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page 8 10. Geology, soils and topography/land forms: a. Geology - Describe the geology underlying the project area and identify and map any susceptible geologic features such as sinkholes, shallow limestone formations, unconfined/shallow aquifers, or karst conditions. Discuss any limitations of these features for the project and any effects the project could have on these features. Identify any project designs or mitigation measures to address effects to geologic features. The surficial geology of the project area is loamy till with moderate relief (Figure 9). Till is unsorted material deposited directly by glacial ice. The till within the project area was deposited during the most recent glacial period, which is referred to as the Wisconsin episode of the Quaternary Period, occurred from 110,000 years to 12,000 year before present time. The till is primarily loam-textured, unsorted sediment with pebbles, some cobbles and a few boulders. The till deposits form round or elliptical hills with an overall relief of about 40 feet to 70 feet. Within the project area, the till extend roughly 50 feet down before reaching the first bedrock layer. The first bedrock layer under most of the project area is Platteville and Glenwood Formation (Figure 10). The formation is made up of the Platteville formation underlain by the Glenwood formation. The Platteville formation is made up primarily of limestone and dolostone. b. Soils and topography - Describe the soils on the site, giving NRCS (SCS) classifications and descriptions, including limitations of soils. Describe topography, any special site conditions relating to erosion potential, soil stability or other soils limitations, such as steep slopes, highly permeable soils. Provide estimated volume and acreage of soil excavation and/or grading. Discuss impacts from project activities (distinguish between construction and operational activities) related to soils and topography. Identify measures during and after project construction to address soil limitations including stabilization, soil corrections or other measures. Erosion/sedimentation control related to stormwater runoff should be addressed in response to Item 11.b.ii. The soil on the project area is Urban land - Udorthents complex with 0-6% slopes (Table 4, Figure 11). These soils are the result of cut and fill activity. The soils are well drained. Grading will include approximately 65,000 cubic yards in the project area which includes grading for below grade levels. The cut and fill is expected to result in a net balance. Excess material unsuitable for foundations may require export from the site. Improved foundation material will be imported onsite as necessary. The project construction will comply with all NPDES permit conditions to ensure proper stabilization time. After project construction, all areas will be landscaped. Table 4: Soils within Project Area Saint Anthony Village, Minnesota Map Symbol Name Percent Slopes Erodibility Status Acres Percent of Project Limits U1A Urban land- Udorthents 0-2% slopes Not Highly Erodible 5.6 acres 36.3% U6B Urban land- Udorthents 0-6% slopes Not Highly Erodible 9.84 acres 63.7% 43