Grand River Center Floor Slab Lifting & Leveling Project - Acceptance of Public Improvement Construction ContractCity of Dubuque
City Council
CONSENT ITEMS # 6.
Copyrighted
September 2, 2025
ITEM TITLE: Grand River Center Floor Slab Lifting & Leveling Project -
Acceptance of Public Improvement Construction Contract
SUMMARY: City Manager recommending City Council adopt the attached
resolution accepting the improvements and authorize the final
payment of the contract amount of $73,286.20 to Keller North
America, Inc., for the Grand River Center Floor Slab Lifting &
Leveling Project.
RESOLUTION Accepting The Grand River Center Floor Slab
Lifting & Leveling Project
SUGGUESTED Receive and File; Adopt Resolution(s)
DISPOSITION:
ATTACHMENTS:
1. MVM Memo_Updated_Uploaded 8.29.25
2. MVM Memo
3. 2025 Grand River Center Floor Settlement Lift Leveling Project - Acceptance Memo
4. 2025 Grand River Center Floor Settlement Lift Leveling Project - Acceptance
Resolution
5. 2025 Grand River Center Floor Settlement Lift Leveling Project - Engineers
Certificate
6. 2025 Grand River Center Floor Settlement Lift Leveling Project - Keller COUNCIL
FINAL
Page 72 of 629
THE CITY OF
DUBE
Masterpiece on the Mississippi
TO: The Honorable Mayor and City Council Members
FROM: Michael C. Van Milligen, City Manager
SUBJECT: Grand River Center Floor Slab Lifting & Leveling Project
Acceptance of Public Improvement Construction Contract
Project No. 3346000014
DATE: August 27, 2025
Dubuque
AI WIN av
2007-2012.2013
2017*2019
City Engineer Gus Psihoyos is recommending City Council adopt the attached
resolution accepting the improvements and authorize the final payment of the contract
amount of $73,286.20 to Keller North America, Inc., for the Grand River Center Floor
Slab Lifting & Leveling Project.
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
Robert Schiesl, Assistant City Engineer
Stephen Fehsal, Interim Parks and Recreation Director
Marie Ware, Acting Project and Facilities Manager
Page 73 of 629
THE CITY OF
DUBE
Masterpiece on the Mississippi
TO: The Honorable Mayor and City Council Members
FROM: Michael C. Van Milligen, City Manager
SUBJECT: Grand River Center Floor Slab Lifting & Leveling Project
Acceptance of Public Improvement Construction Contract
Project No. 3346000014
DATE: August 27, 2025
Dubuque
AI WIN av
2007-2012.2013
2017*2019
City Engineer Marie Ware is recommending City Council adopt the attached resolution
accepting the improvements and authorize the final payment of the contract amount of
$73,286.20 to Keller North America, Inc., for the Grand River Center Floor Slab Lifting &
Leveling Project.
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
Robert Schiesl, Assistant City Engineer
Stephen Fehsal, Interim Parks and Recreation Director
Marie Ware, Acting Project and Facilities Manager
Page 74 of 629
THE C
DUUB*TE
Masterpiece on the Mississippi
TO: Michael C. Van Milligen, City Manager
Gus Psihoyos, City Engineer
FROM: Robert Schiesl, Assistant City Engineer
SUBJECT: Grand River Center Floor Slab Lifting & Leveling Project
Acceptance of Public Improvement Construction Contract
Project No. 3346000014
DATE: August 26, 2025
INTRODUCTION
Dubuque
All -America City
2007-2012.2013
2017*2019
The attached resolution for the acceptance of the public improvement construction
contract for the Grand River Center Floor Slab Lifting & Leveling Project.
BACKGROUND
In 2013, the City completed a comprehensive Settlement Remediation Project at the
Grand River Convention Center. Since that time, staff would regularly observe and
monitor the interior walls and main floor areas for any signs of floor slab movement or
settlement. In January 2025, City staff completed a floor elevation survey of the interior
main floor areas of the entrance lobby, pre -function space, restrooms, administrative
offices, and the water / sprinkler mechanical room. The survey results indicated there was
a variance of/4" to 3/4" of settlement at various location on the main floor, with much of the
noted settlement in the general vicinity of the escalator.
As a proactive preventive maintenance program, the City recently completed a Floor Slab
Lifting & Leveling Project at the Grand River Center which utilized a 2-part expanding
polyurethane foam which was injected beneath the interior concrete floor slabs to fill any
potential minor voids, while lifting and re -leveling the floor slab. Approximately 5,800
pounds of high -density polyurethane foam grout was used to raise and re -level the
interior main floor areas of the entrance lobby, pre -function space, restrooms,
administrative offices, and the water / sprinkler mechanical room.
DISCUSSION
The Grand River Center Floor Slab Lifting & Leveling Project was completed by Keller
North America, Inc. of Commerce City, CO in the final contract amount of $73,286.20.
This is a 25.4% increase over the original contract amount of $58,420.00. The increase
was due to additional working days needed to complete the work. The original cost
proposal included an estimated 4 working day shifts at $5,755 per day, however the
actual number of working shifts used was 7 days.
Page 75 of 629
RECOMMENDATION
I recommend that the City Council accept the improvements and authorize the payment
of the final contract amount of $73,286.20 to Keller North America, Inc. for the Grand
River Center Floor Slab Lifting & Leveling Project.
BUDGETIMPACT
The summary of project costs for the Grand River Center Floor Slab Lifting & Leveling
Project is as follows:
Description
Award
Final
Construction Contract
$ 58,420.00
$ 73,286.20
The project funding is summarized below:
Project No.
