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June 7, 1988 AGS Job No. 038033-1 <br /> Marlowe Properties, Stockton, California <br /> perforated casing with 0.020-inch-wide slots. The well screen <br /> will extend from the total depth of the well to approximately 10 <br /> feet above the ground-water surface. This interval will allow <br /> sampling of the air/water interface during seasonal fluctuations <br /> E of the ground-water level. <br /> The well annulus will be packed with sorted sand to approximately <br /> 2 feet above the slotted interval of the casing. A 1- to 2-foot- <br /> thick bentonite plug will be placed above the sand as a seal <br /> against cement entering the sand pack. The remaining annulus will <br /> be backfilled with neat cement to the ground surface. <br /> The monitoring well will be protected with a cast-aluminum utility <br /> �.; box equipped with a PVC skirt. The box has a water-tight seal to <br /> protect against surface water infiltration and requires a <br /> specially designed wrench to open. This reduces the possibility <br /> of either vandalism to or accidental disturbance of the well. <br /> F <br /> Water samples will.be collected for subjective analysis prior to <br /> purging and development of the monitoring well. The samples will <br /> be collected from the water surface in the well with a Teflon <br /> bailer cleaned with Alconex and deionixed water. Any subjective <br /> .�4ppl ed GeaSystems <br />