08-01-2022 Council Work Session Packet

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aALLIANT ENVIRONMENTAL ASSESSMENT WORKSHEET 11 Robinson Sod Farm The National Hydrography Map (NHD) identifies ditches throughout the property that correspond with the NWI riverine features identified on site and the Anoka County ditch. The Minnesota Pollution Control Agency (MPCA) Impaired Waters Map does not identify any impaired waterways or basins within the project site and within 1 mile of the project site. ii. Groundwater— aquifers, springs, seeps. Include: 1) depth to groundwater; 2) if project is within a MDH wellhead protection area; 3) identification of any onsite and/or nearby wells, including unique numbers and well logs if available. If there are no wells known on site or nearby, explain the methodology used to determine this. Groundwater levels vary across the site. In the soil boring testing locations, groundwater ranged from approximately 5 to 10 feet below the soil surface. However, it should be noted that the observation periods for the borings were relatively short, and project planning can expect groundwater levels to fluctuate based on seasonal and annual factors such as flooding, irrigation, precipitation, freeze/thaw, and surface drainage modifications. Based on the MN DNR Minnesota Spring Inventory, there are no springs or seeps located within the project site. The project site is not located within a MDH wellhead protection area. The project site is within 0.5 mile of the Minnesota correctional facility — Lino Lakes drinking water supply management area (DWSMA) and within approximately 1.5 mile of the City of Blaine's (East) DWSMA. There are two wells located on site. Their unique well numbers are 231862 and 444819 (Appendix A, Figure 11; Appendix B). See Table 6 below for more information on the wells. On site wells will be sealed in accordance with MDH requirements. Table 7. Water Wells Located Within the Project Site 231862 900 N/A 720 196 N/A Multiple Yes 444819 899 Domestic 200 185 45 Jordan Yes * Data was taken from the MDH's Well Index (https:Hmnwellindex.web.health.state.mn.us/) b. Describe effects from project activities on water resources and measures to minimize or mitigate the effects in Item b.i. through Item b.iv. below. i. Wastewater -For each of the following, describe the sources, quantities and composition of all sanitary, municipal/domestic and industrial wastewater produced or treated at the site. 1) If the wastewater discharge is to a publicly owned treatment facility, identify any pretreatment measures and the ability of the facility to handle the added water and waste loadings, including any effects on, or required expansion of, municipal wastewater infrastructure. PAGE 11