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G. MOUND SLOPE WIDTH & LENGTH Landslope > 1% slope (landslop.e greater than 1%) •I rr m '.r,a'ri' .k.1,...ii":-^ t 714 off^:V� t� r;�r 1. Downslope absorption width= absorption width (F) • ,',$5�h 1'�;�� ea: �;j a. minus rock layer width (D2) ._ .,'•" i^=z - ` ,;r„ 6"Topsoil a(a . 9 ft- 1 0 ft= ) / ft Separation I.0 Rle , .+. �e W{d 11 RNtr4AY.s taro II.^_ U 't 1 in(Wd) Rock LSj NC)d th(D2) Downstoridt(C3U 2. Calculate mound size S UPSLOPE . • a. Depth of clean sand fill at upslope edge of ^, ,v„br,„-be„d(r, t rock layer = 3 ft minus the distance to restricting layer (Cl) 3 y aft - ) . o ft= a •D ft b. Mound height at the upslope edge of rock D•34: SLOPE MULTIPLIER TABLE layer = depth of clean sand for separation (G2a) . Land UPSLOPE DOWNSLOPE Slo e, multipllen for various multi liera for various at upslope edge plus depth of rock layer (1 ft) slope ratios aPope ratio. plus depth of cover (1 ft) 311 4a 51 61 71 • 81 31 4i1 51 61 71 a.0 ft + 1ft+ 1ft = (-1 .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 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 a,P1 4 (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 1. Upslope width = berm multiplier (G2c) times 3 275 3.57 4.35 5.08 5.79 6.45 3.30 4.54 5.88 7.32 8.86 1 p S10 e mound hei ht (G2b): 4 2.68 3.45 4.17 4.84 5.46 6.06 3.41 4.76 6.25 7.89 9.T1 p $ S 2.61 3.33 4.00 4.62 5.19 5.71 3.53 5.00 6.67 8.57 10.77 . Ll X 4.0 ft = i l ft 6 2.54 3.23 3.85 4.41 4.93 5.41 3.66 5.26 7.14 9.38 12.07 )01ATNSLOPE 7 2.48 3.12 3.70 4.23 4.70 5.13 3.80 5.56 7.69 10.34 13.73 :. 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 )ercent landslope (C5) + 100 9 2.36 94 3.45 3.90 4.30 4.65 OP a) 9.09 13.04 18.92 1(-) ft x 9 % + 100 = • , `7 ft 10 2.31 2.86 3.33 3.75 4.12 4.44 4.29 6.67 10.00 15.00 23.33 . 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 30.43 .and for slope difference (G2e) 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 ock edge plus the mound height at the 1pslope edge of rock layer (G2b) LI.0 ft + , g ft= Li et, ft • . ;. Downslope berm multiplier based on percent land slop • - ( - illLI 1 (see figure D-34) y .. Downslope width = downslope multiplier U >. p.lop. yldth(G fd) 22g) times downslope mound height(G2f) yt, 1-1, 11 X 4 ic7 ft= -v,_0 ft 5'v-a.S i Upsyrrdth(C2d). Rock bed the) >O + UP lgpe fF idtt,(G2d) Select the greater of G1 and G2h as the • t _ g / ownslop e width: as - ft „ ` a dbownslope Width(G2i) as ft • Total mound width is the sum of upslope I • Absorption Width(P) )� .• / ridth (G2d) width plus rock layer width D2) plus downslope width (G2i) Total Length(C2k) 11 -2- ft / 1 ft + /o ft+ as ft= '9(a ft . Total mound length is the sum of upslope width (G2d) lus rock layer length (D3) plus upslope width (G2d) / ) ft + h Z ft +, t J ft = 5s.4 feet a A. t,Z t a s / / Z Final Dimensions: • i+c, • x 4 'Au- , hereby certify that I have completed this work in accordance with applicable ordinances, rules and laws. _1t.i- -(74, �j .(sigl•tature) ^39 y • (license#) `i-/c,-0 3 (date)