C. Van Milligen
MCVM:sv
Attachment
cc: Crenna Brumwell, City Attorney
Cori Burbach, Assistant City Manager
Gus Psihoyos, City Engineer
Todd Irwin, Water Resource Project Supervisor
Jenny Larson, Chief Financial Officer
Bob Schiesl, PE, Assistant City Engineer
Max O'Brien, PE Assistant Public Works Director
Deron Muehring, Water & Resource Recovery Center Director
Page 267 of 901
Dubuque
THE CITY OF �
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TO: Michael C. Van Milligen, City Manager
FROM: Gus Psihoyos, City Engineer
SUBJECT: Granger Creek Sanitary Sewer Pump Station Modification Project
Acceptance of Public Improvement Construction Contract
Project No. 5581500009
DATE: April 14, 2026
INTRODUCTION
The enclosed resolution provides for establishing the final contract amount, and
acceptance of the public improvement construction contract for the Granger Creek Lift
Station Upgrade Project.
BACKGROUND
In 1998 the City began to extend sanitary sewer along Granger Creek, for the Dubuque
Technology Park development. The Granger Creek Interceptor Sewer (GCIS)
extension consisted of the Granger Creek Pump Station and approximately 17,600 LF
of both 20 inch and 18" diameter pipe. In 2015, the City extended the interceptor sewer,
continuing along Granger Creek and U.S. Highway 151/61, to the Dubuque Regional
Airport. The GCIS extension increased the sanitary Sewer Shed 4 to approximately
6,300 acres.
Since the GCIS and the extension to the Dubuque Regional Airport has been
completed, several adjacent areas, in or near Key West, have connected to the City's
sewer system such as; Table Mound Mobile Home Park, Kerrigan Heights Subdivision,
Truck Country, a portion of Twin Ridge Subdivision, and Silver Oaks Subdivision.
Tamarack Business Park and the City's Crossroads Industrial Park, along with other
adjacent parcels, are also able to be served by GCIS.
The City of Dubuque submitted a facility plan, based on the results of an intensive
evaluation of the existing interceptor collection and pumping systems that convey
sewage to the Water Resource Recovery Center (WRRC), to lowa Department of
Natural Resources (IDNR), in September of 2021. The facility plan identified three
improvement projects related to the Granger Creek Interceptor Sewer System
Improvements: Granger Creek Sanitary Sewer Pump Station Modification Project, Twin
Ridge Sanitary Sewer Extension and Lagoon Abandonment Project and the Tamarack
Sanitary Sewer Extension Project.
The Granger Creek Sanitary Sewer Pump Station Modification Project will increase the
firm pumping capacity of the existing Granger Creek Lift Station from 0.5 MGD to 2.9
Page 268 of 901
MDG which will provide the needed capacity to serve existing and proposed
developments within sewer shed 4.
DISCUSSION
The Granger Creek Sanitary Sewer Pump Station Modification Project is one of three
projects included in a single State Revolving Fund (SRF) loan being utilized to fund the
projects. The SRF loan, in the amount of $2,536,000 along with an EPA Community
Grant in the amount of $1,000,000, for a total of $3,536,000 provided the funding for the
three projects that are included in the Granger Creek Sanitary Sewer System
Improvements Facility Plan. The three projects are: Twin Ridge Sanitary Sewer
Extension and Lagoon Abandonment Project (5581500024), Tamarack Sanitary Sewer
Extension Project (5581500001), and Granger Creek Sanitary Sewer Pump Station
Modification Project (5581500009). The EPA Community Grant was applied for and
awarded after the SRF loan had been applied for and closed on, and was only
applicable to the construction contract for the Granger Creek Sanitary Sewer Pump
Station Modification Project. The EPA Community Grant required a 20% local match.
The 20°/o local match utilized a portion of the SRF loan funding, to meet the requirement
of the Grant.
BUDGET IMPACT
The Granger Creek Sanitary Sewer Pump Station Modification Project has been
completed by Tri-Con General Construction Inc, of Dubuque, lowa in the final contract
amount of $1,257,914.93. This is a 3.02% increase from the original contract amount of
$1,221,000.00.
The table below details the final total project cost for the Granger Creek Sanitary Sewer
Pump Station Modification Pro'ect:
Description Award Final
Planning & Design $ 166,200.00 $ 166,200.00
Construction $ 1,221,000.00 $ 1,257,914.93
Contract Admin / Construction Engineering $ 203,100.00 $ 262,999.67
Contingency $ 146,218.18 $ 0.00
City Staff & Legal $ 38,181.82 $ 38,181.82
0.5% SRF Loan Origination Fees $ 2,126.70 $ 2,126.70
Total Project Cost 1 776 826.70 $ 1,727,423.12
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Page 269 of 901
The SRF loan, for all three projects, was funded through multiple Fiscal Year
appropriations. The funding summary of the loan amount allocated to the Granger
Creek Sanitar Sewer Pump Station Modification Pro'ect is detailed below:
Granger Creek Sanitary Sewer Pump Station Modification Project Funding
FY 22 5581500009 Catfish/Granger Lift Station Improvements $ 130,000.00
FY 23 5581500009 Catfish/Granger Lift Station Improvements $ 607,650.00
FY 24 5581500009 Catfish/Granger Lift Station Improvements $ 134,265.99
FY 24 5581500009 EPA Community Grant $ 1,000,000.00
Total SRF & EPA Grant Project Funding 1,871,915.99
All three of the Granger Creek Sanitary Sewer System Improvement Projects were
completed under budget which resulted in remaining balance of available SRF funding.
