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Southways — 1400 Bracketts Point Road <br />Conservation Design Application <br />3. CONSERVATION DESIGN MASTER PLAN <br />Consider Existing Drainage Systems <br />Existing drainage includes a combination of overland flow toward Lake Minnetonka and limited <br />areas that drain to surface storm sewer inlets. After project construction, runoff will generally <br />follow existing drainage patterns, but drainage from new impervious surfaces will be directed to <br />stormwater treatment or infiltration basins prior to discharge to Lake Minnetonka. The existing <br />drainage system is shown on Figure 3 and in Appendix E. The proposed drainage system is <br />shown in Appendix F. <br />Establish Stormwater Management System <br />Stormwater will be managed in compliance with local, state, and federal regulations to provide <br />rate, volume, and sediment control as shown on the Proposed Grading Plan (Appendix F). The <br />project includes design elements that minimize effects of stormwater runoff on water quality and <br />quantity, including ponding/infiltration basins, realignment of part of Bracketts Point Road away <br />from the shoreline, removal of caretaker's buildings near Lake Minnetonka, relocation of <br />sanitary sewer away from the lake, limiting soil disturbance and grading, and construction of <br />new homes to comply with lakeshore setback and impervious surface ratio limits. <br />Remove Invasive Species and Diseased Trees <br />Dead, damaged, and diseased trees will be removed during site redevelopment. Invasive species <br />on the site are limited to creeping Charlie, aka ground ivy, which occurs in turf areas. Limited <br />site grading will remove creeping Charlie from some areas during site redevelopment. Graded <br />areas that are not paved for street realignment or other purposes will be established with new <br />lawn and landscaping. <br />Protect Significant Tree Stands and Woodlands <br />Significant trees will be protected and preserved to the extent feasible. Some tree removal will <br />be required to install the new street, utilities, and homes. Little to no tree removal is expected <br />within 75 feet of Lake Minnetonka. Approximately 77 of the 360 surveyed trees (21%) will be <br />removed during site redevelopment. The Landscaping Plan provides for planting of 61 trees as <br />mitigation for tree removal. The tree inventory is included in Appendix C and the Grading and <br />Landscape Plans are presented in Appendix F. <br />Protect Wetlands and Augment Buffers <br />The proposed project will not impact existing wetlands or wetland buffers. The project will <br />maintain existing vegetation along the shoreline of Lake Minnetonka. New homes will conform <br />to lakeshore setback and impervious surface ratio requirements. Part of Bracketts Point Road <br />will be realigned, and the caretaker's structures near Lake Minnetonka will be removed and <br />replaced with a stormwater basin (see Appendices E and F). <br />4 <br />