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COLLECTION AND CERTIFIED ANALYSES OF GROUNDWATER SAMPLES <br /> • WEGE personnel collected quarterly groundwater samples from seven monitor we <br /> lls at <br /> the site on October 15, 2003 See Appendix A for QA/QC, details, methods, procedures, <br /> abbreviations, and acronyms used in sampling and analysis <br /> Following depth to water measurements, WEGE used a truck mounted pump truck with <br /> an ad3ustable speed vacuum lift pump and dedicated one inch diameter PVC tubing to <br /> purge each well of three volumes of water <br /> After purging, the wells were allowed to recover to at least 80% of their original well <br /> volumes A groundwater sample was then collected from each well with a polyethylene <br /> bailer and decanted with no headspace into two 40 ml VOA vials containing 0 5 ml HCL <br /> acid as a preservative <br /> The samples were delivered with accompanying chain of custody documentation to KIFF <br /> Analytical LLC (DHS certified 42236) The laboratory analyzed the water samples from <br /> each monitor well for concentrations of TPH-G, BTEX and MtBE using EPA method <br /> 8260B, see Appendix C - Laboratory Report <br /> DISPOSITION OF WASTEWATER <br /> Groundwater purged during the May 22, 2003 sampling of the monitor wells was <br /> processed through 4, in series, water carbon units, no discharge occurred from the 4`' <br /> carbon Groundwater purged during the August 7, 2003 sampling of the monitor wells <br /> was processed through the 4, in series, water carbon units 40 gallons of treated water <br /> was discharged from the 4t' carbon unit into a 55 gallon drum This water was sampled <br /> and temporarily contained on-site in the 55 gallon DOT approved drum Sample results <br /> showed this water could be discharged to the sanitary sewer, it was discharged on August <br /> 28, 2003, see August 2003 Sewer Discharge Report, Appendix D <br /> RESULTS OF QUARTERLY GROUNDWATER MONITORIlNG <br /> GROUNDWATER GRADIENT AND FLOW DIRECTION <br /> A-ZONE- 1876 ANi)1856 COUNMY CI us BOULEVARD <br /> Figure 4A uses the new survey elevations supplied by Kjeldsen, Sinnock& Keudeck, Inc <br /> survey dated May 1, 2001 Figure 4A shows the groundwater elevation gradient and flow <br /> direction determined from depth to water measurements at the four on-site monitor wells <br /> and the two off-site cluster wells MW6A and MW7A The current groundwater gradient <br /> • shows a flow direction to the northwest at a gradient of 0 0017 ft/linear ft (Country Club <br /> Food and Fuel MW3 to Sanchez MW6A) <br /> 5 Sanchez QM 4th 2003 <br />