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Cyphers Logistic Park AUAR 31 March 2022 b. Describe effects from project activities on water resources and measures to minimize or mitigate the effects below. iii. Wastewater - For each of the following, describe the sources, quantities, and composition of all sanitary, municipal/domestic, and industrial wastewaters projected or treated at the site. AUAR Guidance: Observe the following points of guidance in an AUAR: • Only domestic wastewater should be considered in an AUAR —industrial wastewater would be coming from industrial uses that are excluded from review through an AUAR process • Wastewater flows should be estimated by land use subareas of the AUAR area; the basis of flow estimates should be explained • The major sewer system features should be shown on a map and the expected flows should be identified • If not explained under Item 6, the expected staging of the sewer system construction should be described • The relationship of the sewer system extension to the RGU’s comprehensive sewer plan and (for metro area AUARs) to Metropolitan Council regional systems plans, including MUSA expansions, should be discussed. For non-metro area AUARs, the AUAR must discuss the capacity of the RGU’s wastewater treatment system compared to the flows from the AUAR area; any necessary improvements should be described. • If on-site systems will serve part of the AUAR, the guidance in the February 2000 edition of the EAW Guidelines on page 16 regarding item 18b under Residential development should be followed. 1) If the wastewater discharge is to a publicly owned treatment facility, identify any pretreatment measures and the ability of the facility to handle the added water and waste loadings, including any effects on, or required expansion of, municipal wastewater infrastructure. In August 2021 , the City of Lake Elmo entered into a Cooperative Agreement with the City of Oakdale to hook up and serve the AUAR s tudy a rea with regional sanitary sewer system through Oakdale. The Cooperative Agreement identifies and establishes the quantity of wastewater flows anticipa ted for full development of the AUAR study area, and the City of Lake Elmo has agreed to contribute to the construction and upgrade of Oakdale’s Lift Station 6 proportionate to the development anticipated. The implementation of the Cooperative Agreement was approved in the Oakdale Sewer Service Agreement approved by the Lake Elmo City Council in September 2021. Ultimately the sanitary sewer main is connected to the Metropolitan Council Environmental Services system through a 10 -inch gravity sewer main extending across the City of Oakdale and connecting to the MCES 15 -in 1 -WO -500 interceptor sewer trunk line. The 1-WO-500 interceptor main discharges to the Metro Wastewater Treatment Plant in St. Paul.