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' Determination of the Direction of Groundwater Flow <br /> and <br /> Flow Rate <br /> at the <br /> Pestana Trust Property <br /> 2360 East Street, Tracy, CA <br /> Relative wellhead elevations for the three on-site <br /> groundwater monitoring wells (MW-1 , MW-2 , and MW-3) were <br /> previously determined and reported by Waterworks , Inc of <br /> Escalon. These elevations and depths to groundwater <br /> measured by EPM on August 18 , 1993 were used to determine <br /> groundwater elevations for the fourth quarter of 1993 <br /> Following the most recent repair of damaged wellhead MW-3 , <br /> new wellhead elevations measurements were made on May 2 , <br /> 1994 using a transit and rod (the previous elevation for <br /> MW-1 { 69 . 73 feetf was used as a benchmark) . <br /> The flow of water in a saturated porous medium such as soil <br /> is defined by Darcy' s Law. This law states that under <br /> saturated conditions , the volume of water flowing per unit <br /> area , per unit time (Q/At=v) is directly proportional to <br /> the product of hydraulic conductivity (K) of that soil and <br /> the hydraulic gradient (h/L) ; <br /> v=K h/L <br /> Measurements acquired at the site appear in Table 1 : <br /> Table 1 <br /> Well Head Elevations , Depths to Groundwater, and <br /> Groundwater Elevations at 2360 East Street , Tracy <br /> on May 2 , 1994 <br /> Well Head Depth to Relative Groundwater <br /> Well Elevation Groundwater Elevations <br /> Number ( ft ) (ft ) ( ft ) <br /> ----------------------------------------------------------- <br /> MW-1 69 . 73 7 . 06 62 . 67 <br /> MW-2 69 . 68 6. 76 62 . 92 <br /> MW-3 69 65 6 . 31 63 . 34 <br />