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SILVER LAKE VILLAGE MULTIFAMILY REDEVELOPMENT EAW RECORD OF DECISION CITY OF ST. ANTHONY VILLAGE, MN WSB PROJECT NO. R-013966-000 PAGE 3 Wastewater: All wastewater collected in the City is conveyed through the MCES regional sewer system to the Metropolitan Wastewater Treatment Plant (WWTP) in St. Paul. The proposed apartment complex will be located in the north service area of the City’s sanitary sewer system, and the flow generated will be metered by MCES meter M055. Wastewater generated in the proposed apartment complex will be conveyed through a series of gravity mains ranging in diameter from 8 to 18 inches to the Foss Road Lift Station, which pumps directly into MCES Interceptor 1-RV-430. Given the Metropolitan WWTP capacity of 251 MGD (174,306 gpm) and the estimated average daily wastewater flow that will be generated in this proposed apartment complex (63 gpm), it is anticipated that the wastewater generated at the apartment complex will not have significant impacts on the plant’s ability to effectively treat wastewater. Additionally, given the nature of the wastewater flow, domestic wastewater, specific pretreatment measures will not be required. Stormwater Treatment: Silver Lake (AUID 62-0083-00) is the only MCPA 303d Impaired water within 1 mile of the project. The stormwater from the site does drain north to this public water. Silver Lake is approximately 0.2 mile north of the site. With the construction of the project, a Stormwater Pollution Prevention Plan will be created and used to prevent erosion and stabilize the site during and after project construction. The SWPPP will include specific erosion control to prevent TP and TSS loading to the impaired Silver Lake. The project will be subject to Rice Creek Watershed District stormwater rules. Building Demolition: The project will include demolition and removal of the existing former Walmart building and associated facilities. Demolition and removal of existing asphalt parking lot, lights, and concrete curb will also occur. For all demolitions, a “Notification of Intent to Perform a Demolition” must be submitted to the MPCA 10 working days prior to the start of demolition. Regulated materials such as asbestos, lead based paint, light ballasts, thermostats, stored chemicals, ozone depleting chemicals, etc. will be managed and disposed of (or recycled) in accordance with State and Federal law. MPCA, MDA Database Listings: The Minnesota Pollution Control Agency and Minnesota Department of Agriculture (MDA) databases were reviewed to identify verified and potentially contaminated sites that may be encountered during the proposed project. The significant MPCA listings associated with the defined sites within 500 feet of the project location are reported as inactive, but this does not mean the sites are free of contamination. Prior to Project Area redevelopment, further environmental investigation near these sites is recommended for environmental planning purposes. Further, a Construction Contingency Plan (CCP) is recommended for the proper management of contamination and/or regulated materials encountered during construction. If contaminated materials are encountered during excavation, construction activities will cease and a the CCP will be implemented. 25