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Soil Unit Name <br />Slopes <br />HEL* <br />Hydrologic <br />Hydric <br />Farmland <br />Symbol <br />y <br />(° ) <br />Group** <br />Rating*** <br />Classification <br />Du <br />Dundas loam <br />- <br />NHEL <br />B/D <br />Predominately <br />Prime farmland <br />Hydric <br />if drained <br />Hde <br />Hayden fine sandy <br />2-6 <br />NHEL <br />8 <br />Predominately <br />All areas are <br />loam <br />Non-Hydric <br />prime farmland <br />Hayden fine sandy <br />Farmland of <br />HdC2 <br />loam, eroded <br />6-12 <br />PHEL <br />B <br />Non-Hydric <br />statewide <br />importance <br />Iw <br />Isanti fine sandy <br />_ <br />NHEL <br />AID <br />Predominately <br />Not prime <br />loam <br />Hydric <br />farmland <br />Kr <br />Kratka loamy fine <br />- <br />NHEL <br />8/D <br />Hydric <br />Not prime <br />sand <br />farmland <br />Lb <br />Lake beaches <br />- <br />NHEL <br />AID <br />Predominately <br />Not prime <br />Non-Hydric <br />farmland <br />Lw <br />Loamy wet land <br />- <br />NHEL <br />B/D <br />Hydric <br />Prime farmland <br />if drained <br />Mo <br />Markey muck, <br />0-1 <br />NHEL <br />AID <br />Hydric <br />Not prime <br />occasionally ponded <br />farmland <br />Mc <br />Marsh <br />- <br />NHEL <br />AID <br />Hydric <br />Not primefarmland <br />Nessel fine sandy <br />Predominately <br />All areas are <br />NeA <br />loam <br />1-4 <br />NHEL <br />C <br />Non-Hydric <br />prime farmland <br />Rf <br />Rifle mucky peat <br />- <br />NHEL <br />AID <br />Hydric <br />Not primefarmland <br />Predominately <br />Farmland of <br />SoA <br />Soderville fine sand <br />0-3 <br />NHEL <br />AID <br />statewide <br />Non-Hydric <br />importance <br />Zimmerman fine <br />Predominately <br />Not prime <br />Zm8 <br />sand <br />1-6 <br />NHEL <br />A <br />Non-Hydric <br />farmland <br />Zimmerman fine <br />Predominately <br />Not prime <br />ZmC <br />sand <br />6-12 <br />NHEL <br />A <br />Non-Hydric <br />farmland <br />*Highly Erodible Land **Infiltration Rate ***Percent HVdric Rating <br />HEL: Highly Erodible Land A: >0.30 in/hr Hydric: 100% <br />PHEL: Potentially Highly Erodible Land B: 0.15-0.30 in/hr Predominately Hydric: > 67% & <100% <br />NHEL: Not Highly Erodible Land C: 0.05-0.15 ins/hr Partially Hydric: > 33% & <67% <br />D: <0.05 in/hr Predominately Non-Hydric: 51% & <33% <br />Not Hydric: 0% <br />The erosion capabilities of the soils are susceptible as described by the NRCS Soil Erodibility (Kw) Factor <br />rating which ranges across the site from 0.10 to 0.32. Construction activities will temporarily expose <br />soils to an increased risk of erosion from wind and precipitation. Appropriate erosion and sediment <br />control best management practices (BMPs) will be selected based on current site conditions and <br />maintained through the duration of each construction phase to reduce the potential of sedimentation <br />occurring to surface water resources or migrating offsite. Temporary BMPs will be inspected and <br />maintained (per the NPDES Construction Stormwater Permit) until permanent vegetation and <br />stabilization has occurred. Permanent BMPs will be incorporated into project design to minimize <br />erosion during routine operational activities (post -construction). <br />Page 12 <br />