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" : Site <br /> R O U P <br /> Drainage Area Existing Rate (cfs) <br /> 2-YR [2.83"] 10-YR[4.23"] 100-YR [7.30"] <br /> EX1 (TO EX WETLAND) 6.36 12.48 26.86 <br /> EX2 (TO LONG LAKE RD) 0.16 0.32 0.70 <br /> EX3 (TO EAST) 0.01 0.02 0.05 <br /> EX4(OFF-SITE TO EX.WETLAND) 3.99 6.29 11.39 <br /> TOTAL (REACH) 10.51 19.11 39.01 <br /> Drainage Area Proposed Conditions Rate (cfs) <br /> 2-YR [2.83"] 10-YR [4.23"] 100-YR [7.30"] <br /> PR1A (TO EX WETLAND) 2.93 5.87 12.78 <br /> 1 P (PR1 B) 0.16 1.76 6.82 <br /> 2P (P R1 C & P R4) 3.74 8.23 12.79 <br /> PR2 (TO LONG LAKE RD) 0.29 0.52 1.07 <br /> TOTAL (REACH) 6.15 14.43 32.75 <br /> Overall Stormwater Rate Summary <br /> Existing Conditions Proposed Conditions <br /> Rate (cfs) Rate (cfs) <br /> 2-Year Event 10.51 6.15 <br /> 10-Year Event 19.11 14.43 <br /> 100-Year Event 39.01 32.75 <br /> The proposed runoff rates are less that the existing peak runoff rates- REQUIREMENT SATISFIED <br /> 3.3 Water Quality Volume <br /> Water quality requirements are met by providing filtration onsite in the amount equal to 1.1 inches of runoff <br /> from the new or reconstructed impervious surfaces. The proposed aboveground filtration systems will be <br /> utilized to meet these requirements. Filtration is being provided in lieu of infiltration due to D soils being <br /> present on site. <br /> The calculations are shown below: <br /> Civil Site Group, PC• 5000 Glenwood Avenue• Golden Valley Minnesota r 55422 <br /> www.CivilSiteGroup.com•(612)615-0060 <br />