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

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3. Closed Circuit Television(CCTV)Review—Review CCTV for defects and I&I 4. Manhole (MH) Inspection and Review—Provide MH inspections for defects and I&I. 5. Flow Monitoring—Flow monitor sewers to quantify system flow. 6. System Modeling—Build, calibrate and verify a computer sewer model. 7. Smoke Testing—Provide smoke testing to find sewer defects in need of repair. 8. Dye Flooding—Provide dye flooding to find cross connections and I&I. Dye flooding consists of surcharging storm sewer/ditches with dye colored water and investigating the sewer for dye infiltration points. 9. Private Property Inspection—Inspect private properties for drain, gutter, foundation drain, or sump pumps connected to the sanitary sewer. Inspection will require authorization from the homeowner to enter property. If authorization is not granted by the property owner the City will not be able to complete the inspection and an alternate approach will be needed. The project's report will be sent to the US EPA for approval and will be the basis for a final design. The cost for the Ellen and Division Basin Inflow and Infiltration Project is not to exceed $356,767. After completion of the report and approval by US EPA, a separate professional service agreement for final design will be brought to the City Council for approval. Change Order No. 1: 2017 Target Area Flow Monitoring The City entered into an Agreement for$462,944.28 with ADS Environmental Services in February of 2017 for flow monitoring of 8 areas within the sanitary sewer collection system. The flow monitoring is crucial in identifying areas of high rain induced flow within the sewers. It is also used to calibrate and verify computer models of the system. Change Order No. 1 to the Agreement with ADS is for additional $88,674 to address the additional flow monitoring required by the US EPA in the Ellen/Division Area and the additional flow monitoring required in Basin 5/6 (Grand/Rt.48). A change order is the best option to enable flow meters to be installed by March in order to catch the spring rains. Upon approval by the Council,the flow meters are scheduled to be installed in March and be completed in August if favorable rainfall is received. SCHEDULE: The City has currently negotiated with the US EPA to complete all of the engineering and construction required by the Administrative Consent Order by December 31, 2020. POTENTIAL OBJECTION: None INPUT FROM OTHER SOURCES: United States Environmental Protection Agency, AECOM, ADS Environmental Services and the Legal Department. STAFF REFERENCE: Matt Newell, Interim Public Works Director; Matt Newell will be in attendance at the City Council meeting to answer any questions of the Council on this item. LEGAL REVIEW: The proposed Agreement and Change Order was approved by the Legal Department on Monday, January 29, 2018.