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Pervious Land Use acre <br /> C. Lawn, Flat .1944 <br /> Pervious Total 0.1944 <br /> Impervious Land Use acre <br /> ROOF TOPS FLAT 0.0786 <br /> DRIVEWAYS FLAT 0.0747 <br /> SIDEWALKS FLAT 0.0023 <br /> Impervious Total 0.1556 <br /> Basin Total 0.35 <br /> Element Flows To: <br /> Surface Interflow Groundwater <br /> ANALYSIS RESULTS <br /> Stream Protection Duration <br /> Predeveloped Landuse Totals for POC #1 <br /> Total Pervious Area:0.3112 <br /> Total Impervious Area:0.0388 <br /> Mitigated Landuse Totals for POC #1 <br /> Total Pervious Area:0.1944 <br /> Total Impervious Area:0.1556 <br /> Flow Frequency Return Periods for Predeveloped. POC #1 <br /> Return Period Flow(cfs) <br /> 2 year 0.040227 <br /> 5 year 0.068735 <br /> 10 year 0.092572 <br /> 25 year 0.128917 <br /> 50 year 0.160888 <br /> 100 year 0.19738 <br /> Flow Frequency Return Periods for Mitigated. POC #1 <br /> Return Period Flow(cfs) <br /> 2 year 0.079379 <br /> 5 year 0.115703 <br /> 10 year 0.143832 <br /> 25 year 0.184351 <br /> 50 year 0.218371 <br /> 100 year 0.25587 <br /> Drainage Report-9227 4"Ave W Everett,WA 98204 <br /> Nov. 10,2022 Page 28 <br />