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. Nine to 12 gallons of water were purged from each well (except the two small-diameter piezometers f KF-6 and KF-7]). The purge water was stored in 55-gallon drums on site. After purging, water samples were collected with a disposable plastic bailer and placed in 40-m1 vials. A 1-liter bottle sample was also collected for total lead analysis. The bottles were labeled and logged and placed in a cooled ice chest for later transport to Sequoia Analytical Laboratory. The laboratory report and chain of custody form are in Appendix B. 4.0 RRSU� 4.1 Depth to Groundwater and Hydraulic Gradient The static water level rose by almost 4 feet during the first quarter, and the depth to groundwater now averages less than 9 feet. This rapid rise is due to the abundant rainfall that took place late in 2001. The data in Table 1 were used to contour the piezometric surface and interpret the groundwater flow direction, which are illustrated in Figure'3. The piezometric surface slopes toward the former Chevron site, where a closed depression surrounding MW-1, MW-2, MW-3, and MW-8 is present. This depression is clearly due to remedial activities at that site. Groundwater flow throughout the surrounding area is radial toward that depression. Contouring suggests that the water table has been drawn down several inches by extraction at that site. As requested by the CVRWQCB, a map illustrating the groundwater flow directions that have been measured in the past several years has been prepared. Figure 4 is updated from the Problem Assessment Report that was submitted in July of last year. Prior to the start of remediation at the former Chevron site, the groundwater flowed from the Chevron site toward the Kwikee site in 7 of 10 quarters. A northward flow direction was measured once, and flow from the Kwikee site toward the Chevron site was observed twice. Groundwater has flowed westward toward the Chevron site in the three quarters since remediation began. 4.3 Analytical Results The water samples were analyzed for Total Petroleum Hydrocarbons as gasoline and for volatile aromatic hydrocarbons (benzene, toluene, ethylbenzene, and xylene) using EPA methods 8015 and 8020. In addition, PHS/EHD requested that the samples also be analyzed for all gasoline oxygenates, 1,2-DCA, and EDB and for total lead. EPA methods 8260 and 7010 were used to analyze for these constituents. The results are shown in Table 2. Samples from KF-6 and KF-7 continue to be below reporting limits for all analytes. Concentrations also dropped below the reporting limits in KFA and KF-4 this quarter. The only analyte that was • 4