2016-10-25_REVISION - C1981041 - Laserfiche WebLink

Home Browse Search

SL -9 Adjacent Area (Ponds 6 & 10)- LS Factor The LS factor for the Adjacent area is based on an average 4H:1 V Slope and an average change in elevation of 16 feet and average length of slope is 63 feet based on four flow lines located in the adjacent area. The length of slope of run-off from the adjacent area was increased to a length of 192 feet to make it comparable to the pond 6 & 10 area Average Length 192.0 Feet Average Slope 250% Percent Slope (S) 20.0% 250% 30.0% 180 5 500 8 250 11.000 1920 "LS" Factor 8.400 200 6 000 8 500 11 000 Ponds 6 & 10 - LS Factor The LS factor for the pond 6 & 10 Area is based on an average 12H:1 V slope at an average change in elevation of 16 feet based on eight flow lines cut through the area. Average Length 192.0 Feet Average Slope 8.0% Percent Slope (S) 60% 8.0% 100% 180 0.900 1 350 1 800 192.0 "LS" Factor 1.425 200 0 950 1.475 2000 Adjacent Area - North Portal Drainage, G Substation & Pond 13 Areas- LS Factor The LS factor for the Adjacent area is based on an average 5H.1 V Slope and an average change in elevation of 25 feet and average length of slope is 141 feet based on nine flow lines located in the adjacent area. The length of slope of run-off from the adjacent area was increased to a length of 154 feet to make it comparable to the north portal, G Substation and Pond 13 area. Average Length 154.0 Feet Average Slope 18.0% Percent Slope (S) 160% 18.0% 200% 150 3 500 4.250 5 000 154.0 "LS" Factor 4.150 160 3.500 4 000 4.500 North Portal Drainage, G Substation & Pond 13 Areas- LS Factor The LS factor for the Pond 13 area and north portal drainage areas is based on an average 8H:1 V slope at an average change in elevation of 20 feet based on twelve flow lines cut through the area. Average Length 1540 Feet Average Slope 12.0% Percent Slope (S) 100% 120% 12.0% 150 1.600 2.200 2.200 154.0 "LS" Factor 2.20011 160 1.800 2.200 2200 Tab -9, Page 7 Revised 10/18/2016