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• , !'v7v�2 Lr <br /> F.. ABSORPTION WIDTH Absorption ra6o: � 2 � <br /> . � 1. Absorption width equals absorption ratio times rock layer width <br /> 2.00 x 10.0 ft = 20.0 ft <br /> G. MOUND SLOPE WIDTH&LENGTH(Greater than 1%) <br /> 1. Downslope absorption width=absorption width minus rock layer width <br /> 20.0 feet - 10.0 feet= 10.0 ft <br /> 2. Calculate mound size <br /> UPSLOPE <br /> a.Depth d clean sand at upslope edge of rock layer=3 feet minus distance to restricting layer(C1) <br /> 3.0 ft - 1.5 ft= 1.5 ft <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 /> 1.5 ft+1ft+1 ft= 3.5 ft <br /> c.Upslope berm multiplier based on land slope(see figure D-34) <br /> Selected berm mulfiplier: 3.12 <br /> d.Upslope width=berm multiplier(G2c)times upslope mound height(G2b): <br /> 3.12 x 3.5 ft = 11.0 ft <br /> DOWNSLOPE <br /> e.Drop in elevation=rock layer width(D2)times percent landslope(C5)/100 <br /> 10.0 ft x 7.0 % I 100= 0.7 ft <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 /> 0.7 ft + 3.5 ft= 4.2 ft <br /> g.Downslope beRn multiplier based on percent land slope(see Figure D-34 <br /> Selected bemi mulGplier: 3.80 <br /> h.Downslope width=downslope multiplier(G2g)times downslope mound height(G2fl <br /> 3.80 x 4.2 = 16.0 ft <br /> i.Select greater of G1 and G2h as the downslope width 16.0 ft <br /> j.Total mound width is the sum of upslope(G2d)width plus rock layer width(D2)plus downslope width(G2i) <br /> 11.0 ft+ 10.0 ft+ 16.0 ft= 37.0 ft <br /> k.Total mound length is the sum of upslope width(G2d)plus rock layer length(D3)plus upslope width(G2d) <br /> 11.0 ft + 75.0 ft+ 11.0 ft= 97.0 ft <br /> Final Dimensions (slope>1%) 37.0 ft x 97.0 ft <br /> I hereby certify that all work has been completed in aca�rdance with all applicable ordinances,rules&laws. <br /> '/� (signature) 810 (license#) //'��O�� (date) <br /> / <br /> Page 2 of 5 <br />