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7 <br /> The groundwater in the vicinity of the site is unconfined Groundwater elevatibn at the <br /> . site varies from a wet year high of 25 feet bgs to at least 50 feet bgs during the pFevious <br /> drought period Groundwater flow direction at the site has varied from north to-south <br /> through the northeast and southeast quadrants <br /> QUARTERLY GROUNDWATER MONITORING, 12/6/00 <br /> WEGE and Pittman Well Purging (PWP) collected quarterly groundwater samples from <br /> the three monitor wells at the site on December 6, 2000 See Appendix A for QA/QC, <br /> details, methods, procedures, abbreviations, and acronyms used in sampling and analysis <br /> See Appendix B for copies of the field data sheets <br /> DEPTH TO WATER MEASUREMENTS <br /> WEGE measured depth to water in all wells on December 6, 2000 The measurements <br /> were made from the surveyed elevation datum at the top of casing at each well using an <br /> electrical air/water interface probe (Table 1) No free product or product sheen was <br /> observed in any of the monitor wells <br /> COLLECTION AND CERTIFIED ANALYSIS OF GROUNDWATER SAMPLES <br /> Following depth to water measurements, PNMT purged approximately three well volumes <br /> of water from each well using a truck mounted vacuum lift pump and dedicated one inch <br /> . diameter PVC tubing The volume of water purged from each well is noted on the field <br /> data sheets (see Appendix B) <br /> After purging, the wells were allowed to recoN er to at least 80% of their original well <br /> volumes A groundwater sample was then collected from each well with a disposable <br /> polyethylene bailer and decanted with no head space into four 40 m] VOA vials <br /> containing 0 5 ml HCL acid as a preservative <br /> The samples were delivered with accompanying chain of custody documentation to North <br /> State Environmental Laboratories (DHS Certification 41753) The certified laboratory <br /> analyzed the groundwater samples from each monitor well for concentrations of TPH-G <br /> and BTEX and MTBE using EPA methods SOI5M and 8020 <br /> DISPOSITION OF WASTEWATER <br /> The 45 uallons of wastewater that were generated from purging of the monitor wells were <br /> temporarily contained on-site to a labeled 55 gallon dot approved drum <br /> • <br /> 2 Arc Pump QM 7-9, 2000 <br />