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h <br /> • <br /> Water_Sample Labeling and Handling <br /> Water samples are preserved in laboratory-cleaned containers which contain appropriate <br /> preservatives The water samples are sealed with screw caps with Teflon septa to eliminate aur <br /> bubbles The sample containers are labeled in the field with the site identification, monitoring <br /> well number and depth, and date, and promptly placed in iced storage for transport to the <br /> laboratory The technician or geologist initiates Chain of Custody Records in the field that <br /> accompany the samples to a laboratory certified by the State of California for the analyses <br /> requested Samples are transported to the laboratory promptly Samples in our custody are <br /> 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 dnnlung 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 1s 100 ppb To conform with the laboratory <br /> reports, groundwater chemical data are reported in units of ppb <br /> SHELLSICWSAMPL doe <br />