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' Morrison Quarry <br /> Weighted Percent Impervious Calculations <br /> Basin Land Use Area (ac) % Impervious Area x% Imp <br /> ' A Undeveloped 26.19 2.00% 0.52 <br /> Drive -Walk 0.34 90.00% 0.31 <br /> Total 26.53 <br /> ' Base A Weighted%Impervious 3.13% <br /> C Undeveloped 0.45 2.00% 0.01 <br /> ' Gravel- Packed 0.49 40.00% 0.20 <br /> Total 0.94 <br /> Base C Weighted%Impervious 21.81% <br /> ' D Undeveloped 0.37 2.00% 0.01 <br /> Drive-Walk 0.13 90.00% 0.12 <br /> ' Total 0.50 <br /> Base C Weighted% Impervious 24.88% <br /> ' E Undeveloped 3.41 2.00% 0.07 <br /> Gravel - Packed 0.27 40.00% 0.11 <br /> Drive-Walk 1.70 90.00% 1.53 <br /> Total 5.38 <br /> Base C Weighted% Impervious 31.71% <br /> ' L Undeveloped 1.93 2.00% 0.04 <br /> Gravel- Packed 0.49 40.00% 0.20 <br /> Total 2.42 <br /> ' Base C Weighted % Impervious 9.69% <br /> M Undeveloped 9.4 2.00% 0.19 <br /> ' Gravel- Packed 1.09 40.00% 0.44 <br /> Total 10.49 <br /> Base C Weighted%Impervious 5.95% <br /> B Gravel - Packed 0.21 40.00% <br /> F Gravel- Packed 0.27 40.00% <br /> G Gravel- Packed 0.47 40.00% <br /> H Gravel- Packed 0.42 40.00% <br /> 1 Gravel- Packed 0.45 40.00% <br /> ' J Gravel- Packed 0.39 40.00% <br /> K Gravel- Packed 0.33 40.00% <br />