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G. Downslope Berrn DJidth 1. If the landslope is 1% or more, subtract the rock layer width from the a�bsorption width to abtain minirnum downslope berm tce: 27- 10 = 17 feet m�nimum dowr�slope. 2. Catculat�the mftimum mound size: a. Determine the depth of clean fi}1 at the upsEope edge of the rock layer: (required seperation) 3' - l.5' = 1.5 feet b. Add the dep�h of clean sand for 2a, the depth of the rock layer, and 1' for the topsoil cover needed to determine the mound height at the upslope edge of the rock layer; 1.5 + 1 +1 = 3.5 c. Select the table multiplier for the upslope berm based on land slope against 4:1 berm slope. 3.33 d. Multiply the berm multiplier by the upslope maund height to determine the upsiope width; 3.Sx3.33 = 12feet e. Multiply t�e rock layer width by the landslope to determine the elevation drop; (10x5)/ 100 = .Sfeet f. Add the depth 2e to 2b to determine the mound height at the downslope edge of the rock layer; .S + 3.5 =4. Feet g. S�lect the table multiplier for the downslope berm based on the land slape again�t 4:1 berm slope. 5.0 h. Multiply the berm multiplier for the downslope mound height to determine the downslope width; � DownsSope Upslope 4. x 5. = 20 feet slope berm multipliers bercn multipliers i. Comna�re the values in G.1 �% for given ratios for given ratios (17 feet) and step G.2h(20 feet). _ Select the greater of the two values 4:t 5:1 4:1 5:1 as the downslope berm width; 20 feet. o a.00 s.00 a.00 S.00 j. Total mound width is the sum t 4.17 5.26 3.85 4.7b of G.2d, D.2 and G.2i; 12 + 10 + 20 = 42 feet. 2 4.35 5.56 3.70 4.54 k. Total mound length is the sum 3 4.54 5.88 3.57 4.35 of G.2d, D.3, and G.2d ; a 4.76 b.2s 3.45 a.�� 12 + 50 + 12 = 74 feet 5 5.00 6.6T 3.33 4.00 6 526 7.t4 3.23 3.85 Final Dimensions of the Mound � s.sb 7.69 3.�z 3.�0 42 feet bv 74 feet g 5.88 8.33 3.03 3.57 4 6.25 9.09 2.94 3.45 10 6.67 10.00 2.86 3.33 11 7.14 l I.l l 2.78 3.23