R2018-13 Professional Services Agreement AECOM for Ellen and Division Inflow and Infiltration Reduction

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The table below provides the project status of each area. The Consent Order currently requires that all studies, designs, and construction work be completed by December 31, 2020. Project Name Proposed Start Proposed Completion Date Date 1 North Lost Bridge Area Preliminary Study Complete Complete 2 Florian Ave Area Preliminary Study Complete Complete 3 Basin 5/6 Preliminary Study Complete Complete 4 Ellen and Division Preliminary Study February 2018 November 2018 5 North Lost Bridge Area Final Desi n** March 2018 December 2018 6 Florian Ave Area Final Desi n** March 2018 December 2018 7 Basin 5/6 Final Desi n** March 2018 March 2019 8 Ellen and Division Final Desi n** February 2019 November 2019 9 North Lost Bridge Area Construction January 2019 December 2020 10 Florian Ave Area Construction January 2019 December 2020 11 Basin 5/6 Construction June 2019 December 2020 12 Ellen and Division Construction November 2019 December 2020 **Proposed start date pending US EPA approval of the Preliminary Study and the revised SCSAA. A separate professional service agreement will come before Council for consideration once the City receives US EPA approval. Professional Services Agreement: Ellen and Division Inflow and Infiltration Reduction Project City Staff proposes that AECOM be retained to complete the preliminary inflow/infiltration study for the Ellen/Division drainage area. AECOM was initially retained by the City in 2015 to assist the City in its negotiations and response to the US EPA following a competitive proposal process. Throughout this process,AECOM has completed preliminary reviews of the subject drainage basin and is best positioned to provide a review of the area in keeping with the requirements of the US EPA consent order. The Ellen and Division Basin is required to be added to the ACO due to recent sanitary sewer overflows during wet weather that cannot be fixed by operation and maintenance. The limits of the basin are as shown in Exhibit C,the basin includes approximately 22,700 feet of sewer and 67 manholes serving 500 parcels. The professional services provided by AECOM will develop and evaluate the alternatives to eliminate excessive inflow and infiltration in the basin causing wet weather overflows and property backups. The project will address where the excess water is coming from,how much is coming in, and estimate costs to remove or store. The inflow/infiltration to be completed by AECOM will follow the following basic parameters: 1. System Review—Consultant will review existing system. 2. Public Meeting—Consultant will provide public meetings to engage the public to assist the City in identifying local problems and to provide input on proposed solutions.