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. F. ABSORPTION WIDTH Absorption ratio: 2 1. Absorption width equals absorption ratio times rock layer width Site B 2.00 x 10.0 ft = 20.0 ft G. MOUND SLOPE WIDTH 8�LENGTH(Greater than 1%) 1. Downslope absorption width=absorption width minus rock layer width 20.0 feet - 10.0 feet= 10.0 ft 2. Calculate mound size UPSLOPE a.Depth of clean sand at upslope edge of rock layer=3 feet minus distance to restricting layer(C1) 3.0 ft - 1.1 ft= 1.9 ft b.Mound height at the upslope edge of rock layer=depth of clean sand for separation(G2a) at upslope edge plus depth of rock layer(1 foot)to depth of cover(1 foot) 1.9 ft+1ft+1 ft= 3.9 ft c.Upslope berm mu�tiplier based on land slope(see figure D-34) Selected berm multiplier: 3.45 d.Upsiope width=berm multiplier(G2c)times upsiope mound height(G2b): 3.45 x 3.9 ft = 13.5 ft DOWNSLOPE e.Drop in elevation=rock layer width(D2)times percent landslope(C5)I 100 10.0 ft x 4.0 % I 100= 0.4 ft f.Downslope mound height=depth of clean sand for slope difference(G2e) at downslope rock edge plus the mound height at the upslope edge of rock layer(2b) 0.4 ft + 3.9 ft= 4.3 ft g.Downslope berm muitiplier based on percent land slope(see Figure D-34 Selected berm multiplier: 4.76 h.Downslope width=downslope multiplier(G2g)times downslope mound height(G2fl 4.76 x 4.3 = 20.5 ft i.Select greater of G1 and G2h as the downslope width 20.5 ft j.Totai mound width is the sum of upslope(G2d)width plus rock layer width(D2)plus downslope width(G2i) 13.5 ft+ 10.0 ft+ 20.5 ft= 44.0 ft k.Total mound length is the sum of upslope width(G2d)plus rock layer length(D3)plus upslope width(G2d) 13.5 ft + 63.0 ft+ 13.5 ft= 90.0 ft Final Dimensions (slope>1%) 44.0 ft x 90.0 ft I hereby certify that all work has been completed in accordance with all applicable ordinances,rules&laws. (signature) 81U (license#) 12/1912006 (date) ., r"- '`„�3f �a:� � � Y � ,. ;� ,-p7v£y,,nr Page 2 of 5 �'� � . ,_ .. .'�... �� K� �,,� ��'� i:>;