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Updated Storm Water Management Plan (SWMP) <br />City of Ramsey, Minnesota <br />The Minnesota DNR maintains a database on all Minnesota lakes. Some of this <br />data is very limited or not available, while other lakes have been studied in great <br />detail. To find the most current data on the lakes in Ramsey, access the Lake <br />Finder on the DNR Website. <br />The WMO document has a list of monitoring locations. The Anoka Conservation <br />District (ACD) has water quality information. The ACD has also published a <br />water atlas. <br />6. Water Appropriations <br />Upon approval by all of the review authorities, the City's approved Wellhead <br />Protection Plan will be incorporated into this plan by reference. At present, the <br />draft includes all of the current municipal ground water appropriations. The City <br />is planning toconsidering obtaining surface water appropriations from the <br />Mississippi River for a 20 MGD water treatment plant. The scope of the project <br />will require Regional Participation. The City is working with the Metropolitan <br />Council and others to secure support and funding for a regional water treatment <br />plant. The water treatment plant is intended to supply water for the anticipated <br />population growth of the City. When the new water treatment plant is approved <br />and constructed, the existing City wells and permitted groundwater <br />appropriations are planned to remain unchanged to be readily available as backup <br />for water needs. <br />7. Soil Data <br />Ramsey City Code, Section 9117-424.13 (included in Appendix A) covers types <br />of soil that are adequate for septic systems. According to Ramsey City Code <br />Section 9.13.01, the City adopts the Anoka County Soil Survey, 1977 (Soil <br />Survey) and supplemental operational soil surveys as its official soil survey and <br />makes it a part of the City Code. The Anoka County soil survey map of the <br />Ramsey area is attached as Figure 2625. In general, the City of Ramsey has soils <br />in SCS Hydrologic Soil Type A. Table 16 lists the recommended infiltration <br />rates based on SCS hydrologic soil types. <br />Table 16 <br />Infiltration Rates Per Soil Type <br />Hydrologic <br />Soils Type <br />Infiltration Rate <br />Soil Texture <br />A <br />0.30 inches/hour <br />Sand, loamy sand, or sandy loam <br />B <br />0.15 inches/hour <br />Silt loam or loam <br />C <br />0.07 inches/hour <br />Sandy clay loam <br />Source: Urban Hydrology for Small Watersheds (SCS, 1986), <br />as amended, revised or supplemented. <br />8. Land Use and Public Utility Services <br />Section IV <br />February 20, 2015March 6, 2015 <br />Page 18 <br />