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FIELD PROCEDURES <br /> Ground Water Measuring, Purging. and Sampling <br /> The water level in each well was measured with an electronic water level indicator The wells <br /> were checked for free product with a clean, teflon bailer prior to purging and sampling When <br /> free product was not observed, ground water from monitoring wells MW4 through MW7 was <br /> purged with a 2-inch diameter submersible pump Due to mechanical problems with the <br /> submersible pump, monitoring wells MW1 through MW3 were purged using a clean, teflon <br /> bailer Purging of the wells included the removal of approximately three well volumes of water <br /> from each well Ground water samples were then collected with new polyethylene disposable <br /> bailers and decanted into appropriate sampling containers provided by the analytical laboratory <br /> The samples were immediately placed in an ice chest containing ice Samples were transported <br /> under chain-of-custody documentation to a California Department of Health Services-certified <br /> laboratory for analysis of Total Petroleum Hydrocarbons (TPH) as gasoline and diesel using <br /> modified EPA method 8015 and Benzene, Toluene, Ethylbenzene, and Total Xylenes using EPA <br /> method 8020 <br /> The purging equipment was cleaned with a solution of liquinox detergent and water between each <br /> well to minimize the potential for cross-contamination All water removed during purging <br /> operations was placed in sealed, labeled 55-gallon drums and stored on-site <br /> i <br /> WALLACE•KUHL <br /> Recycled paper &ASSOCIATES INC <br />