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k%j KLEINFELDER <br /> 3.1.4 MONITORING WELL DEVELOPMENT AND SAMPLING <br /> The three wells were developed on November 8, 1988. Water level measurements were <br /> collected from each well prior to initiating the development. Each well was first sampled <br /> with a clear acrylic bailer to visually inspect for a product layer or sheen. No product layer, <br /> sheen, or hydrocarbon odor were observed on the water samples bailed from the <br /> monitoring wells. The wells were developed with a bailer by surging along the screened <br /> interval to draw the sediment into the well and set the sand pack. The sediment laden <br /> water was removed from the well using a bailer or centrifugal pump. Development <br /> continued until the discharge water was relatively free of fines. Approximately 7 gallons <br /> were removed from MW-1 because of the slow recharge rate. Approximately 31 gallons <br /> were removed from MW-2 and 18 gallons from MW-3. <br /> On November 11, 1988, the three wells were purged and sampled. Water level <br /> measurements were collected from all three wells prior to purging and sampling. An <br /> acrylic bailer was used to visually inspect for a product layer or sheen. No product layer, <br /> sheen, or hydrocarbon odor were observed in the bailed sample from each well. Each well <br /> was purged with a Teflon bailer. While purging, field parameters (pH, conductivity, and <br /> temperature) were monitored. After the field parameters appeared to stabilize and <br /> approximately 4 to 7 well volumes were purged from each well, a representative ground <br /> water sample was collected in a liter bottle and two milliliter VOAs. The sample bottles <br /> were immediately sealed, labeled, and placed in an iced cooler for temporary storage. <br /> Sample 29042 was collected from MW-1, Sample 29043 from MW-2, and Sample 29041 <br /> from MW-3. Monitoring well development and purge data sheets are included in <br /> Appendix B. <br /> All development and sampling equipment was steam cleaned and/or washed in a trisodium <br /> phosphate solution and distilled water rinse prior to use in each well. Water Sample 29044 <br /> is an equipment blank collected from the decontaminated equipment. The equipment <br /> blank was not analyzed by the laboratory. All water generated during the well <br /> development and sampling was containerized, labeled, and stored onsite. <br /> 3.1.5 MONITORING WELL ELEVATION SURVEY <br /> On November 11, 1988, the relative elevations of the tops of the 2-inch PVC casings were <br /> surveyed by Associated Land Consultants, LS4268. The casing elevations for the three <br /> 161-89-107 7 <br />