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G. MOUND SLOPE WIDTH &LENGTH Landslope > 1% slope (landslope greater than 1%) !. , .m 1. Downslope absorption width= absorption width (F) P`�. ^tea x N 7.a .minus rock layer width (D2) an sand�-ft? xlt. 4"Topsoil ��•_ ,�a y r � Z a‘...r) ft- /D ft= ) 0 ft =ErSal ' - 4Leill1.011' j m' ' ' --''. Raserkting Layer �t d) Rock, :dtkf D2) 1=1=2111 2. Calculate mound size UPSLOPE Mill a. Depth of clean sand fill at upslope edge of Atsler ft_sNdal rock layer = 3 ft minus the distance to restricting layer (Cl) 3ft- /.4d ft= 1. ft b. Mound height at the upslope edge of rock D-34: SLOPE MULTIPLIER TABLE '.ayer= depth of clean sand for separation (G2a) Lartd UPSLOPE DOWNSLOPE Slo multipliers for various multi liers for various 1c upslope edge plus depth of rock layer (1 ft) ince slope ratios multipliers flus depth of cover (1 ft) 3:1 4:1 5:1 6:1 7:1 8:1 3:1 4:1 5:1 6:1 7:1 , ). . ft + ift+ ift= 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 7.41 349 4.17 5.26 6.38 7.53 -1,10.." (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 2'75 3.57 4.35 5.08 5.79 6.45 3.30 4.54 5.88 7.32 8.86 ipslope mound height(G2b): 4 2.68 3.45 4.17 4.84 5.46 6.06 3.41 4.76 6.25 7.89 9.72 5 2.61 3.33 4.00 4.62 5.19 5.71 3.53 5.00 6.67 8.57 10.77 .0'S X 3•Z- ft = /b ft 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 3.12 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 ® 3.57 4.05 4.49 4.88 3.95 110 8.33 11.54 15.91 iercent 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 o ft x IS %+ 100= . 25 ft l 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 dean 11 2.26 2.78 , 3.23 3.61 3.95 4.26 4.48 7.14 11.11 17.65 30.43 Ind 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 C -k edge plus the mound height at the 3lope edge of rock layer (G2b) ? 2 ft+ , '1 ft= 9.0 ft , -. Downslope berm multiplier based on percent land slop �•cds‘ (see figure D-34) '" OS'- . Downslope width = downslope multiplier Upslor Width(G fd) G2g) times downslope mound height(G2f) Lt J•g" x 4.0 '` _ Upslope Width(G2d) Rock Bed /" Upslope fWidth(G2d) Select the greater of Gi and G2h as the 1 -.1n f` l..r,gtin(»�' • l� M ownslope width: a.`) ft (Downslope Width(G21) a•t') ft Total mound width is the sum of upslope Absorption Width(F) )7 Jidth (G2d) width plus rock layer width .',y)_ 1I ..."--.........____, D2)plus downslope width (G2i) ,ow Length(G2k) 10 3 ft )o ft+ )o ft+ a I ft= 4'4 ft . Total mound length is the sum of upslope width(G2d) lus rock layer length (D3) plus upslope width (G2d) )n ft+ 5.5 ft+ lo ft= 1Sfeet `.) 4- S5- } w`' )03 Final Dimensions: 44 X 4(°2 'Ani ` hereby certify that I have completed this work in accordance with applicable ordinances, rules and laws. ,- (signature) 3')y (license#) 41-9-0 ) (date)