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i <br /> was backfilled in the entire depth with Portland cement. M <br /> 3.4 Monitoring Well Sampling <br /> On September 2, 1994, the groundwater depths in all wells were measured relative to the <br /> top of the casing using a Solinst water level meter. The relative piezometric levels and <br /> hydraulic gradient were determined from these data (Table 1). <br /> i <br /> TABLE 1 <br /> RELATIVE GROUNDWATER ELEVATIONS <br /> Elkhorn Country Club <br /> 1050 Elkhorn Drive, Stockton, California <br /> Depth to Relative <br /> Relative Groundwater Groundwater <br /> Well No. Casing Elevation = Elevation <br /> 9/2/94 9/2/94 <br /> MW-1 98.76 36.75 62.01 <br /> MW-2 99.12 37.40 61.72 <br /> MW-3 99.05 37.20 61.85 <br /> easurements In feet <br /> After groundwater depths were measured, a two-stage submersible pump was used to purge <br /> standing water from each well. Approximately 6 to 7 gallons of water were removed to <br /> stabilize temperature, pH and conductivity (Appendix B). Stabilization parameters were <br /> measured at one-gallon intervals using an ICM water analyzer. Additional water was then <br /> removed from MW-1 and MW-2 to develop the wells. Due to poor recharge, additional <br /> water could not be removed from MW-3. Purge water was place in 55-gallon DOT drums <br /> and stored on-site. <br /> After stabilization, water samples were collected from each well using a new, disposable <br /> plastic bailer. Samples were collected in 40-m1 EPA vials, placed on ice, and transported to <br /> MAI for analysis. <br /> 3.5 Monitoring Well Surveying <br /> On September 2, 1994, the casing elevations of the three monitoring wells were surveyed <br /> relative to an arbitrary reference point. The relative elevations were then calculated. Casing <br /> elevations for all wells are included in Table 1. <br /> Omlapal Audi.S.Mi .1... [ <br /> E�orn P[2RA60.5ep 199f •7 <br /> I ' <br />