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in each of the wells with a clean disposable bailer and slowly transferred to laboratory-cleaned <br /> sample containers. <br /> Water Sample Labeling and Handling <br /> Water samples are preserved in laboratory-cleaned, 40-milliliter glass vials that contain <br /> concentrated hydrochloric acid as a preservative. The water samples are sealed with screw <br /> caps with Teflon septa to eliminate air bubbles. The sample containers are labeled in the field <br /> with the site identification, monitoring well number and depth, and date, and promptly placed <br /> in iced storage for transport to the laboratory. The technician or geologist initiats Chain of <br /> Custody Records in the field that accompany the samples to a laboratory certified by the State <br /> of California for the analyses requested. Samples are transported to the laboratory promptly. <br /> Samples in our custody are properly disposed of after their useful life had expired. <br /> Reporting Results of Analyses <br /> Hydrocarbon constituents in groundwater samples are reported by the laboratory in units of <br /> parts per billion (ppb). The maximum contaminant levels listed in Title 22 of the California <br /> Code of Regulations for benzene, ethylbenzene, and total xylene isomers in drinking water are <br /> 1.0, 680, and 1,750 ppb, respectively. The action level established by the California <br /> Department of Health Services for toluene is 100 ppb. To conform with the laboratory <br /> reports, groundwater chemical data are reported in units of ppb. <br /> S <br /> SHELLSTPROCED <br />