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' G. DOWNSLOPE BERM WIDTH (Slope > 1%) <br /> �. Slope: 8.0 If landslope +s 1% or more, subtract rock layer width from <br /> adsorption width to obtain minimum downslope berm toe: <br /> 24.0 ft minus 10.0 ft rock = 14.0 Foot minimum adsorption area <br /> 2. Calculate minimum mound size: <br /> a. De#ermine depth of clean sand at upslope edge ofi rock layer: <br /> From Site Evafuation step C1: 16.0 inches clean sand <br /> b. Add dep4h of clean sand (2a� at upslope edge, plus 1 foot of rock plus 1 foot <br /> of cover to get mound height at upstope edge or rock layer. <br /> 18.0 in / 12 = 1.50 feet+ 1ft + 1ft = 3.50 feet upslope height <br /> c. Enter table with landslope to get uplsope berm multiplier of 3.03 <br /> d. Multiply berm multiplier 2c by upslope mou�d height 2b to get uplope berm widtfi: <br /> 3.03 X 3.50 equals 14.6 feet upsiope berm width <br /> e. Multiply rock layer width D2 by landslope to get drop in e�evation: <br /> 10.00 feet X 8.0 %slope = 80.00 / 100 = 0.80 feet <br /> f. Add depth of clean sand for slope difference 2e at downslope edge, to th� <br /> mound height at the upsiope edge af rock iayer 2b to find downslope height: <br /> 3.50 feet + 0.80 feet = 4.30 feet downslope height <br /> g. Enter table with landstope and downsfope berm muiiipiier of: �.88 <br /> h. Multip{y berm multiplier by dawnslope mound height to get downslope berm width: <br /> 5.88 feet X 4.30 equals 25.3 feet downslope beRrr width <br /> i. Compare vaiues of step G1 14.0 ft & G2h 25.3 ft <br /> The greater of the two values 25.3 is the downslope berm width <br /> j. Total mound width is the surn of ups0ape berm width G2d, plus rock layer width <br /> D2, plus downslope berm width G2i: <br /> 1 Q.fi feet + 10.0 feet + 25.3 feet = 45.9 R wide <br /> k. Total mound length is the sum of uplsope bermwidth G2d, plus rock layer length <br /> D3, plus upslope berm width G2d: <br /> 10.6 feet + 49.8 feet + 10.6 feet = 71.0 ft long <br /> i. FINAL MOUND DlMENS14N IS: 45.9 f�wide X 71.0 ft tong <br /> % SLOPE OPE MULTIPUER PSLOPE MULTiPLIER <br /> 3TO1 1TO1 3TO1 4TO1 <br /> 3.00 4.00 3.00 4.00 <br /> 1.0 3.09 4.17 2.91 3.85 <br /> 2.0 3.19 4,35 2.83 3.70 <br /> 3.0 3.30 4.54 2.75 3.57 <br /> 4.0 3.41 4.76 2.68 3.45 <br /> 5.0 3.53 5.00 2.61 3.33 <br /> 6.0 3.96 5.26 2.54 3.23 <br /> 7.0 3.80 5.56 2.48 3.12 <br /> 8.0 3.95 5.88 242 3.03 <br /> S.o a.11 6.25 2.38 2.84 <br /> 10.0 4.29 8.67 2.31 2,88 <br /> 11.0 4.48 7.14 2.26 2.78 <br /> 12.0 4.W J'.89 2.21 2.70 <br /> PAGE 5 OF 12 <br />