Agenda - Planning Commission - 08/02/2018

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North Dayton Development AUAR standard requirements of the local ordinances and any special measures that would be added for AUAR purposes should be included. The project area includes a number of rolling hills and wetland depressions with approximately 84 feet of elevation difference between the lowest and highest points on the site (lowest points are in the NE corner of the property as land slopes towards the Mississippi River, and highest points are generally south- central on the site atop four main hills). Slope changes on the site have the potential to generate erosion, impact wetlands, and introduce discharge to the Mississippi River. Erosion control measures will be implemented to minimize erosion and protect both wetlands and the river from sediment. In general, earthmoving will involve the flattening of slopes to accommodate the proposed development. This may involve the removal of material from the south central portion of the site to create a more even surface. Since the site currently slopes towards the Mississippi River, special considerations should be made during grading to minimize erosion and sediment delivery to the river. As shown on Figure 8, the soils on the site consist of the following: Map Symbol SCS Soils Classification Percent of Project Area D4A Dorset sandy loam, 0 to 2 percent slopes 0.1% D67B Hubbard loamy sand, Mississippi River Valley, 2 to 6 percent 0.04% slopes L16A Muskego, Blue Earth, and Houghton soils, ponded, 0 to 1 0.1% percent slopes L22C2 Lester loam, morainic, 6 to 12 percent slopes, eroded 32.2% L22D2 Lester loam, morainic, 12 to 18 percent slopes, eroded 6.0% L22F Lester loam, morainic, 25 to 35 percent slopes 1.0% L23A Cordova loam, 0 to 2 percent slopes 3.9% L24A Glencoe loam, depressional, 0 to 1 percent slopes 2.8% L25A Le Sueur loam, 1 to 3 percent slopes 3.5% L36A Hamel, overwash-Hamel complex, 1 to 4 percent slopes 4.7% L37B Angus loam, 2 to 6 percent slopes 19.9% L44A Nessel loam, 1 to 3 percent slopes 13.2% L45A Dundas-Cordova complex, 0 to 3 percent slopes 2.2% L49A Klossner soils, depressional, 0 to 1 percent slopes 0.9% L6OB Angus -Moon complex, 2 to 5 percent slopes 2.5% L61C2 Lester-Metea complex, 6 to 12 percent slopes, eroded 2.3% L64A Tadkee-Tadkee, depressional, complex, 0 to 2 percent slopes 0.3% L70D2 Lester-Malardi complex, 12 to 18 percent slopes, eroded 1.6% L132A Hamel -Glencoe, depressional, complex, 0 to 3 percent slopes 1.8% 18