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7 <br /> <br /> <br />Drainage and utility easements are required to be dedicated 10 feet above the high water level <br />over stormwater drainage ponds and 10 feet outward from the delineated wetland boundary. <br />This requirement is satisfied because easements will be dedicated over the entire outlots. Rear <br />lot lines also have a minimum 10 foot wide easement. <br /> <br />Conservation easements shall be required over Outlots A, B, C and D. <br /> <br />A 100 foot wide private utility easement in favor of Great River Energy exists along the <br />southern boundary of the development. <br /> <br />Landscaping shall be allowed in the drainage and utility easements covering the 15 foot wide <br />landscape buffer area in Outlot E and Outlot F. <br /> <br />Storm Water Management and Erosion and Sediment Control <br /> <br />Per the revised Stormwater Management Plan prepared by Carlson McCain dated April 11, <br />2018, all of the site’s stormwater eventually flows to ACD 32 and to the west. Stormwater <br />leaves the project boundary at two locations: via ACD 32 and a small portion of the property <br />discharges to a ditch along Main Street. The total proposed post-development impervious <br />surface area is approximately 10.4 acres. <br /> <br />Soils on the site are classified as Hydrologic Soil Group A/D. Groundwater elevations ranged <br />from 898 feet to 904 feet. <br /> <br />The Stormwater Management Plan and plan sheets identify four (4) stormwater ponds, one (1) <br />infiltration basin and Wetland C on site. Pond 100 and Pond 400 are required for stormwater <br />management. Pond 200 and Pond 300 are material excavation ponds. The storm water ponds <br />and trails are located near the wetlands and upland buffers. This strategic design is the basis of <br />the City’s greenway system by creating a multi-functional greenway corridor intended to <br />provide areas for stormwater management, upland buffers for wetland protection and natural <br />resource conservation, and open space and trails for people. <br /> <br />A maintenance access trail is shown around Pond 200. This access trail will be graded but will <br />not require gravel or paved improvements. <br /> <br />Ownership of each outlot (City, HOA, developer etc.) shall be determined by the time of final <br />plat approval. <br /> <br />The site will be mass graded in one (1) phase. Residential home development will occur over <br />several years. <br /> <br />Utilities <br /> <br />Public water, sanitary and storm sewer utilities will be installed within the development. <br /> <br /> <br />