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y <br /> n <br /> 4 t <br /> KLEINFEL.DER <br /> MONIT01URG WELL DEVELOPMENT AND SAMPLING <br /> Upon completing the installation of MW-4, a bailed sample was collected <br /> from the well and visually inspected for a product layer or sheen. No <br /> product layer, sheen or hydrocarbon odor was observed in the bailed <br /> sample. <br /> The well was then developed with a surge block, airlift, development <br /> tool. Surging with the tool along the screened interval was performed to <br /> draw the sediment into the well and set the sand pack. The=s-ed-iment--laden, <br /> water—waste airlifted-from the, well at a rate of approximately 1 gallon per <br /> minute. Development continued until the discharge water was relatively <br /> free of fines. The well had an approximate volume of 3.1 gallons. <br /> Approximately 17 well volumes or 55 gallons were removed from the well. <br /> A bailed ground water sample (28542) was collected in a liter bottle and <br /> three 40 milliliter VOAs. The sample bottles were immediately sealed, <br /> labeled, and placed in an iced cooler for temporary storage. A purge <br /> characterization and sample log data sheet is included in Attachment B. <br /> WATER SAMPLE ANALYSES AND RESULTS <br /> Water sample 28542 collected from MW-4 was delivered under <br /> chain-of-custody to Chemwest Analytical Laboratories, Inc. , . in Sacramento <br /> and analyzed for total petroleum hydrocarbons extractable by GC-FID and <br /> volatile aromatic compounds (benzene, toluene, ethylbenzene, xylene, <br /> {BTXE) ) by EPA Method 602. <br /> The results of. the laboratory analyses indicate low levels of petroleum <br /> hydrocarbons are present in the water sample, and are summarized as <br /> follows: <br /> 101-88-604 2 <br />