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SL -9 <br />Adjacent Area (Ponds 6 & 10)- LS Factor <br />The LS factor for the Adjacent area is based on an average 4H:1 V Slope and an average <br />change in elevation of 16 feet and average length of slope is 63 feet based on four flow lines located in the <br />adjacent area. The length of slope of run-off from the adjacent area was increased to a length of 192 feet <br />to make it comparable to the pond 6 & 10 area. <br />Average Length 192.0 Feet <br />Average Slope 25.0% <br />Percent Slope (S) <br />20.0% 25.0% 30.0% <br />180 5.500 8.250 11.000 <br />192.0 "LS" Factor 8.400 <br />200 6.000 8.500 11.000 <br />Ponds 6 & 10 - LS Factor <br />The LS factor for the pond 6 & 10 Area is based on an average 12H:1 V slope at an <br />average change in elevation of 16 feet based on eight flow lines cut through the area. <br />Average Length 192.0 Feet <br />Average Slope 8.0% <br />Percent Slope (S) <br />6.0% 8.0% 10.0% <br />180 0.900 1.350 1.800 <br />192.0 "LS" Factor 1.425 <br />200 0.950 1.475 2.000 <br />Adjacent Area - North Portal Drainage, G Substation & Pond 13 Areas- LS Factor <br />The LS factor for the Adjacent area is based on an average 5H:1 V Slope and an average <br />change in elevation of 25 feet and average length of slope is 141 feet based on nine flow lines located in the <br />adjacent area. The length of slope of run-off from the adjacent area was increased to a length of 154 feet <br />to make it comparable to the north portal, G Substation and Pond 13 area. <br />Average Length 154.0 Feet <br />Average Slope 18.0% <br />Percent Slope (S) <br />16.0% 18.0% 20.0% <br />North Portal Drainage, G Substation & Pond 13 Areas- LS Factor <br />The LS factor for the Pond 13 area and north portal drainage areas is based on an average 8H:1 V slope <br />at an average change in elevation of 20 feet based on twelve flow lines cut through the area. <br />Average Length 154.0 Feet <br />Average Slope 12.0% <br />Percent Slope (S) <br />10.0% <br />12.0% <br />12.0% <br />150 <br />3.500 4.250 <br />5.000 <br />154.0 <br />"LS" Factor 4.150 <br />2.200 <br />160 <br />3.500 4.000 <br />4.500 <br />Average Length 154.0 Feet <br />Average Slope 12.0% <br />Percent Slope (S) <br />10.0% <br />12.0% <br />12.0% <br />150 <br />1.600 <br />2.200 <br />2.200 <br />154.0 <br />"LS" Factor <br />2.200 <br />160 <br />1.800 2.200 2.200 <br />Tab -9, Page 7 <br />Revised 10/18/2016 <br />