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Attachment A METROPOLITAN COUNCIL ENVIRONMENTAL SERVICES INFLOW AND INFILTRATION DEMONSTRATION PROJECT GRANT REQUEST FOR PROPOSALS Project Summary Clear water from inflow and infiltration (I&I) that enters the sanitary sewer systems has a significant impact on wastewater conveyance, treatment and storage facilities. In 2016, a task force of community officials recommended that MCES complete a demonstration project that provides additional measurement of the impact of I&I mitigation in the local systems. The report and recommendations from the 2016 I&I Task Force are available at www.metrocouncil.orglandi. The demonstration project (Project) should present a strategy that other communities could apply to their own wastewater system and offer a better understanding in implementing their own I&I mitigation plan. Numerous previous flow studies and demonstration projects have been done throughout the country, which indicate that reduction of flows generated from I&I sources is a cost-effective approach to increasing wastewater service reliability and sustainability. This Project should demonstrate the effectiveness of I&I rehabilitation techniques that focus on reduction of I&I from private infrastructure, namely sewer service laterals that connect homes and businesses to the municipal sewer systems and improperly connected sump pumps. Pre -rehabilitation and post -rehabilitation monitoring is an expected component of the Project to quantify and document the achieved flow reduction. Proposals that integrate sub-metershed monitoring to discover and isolate sources of I&I and non-destructive rehabilitation techniques that reduce costs are encouraged. This grant is to support funding of a Project that adds to the current knowledge base of technically effective and cost-effective I&I flow reduction strategies. At least 50 percent of the Project cost must be contributed by the community. A successful proposal will highlight the ability to: • Demonstrate effective techniques for I&I mitigation of private infrastructure • Utilize sub-metershed flow metering — also known as micro -metering —to locate sources of I&I within the proposed project area • Provide measurement of impact of I&I mitigation on base and peak wastewater flows • Detail the cost-effectiveness of the mitigation strategy To support the implementation of a Project that demonstrates a reproducible approach to address inflow and infiltration from private infrastructure, the Metropolitan Council (Council) will implement a grant for and 18d demonstration project with eligible expenses from 2019 to 2021. All projects proposals, including flow monitoring, should be planned for completion by December 2021. A proposed schedule for the Project is given below. MCES will consider projects that extend beyond the proposed schedule final report date, if an explanation of the extended schedule is included. Date Action July 2018 Distribute RFP August 31 2018 Proposals Due to the Council September 2018 Selection by Committee December 2018 Commission Award and Notice to Proceed October 2019 1st Annual Report October 2020 2nd Annual Report October 2021 3rd Annual Report December 2021 Final Report ' 390 Robert Street North I Saint Paul, MN 55101-1805 P. 651.602.1000 TTY. 651.291.0904 1 metmeouncil.org METRJOPOLITAN M I Au 1,,ryImgh,