R2022-30 Resolution Authorizing a Professional Engineering Services Agreement with AECOM Technical Services, Inc. to Provide Construction Services for the Ellen and Division Inflow and Infiltration Reduction Program, City Project 2018-01

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AECOMAECOM 312 938 0300 tel 303 East Wacker Drive 312 373 6800 fax Suite 1400 Chicago,IL 60601 www.aecom.com February 9, 2022 Paul Caswell, PE DRAFT City Engineer City of Decatur Public Works Department #1 Gary K Anderson Plaza -3rd Floor Decatur, Illinois 62523 Regarding: Ellen and Division—Inflow and Infiltration (ISd) Program—Phase 3 Construction Administrative Engineering Services Scope of Work Dear Mr. Caswell: AECOM Technical Services, Inc. (AECOM) is providing this scope of work(Scope)for the above- referenced project. This Scope encompasses AECOM's engineering services for the subject project. Note that a detailed breakdown of task costs and a schedule is included in this Scope. Background The City is currently under Administrative Consent Order (ACO) by the United States Environmental Protection Agency (USEPA). The ACO requires a reduction in basement backups within the City's combined and sanitary sewer system, as well as the elimination of all unauthorized Combined Sewer Overflows (CSOs)and Sanitary Sewer Overflows (SSOs). In order to demonstrate compliance with the ACO, the City was required to submit a Sewer Collection System Alternatives Analysis (SCSAA). In partnership with AECOM, the SCSAA (and subsequent revisions)were submitted on April 12,2016, November 4,2016,and November 30,2017.An additional study was completed and submitted to the City on December 21, 2018. Final design has also been completed with bidding of the project to be completed on February 9, 2022. The City of Decatur has requested AECOM to provide a proposal for Construction Engineering and Administration services. SCOPE OF WORK Our scope of work listed below is structured to accommodate a construction schedule that will begin in late February 2022 and be completed not later than October 1,2023. Given that both AECOM and City staff will be involved in both construction engineering and administration, we have documented within this proposal our detailed assumptions and divisions of duty regarding AECOM's role. It is also assumed that AECOM will be more involved in the earlier stages of the project, and as the project progresses, City staff will be able to address and administer the majority of the project with a reduced need for AECOM's assistance. Given that the detailed Contractor's schedule is not known at this time, much of this scope of work is estimated based on our previous construction engineering experience and may need to be reduced or increased as the Contractor's work progresses. 1