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• <br /> KUKHOTSKIY DUPLEX <br /> DRIVEWAYS FLAT 0.037 <br /> Impervious Total 0.111 <br /> Basin Total 0.315 <br /> Element Flows To: <br />• Surface Interflow Groundwater <br /> ANALYSIS RESULTS <br /> Stream Protection Duration <br /> 41 <br /> Predeveloped Landuse Totals for POC #1 <br /> Total Pervious Area:0.284 <br /> Total Impervious Area:0.031 <br /> Mitigated Landuse Totals for POC #1 <br /> Total Pervious Area:0.204 <br /> Total Impervious Area:0.111 <br />• Flow Frequency Return Periods for Predeveloped. POC #1 <br /> Return Period Flow(cfs) <br /> 2 year 0.015627 <br /> 5 year 0.022522 <br /> 10 year 0.027594 <br /> 25 year 0.034589 <br /> 50 year 0.040233 <br /> 41 100 year 0.046254 <br /> Flow Frequency Return Periods for Mitigated. POC #1 <br /> Return Period Flow(cfs) <br /> 2 year 0.041555 <br /> 5 year 0.059752 <br />• 10 year 0.073117 <br /> 25 year 0.091522 <br /> 50 year 0.106355 <br /> 100 year 0.122164 <br />• Increase in Undeveloped 100 year storm event: -0.0760 cfs. < 0.10 cfs. <br /> Minimum Requirement# 8: Wetland Protection <br /> No known wetlands onsite or within 300 feet of the site. Wetland protection is not <br /> required. <br />• WESTERN ENGINEERS,INC. 20 PROJECT:19-1825-A <br />