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Draft – 10/1/15 <br /> <br />Discharge hydrograph to Peltier Lake (ungated) <br /> <br />Regional Best Management Practices for Water Quality Treatment with Use Controlled by the <br />Minimum Water Quality Treat Requirement <br />1. Minimum required is 1.1-inch across 532 acres of new impervious surface = 48.7 acre-feet <br />Minimum Volume Control Requirement By Infiltration Within the Drainage Area <br />1. Estimated amount of area where infiltration is feasible is 74 acres out of 532 acres = 6.1% * 48.7 <br />acre-feet =2.97 acre-feet <br />Proposed Volume Control Requirement Through Water Reuse Within the Drainage Area1 <br />1. Amount minimum of 2.92 acre-feet; shortage of 0.07 acre-feet <br />Minimum Water Quality Treatment for Reducing Sediment and Total Phosphorus Annual Loads to <br />Peltier Lake Wet Pond Dead Storage (in addition to the live storage required) <br />1. East region – 60 acre-feet <br />2. Central region –35 acre-feet <br />3. West region –15 acre-feet <br />4. Total –110 acre-feet (ratio treatment vol / dead storage volume 2.25) <br /> <br />1 Subject to the District design standard of a maximum of 1-inch per week for 26 weeks during the growing season, and verification for a three <br />year monitoring period. <br />