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City of Arden Hills — 2030 Comprehensive Plan <br /> Table E.3- Sewer Flow by Interceptor by Year <br /> 2010 2020 2030 <br /> Average Annual Allowable Average Annual Allowable Average Annual Allowable <br /> Wastewater Flow Peak Hourly Wastewater Flow Peak Hourly Wastewater Flow Peak Hourly <br /> Interceptor (MGD) Flow(MGD) IMGD) Flow fMGD) (MGD) Flow(MGD) <br /> MCES 59 0.26 1.84 0.36 2.41 0.36 2.41 <br /> MCES 54 0.19 0.281 0.24 0.28 0.24 0.28 <br /> MCES 52 0.04 0.17 0.04 0.17 0.04 0.17 <br /> .73 <br /> MCES 51 0.37 1.55 0.45 1.55 0.45 1.55 <br /> MCES 203 <br /> (to Mounds View) unknown unknown 0.21 unknown 0.64 unknown <br /> ota 1 <br /> 3. ON-SITE SEWAGE TREATMENT <br /> All but three structures in the City of Arden Hills are connected to the sanitary <br /> sewer system. The following four properties have private Individual Sewage <br /> Treatment Systems (ISTS): <br /> o 5400 Highway 8 (State of Minnesota — MnDOT Facility) <br /> o 5420 Highway 8 (State of Minnesota — MnDOT Facility) <br /> o 3233 Snelling Avenue (private residence) <br /> o 1680 Oak Avenue (private residence) <br /> The two State of Minnesota properties are exempt from City requirements. The <br /> two private residences are nearly 700 feet and 600 feet, respectively, from the <br /> nearest sewer line but are subject to all City regulations and Minnesota Rules <br /> Chapter 7080. The City Code requires structures with on-site septic systems to <br /> connect to the municipal sanitary sewer system within two years of sewer service <br /> being made available. The City Code needs to be updated to include the <br /> following ISTS regulations: <br /> o Require inspections and/or pumping every three years; <br /> o Require repair or replacement of failing systems within five years; <br /> o Require replacement of a system that poses an imminent public health or <br /> safety threat within ten months; and, <br /> o Develop an enforcement system that addresses failing systems or <br /> systems found to be an imminent public health threat. <br /> Since the City has only two ISTSs under its jurisdiction, a full tracking and <br /> notification database is not needed. <br /> Approved: September 28, 2009 <br /> E-3 <br />