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Exhibit A-1 <br /> AECOM 312 938 0300 tel <br /> 303 East Wacker Drive 312 373 6800 fax <br /> Suite 1400 <br /> Chicago,IL 60601 <br /> www'aecom.com <br /> January 25, 2021 <br /> Paul Caswell, PE <br /> City Engineer <br /> City of Decatur Public Works Department <br /> #1 Gary K Anderson Plaza-3rd Floor <br /> Decatur, Illinois 62523 <br /> Regarding: Ellen and Division—Inflow and Infiltration(I&I) Program—Phase 2 <br /> Scope of Work <br /> Dear Mr. Caswell: <br /> AECOM Technical Services, Inc. (AECOM)is providing this scope of work(Scope)for the above- <br /> referenced project.This Scope encompasses AECOM's engineering services for the subject project. <br /> Note that a detailed breakdown of task costs and a schedule is included in this Scope. <br /> Background <br /> The City is currently under Administrative Consent Order(ACO) by the United States Environmental <br /> Protection Agency (USEPA). The ACO requires a reduction in basement backups within the City's <br /> combined and sanitary sewer system, as well as the elimination of all unauthorized Combined Sewer <br /> Overflows(CSOs)and Sanitary Sewer Overflows(SSOs). <br /> In order to demonstrate compliance with the ACO, the City was required to submit a Sewer Collection <br /> System Alternatives Analysis (SCSAA). In partnership with AECOM, the SCSAA (and subsequent <br /> revisions)were submitted on April 12, 2016, November 4,2016,and November 30, 2017. <br /> As a part of this work, it became clear that reoccurring SSOs in the Ellen and Division area (see <br /> Attachment 1) could not be eliminated through regular maintenance. Therefore, an additional study <br /> was needed to eliminate these SSOs, either by reducing 1/1 or removing hydraulic deficiencies (or <br /> both).A draft of this study was completed and submitted to the City on December 21,2018. <br /> At this time, the City is moving into the next phase of the project, which will be preliminary design, <br /> final design, and bidding of an 1/1 reduction project. <br /> SCOPE OF WORK <br /> Our scope of work will be as follows: <br /> Task 1: SITE VISIT AND KICK-OFF MEETING <br /> The first order of work on this project will be to schedule and conduct a kick-off meeting with the City <br /> of Decatur, as well as to perform a site visit with City staff. The purpose of the meeting is to: <br /> • Establish lines of communication <br /> • Discuss and confirm overall project approach <br /> • Review scope and identify any potential problems <br /> • Review results and recommendations of AECOM's previously performed Sanitary Sewer <br /> Evaluation Survey (SSES), which is summarized in AECOM's 2018 "Ellen and Division — <br /> Sanitary Sewer Alternatives Analysis(Draft)" <br /> 1 <br />