01-06-2014 Council Packet Special Meeting

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Item #01- Special Council Meeting - 01106114 File #13-3638 & 13-3639 [Total Pages 99] 11. Water resources: a. Describe surface water and groundwater features on or near the site in a.!. and a. U. 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 I mile of the project. Include DNR Public Waters Inventory (PWI) number(s), if any. The largest water body within the Project Area is a 7 acre unnamed lake (PWI #: 27094500) located on the east side of the property. Another six small and unnamed ponds (0.1-0.25 acres) are located throughout the Project area, typically near the edge of the property. Various small streams and drainage ditches run through the property, some of which drain to the unnamed lake on the property. The National Wetland Inventory indicates that there are around 5.6 acres of wetland areas, excluding the ponds previously mentioned. The largest (PWI # 27094400) is located in the center of the southern edge of the property and is approximately 4.25 acres in size. It is categorized as a Palustrine Emergent wetland that is seasonally flooded (PEMC), and also makes up the 100 year event floodplain. No special designations were discovered within the Project Area. The only water related designations within 1 mile of the project are water body impairments. All are related to bays of Lake Minnetonka or water bodies that feed into the lake. The impaired waters, as categorized by the MPCA, are: Painter Creek (07010206-700), Jennings Bay (27013315), Lake Minnetonka -West Arm (27013314), Forest Lake (27013900), Lake Minnetonka -North Arm (27013313), Stubbs Bay (27013312) and Maxwell Bay (27013311). H. Groundwater -- aquifers, springs, seeps. Include: 1) depth to groundwater; 2) ifproject 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 fluctuate somewhat throughout the site, with most groundwater believed to be approximately 20-25 feet from the surface based on data from an onsite well. The soils investigation revealed groundwater as little as 9-15 feet below the surface at a select few sites. There are additional aquifers at and below confining bedrock levels: Prairie Du Chien -Jordan Aquifer, Franconia -Ironton - Galesville Aquifer, and Mt. Simon -Hinckley Aquifer. Depths to these aquifers are not precisely known, but it is expected the Prairie Du Chien -Jordan Aquifer would be 75-90 feet below ground level. This aquifer is the most likely to be accessed by wells. The project is not within a MDH wellhead protection area or special well construction area. Six well sites were identified on the MDH web page, with one of these being and abandoned and sealed (248683). The five existing wells have MDH numbers: 122908, 163883, 205191, 225974, 225975. Many of the properties adjacent to Project site possess their own wells. 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. 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 faciliiy, identify any pretreatment measures and the ability of the facility to handle the added water and waste page 6