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G. MOUND SLOPE WIDTH 8 LENGTH(Greater than 1%) <br /> 1. Downslope absorption width=absorption width minus rock layer width <br /> 15 feet - 10 feet= 5 feet <br /> 2. Calculate mound size <br /> UPSLOPE <br /> a.Determine depth of Clean sand at upslope edge of rock layer=3 feet minus distance to restricting layer(C1) <br /> 3 ft� - 2.1 ft= 1 feet � <br /> b.Mound height at the upslope edge of rock layer=depth of clean sand for separaGon(G2a) <br /> at upslope edge plus depth of rock layer(1 foot)to depth of cover(1 foot) <br /> 1 ft+1ft+1 ft= 3 feet <br /> c.Upslope berm mul6plier based on land slope(see figure D-34) <br /> Select berm mul6plier of 2.78 <br /> d.Upslope width=berm multiplier(G2c}times upslope mound height(G2b): <br /> 2.78 x 3 ft = 9.0 feet <br /> DOWNSLOPE <br /> e.Drop in elevation=rock layer width(D2)times percent landslope(C5)!100 <br /> 10 ft x 11 % /100= 1.1 feet <br /> f.Downslope mound height=depth of clean sand for slope difference(G2e) <br /> at downslope rock edge plus the mound height at the upslope edge of rock layer(2b) - <br /> 1.10 ft + 3 ft= 4.1 feet <br /> g.Downslope berm multiplier based on percent land slope(see Figure D-34) 5.8 <br /> h.Downslope width=downslope multiplier(G2g)times downslope mound height(G2fl <br /> 5.8 x 4.1 = 24.0 feet <br /> i.Select greater of G1 and G2h as the downslope width 24.0 feet <br /> j.Total mound width is the sum of upslope(G2d)width plus rock layer width(D2)plus downslope width(G2i) � <br /> 9.0 ft+ 10.0 ft+ 24.0 ft= 43.0 feet <br /> k.Total mound length is the sum of upslope width(G2d)plus rock layer length(D3) <br /> plus upsiope width(G2d) <br /> 9.0 ft + 50.0 ft+ 9.0 ft= 68.0 feet <br /> Final Dimensions (slope>1%) 43.0 ft x 68.0 ft <br /> I hereby certify that I have completed this work in accordance with all applicable ordinances,rules and laws <br /> � "(��J (signature) 810 (license#) ��%� i��date) <br /> Page 2 of 6 <br />