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7 <br /> <br />runoff rates for the 2-, 10-, and 100-year rainfall events. Runoff rates for the 10-day snow melt <br />event were not provided at this time and are not required as basin outlets are below the 100- <br />year HWL. <br /> <br />Pre- and Post- Development Discharge Rates (cfs) <br />Condition 2-Year 10-Year 100-Year 10-Day <br />Snowmelt <br />Existing 0.64 2.73 9.34 Not provided <br />Proposed 0.22 1.94 8.10 Not provided <br /> <br />Public Utilities <br /> <br />The day care facility will be municipally served by a 21” sanitary sewer main and a 12” <br />watermain located along Apollo Drive. <br /> <br />The subject site is located in Utility Staging Area 1A (2018-2025) and Sanitary District 2 (Sub- <br />District 2B). Flow from this area is collected southward to MCES Meter M211 and Gravity <br />Interceptor 8361 along North Road which passes southwest through Circle Pines. <br /> <br />Tree Preservation and Mitigation Standards <br /> <br />The Environmental Coordinator and Environment Board reviewed the tree preservation and <br />landscaping requirements. The following comments are from the updated April 26, 2023 <br />Environmental Board staff report. Additional comments are provided below in the attached <br />May 1, 2023 June 1, 2023 memo. <br /> <br />A tree survey was performed that identified: <br /> <br /> <br /> <br /> <br /> <br />The applicant’s updated tree survey indicates 47 mitigation trees will be required. The Basic <br />Use Area should include 20 feet outside of the fence on the east building perimeter as well. <br />This reduces the total number of mitigation trees required to 34. <br /> <br />Of the 10 trees that are categorized as “Saved”, 8 are invasive species (Siberian elm) and 2 are <br />not on the current project site. These trees will not provide existing tree credit. <br /> <br />32 trees planted in open space around buildings and ponds will also qualify as mitigation trees. <br />There an additional 2 mitigation trees required to meet the standard. Two additional trees have <br />been added. <br /> <br />Tree preservation and mitigation standards have not been met. <br /> <br />Open Areas Landscape Standards <br /> <br />Total Trees 141 <br />Total Trees Removed 131 <br />Total Trees Saved 10