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Pearson Farm Residential Development EAW Draft — March XX, 2017 <br />Development of the project area will disturb more than one acre of land and therefore will require <br />application for coverage under the National Pollutant Discharge Elimination System/State Disposal <br />System (NPDES/SDS) General Permit administered by the Minnesota Pollution Control Agency <br />(MPCA) prior to initiation of earthwork. In compliance with the General NPDES Permit for <br />construction activities, the project proponent and construction contractor will need to implement Best <br />Management Practices (BMPs) to reduce erosion and sedimentation and stabilize exposed soils after <br />construction. Erosion and sedimentation control BMPs related to stormwater runoff are discussed in <br />greater detail within Item 11.b.ii. <br />NOTE: For silica sand projects, the EAW must include a hydrogeologic investigation assessing the potential <br />groundwater and surface water effects and geologic conditions that could create an increased risk of potentially <br />significant effects on groundwater and surface water. Descriptions of water resources and potential effects from <br />the project in EA Wltem 11 must be consistent with the geology, soils and topography/land forms and potential <br />effects described in EAW Item 10. <br />11. Water Resources <br />a. <br />Describe surface water and groundwater features on or near the site in a. i. and a. ii. below. <br />i. Surface water - lakes, streams, wetlands, intermittent channels, and county/judicial ditches. Include <br />any special designations such as public waters, trout stream/lake, wildlife lakes, migratory waterfowl <br />feeding/resting lake, and outstanding resource value water. Include water quality impairments or <br />special designations listed on the current MPCA 303d Impaired Waters List that are within 1 mile of <br />the project. Include DNR Public Waters Inventory number(s), if any. <br />The project area includes three wetlands that were delineated by Kjolhaug Environmental Services <br />on October 6, 2016 (Figure 6, Table 5). Of the three wetlands, only Wetland 1 corresponds to a <br />wetland location shown on National Wetlands Inventory (NWI) mapping (Figure 10). All three <br />wetlands correspond to locations of predominantly hydric Isan soils (Figure 9, Table 4). There are <br />no listed or mapped trout streams/lakes, wildlife lakes, migratory waterfowl feeding/resting lakes, or <br />outstanding resource value waters in or near the project area. <br />Delineated wetland boundaries have been approved by the Lower Rum River Watershed <br />Management Organization (LRRWMO) and wetland boundary approval from the U.S. Army Corps <br />of Engineers (USACE) is pending. The LRRWMO is the local government unit administering the <br />Minnesota Wetland Conservation Action (WCA). Appendix A includes the LRRWMO notice of <br />decision approving the wetland boundary and type determinations. The site does not include any MN <br />DNR public waters, public waters wetlands, or public watercourses. <br />Table 5. Wetlands on the Pearson Farm Residential Development site <br />Map Acres <br />ID Onsite Circ. 39 Cowardin <br />1 0.34 1 PEMAf <br />2 0.64 1 PEMAf <br />3 0.04 1 PEMAf <br />Total 1.02 <br />Classification <br />Eggers and Reed <br />Seasonally flooded basin <br />Seasonally flooded basin <br />Seasonally flooded basin <br />Dominant Vegetation <br />Soybeans, reed canary grass <br />Stunted corn, green bulrush <br />Stunted corn <br />10 <br />