2020_07-28_PWETCpacket - Laserfiche WebLink

Home

The current elevation of the site ranges from 940 feet to 970 feet. The proposed project would require approximately 60,000 cubic yards of excavation in the southeast portion of the site. 1 1. Water Resources a. Describe surface water and groundwater features on or near the site below. 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 qualify impairments or special designations listed on the current MPCA 303d Impaired Waters List that are within one mile of the project. Include DNR Public Waters Inventory number(s), ifany. There are no surface waters within the project site. A Minnesota Department of Natural Resources (DNR) Public Water Wetland (Zimmerman 62-53 W) is located 0.2 miles to the east of the site. One impaired unnamed stream is located 0.8 miles north of the project, which connects Little Lake Johanna to a Public Water Wetland (Oasis 62-205 W) to the south. The unnamed stream is also a Public Ditch/Altered Natural Watercourse (PWI ID 62014a) (see Figure 4). The stream is impaired due to high levels of chloride. The project will not contribute to the impairment of the stream or any other surface waters near the site due to the implementation of stormwater best management practices (BMPs). ii. Groundwater -aquifers, springs, and seeps. Include 1) depth to groundwater; 2) if project is within a MDH well protection area; and 3) identification of any onsife 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. A geotechnical investigation conducted in 2016 within the project site measured groundwater at an elevation of approximately 920 feet. However, based on the lack of water observed in other borings, the investigation concluded that the water likely represents a perched condition. Perched water could be encountered at various elevations across this site, depending upon the soil layering. The project is not located within any Wellhead Protection Areas or Drinking Water Supply Management Areas. According to the Minnesota Department of Health's Minnesota Well Index,3 there are no wells within the project site or within 150 feet of the project site. 3 Available at httas7//mnwellindex.web.health.state.mn.us/ Rosedale Center EAW 7 February 2020