Professional Services Agreement - Arcadis US Inc - Secondary Treatment and Disinfection Improvements at WWTP

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INTER -OFFICE MEMORANDUM DEPARTMENT OF PUBLIC WORKS DIVISION OF UTILITIES TO: Members of the Board of Public Works Eric Horvath, Director of Public Works Clara McDaniels, Board of Public Works Attorney Kara Boyles, City Engineer Linda Martin, Clerk of Board of Public Works FROM: Al Greek, Director of Utilities Jacob M. Klosinski, Assistant City Engineer SUBJECT: Agenda Request Form — Professional Services Agreement Wastewater Treatment Plant Secondary and Disinfection Improvements DATE: July 15, 2019 IJOUpA"�NMdINd'.PS 911 1�llN..NNX . W✓WI'�A dld.NlN' IA VYIVA'F!f Y/AIY,9IVMAMIXIX �fi:I ¢1 MW'Mll✓i lBWYL�dW A.If)ttHr�YYi,�,v INON�.!f�IWhrgOtl'.IDlp/N Jd+wxMDIDNiIb I"OJIm'M.. (vi[A )FkM lSllYICJ GIF�9'�YW Y 1mNlk The Division of Engineering and Division of Utilities are requesting the Board of Public Works' approval of a Professional Services Agreement with Arcadis U.S., Inc. to provide professional engineering design services and construction administration services associated with Secondary Treatment and Disinfection Improvements at the Wastewater Treatment Plant. Background The City of South Bend Long Term Control Plan and Consent Decree (May 2012) requires the Wastewater Treatment Plant provide Secondary Treatment for 100 MGD peak flow rates. As part of this effort to upgrade the facility, Secondary Clarifiers, Aeration Basins, and Disinfection facilities require upgrades to improve the hydraulics and return activated sludge return rates to optimize treatment capacity. The engineering scope for the WWTP Secondary and Disinfection Improvement project will address the following major improvements: • Final Clarifiers 1-5: Replace sludge mechanism, drive motors, access walkways, isolated structural improvements, rehabilitate weirs, and replace handrails. • Aeration Basins 1-4: Replace Pass 1-2 Influent Gates and the drain gates at Aeration Tank 4. • Aeration Basins 1-4: Extend the length of the Aeration Basin effluent weirs. • Disinfection Building and Chlorine Contact Tanks: Increase capacity of chlorine and sulfur dioxide gas systems by adding evaporators, scrubbing equipment, and improvements to distribution piping. Please refer to Professional Service Agreement and attachments for full scope of services. The funding source for the project is Utilities, Wastewater, Engineering Account (641-0630-793-31- 02) and Utilities, Wastewater Engineering Capital Account (642-0630-415-43-66). If there are any questions regarding the subject project, please contact Al Greek (Ext. 4210) at the Division of Utilities or Jacob M. Klosinski (Ext. 9496) at the Division of Engineering.