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Maus Park Lake Pump Station Culvert Repair Project Acceptance of Public Improvements and Contract Copyrighted May 20, 2024 City of Dubuque Consent Items # 011. City Council Meeting ITEM TITLE: Maus Park Lake Pump Station Culvert Repair ProjectAcceptance of Public Improvements and Contract- Project Number: 558650003 SUM MARY: City Manager recommending City Council adopt the resolution accepting the Public I mprovements and authorize payment of$527,942.00 to Tschiggfrie Excavating for the Maus Park Lake Pump Station Culvert Repair Project. RESOLUTION Accepting the Maus Park Lake Pump Station Culvert Repair Project and authorizing final payment to the contractor SUGGESTED Suggested Disposition: Receive and File;Adopt Resolution(s) DISPOSITION: ATTACHMENTS: Description Type MVM Memo City Manager Memo Staff Memo Staff Memo Resolution Resolutions Engineer's Certificate of Completion Supporting Documentation Dubuque THE CITY QF � All-Meriea Ciry DLT B E ; . � . � �� MaSt� Z�C� aYd t�Q Mt55ZSSZ Z zoa�•zoiz•�ai3 YP pp za��*zai� TO: The Honorable Mayor and City Council Members FROM: Michael C. Van Milligen, City Manager SUBJECT: Maus Park Lake Pump Station Culvert Repair Project Acceptance of Public Improvements and Contract Project Number: 558650003 DATE: May 14, 2024 City Engineer Gus Psihoyos is recommending City Council adopt the resolution accepting the Public Improvements and authorize payment of$527,942.00 to Tschiggfrie Excavating for the Maus Park Lake Pump Station Culvert Repair 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 Dubuque THE CITY OF � pll•America Ci� DuB E �.�K,��K�, . � � �� Maste iece oYl the MisSisSi i zoo��zoiz�zoi3 �`P pp zoi�*zatg TO: Michael C. Van Milligen, City Manager FROM: Gus Psihoyos, City Engineer SUBJECT: Maus Park Lake Pump Station Culvert Repair Project Acceptance of Public Improvements and Contract Project Number: 558650003 DATE: May 10, 2024 INTRODUCTION The enclosed resolution provides for the acceptance of the Public Improvement Construction Contract for the Maus Park Lake Pump Station Culvert Repair Project. BACKGROUND Prior to the construction of the floodwall, a concrete arch culvert served to drain Maus Lake beneath what are now Canadian National (CN) mainline railroad tracks to the Mississippi River. When the floodwall was constructed, the existing arch culvert was retrofitted with sections of 48-inch reinforced concrete pipe at the upstream and downstream ends to extend the pipe. The flow line of the arch culvert was filled with concrete and formed to the radius of a 48-inch pipe. A manually operated flood gate was installed at the downstream end, and a pumping station was constructed at Maus Lake. In May 2017, ballast subsidence under the railroad tracks was discovered at the location of the culvert crossing. Further investigation revealed joint openings in the concrete arch below the tracks. The joint openings were filled with epoxy and steel plates were installed along the roof of the pipe as a temporary repair measure until a permanent solution could be developed. The Maus Park Lake Pump Station Culvert Repair Project (Project) involved the lining of the culvert that allows stormwater runoff to pass from the Maus Lake ponding area, under a set of railroad mainline tracks, through the floodwall/levee system, into the Mississippi. Specifically, the work involved the trenchless installation of approximately 110 lineal feet of a steel slip liner inside the existing culvert resulting in a new culvert under the railroad tracks, partially through the levee. In addition, the work included the construction of a permanent cofferdam and concrete apron, concrete walls, and stop log level control system on the interior side of the floodwall/levee system to facilitate both the lining process and allow for maintenance of the culvert once complete. In October of 2023, the City Council adopted Resolution 324-23, awarding the construction contract for the Maus