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.� GN ' 7J ica�t ttSiHK tv�. ins ae� �eI .�ca� r,a�5 <br /> SA-93-30 <br /> WOOLSEY OIL <br /> RETENTION POND <br /> File 93-150 <br /> 10-1-93 <br /> Existing Pond Capacity: <br /> 12,600.0 ft-3 <br /> JL <br /> Required Pond Capacity: <br /> V - 2 x ( (C x A x R) / 12) <br /> C = 229 , 126 .5 sf (drainage area) <br /> A = 0.75 ( runnoff coefficient ) <br /> R - 1 .39 ( runoff, in inches) <br /> V = 2 x ( (229 , 126 .5 x 0.75 x 1 .39 ) / 12) <br /> = 2 x (238, 864.4 / 12) <br /> 2 x 19 ,905.4 <br /> +• 39 ,810.8 ft-3 <br /> Additional Capacity Needed : <br /> i <br /> V = required - existing <br /> a 39 ,810. 8 - 5 ,600.0 <br /> = 34, 210.8 ft^3 <br /> Proposed Pond Capacity: <br /> pond calculations are based on an 3.5 ' design depth <br /> V C ( ( water surface ft^2 + bottom ft^2 ) / 2 ) x depth I <br /> [ l ( 12,985 ft^2 + 91847.5 ft-2 ) / 2 ) x 3.5 ] <br /> Cl ( 22,832.2 ) / 2 ) x 3.5 1 <br /> 11,416 .3 x -3.5 <br /> 39 ,957. 1 ft-3 <br /> Q <br /> A MO 9 <br /> a <br /> ' 1�/4kr� <br /> 9 P <br /> �C <br />