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t <br />' 7 .0 LABORATORY ANALYSES <br /> The samples were sent to McCampbell Analytical Inc of Pacheco, <br />' California, a state-certified laboratory, and analyzed for <br /> • TPHg using EPA Method 5030/GCFID, <br />' BTEX and MTBE using EPA Method 8020/8260, and <br /> • TPHd using EPA Method 8015M, <br /> The samples were analyzed on a normal 5-day turnaround basis <br /> 7 .1 Laboratory Analytical Results <br />' Laboratory analytical results are summarized in Table 1 and <br /> Figure 3 Laboratory certificates are included in Appendix A <br /> The results are as follows <br /> Analysis of groundwater samples indicated that <br /> o TPHg concentrations were less than 50 0 {_ig/l (not detected) <br /> 1 o Benzene concentrations were less than 0 5 pg/l (not <br /> detected) <br /> o Toluene concentrations were less than 0 5 Mg/l (not <br /> detected) <br />' o Ethylbenzene concentrations were less than 0 5 ,ug/l (not <br /> detected) <br />' o Xylenes concentrations were less than 0 5 pg/l (not <br /> detected) <br /> a MTBE concentrations were less than 1 0 yg/l (not detected) <br /> o TPHd concentrations ranged from less than 50 0 Mg/l (not <br />' detected) to 690 ,ug/l <br /> 8 .0 DISCUSSION <br /> 1 Groundwater samples were collected from wells MW-1, MW-2 , and <br /> MW-3 Depth-to-groundwater measurements were also recorded for <br />' the three wells Mapping and analysis of the groundwater <br /> elevation data suggest that the local groundwater gradient flows <br /> in a northeasterly direction <br />' Laboratory analytical results indicated that there were non- <br /> detectable concentrations of TPHg, BTEX, and MTBE in the <br />' 4 <br /> 1 <br />