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Signed Contract_Strand Associates for Cedar/Terminal Streets Force Mains/Lift Stations Task Order No. 19-01 Copyrighted September 16, 2019 City of Dubuque Consent Items # 29. ITEM TITLE: Signed Contract(s) SUM MARY: Strand Associates, I nc. for the Catfish Creek Sanitary I nterceptor Sewer Capacity Analysis Amendment No. 1 to Task Order No. 18-04; and the Cedar/Terminal Streets Force Mains and Lift Stations Assessment and I mprovements Project/ Cedar Street Force Main Air Release Valve Replacements Task Order No. 19-01; East Central Development Corporation LeaseAgreementfor Federal Building space; Larmar Companies Lease Agreement for City property located at 280 South Locust Street. SUGGESTED DISPOSITION: Suggested Disposition: Receive and File ATTACHMENTS: Description Type StrandAssociates, Inc. - Caffish Creek Interceptor Supporting Documentation Amendment 1 StrandAssociates, lnc., - Cedar/TerminalStreets SupportingDocumentation Force Mains and Lift Stations East Central Development Corporation Lease in Supporting Documentation Federal Building Lamar Corporation Lease for City Properly at 1690 Supporting Documentation Elm Street Dubuque THE CITY QF �p,,.. � AEI•if�orl�a City �� v,uuxw.rn�uxxr. ,�� ' zoo�*zoiz�2ois Mas�e�paece on the Mississippi ��7�� TO: Michael C. Van Milligen — City Manager FROM: Steve Sampson Brown — Project Manager �-____- SUBJECT: Cedar and Terminal Street Force Mains and Lift Stations Assessment and Improvements Project— Cedar Street Force Main Air Release Valve Replacements Task Order No. 19-01 CIP 710-2606 DATE: September 3, 2019 INTRODUCTION The purpose of this memorandum is to request execution of the attached contract amendment that will provide for the creation of construction bid documents to replace air vacuum release valves on the Cedar Street force main at 3�a 4t", and 14t" Streets by �Strand Associates, Inc. (Strand). BACKGROUND The City's Terminal Street and Cedar Street force main system is comprised of two lift stations and pressurized sanitary sewer pipes known as force mains. Each component in the lift stations and force main pipe network requires periodic evaluation and improvements to preserve their reliability in being able to convey the City's wastewater to the W&RRC. Approximately 80% of all wastewater that flows to the W&RRC for treatment arrives via the Terminal Street and Cedar Street force main system. In September 2015 the City Council authorized the issuance of a Request for Proposal with a scope of work that included a full system inspection, needs assessment report, an emergency response plan for system failure, and design of rehabilitation and repair work that was identified as part of the needs assessment. Replacement of the air release valves falls within the scope of work outlined in the 2015 RFP. Air release valves as part of a force main system serve to eliminate pockets of air and hydrogen sulfide gas. Concentrated hydrogen sulfide gas in a force main will accelerate internal pipe corrosion and air pockets can lead to water hammer inside the pipe when the force main pumps are shut down and then restarted. Either of these conditions can lead to catastrophic failure of a force main. Page 1 of 2 DISCUSSION Engineers from Strand recently evaluated the air releases at these locations and determined the valves are due for replacement because of their deteriorated condition. The existing valves are also older style manual release valves. Manual air release valves require maintenance staff to travel to the air release location several times per month to manually activate each valve. Current industry standard best practices utilize automatic air release valves that operate when needed to release built up air and hydrogen sulfide gas from the force main. The�attached Task Order 19-01 provides for Strand to analyze existing data related to the 3rd Street, 4t" Street, and 14t" Street valves; conduct a survey of each valve location; design new structures to house the replacement valves; and prepare construction bidding documents for the replacement of the valves. RECOMMEND�4TION Considering the information above, it is recommended that that attached contract amendment with Strand be executed so that