Laserfiche WebLink
11 <br />existing monitoring wells. The pumps are constructed of Teflon and <br />stainless steel and are attached to Teflon air and discharging tubing. <br />The pumps will be certified by the manufacturer to be free of contami- <br />nation. <br />Because these wells are larger diameter (4 inches), EMCON recommends <br />that a Well Wizard pneumatic purge pump be installed in series with <br />each sampling bladder pump. The extra pumps are necessary to allow <br />efficient purging of standing water in the well prior to obtaining <br />ground -water samples. These pump pairs were installed in 4 -inch moni- <br />toring wells at the nearby Harney Lane Sanitary Landfill and were <br />found to be economical and efficient. <br />After the pumps have been installed, the well will be surveyed to <br />determine the ground surface elevation, top -of -casing elevation, and <br />coordinates of each well. This will enable accurate determination of <br />ground -water elevations and hydraulic gradients. <br />An application for a drilling permit will be submitted to the San <br />Joaquin County Local Health District with a detailed work schedule and <br />map showing boring holes, depths, and locations. A valid permit will <br />be obtained prior to beginning any drilling operations. <br />PJ9 9390201.000 13 <br />