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' Mapping and analysis of the groundwater elevation data suggest <br /> that the local groundwater gradient flows in a northeasterly <br />' direction Figure 4 shows the water-level data collected and <br /> interpreted contour lines <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 /> • Total lead using EPA Method 6010 . <br /> ' The samples were analyzed on a normal 5-day turnaround basis <br /> 7. 1 Laboratory Analytical Results <br /> The 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 /> • Lead concentrations were less than 5 0 ug/l (not <br /> detected) <br /> ' 8. 0 DISCUSSION <br /> ' Laboratory analytical results indicated that there were non- <br /> detectable concentrations of lead in the groundwater samples <br /> collected from wells MW-1, MW-2 , and MW-3 <br /> Based on the laboratory analytical results of this groundwater <br /> sampling event, it appears that lead concentrations in the <br /> groundwater are lower relative to the results of the previous <br /> ' sampling event conducted in December 1999 (Table 1) We <br /> recommend that no further action be required and are requesting <br /> closure of the groundwater monitoring activities at the Site <br /> based on the non-detectable concentrations of lead in the <br /> groundwater within the Site <br /> ' 9.0 EXCLUSIONS <br /> ICES assumes no responsibility or liability for the reliance <br /> hereon or use hereof of information contained in this report by <br /> anyone other than the party to whom it is addressed <br /> ' 4 <br />