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Acceptance of Catfish Creek Stream Bank Stabilization Project Copyrighted May 20, 2019 City of Dubuque Consent Items # 21. ITEM TITLE: Acceptance of Catfish Creek Stream Bank Stabilization Project SUMMARY: City Manager recommending acceptance of the public improvement construction contract for the South Fork of the Catfish Creek Sanitary I nterceptor Sewer Stream Bank Emergency Repair Project, as completed by Legacy Corporation. RESOLUTION Accepting the Catfish Creek Sanitary I nterceptor Sewer- Stream Bank Emergency Repair Project and Authorizing the final payment to the contractor SUGGESTED DISPOSITION: Suggested Disposition: Receiveand File;Adopt Resolution(s) ATTACHMENTS: Description Type Stream Bank Emergency Repair Project-MVM Memo City Manager Memo Staff Memo Staff Memo Resolution Resolutions Engineer's Cert Supporting Documentation Photos Supporting Documentation THE CITY OF Dubuque � AIFA�erlwGh UB E '�� III► Masterpiece on the Mississippi Z°°'�w'2 7A13 2017 TO: The Honorable Mayor and City Council Members FROM: Michael C. Van Milligen, City Manager SUBJECT: South Fork of the Catfish Creek Sanitary Interceptor Sewer Stream Bank Emergency Repair Project Accept Public Improvement Contract DATE: May 14, 2019 City Engineer Gus Psihoyos is recommending acceptance of the public improvement construction contract for the South Fork of the Catfish Creek Sanitary Interceptor Sewer Stream Bank Emergency Repair Project, as completed by Legacy Corporation, in the final contract amount of$80,774.17, which is a 19.6°k decrease from the original contract amount of$100,485.00. I concur with the recommendation and respectfully request Mayor and City Council approval. �� Mic ael C. Van Milligen �� MCVM:jh Attachment cc: Crenna Brumwell, City Attorney Teri Goodmann, Assistant City Manager Cori Burbach, Assistant City Manager Gus Psihoyos, City Engineer THE CITY OF Dubuque � 1N•Ileer�Ciry DUB E �,�F " . ;� �:, II Masterpiece on the Mississippi 2°°'�2°'Z 2013•2017 TO: Michael C. Van Milligen, City Ma�a t`jr �' �� FROM: Gus Psihoyos, City Engineer .,.,��.,, ��-.,_.._-_�;=:'� SUBJECT: South Fork of the Catfish Creek Sanitary Interceptor Sewer Stream Bank Emergency Repair Project Accept Public Improvement Contract DATE: May 14, 2019 INTRODUCTION The enclosed resolution provides for the acceptance of the public improvement construction contract for the emergency stream bank repairs to a segment of the South Fork of the Catfish Creek which was in close proximity to the existing South Fork of the Catfish Creek sanitary interceptor sewer. BACKGROUND The City was working on a project to repair and stabilize a segment of the stream bank along the South Fork of the Catfish Creek, located just upstream of the North Cascade bridge crossing. The segment of stream bank is approximately 300 feet in length and had experienced significant erosion and stream embankment loss over the past several years. The City has an existing 18-inch sanitary interceptor sewer that runs along the South Fork of the Catfish Creek. Stream bank erosion had gradually been encroaching towards the alignment of the sanitary interceptor sewer. In January 2019, the Engineering Department took drone aerial photos of the stream bank erosion location to assist with the development of repair and stabilization plans. In reviewing the aerial photos, the erosion and stream embankment loss had increased significantly and was now extremely close to the existing sanitary interceptor sewer. Due to the recent observed stream bank encroachment on the existing South Fork of the Catfish Creek near the City's sanitary interceptor sewer, emergency repairs were required to repair and stabilize this segment of the stream bank to prevent impacts to the sanitary interceptor sewer. On February 4, 2019, based on City staff recommendation, the City Council authorized per Resolution 40-19 that an emergency repair project be initiated pursuant to State of lowa Code, 384.103 Emergency Repairs, so that the necessary stream bank repair and stabilization could be made to protect the existing sanitary interceptor sewer. DISCUSSION The Catfish Creek Sanitary Interceptor Sewer - Stream Bank Emergency Repair Project was completed by Legacy Corporation of East Moline, IL, in the final contract amount of $80,774.17, which is a 19.6% decrease from the original contract amount of $100,485.00. Wher th� project was initially bid, it vvas anticipated that there would be sufFicient suitable fill material onsite that could be used to restore and stabilization the stream bank. However, upon starting the repair project, fhe onsite soiis