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Basin <br />Total <br />Area <br />Roof <br />Concrete <br />Drive/Walk <br />Landscape <br />Paved <br />Street <br />Multi- family <br />Commercial <br />C2 <br />C5 <br />C10 <br />C100 <br />%Imp <br />A <br />4.78 <br />0.00 <br />0.00 <br />4.59 <br />0.18 <br />0.00 <br />0.00 <br />0.09 <br />0.19 <br />0.28 <br />0.52 <br />6.3 <br />B1 <br />1.48 <br />0.00 <br />0.00 <br />1.24 <br />0.24 <br />0.00 <br />0.00 <br />0.11 <br />0.21 <br />0.31 <br />0.53 <br />10.6 <br />B2 <br />0.82 <br />0.02 <br />0.03 <br />0.47 <br />0.30 <br />0.00 <br />0.00 <br />0.19 <br />0.27 <br />0.35 <br />0.56 <br />22.7 <br />P <br />0.95 <br />0.00 <br />0.00 <br />0.91 <br />0.04 <br />0.00 <br />0.00 <br />0.09 <br />0.19 <br />0.29 <br />0.52 <br />6.5 <br />OS <br />0.58 <br />0.00 <br />0.00 <br />0.58 <br />0.00 <br />0.00 <br />0.00 <br />0.08 <br />0.18 <br />0.28 <br />0.52 <br />5.0 <br />TOTAL <br />8.60 <br />0.02 <br />0.03 <br />7.79 <br />0.76 <br />0.00 <br />0.00 <br />0.10 <br />0.20 <br />0.30 <br />0.53 <br />8.6 <br />Weighted Runoff Coefficients <br />WILDCAT MINING CORP. <br />Job Number: 12 -0008 <br />Proposed/ <br />Existing Roof <br />Concrete Drive/Walk <br />Landscaping <br />Paved Street <br />Multi- family (attached) <br />Commercial <br />Historic Basins (exist na conditions. <br />Pro posed Basins (pro posed conditions.) <br />IMP% <br />90 <br />90 <br />5 <br />40 <br />75 <br />95 <br />Land Use (Acres <br />Land Use (Acres <br />Soil Types: <br />Hydrologic Grouping: <br />Runoff Coefficients: <br />Nunn - Urban, 0 -2 % <br />Nunn - Urban, 2 -5 % <br />Type C <br />C = Kc + (.858Y3- .7861^2 +.7741 +.04) <br />Kc(2year) = 0 <br />Kc(5year) = - .10i+.11 <br />Kc(10year) = - .18i+.21 <br />Kc(100year) = - .39i+.46 <br />Weighted Runoff Coefficient <br />Calculated By: GBG <br />Checked By: DJM <br />Date: 1/26/2012 <br />Weighted Runoff Coefficient <br />Total <br />Concrete <br />Paved <br />Basin <br />Area <br />Roof <br />Drive/Walk <br />Landscape <br />Street <br />Multi - family <br />Commercial <br />C2 <br />C5 <br />C10 <br />C100 <br />%Imp <br />EX <br />8.60 <br />0.00 <br />0.00 <br />8.60 <br />0.00 <br />0.00 <br />0.00 <br />0.08 <br />0.18 <br />0.28 <br />0.52 <br />5.0 <br />Weighted Runoff Coefficients <br />WILDCAT MINING CORP. <br />Job Number: 12 -0008 <br />Proposed/ <br />Existing Roof <br />Concrete Drive/Walk <br />Landscaping <br />Paved Street <br />Multi- family (attached) <br />Commercial <br />Historic Basins (exist na conditions. <br />Pro posed Basins (pro posed conditions.) <br />IMP% <br />90 <br />90 <br />5 <br />40 <br />75 <br />95 <br />Land Use (Acres <br />Land Use (Acres <br />Soil Types: <br />Hydrologic Grouping: <br />Runoff Coefficients: <br />Nunn - Urban, 0 -2 % <br />Nunn - Urban, 2 -5 % <br />Type C <br />C = Kc + (.858Y3- .7861^2 +.7741 +.04) <br />Kc(2year) = 0 <br />Kc(5year) = - .10i+.11 <br />Kc(10year) = - .18i+.21 <br />Kc(100year) = - .39i+.46 <br />Weighted Runoff Coefficient <br />Calculated By: GBG <br />Checked By: DJM <br />Date: 1/26/2012 <br />Weighted Runoff Coefficient <br />