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Chapter 153 Water Resource Management Adopted 6/28/2022 <br /> Page 21 of 34 <br />Contamination hotspots/industrial <br />facilities <br />prohibited <br />Contaminated soils Infiltration <br />prohibited Soil analysis <br />Vehicle fueling and <br />maintenance areas <br />Infiltration <br />prohibited <br />Site map with vehicle <br />fueling/maintenance <br />areas shown <br />Physical Limitations <br />Low permeability soils Infiltration restricted <br />1) Carver County Soil <br />Survey data showing <br />greater than 50% of site <br />is hydrologic group C and <br />D soils; or <br />2) Carver County Soil <br />survey data showing <br />greater than 50% of site <br />has the following Unified <br />Soil Classifications: MH, <br />ML, GS, SC, CL, OL, CH, <br />OH <br />3) Documentation that <br />site has been previously <br />disturbed by <br />construction activity that <br />resulted in compaction <br />and/or other significant <br />reduction in permeability <br />as shown by field <br />infiltration test rate <br />showing infiltration rate <br />of less than 0.3 inches <br />per hour.; or <br />4) Documentation of <br />field infiltration tests <br />showing infiltration rate <br />of less than 0.3 inches <br />per hour. <br />Bedrock or <br />groundwater within 3 <br />vertical feet of bottom <br />of volume control <br />practice <br />Infiltration restricted <br />Soil borings required; <br />Piezometer data may be <br />required. <br />Land Use Limitations Wellhead Protection <br />Areas Infiltration restricted Site map with wellhead <br />protection areas shown <br />High Water Elevation Standard. <br />(1)As described below, all applications shall provide vertical separation between low openings of new <br />and existing structures and high water elevations of local existing and proposed stormwater facilities <br />and surface waters. The high water elevations used should be the greater between the 100-year, 24-