were not suitable and thus the City was required to purchase embankment fill material from the nearby River City quarry at a cost of $9,255.24. The material purchase was a direct cost to the City and was not included in the contractor's contract. RECOMMENDATION I recommend that the City Council accept the public improvements and authorize the payment of the contract amount of $80,774.17 to Legacy Corporation of East Moline, IL, for the Catfish Creek Sanitary Interceptor Sewer - Stream Bank Emergency Repair Project. BUDGET IMPACT The summary of project costs for the Catfish Creek Sanitary Interceptor Sewer - Stream Bank Emergency Repair Project, is as follows: Description Estimate Award Final Cost Construction $130,245.00 $100,485.00 $ 80,774.17 Purchase Embankment Fill Material 9,255.24 Contingency 10,000.00 10,000.00 Engineering Design 3,060.00 3,060.00 3,240.00 Construction Administration & Inspection 5,000.00 5,000.00 2,231.69 Total Construction Cost $148,305.00 $118,545.00 $ 95,501.10 The funding for the Catfish Creek Sanitary Interceptor Sewer - Stream Bank Emergency Repair Project will be as follows: CIP Funding Source Amount 710 2812 Catfish Creek Stream Bank Repair- Steger Tjarks $ 95,501.10 Total Project Funding $ 95,501.10 ACTION TO BE TAKEN The City Council is requested to adopt the attached resolution to accept the public improvements and to authorize the final payment of the contract amount of $80,774.17 to Legacy Corporation of East Moline, IL, for the Catfish Creek Sanitary Interceptor Sewer- Stream Bank Emergency Repair Project. Prepared by Robert Schiesl, Assistant City Engineer cc: Jenny Larson, Budget Director Deron Muehring, Civil Engineer F:\PROJECTS\Catfish Creek-Steger Tjarks Stream Bank Repair 2019Wcceptance i RESOLUTION NO. 181-19 ACCEPTING THE CATFISH CREEK SANITARY INTERCEPTOR SEWER - STREAM BANK EMERGENCY REPAIR PROJECT AND AUTHORIZING THE FINAL PAYMENT TO THE CONTRACTOR WHEREAS, the public improvement contract for the Catfish Creek Sanitary Interceptor Sewer - Stream Bank Emergency Repair Project (the Project) has been completed by the Contractor, Legacy Corporation of East Moline, IL (Contractor), and the City Engineer has examined the work and signed a certificate stating that the Project has been completed according to the terms of the Public Improvement Contract and that the City Engineer recommends that the Project be accepted; and WHEREAS, the final contract amount for the Project is $80,774.17; WHEREAS, the Contractor has previously been paid $76,735.46, leaving a balance of $4,038.71; 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 THAT: 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 from the Catfish Creek Stream Bank Repair - Steger Tjarks CIP appropriations for the contract amount of $80,774.17 less any retained percentage provided for therein as provided in Iowa Code. Section 2. The Finance Director is hereby directed to pay to the Contractor the balance of the retainage of $4,038.71 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 20th day of May 2019. Attest: vin S. Firnstail, C iIC City Clerk Q41 oy D. Buol, Mayor F:\PROJECTS\Catfish Creek - Steger Tjarks Stream Bank Repair 2019\Council and Staff Documents\Acceptance CITY ENGINEER'S CERTIFICATE OF FINAL COMPLETION OF TIiE CATFISH CREEK SANITARY INTERCEPTOR SEWER - STREAM BANK EMERGENCY REPAIR PROJECT ThP undersigned City Engineer of the Cifiy of Dubuque, lowa, hereby certifies that he h�s inspected the Catfish Cre�k Sanitary IntercPptor Sewer - Stream Bank Emergency Repair Project, and thafi the Project has been cornpleted in compliance with th� terms of the Public Impravement C�ntracfi, and that the fiotal cost of thP completed work is $59,501 .10. Dated this _.14t��'__ day of Ma rL� 2019. �' � � �� / �\ __�----' v . �.,��,�. � Ti Gus Psihoyos, City Engin F Filed in the office c�f the City Clerk on the 14t!'_. day of_ May 2019. � ��. „ f,, �� --_... ,_�__ �. ,,.f evin Firnstahl, C ' C, City Clerk F:\PRC).1FC7S\Catfish Creck -Slec�er�Cjarks Strc�am Bank R�pair 2.019\Council and Str�H Dc�curnents\Acceptr�ncn ''' K' Y � ♦ `�... �'� � � . ' � xi�. �n � i� .. � ; ..� �� ` �J 'y II��, � ' � � � A "IA �` �� \ � � e I " �. �y I ;�. ,� t s ,� :' y, I � � � v�:� 1 � � c ��r � � i `C;� �� .,� i � �� , � � � � } �,.� r�. �. ;�,. �� ^ �' � F ' V4 , ��.rt" F;.i y-_+ _ '!�! , ! S^ •�� '4�� (yP� M}^ •�'.'� ' . . .. ,. . _ . aV. '�.. . , 4 � .. �� z - ��'�� ,- � � BEFORE� CONDITIOti - r 4� � > '� � ° = �r �.�-i>`,.,� �� . ��. :- � _ �{r k � G�aj�K � . � ��. n �� 4�kd*�l � . � ��,�„�r^°" ' � � ,_+ _ . �` S p , ' � � �. �i� �*�:.� L t� ,`.4 ,, � �� ' ..'P.,Y„�i .`,� � n , i .> , '��.'� r .. �i�� _ ,