Park Lake Pump Station Culvert Repair Project to Tschiggfrie Excavating in the amount of$525,172.00. DISCUSSION The Maus Park Lake Pump Station Culvert Repair Project has been completed by Tschiggfrie Excavating of Dubuque, lowa, in the amount of$527,942.00 which is a 0.53% increase over the original contract amount of $525,172.00 at the time of award. .i RECOMMENDATION I recommend acceptance of the Public Improvements and authorize payment of$527,942.00 to Tschiggfrie Excavating for the Maus Park Lake Pump Station Culvert Repair Project. BUDGET IMPACT The estimate of probable cost for the Maus Park Lake Pump Station Culvert Repair Project is as follows: Description Estimate Award Final Construction Contract $586,000.00 $525,172.00 $527,942.00 Contingency 58,600.00 52,500.00 0.00 Engineering 96,700.00 126,700.00 $142,000.00 Total Project Cost $ 741,300.00 $ 704,372.00 $669,942.00 The current project funding summary is as follows: Project Funding Source Amount Code 5586500032 Maus Park Culvert Restoration $ 463,940.00 5586500001 Storm Sewer Replacements 142,432.00 ��) 5586500020 Storm Sewer Improvements/Extensions 68,000.00 ��) Total Project Funding $ 674,372.00 (1) Funding if needed pending the outcome of insurance claim The Project is to be funded through an FY24 appropriation in the amount of $463,940 for Maus Park Culvert Restoration (Project 5586500032). Because the pump station and culvert were insured, the City submitted a claim (ICP047008A1)to the lowa Communities Assurance Pool (ICAP)for making permanent repairs to the culvert that will offset the City's cost. Pending the outcome of the claim, additional funds if needed will come from an FY24 appropriations for Storm Sewer Replacements (Project 5586500001) and for Storm Sewer Improvements/Extensions (Project 5586500020). ACTION TO BE TAKEN I respectfully request adoption of the attached resolution accepting the Public Improvement Construction Contract and to authorize final payment in the amount of $527,942.00 to Tschiggfrie Excavating for the Maus Park Lake Pump Station Culvert Repair Project. Attach. Prepared by Deron Muehring cc: Crenna Brumwell, City Attorney Jenny Larson, Chief Financial Officer Tony Breitbach, Purchasing and Risk Manager Arielle Swift, Public Works Director Deron Muehring, Water& Resource Recovery Center Director L .--r Prepared by: Deron Muehring, City of Dubuque Engineering, 50 W. 1Th Street Dubuque, IA 52001 583 589.4270 Return to: Adrienne N. Sreitfelder, City Clerk, 50W 131h Street, Dubuque, IA 52001 (563)589-4100 RESOLUTION NO. 133-24 ACCEPTING THE MAUS PARK LAKE PUMP STATION CULVERT REPAIR PROJECT AND AUTHORIZING FINAL PAYMENT TO THE CONTRACTOR Whereas, the Public Improvement Contract for the Maus Park Lake Pump Station Culvert Repair Project (the Project) has been completed by Tschiggfrie Excavating (the Contractor), and the City Engineer has examined the work and that the Project be accepted; and Whereas, the final contract amount for the Project is $527,942.00; and Whereas, the Contractor has previously been paid $501,544.90, leaving a balance of $26,397.10; 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 to the Contractor the balance of the retainage of $26,397.10 as provided in Iowa Chapter 573, and to pay such retainage only in accordance with the provisions of Iowa Code Chapter 573 or Iowa Code Chapter 26.13. Passed, approved and adopted this 20th day of May, 20 Attest: Adrienne Breitfelder, CMC, City Clerk Ric W. Jones/Wvor Pro Tern CITY ENGINEER'S CERTIFICATE OF FINAL COMPLETION OF THE MAUS LAKE PUMP STATION CULVERT REPAIR PROJECT The undersigned City Engineer of the City of Dubuque, lowa, hereby certifies that he has inspected the Maus Lake Pump Station Culver Repair 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 $669,942.00. Dated this 13t" day of May 2024. Gus Psihoyos, City Engineer Filed in the office of the City Clerk on the 13t" day of May 2024. ��.�'.r�: ,�,�� i, `�' _� T�. +.�: �_- � Adrienne N. Breitfelder, CMC City Clerk