4.9. SR 01-03-2017 - Laserfiche WebLink

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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. Based on nearby Well and Boring Reports obtained through the Minnesota Department of Health (MDH) Well Index, the approximate depth to groundwater in the area generally ranges from 30- 60 feet below ground surface, with some surface water present within wetlands. The project area is on the edge of a MDH wellhead protection area, and a portion of the project area is within the Drinking Water Supply Management Area (DWSMA) zone of vulnerability (Figure 14, Appendix A). The level of vulnerability for this area is low. There is one private well on the existing 13 acre ERX Motor Park parcel and 85 MDH field verified wells within a 1 -mile radius of the project site (Figure 15, Appendix A). 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. Not Applicable. There is no wastewater discharged to a publicly owned treatment facility. 2) If the wastewater discharge is to a subsurface sewage treatment systems (SSTS), describe the system used, the design flow, and suitability of site conditions for such a system. Phase I will not result in any wastewater discharge. Satellite toilets and hand wash centers will be brought onsite for temporary use during events. The resulting waste will be hauled off-site for proper treatment and disposal by a qualified commercial service provider. Phase 2 may result in the construction of restroom/shower facilities to serve the campground that would discharge to a SSTS. The proposed system would likely consist of septic tank configurations followed by a soil -based treatment system, such as mound, trench, or at -grade drain field. Any SSTS proposed would be designed to meet all federal, state, and local requirements and will require coordination and permits the City of Elk River. 3) If the wastewater discharge is to surface water, identify the wastewater treatment methods and identify discharge points and proposed effluent limitations to mitigate impacts. Discuss any effects to surface or groundwater from wastewater discharges. Not Applicable. There is no wastewater discharged to surface water. Page 12