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y City of Arden Hills - 2030 Comprehensive Plan Bench Copy - Distributed at the 06/15/15 Work Session APPENDIX E — SANITARY SEWER PLAN The entire City of Arden Hills is within the Metropolitan Urban Service Area (MUSA), therefore sanitary sewer interceptor and treatment is provided to the City via the Metropolitan Council Environmental Services (MCES) system. The City does not own or operate any sewage treatment facilities. Within the City, the system is under the jurisdiction of the City's sanitary sewer utility. Historically, the sanitary sewer utility has managed to be self-supporting; with future infrastructure replacement needs financed from revenues generated from the fees paid by users. The Arden Hills sanitary sewer system consists of approximately 42 miles of sanitary sewer, over 1,050 manholes, and 14 lift stations (Map E.1). The public sanitary sewer provides service to approximately 2,576 households and businesses. Of these connections, approximately 2,245 are residential and 331 are non-residential. The City's sanitary sewer lines and lift stations collect sewage from individual parcels or properties and route the sewage to the MCES sewer system. Wastewater is collected and delivered to four connection points with the MCES system: Meter 051, Meter 052, Meter 054, and Meter 059. The City's sanitary sewer system, along with the connection points to the MCES system, is identified on Figure E-1. Sanitary sewer in Arden Hills flows into MCES interceptors at these points, which deliver the waste to the Pigs Eye Wastewater Treatment Plant in Saint Paul. Operated by the MCES, this plant received an estimated 327 million gallons in 2007. The City operates and maintains 14 sanitary sewer lift stations. Since 1990, 10 of these have been replaced. The last four lift stations to be replaced are scheduled for replacement in the next 10 years. All of these facilities require around the clock monitoring. It is in the City's CIP to acquire SCADA (supervisory control and data acquisition) in the next five years, which will allow staff to monitor all lift stations and water supply facilities remotely. 1. INTERCOMMUNITY SERVICES The City of Arden Hills has inter-community utility service connections with the neighboring municipalities of Shoreview, Mounds View, and Roseville. Intercommunity utility service connections are listed in Table E.1. Neighboring communities have not requested additional sanitary sewer extensions and the City is not aware of any potential new requests. Approved: September 28, 2009 E-1