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4. APPROXIMATE VOLUME CALCULATIONS: <br /> If rock rs used as the discribution medr4: <br /> A. Rock Area =Absorption Bed Length (1.F) X (Additional rock upslope of tateral+Absorption eed Width (1.E) <br /> 125.0_� ft X ( ft X 12.0 ft) = C 1500.0 ftZ <br /> B. Rock Votume in Cubic Feet = Rock Area (4.A) by Depth of Media (Rock) (1 foot) and divide by 2. <br /> 1500.0 ft2 X 1 ft = 2 = 750.0 ft3 <br /> C. Rock Votume in Cubic Yards = V�(ume rn Cubic Feet (4.B) divided by 27 <br /> 750.0 ft3 : 27 - 27•8 yd3 <br /> D. Add 20%for constructability: 27.8 yd3 x 1.2 = � 33.3 yd' <br /> E. Loomy or Sandy Loam Cover Materio( Votume: <br /> Votume in Cubic Feet= System Width (2.J)X System Lenyth (2.K)X 1.5 :2, minus rock vo(ume (4.B) <br /> 18.7 ft X 141.0 ft X 1.5 : 2 - �750.0 ft3 = �1227.5 <br /> F. Loamy or Sandy Loam Caver Volume in Cubic Yords = Volume in Cubic Feet (4.E) divided by 27 <br /> 1227.5 ft3 = 27 = 45.5 yd3 <br /> G. Add 209�for constructabitity: 45.5 yd3 X 1.2 = 54.6 yd3 <br /> H. Topsoil Volume in Cubic�eet= System width (2.J) X System Length (2.K) x 0.5 <br /> 18.7 ft X 141.0 ft X 0.5 = 1318.4 ft3 <br /> I. Topsoit Volume in Cubit Yards = Votume in Cubic Feet (4.H)divided by 27 <br /> 1318.4�ft3 : 27 = 48.8 y�3 <br /> J. Add 20%for constructabitity: 48.8 ]yd3 x 1.2 = 58.6 yd3 <br /> 5. Comments: <br /> �' <br />