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In July 1996, three soil borings were drilled and two were converted to monitoring wells Contaminated soil was encountered in two of these, and one or more hydrocarbon contaminants were detected in water samples from all three, as well as in the previously drilled well (VA4-1) The resulting data helped to partially define the limits of soil contamination, but the limits of groundwater contamination were not reached A soil vapor survey was conducted in March, 1998, in order to better define the extent of near- surface soil contamination This survey was followed by the drilling of two new soil borings to 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 tf 4,- borings was converted to groundwater monitor well VM-4 Groundwater monitoring has taken place annually or semi-annually at this site since 1995 In 1998, groundwater was monitored in August. 3.0 PROCEDURES Upon arrival at the site, the wells were opened and allowed to equalize with atmospheric pressure A Solinst water level meter was used to measure the depth to groundwater in the monitoring wells Depth measurements were recorded on the Well Monitor Report (Appendix A) and are Shown in Table 1 After water depths were measured, a Grundfos submersibile pump was used to purge the wells of between twelve and fifteen gallons of water, which was stored in a DOT-approved drum in the southwest corner of the site During purging, a Coming meter was used to measure pH, conductivity, and temperature, and these parameters were recorded on the Well Monitor Report After purging, samples were collected from each well Three 40-mI vials and one 1-liter amber bottle were collected from each, labeled, and placed in a cooled ice chest The samples were later transported to Excelchem for analysis The laboratory report is included in Appendix B 4.0 RESULTS 4.1 Depth to Groundwater The depth to groundwater has remained constant at slightly less than 35 feet since it was measured in August (Table 1) The static water surface is 11 to 13 feet above the screenrd interval in the first three wells, and approximately a foot over the screen in VM-4 4.2 Groundwater Gradient Figure 3 illustrates the general direction of groundwater flow Presently, flow is to the east The gradient decreases from 0 0055 ft/ft in the northern part of the site to 0 0022 ft/ft in the �,:)uthern part of the site The steeper gradient near VM-4 is probably due to the low-permeability .lay that 3