Laserfiche WebLink
i <br /> 14 November 2014 2014 <br /> AGE Project No . 07- 1529 <br /> Page 2 of 2 <br /> • Seepage velocity (groundwater velocity) was calculated using the following <br /> formula : <br /> VS = V/n <br /> V = Darcy velocity <br /> n : porosity of silt (30% or 0 . 3) <br /> Calculations for rate of flow (seepage velocity) through shallow zone aquifer: <br /> 1 : Cross-sectional area : A= 16 . 5 ft( 150) ( 155 ft) <br /> A = 383 , 625 ftz <br /> 2 : Hydraulic gradient : A = 0 . 0005 ft/ft <br /> 3 : Rate of flow for hydraulic conductivity = 1 gpd/ft2 <br /> Q = (K) (i ) A <br /> Q = 1 gpd/ft2(0 . 0005 ft/ft) (383 , 625 ft2) <br /> Q = 191 ft3/day <br /> 4 : Darcy velocity : V = Q/A <br /> V = 191ft3/day/383 , 625 ft2 <br /> V = 0 . 0005 ft/day <br /> 5 : Seepage velocity : Vs = V/n <br /> VS = 0 . 0005/0 . 3 <br /> Vs = ® . 0016 May <br />