Fund Description
Fund Amount
3346000014
GRC Public Restroom Remodels
$ 73,286.20
Total Project Funding
$ 73,286.20
REQUESTED ACTION
The City Council is requested to adopt the attached resolution accepting the
improvements and authorize the final payment of the contract amount of $73,286.20 to
Keller North America, Inc., for the Grand River Center Floor Slab Lifting & Leveling
Project.
cc: Marie Ware, Leisure Services Manager
2
Page 76 of 629
Prepared by: Bob Schiesl. City of Dubuque Engineering, 50 W. 13`h Street Dubuque IA 52001 (563)589-4270
Return to: Adrienne N. Breitfelder, City Clerk, 50W 131h Street, Dubuque, IA 52001 (563)589-4100
RESOLUTION NO. 281-25
ACCEPTING THE GRAND RIVER CENTER FLOOR SLAB LIFTING & LEVELING
PROJECT
WHEREAS, the public improvement contract for the Grand River Center Floor Slab
Lifting & Leveling Project (the Project) has been completed by the Contractor, Keller North
America, Inc. of Commerce City, CO, (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 $73,286.20; and
WHEREAS, the Contractor has previously been paid $69,621.89, leaving a
balance of $3,664.31; 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 Finance Director is hereby directed to pay to the Contractor the
balance of the retainage of $1,496.26 as provided in Iowa Code chapter 573, and to pay
such retainage in accordance with the provisions of Iowa Code chapter 573 or Iowa Code
chapter 26.13.
Passed, approved and adopted this 2nd day of September 2025.
Attest:
Adrienne N. Breitfelder, City Clerk
CITY ENGINEER'S CERTIFICATE OF FINAL COMPLETION OF GRAND RIVER
CENTER FLOOR SLAB LIFTING & LEVELING PROJECT
The undersigned City Engineer of the City of Dubuque, Iowa, hereby certifies that
he has inspected the Grand River Center Floor Slab Lifting & Leveling Project has been
performed in compliance with the terms of the Public Improvement Contract, and that the
total cost of the completed work is $73,286.20.
Dated this 26th day of August 2025.
Filed in the office of the City Clerk on the
--(� D -
Gus Psihoyos, City Engineer
26th day of August 2025.
Adrienne N. Breitfelder, City Clerk
Page 78 of 629
City of Dubuque - Engineering Department
City Council - Final Payment Form
PAYMENT NO: COUNCIL FINAL
PROJECT NAME: 2025 GRAND RIVER CENTER SLAB JACKING PROJECT
CONTRACTOR: Keller North America, Inc.
AWARDED CONTRACT AMOUNT: $
ADDRESS: 5775 Eudora Street RECONCILIATION AMOUNT: $ 14,866.20 DATE: September 2, 2025
CITY, STATE, ZIP: Commerce City, CO 80022 CONTRACT AMOUNT EARNED TO DATE: $ 73,286.20 25.4
LINE ITEM NUMBER BID ITEM DESCRIPTION CONTRACT TOTAL TO -DATE CURRENT PAY PERIOD FINAL
NO. QUANTITY UNIT UNIT COST QUANTITY AMOUNT QUANTITY AMOUNT QUANTITY AMOUNT
Mobilization / Demobilization / Prep
58,420.00
1.0 LS $ 9,350.00 1.00 $ 9,350.00 $
Polyurethane Grouting Shift 4.0 EA $ 5,755.00 7.00 $ 40,285.00
Polyurethane Grouting Materials 6,363.00 LBS $ 4.00 5,762.80 $ 23,051.20
Performance & Payment Bond 1.0 LS $ 600.00 1.00 $ 600.00
Sub Total: $ 73,286.20
FINAL PROJECT COST SUMMARY
CERTIFICATE OF THE CITY MANAGER
I hereby certify that the above statement shows in detail the correct
amount of all work required to complete the above
improvement.
APPROVED:
Michael Van Milligen, City Manager
City of Dubuque, Iowa
THE CITY OF
DUB E
Masterpiece on the Mississippi
FINAL COST ACCEPTANCE
1.00 $ 9,350.00
$
7.00
$ 40,285.00
$
5762.80
$ 23,051.20
$
1.00
$ 600.00
Sub Total: $
Sub Total:
$ 73,286.20
BASE BID AMOUNT EARNED:
$ 73,286.20
FINAL TOTAL CONTRACT AMOUNT EARNED:
$ 73,286.20
AWARDED CONTRACT AMOUNT:
$ 58,420.00
BID ITEM(S) OVER / UNDER RECONCILIATION:
$ 14,866.20
TOTAL CONTRACT CHANGE ORDER(S):
$ -
FINAL CONTRACT AMOUNT / TOTAL DUE CONTRACTOR:
$ 73,286.20
ENGINEERING DESIGN SERVICES:
$
ADMIN / CONSTRUCTION ENGINEERING & INSPECTION:
$
TOTAL PUBLIC IMPROVEMENT CONSTRUCTION COST:
$ 73,286,20
CERTIFICATE OF THE CITY ENGINEER
I hereby certify that the above statement shows in detail
the correct
amount of all work required to complete the above improvement.
APPROVED:
Gus Psihoyos, City Engineer
City of Dubuque, Iowa
CERTIFICATE OF THE CONTRACTOR
The undersigned, Keller North America, Inc. , the contractor for the above public improvement, does hereby accept the above 'Total Due Contractor",
as full settlement for all costs and claims for said puplic improvement construction project.
CONTRACTOR: Keller North America, Inc. DATE: 8/25/2025
BY: Nicholas Aro � -4z TITLE: Project Manager