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COLLECTION AND CERTIFIED ANALYSES OF GROUNDWATER SAMPLES <br /> WEGE personnel collected-quarterly groundwater-samples-from--seven monitor wells-at- <br /> the <br /> ells-atthe site on January 15, 2004 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 electrical <br /> submersible (Reda Flow 2) adjustable speed pump and dedicated 5116 inch diameter <br /> polyethylene tubing to purge each well of three volumes of water and until the water <br /> parameters, pH, conductivity and temperature stabilized <br /> Purging was conducted at pump rates to prevent the wells from being drawn down more <br /> than 20% of their original well volumes A groundwater sample was then collected from <br /> each well through the dedicated polyethylene tubing with no headspace into two 40 ml <br /> VOA vials containing 0 5 ml HCL acid as a preservative <br /> The samples were delivered with accompanying chain of custody documentation to KIFF <br /> Analytical LLC (DHS certified 92236) The laboratory analyzed the water samples from <br /> each monitor well for concentrations of TPH-G, BTEX and the five oxygenants using <br /> EPA method 8260B, see Appendix C -Laboratory Report <br /> DISPOSITION OF WASTEWATER <br /> Groundwater purged during the January 15, 2004 sampling of the monitor wells was <br /> processed through 4, in series, water carbon units, a sample of the treated water was <br /> obtained This water(168 gallons) was temporarily contained on-site in a 250 gallon poly <br /> tank Sample results showed this water could be discharged to the sanitary sewer, it was <br /> discharged to server on January 30, 2004, see March 2004 Sewer Discharge Report, <br /> Appendix D <br /> RESu][_TS OF QUARTERLY GROUNDWATER MONITORING <br /> GROUNDWATER GRADIENT AND FLOW DIRECTION <br /> A-ZONE- 1876 AND 1856 COUNIRY CLUB 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 0015 ft/linear ft (Country Club <br /> Food and Fuel MW3 to Sanchez MW6A) <br /> 5 Sanchez QM I ST 2004 <br />