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million (ppm) . ND means below the detection limit for this <br /> analysis. <br /> FIELD WORK <br /> John P. Cummings of JPCA, met with Harlan Knoll of SJCEHD, and <br /> Messrs. Joseph P. Eger and Paul Wnuk, all of whom were on site <br /> during the morning of November 3 , 1997 . John P. Cummings collected <br /> groundwater samples and took depth to groundwater measurements from <br /> the three wells. <br /> GRADIENT DETERMINATION <br /> Prior to purging and sampling, on November 3 , 1997, the depth to <br /> groundwater was measured by an electronic probe in the three <br /> Monitoring Wells on site, see Figure 2 for locations of the wells <br /> on site. The water depth was measured from a mark located on the <br /> top of the casings. The groundwater gradient data are presented in <br /> Table 1. The calculated gradient is S 64' W or 244° at 0 . 01 ft/ft. <br /> The groundwater gradient is depicted in Figure 2 . Field notes are <br /> contained in Appendix A. <br /> GROUNDWATER SAMPLING <br /> The wells were purged to dryness. The groundwater samples were <br /> collected via a clean bailer, placed in 40 ml VOAs, labeled, placed <br /> in a cooled ice chest and transported to a state certified <br /> laboratory (MCCAMPBELL ANALYTICAL INC. ) under Chain of Custody <br /> (COC) documentation for analysis . The groundwater samples from MW- <br /> i and MW-2 wells had a hydrocarbon odor. <br /> ANALYTICAL RESULTS <br /> The analytical methods are those required in the "Tri-Regional <br /> Guidelines" which are directives of the Regional Water Quality <br /> Control Board and requested by the SJCEHD. <br /> The analyses completed were for Total Petroleum Hydrocarbons, as <br /> gasoline (TPHG) ; Benzene, Toluene, Ethylbenzene and Xylene (BTEX) <br /> and Methyl-tert-butyl ether (MTBE) via EPA Modified Method <br /> 8020/8015 and 8260 respectively. <br /> The results of the groundwater samples in ug/L (parts per billion <br /> 3 <br />