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I ' ti ,�� ��rE <br /> G. MOUND SLOPE WIDTH 8�LENGTH (Greater than 1°/a) <br /> 1. Downslope absorption width =absorption width minus rock layer width <br /> 20 feet - 10 feet= 10 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 - 2.5 ft= 1 feet <br /> b. Mound height at the upslope edge of rock layer=depth of clean sand for separation(G2a) <br /> at upslope edge plus depth of rock layer(1 foot)to depth of cover(1 foot) <br /> 1 ft+ 1 ft+ 1 ft= 3 feet <br /> c. Upslope berm multiplier based on land slope(see figure D-34) <br /> Select berm multiplier of 2.86 <br /> d. Upslope width=berm multiplier(G2c)times upslope mound height(G2b): <br /> 2.86 x 3 ft = 9.0 feet <br /> DOWNSLOPE <br /> e. Drop in elevation=rock layer width(D2)times peroent landslope(C5)f 100 <br /> 10 ft x 10 % /100= 1.0 feet <br /> f. Dovmslope mound height=depth of clean sand for slope difference(G2e) <br /> at dovmslope rodc edge plus the mound height at the upslope edge of rodc layer(2b) <br /> 1.00 ft + 3 ft= 4.0 feet <br /> g. Downslope berm multiplier based on percent land slope(see Figure D-34) 6.67 <br /> h. Downslope width=downslope multiplier(G2g)times dovmslope mound height(G2f} <br /> 6.67 x 4.0 = 26.0 feet <br /> i. Select greater of G1 and G2h as the downslope width 26.0 feet <br /> j.Total mound width is the sum of upslope(GZd)width plus rock layer width(D2)plus downslope width(G2i) <br /> 9.0 ft+ 10.0 ft+ 26.0 ft= 45.0 feet <br /> k. Total mound length is the sum of upslope width(G2d)plus rock layer length(D3) <br /> plus upslope width(G2d) <br /> 9.0 ft + 62.0 ft+ 9.0 ft= 80.0 feet <br /> Final Dimensions (slope>1°�) 45.0 ft x 80.0 ft <br /> I hereby certify that I have completed this work in accordance with all applicable ordinances,rules and laws <br /> � <br /> �T/` (signature) 810 (license#) /C' �/�� (date) <br /> ' � P e2of6 <br />