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onto chain-of-custody documents, and transported on ice to the laboratory using <br /> appropriate chain-of-custody documentation. <br /> Laboratory Procedures <br /> Analysis for total purgeable petroleum hydrocarbons calculated as gasoline (TPPH-g), <br /> and total extractable petroleum hydrocarbons calculated as diesel (TEPH-d) were <br /> performed by the DHS LUFT method. Analysis for benzene, toluene, ethylbenzene, and <br /> xylenes was performed by modified EPA Method 8020. These analytical methods utilize <br /> gas chromatography and flame-or photo-ionization detection. <br /> Analyses for total recoverable petroleum hydrocarbons were performed by the <br /> gravimetric method (EPA Methods 5520 E and F). These analyses are also performed <br /> by gas chromatography and flame- or photo-ionization detection. <br /> Analysis for metals was by California Assessment Manual techniques. The samples were <br /> extracted by chemical wet-lab techniques which vary by metal analyte. Detection was by <br /> atomic absorption, mass-, flame-, or photo-spectrometry depending on the metal analyte. <br /> All analyses were performed by California State-certified analytical laboratories. <br /> . 3100011B/REPORT A- 2 November 30, 1994 <br />