the assessment of Cedar Street Force Main Air Release Valve Replacement Project can proceed. BUDGETIMPACT The cost of the Task Order 19-01 services is $53,000. The funding for Task Order 19-01 will be from the Cedar and Terminal Street Force Mains and Lift Stations Assessment and Improvements Project (CIP 710-2606) which has a current available balance of $644,500. REQUESTED ACTION The execution of the attached Task Order 19-01 is requested. SSB1ssb cc: Gus Psihoyos— City Engineer Jenny Larson — Director of Finance & Budget Willie O'�rien —W&RRC Manager Deron Muehring — Civil Engineer Todd Irwin — Engineering Technician Attachments F:IPROJECTS1Sanitary\Cedar-Terminal Lift Stations and FMs Assessmentl_PSA1Cedar Street FM Air Vacuum Release Replacement Task Order 19-011Strand Task Order 19-01 Amend 1 memo to mvm 7.24.19.docx Page 2 of 2 Strand Associates, Inc° 910 West Wingra Drive Madison,WI 53715 (P)608-251-4843 STRAN D ASSOCIATES° Task Order No. 19-01 City of Dubuque,Iowa(OWNER) and Strand Associates,Inc.°(ENGINEER) Pursuaiit to the Agreement for Technical Services dated June 9, 2016 Project Information Project Name: Cedar Street Force Main Air Vacuum Release Valve Replaceinent Project Scope of Services ENGINEER will provide the following services to OWNER: Desi�n Services 1. Review existing OWNER-provided data related to the 3rd Sti�eet, 4t11 Street, and 14th Street air/vacuum celease valve locations. Identify additional data that may be necessary for design in a request for information to Ue subinitted to OWNER. 2. Attend a lcicicoff ineeting with O WNER to review project scope,goals,and schedule.The request for information will also be reviewed at this ineeting. 3. Prepare a surge analysis ofthe 30-inch force main from the Cedar Street Pumping Station to the Terminal Street Pumpiug Station, and the 42-inch force main fr•om the Terminal Street Ptrmping Station to the Water and Resource Recovery Center. Document results of the surge analysis in a brief report. 4. Conduct a topographic suivey of the 3rd Street,4th Street,and 14 Street combination air/vacuum release valve locations and the location near the Cedar Street Pumping Station where a force main assessment tool launching station will be constructed. 5. Design new structures for housing new air, combination air/vacuum release valve, or surge release valves at the 3rd Street, 4th Street, and 14th Street locations. Type of valve will be dependent on results of the surge analysis. Design a new force inain assessment tool launching structure near the Cedar Street Pumping Station. 6. Prepare draft Bidding Documents using Engineers Join Conti•act Documents Committee C-700 Standai•d General Condition oPthe Construction Contract,2013 edition,technical specifications, ai�d eugineering drawings. 7. Meet with OWNER to obtain input and concurrence with the design.Attend two review meetings via conference call at appi�oxiinately 50 and 90 percent drawing coinpletion. 8. Review the draft Bidding DocLunents with OWNER, incorporate review comments, and submit three copies of the final Biddillg Documents to OWNER. 9. Prepare an opinion of probable construction cost based on the final Bidding Documents. ALC:RiL:mro:�;jcUt:Ve1AD�I)ocuments�A�'eements�DU�ubuque,City of([Aj\TSA.20lG\T0�2U19U 154.OS I.19-0Ldocx Arizona I Illinois � Indian� � Kentucky � Ohio � Texas � Wisconsin www.strand.com �trand Associates, Inc° City of Dubuque Taslc Order No. 19-0 l Page 2 June 20,2019 Biddinp�-and Construction-Related Services Speci�c bidding and construction-related services will be determined following completion of Design Services and will be incorporated into the project via an amendment to this Taslc Order. Compensation OWNER shall compensate ENGINEER for Services under this Task Order a lump sum of$53,000. Schedule Services will begin upon execution of this Taslc Order, which is anticipated the weelc of July 8, 2019. Services are scheduled for completion on December 31,2019. TASIC ORDER AUTHORIZATION AND ACCEPTANCE: ENGINEER: OWNER: STRAND ASSOCIATES, INC.'° CITY OF DUBUQUE � Jose M. Bunlcer �at Mi ael C.Van Milligan D te Corporate Secretary City Manager ALC:RJL:mro:�;jc\R:WIAD�DocumentsWgreements�DUJubuque,Ciry of(IA)\TSA1016\T0�019U 154.051.19-Ol.docx www.strand.com