Agenda - Council - 01/14/2020 - Laserfiche WebLink

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Tim Gladhill, City of Ramsey September 26, 2019 Page 2 connecting trunk sewer and lift station. Pipe capacity is not included in the Plan. o Assignment of 2040 households and employment growth forecasts by Metropolitan interceptor facility. Table 62: Sewer Flow Forecasts for North Trott Brook Sewer District on Page 220 needs to be adjusted for the Rum River Sewer District row. • Describe the requirements and standards in the City for minimizing inflow and infiltration. o Include a copy of the local ordinance or resolution that prohibits discharge from sump pumps, foundation drains, and/or rain leaders to the sanitary sewer system. o Include a copy of the local ordinance or resolution requiring the disconnection of existing foundation drains, sump pumps, and roof leaders from the sanitary sewer system. • Describe the sources, extent, and significance of existing inflow and infiltration in both the municipal and private sewer systems. o Include a breakdown of residential housing stock age within the City into pre- and post- 1970 era, and what percentage of pre-1970 era private services have been evaluated for I/1 susceptibility and repair. o Include the measured or estimated amount of clearwater flow generated from the public municipal and private sewer systems. ■ For quantifying I/1, some communities have used the EPA guidance to determine the annual I/1 and peak month I/1 https://www3.epa.ciov/region 1/sso/pdfs/Guide4EstimatiniInfiltrationlnflow.pdf • Describe the management program for sub -surface sewage treatment systems (SSTS) to comply with MPCA 7080 regulations. • Provide a map or maps (GIS shape files or equivalent) showing the following information: o Location of sub -surface sewage treatment systems. o Location of nonconforming systems or systems with problems. Forecasts (Todd Graham, 651-602-1322) • The City requests a revision of its population, households, and employment forecast, exceeding what is found in the Council's system statement (Tables 1-4, and 22-24). The employment forecast revision now requested has been previously discussed, found reasonable, and agreed to by Council staff. The population and households revision have not been previously agreed to. Council's concern is the several hundreds of households added during the 2030-2040 decade will be unserviced and reliant on private septic systems (Table 60). The land consumption entailed by rural, unsewered development is in competition with the City's growth goals inside the MUSA. The Plan is incomplete, awaiting an agreement on an acceptable forecast revision and sewer -serviced forecast. Census Council Forecast Observed City's Proposed Forecast 2010 2020 2030 2040 2018 2020 2030 2040 Population 23,668 26,400 30,700 34,700 27,051 27,550 33,350 39,150 Households 8,033 9,400 11,300 13,000 9,211 9,500 or 9,600** 11,500 13,500 Employment 4,779 6,700* 7,500* 8,100* 6,864 6,900 7,800 8,400