The remainin amount for each pro'ect bud et is summarized in the table below.
Granger Creek Sanitary Sewer Improvements — Remaining SRF Funding
5581500009 Remaining SRF Funding from Granger Lift Station � 144,492.97
Improvements
5581500024 Remaining SRF Funding from Twin Ridge Lift � 2g5,783.43
Station Abandonment Project
5581500001 Remaining SRF Funding from Tamarack Sanitary � 153,808.07
Sewer Extension Project
Total Remaining SRF Project Funding $ 584,084.47
(Note:The Twin Ridge Sanitary Sewer Extension and Lagoon Abandonment Project
(5581500024) and the Tamarack Sanitary Sewer Extension Project (5581500001) were
accepted, by the City, at the City Council meeting held on November 17, 2025.)
RECOMMENDATION
I recommend that the City Council accept the public improvement, establishing the final
contract amount at $1,257,914.93, and authorize the payment of the final contract
retainage amount of $62,895.85 to Tri-Con General Construction Inc. for the Granger
Creek Sanitary Sewer Pump Station Modification Project.
ACTION TO BE TAKEN
The City Council is requested to adopt the attached resolution accepting the public
improvement, establishing the final contract amount at $1,257,914.93, and authorize the
payment of the final contract retainage amount of $62,895.85 to Tri-Con General
Construction Inc. for the Granger Creek Sanitary Sewer Pump Station Modification
Project.
3
Page 270 of 901
Prepared by Todd Irwin, Water Resource Project Supervisor
cc: Jenny Larson, Chief Financial Officer
Bob Schiesl, PE, Assistant City Engineer
Max O'Brien, PE Assistant Public Works Director
Deron Muehring, Water & Resource Recovery Center Director
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Page 271 of 901
Prepared by: Kerry Bradley, City of Dubuque Engineering, 50 W. 13th Street, Dubuque, IA 52001 (563)589-4270
Return to: Adrienne N. Breitfelder, City Clerk, 50W 13th Street, Dubuque, IA 52001 (563)589-4100
RESOLUTION NO. 125-26
ACCEPTING THE GRANGER CREEK SANITARY SEWER PUMP STATION
MODIFICATION PROJECT
WHEREAS, the Granger Creek Sanitary Sewer Pump Station Modification Project (the
Project) the project consisted of the replacement of the submersible pumps within an
existing Granger Creek Pump Station wet well, located at 8896 Mar Jo Quarry Rd,
removal and replacement of an existing valve vault, replacement of related force main
piping, valves, supports and appurtenances, removal and replacement of existing
electrical and controls housed within the Catfish Creek Pump Station building. The
project also included modifications to the HVAC system and roofing replacement for the
existing Catfish Creek Pump Station building; and
WHEREAS, the Public Improvement Contract for the Project has been completed
by the contractor, Tricon General Construction, Inc. (Contractor), and the City Engineer
has examined the work and recommends that the Project be accepted; and
WHEREAS, the final contract amount for the Project is $1,257,914.93; and
WHEREAS, the Contractor has previously been paid $1,195,019.09, leaving a
retainage balance of $62,895.85; and
WHEREAS, the City Council finds that the recommendation of the City Engineer
should be accepted.
NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF
DUBUQUE, IOWA:
SECTION 1. The recommendation of the City Engineer is approved, and the
Project is hereby accepted.
SECTION 2. The Chief Financial Officer is hereby directed to pay the balance of
the retainage of $62,895.85 as provided in Iowa Code Chapter 573, and to pay such
retainage in accordance with the provisions of Iowa Code Chapter 573 or Iowa Chapter
26.13.
Passed, approved and adopted this 20th day of April 2026.
rad M. agh, Mayor
Attest:
Trish L. Gleason, Assistant City Clerk
CITY ENGINEER CERTIFICATE OF FINAL COMPLETION OF THE GRANGER CREEK
SANITARY SEWER PUMP STATION MODIFICATION PROJECT
The undersigned Gus Psihoyos, City Engineer of the City of Dubuque, Iowa,
hereby certifies that he has inspected the Granger Creek Sanitary Sewer Pump Station
Modification Project and work has been performed in compliance with the terms of the
Public Improvement Contract, and that the total cost of the completed work is
$1,727,423.12.
Dated this 14th day of April, 2026.
Gus Psihoyos, City Engineer
Filed in the office of the City Clerk on the 0 i day of
Trish L. Gleason, Assistant City Clerk