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' .MOUND SLOPE WIDTH &LENGTH Landslope> 1% slope (landslope greater than 1%) ,�, Downslope absorption width = absorption width (F) 4,r''.y `; " y , ;, w nus rock layer width (/D�2 ,_ ,,,-`,1,,,4.7 - ,�' 6 Topsoil lL ) -�� ,,;;e� ,(n '�','lfr�'al✓i:nr n”1 Gena Sand h Opt Ch., •,f'�'��{ln h••?. to. ft- /c1 ft= 1 ? ft ......L., � r, ,,., _,-•- �r 1111 UpsbptW1dt 1(C1d) Rock:dth'D2) DewnsIo11)ftdt(C2I) ill Calculate mound size ' 'SLOPE ' Depth of clean sand fill at upslope edge of Absorptl widSand(F) :k layer = 3 ft minus the distance to restricting layer (Cl) �� ttth t- "2:4- ft= J-o ft Mound height at the upslope edge of rock D-34: SLOPE MULTIPLIER TABLE ser = depth of clean sand for separation (G2a) Land UPSLOPE DOWNSLOPE Slo e, multiplier.for various multiplien for various .ipslope edge plus depth of rock layer(1 ft) is i. .lova ratio. slope ratios is depth of cover (1 ft) 3:1 41 51 6:1 7:1 • 8:1 3:1 4:1 5:1 6:1 7:1 1. O ft + lft + 1ft = 3-a 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 D,ctSlo (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 3 2.75 3.57 4.35 5.08 5.79 6.45 3.30 4.54 5.88 7.32 8.86 Upslope width = berm multiplier (G2c) times 4 2.68 3.45 4.17 4.84 5.46 6.06 3.41 4.76 6.25 7.89 9.7't ;lope mound height (G2b): 5 2.61 3.33 4.00 4.62 5.19 5.71 3.53 5.00 6.67 8.57 10.77 •V(a X Z •0 ft = 9 ft 6 2.54 3.23 3.85 4.41 4.93 5.41 3.66 5.26 7.14 9.38 12.07 )WNSLOPE 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 ,357 4.05 4.19 4.88 3.95 5.88 8.33 11.54 15.91 'cent landslope (C5) + 100 9 2.36 2.94 3.45 3.90 4.30 4.65 4.11 6.25 9.09 13.04 18.92 10 ft x / C % + 100 = '110 ft 10 2.31 433. 3.33 3.75 4.12 4.44 4.29 10.00 15.00 23.33 >ownslope 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 .d 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 k edge plus the mound height at the ;lope edge of rock layer (G2b) • !•O ft + I/O ft= 4, D ft Downslope berm multiplier based on percent land slop (o.(o r7 (see figure D-34) ? 3 • Downslope width = downslope multiplier Up.lop.Width(Gfd) ca g) times downslope mound height(G2f) y� ( / X 1 t ft = l ftUpsl • Rock Bed iv U gPlo Pa (G2d) ope Wldth(G2d) Width elect the greater of Gi and G2h as the 7. ®f Length(D3) `{ vnslope width: a 7 ft1-15 n ' rpownelope WIdth(G21).:22 _ft 'otal mound width is the sum of upslope i Absorption Wtdeh(F) I 7 ith (G2d) width plus rock layer width .. _ - f ,) plus downslope width (G2i) Total Length(G2k) ft 9 ft + /0 ft + a7 ft= 4-la ft Total mound length is the sum of upslope width (G2d) s rock layer length (D3) plus upslope width (G2d) I_ ft + 5 S ft + ft = 'i.3 feet --, + s s -E- a io o) • Final Dimensions: >reby certify tthat_atI have completed this work in accordance with applicable ordinances, rules and laws. � Cr ' ( � (signature) w"1 (license#) I L -- D2 -d Z- (date)