08-01-2022 Council Work Session Packet

Home Search

aALLIANT ENVIRONMENTAL ASSESSMENT WORKSHEET 11 Robinson Sod Farm PAGE 10 LnA Lino loamy find sand, 5.7% 5 Non-hydric Farmland of statewide importance 0 to 4 percent slopes Zimmerman find sand, ZmB 1 to 6 percent slopes 0.8% 2 Non-hydric Not prime farmland A review of the 2-foot contours of site shows that it is relatively flat, ranging from 896 to 900 feet above sea level. A network of drainage ditches cross through the site at elevations of 892 to 894 feet above sea level. The development of the area will disturb more than one acre of land. Therefore the project will require a National Pollutant Discharge Elimination System/State Disposal System (NPDES/SDS) General Permit administered by the Minnesota Pollution Control Agency (MPCA) prior to initiation of earthwork. In compliance with the General NPDES Permit for construction activities, the project proponent and construction contractor will implement Best Management Practices (BMPs) to reduce erosion and sedimentation and stabilize exposed soils after construction. Erosion and sediment control BMPs related to stormwater runoff are discussed in greater detail within Item 11.b.ii. NOTE: For silica sand projects, the EA must include a hydrogeologic investigation assessing the potential groundwater and surface water effects and geologic conditions that could create an increased risk of potentially significant effects on groundwater and surface water. Descriptions of water resources and potential effects from the project in EA Item 11 must be consistent with the geology, soils and topography/land forms and potential effects described in EAW Item 10. 11. Water Resources a. Describe surface water and groundwater features on or near the site in a.i. and o.ii. below. i. Surface water - lakes, streams, wetlands, intermittent channels, and county/judicial ditches. Include any special designations such as public waters, trout stream/lake, wildlife lakes, migratory waterfowl feeding/resting lake, and outstanding resource value water. Include water quality impairments or special designations listed on the current MPCA 303d Impaired Waters List that are within 1 mile of the project. Include DNR Public Waters Inventory number(s), if any. According to the Minnesota Department of Natural Resources (MN DNR) Public Waters Inventory, there are no public water wetlands, basins or waterways present on the project site and within 1 mile of the site (Appendix A, Figure 9). The NWI map identified five wetland types within the project site including 1 riverine (R2UBFx), that corresponds to the public and private ditches on site, and four seasonally flooded/saturated emergent wetlands (3 PEM1d and 1 PEM1Af). Rice Creek Watershed Map Viewer identifies one Anoka County ditch, ACD-10-22-32 Main Trunk and Branch 2 (Appendix A, Figure 10). An on -site field wetland delineation is expected to be conducted in summer 2022. After regulator review of the wetland delineation, a Notice of Decision (NOD) will be issued.