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collect samples to confirm the vapor results The results of the investigation were presented in the Soil Assessment Report prepared by Upgradient in April 1998 Subsequently, one of the borings was converted to groundwater monitor well VM-4 In August 1999, Upgradient installed two remediation test wells within the mapped zone of soil contamination However, no hydrocarbons were detected in any of the soil samples collected from these wells One of the wells (VT-1) was screened with 4-inch PVC casing from 15 to 30 feet for future use in soil vapor extraction testing' The other well (SW-1), was screened with 2-inch PVC casing from 29 5 to 315 feet for potential use as an air sparging well (Groundwater monitoring has been performed quarterly since the middle of 1998 This report presents the result of monitoring for the fourth quarter of 2002 4 3.0 PROCEDURES The depth to groundwater was measured and water samples were collected on November 20, 2002 The wells were opened and allowed to equalize with atmospheric pressure before the depth to groundwater was measured Depth measurements were recorded on the Well Monitor Report (Appendix A) and are shown in Table 1 After water depths were measured, samples were collected from each well Two 40-m1 vials were collected from each, labeled, and placed in a cooled ice chest The samples were later transported to Sequoia Analytical Laboratory for analysis The laboratory report is included in Appendix B One vial from VM-2 was broken during transport, and the second vial was broken at the laboratory Therefore, a replacement sample was collected on December 27 4.0 RESULTS 4.1 Depth to Groundwater and Hydraulic Gradient The depth to groundwater on November 20 averaged about 36 feet (Table 1), which is about 1 foot deeper than it was in September and about 3 feet deeper than at this time last year Figure 3 illustrates the hydraulic gradient and general direction of groundwater flow The contours form an arcuate pattern and slope eastward, implying that this is the predominant flow direction 4.2 Analytical Results Total Petroleum Hydrocarbon and BTEX concentrations again decreased in three of the four wells during the quarter(Table 2) In VM-1, concentrations have declined each quarter this year and are now less than 50%of their March concentrations and about 65% of their concentrations a 3