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� H. SAND VOLUME <br /> 1. Upsiope Volume+ Volume under rockbed+Downslope Volume Site B <br /> a.Upslope Volume:(depth of clean sand+1)x(upslope berm) x(mound length)I 2=ft3 <br /> 2.9 ft x 13.5 ft x 90.0 ft /2 = 1761.8 ft3 <br /> b.Volume under rockbed: (average depth of sand under rock)x(rockbed width)x(mound length)=ft' <br /> 2.1 ft x 10.0 ft x 90.0 ft = 1890.0 ft3 <br /> c.Downslope Volume: (depth of clean sand+1)x(downslope berm)x(mound length)/2=ft3 <br /> 3.3 ft x 20.5 ft x 90.0 ft / 2 = 3044.3 ft3 <br /> Total cubic feet: = 6696.0 ' ft3 <br /> 2. Divide ft3 by 27 ft'/yd3 to get cubic yards <br /> 6696.0 /27 = 248.0 yds3 <br /> 3. Multiply cubic yards by 1.4 to get weight of sand in tons <br /> 248.0 yds3x 1.4 347.2 tons <br /> 4 Add 10%for Constructability <br /> 347.2 tons x 1.1 = 381.9 tons <br /> A-1 Estimated SeYrage Flows in GPD <br /> No.of <br /> Bdrms C�ass I Class II Class III Class IV <br /> 2 300 225 180 60%of <br /> 3 450 300 218 the <br /> 4 600 375 256 values <br /> 5 750 450 294 in the <br /> 6 900 525 332 Class I, <br /> 7 1050 600 370 II or II <br /> 8 1200 675 408 columns <br /> a33 Abso tion Width Sizin Table <br /> Perc Rate Soil Te�ure Loading Rate Absorption <br /> mpi gpolsq ft Ratio <br /> Coarse sand <br /> <5 Loamy sand 120 1.00 <br /> Med.,Fine sand <br /> 6-15 Sand loam 0.79 1.50 <br /> 16-30 Loam 0.60 2.00 <br /> 31�15 Silt Loam,Silt 0.50 2.40 <br /> 46-60 Clay loam,Silty 0.45 2.67 <br /> or Sand Cla Loam <br /> 61-120 Silty or Sandy <br /> Clay or Clay 0.24 5 <br /> >120' <br /> 'Must be other or performance. <br /> :a �- "�. <br /> � ,_.'��::�'��. <br /> J s:A `e.. L ,. fy .. ""!��a <br /> y f <br /> f;i� <br /> Page 3 of 5 � " � r, <br /> �:� �h � L �_.<� �' �``',� <br /> `�„�' <br />