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1 C. MOUND SLOPE WIDTH & LENGTH Landslope > 1% slope (landslope greater than 1%) 1 1. Downslope absorption width = absorption width (F) ,�irti -°•;°Vta over q''P„� t % i 4b "8e' (i minus rock layer width (D2) ,3 , ; r clean Sand6 , ;, „ 6 TopsoU a',la,r? ft- 10 ft = 1'7 ft __ Upslope dth1G2d) Rock dth(D2) Do�'nalo Widlh(G2) 2. Calculate mound size tl ;�`) tt UPSLOPE MEM a. Depth of clean sand fill at upslope edge of Absorption Width-Sand(f-) rock layer = 3 ft minus the distance to restricting lay r (C1) +.4.-A .,r;, 3 ft- 2,'--t- ft = 1,0 ft b. Mound height at the upslope edge of rock 434: SLOPE MULTIPLIER TABLE layer = depth of clean sand for separation (G2a) Latnd UPSLOPE DOWNSLOPEp at upslope edge plus depth of rock layer (1 ft) Pr' multisloierpe atiosfor arious uiu'tsloperatiosarious plus depth of cover (1 ft) I 3:1 4:1 5:1 6:1 7:1 8:1 3:1 4:1 5:1 6:1 7:1 J, 0 ft + 1ft + lft = 3,0 ft 0 3.0 4.0 5.0 6.0 7.0 8.0 3.0 4.0 5.0 6.0 7.0 c. Upslope berm multiplier based on land slope 1 2.91 3.85 4.76 5.66 6.54 7.41 3.09 4.17 5.26 6.38 7.53 3.12- (see figure D-34) 2 2.83 3.70 4.54 5.36 6.14 6.90 3.19 4.35 5.56 6.82 8.14 2.75 3.57 4.35 5.08 5.79 6.45 3.30 4.54 5.88 7.32 8.86 d. Upslope width = berm multiplier (G2c) times 3 4 2.68 3.45 4.17 4.84 5.46 6.06 3.41 4.76 6.25 7.89 9.72 upslope mound height (G2b): .n. x t l� ft = ft 5 2.61 3.33 4.00 4.62 5.19 5.71 3.53 5.00 6.67 8.57 10.77 DOWNSLOPE 6 2.54 3.23 3.85 4.41 4.93 5.41 3.66 5.26 7.14 9.38 12.07 7 2.48 (3.72 3.70 4.23 4.70 5.13 3.80 0.5.56' 7.69 10.34 13.73 e. Drop in elevation = rock layer width (D2) times 8 2.42 3.03 3.57 4.05 4.49 4.88 3.95 5.88 8.33 11.54 15.91 percent landslope�l (C5) = 00 1 9 2.36 2.94 3.45 3.90 4.30 4.65 4.11 6.25 9.09 13.04 18.92 /0 ft x / // c% = 100 t 1 t 10 2.31 2.86 3.33 3.75 4.12 4.44 4.29 6.67 10.00 15.00 23.33 f. Downslope mound height = depth of clean 11 2.26 2.78 3.23 3.61 3.95 4.26 4.48 7.14 11.11 17.65 30.4' sand for slope difference IG2e) at downslope 12 2.21 2.70 3.12 3.49 3.80 4.08 4.69 7.69 12.50 21.43 43.75 rock edge plus the mouno height at the I upslope edge of rock laye (G2b) ,.ka ft + .2 ft= 0.0 ft g. Downslope berm mult plier based on percent land slop S..<t,- (see figu • D-34) 9 t^ -1 - 0 3'- h. Downslope width = downslope multiplier Upslopg Width(G2d)) (G2g) times downslope mound height (G2f) Lto !! i�,,�f x . ,2 ft = 4. ft 'o Upslo a Width(G2d) Width(D2) /�f Upslope Width(G2d) i. Select the greater of G1 :nd G2h as the _I t a LengUt(D3) 55 downslope width: I ft ti Downslope Width(G2i) t ft ') j. Total mound width is t e sum of upslope Absorption Width(F) t-______.- width (G2d) width plus rock layer widtha� - _.1 (D2) plus downslope widt (G2i) Total Length(G2k) ` ft `)/ ft + /O ft + '' I ft = L-I.Q ft k. Total mound length is tl e sum of upslope width (G2d) plus rock layer length (D3 plus upslope width (G2d) (1 ft + ft + ft = ')3 feet Final Dimensions: 110 X cd 5 '4)) .. I hereby certify that I have completed this work in accordance I ith applicable ordinances, rules and laws. 6/& f`... -- (signature) 3 y' (license#) 9 •-P.4'r?o1c) (date)