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The monitoring wells were purged with a pump and dedicated disposable tubing until at least three <br /> well casing volumes had been removed and/or after groundwater temperature, pH and electrical <br /> ' conductivity values had stabilized Groundwater was sampled from the monitoring wells using <br /> dedicated and disposable polyethylene bailers and laboratory-supplied containers Groundwater <br /> was sampled from the water supply well using a bailer, after the pump had activated and the water <br /> ' was allowed to run for approximately 15 minutes All sample containers were transported in an iced <br /> cooler with chain-of-custody documentation to Excelchem Environmental (Excelchem), a state of <br /> California certified hazardous waste testing laboratory (Certification #2119) <br /> Excelchem analyzed all of the groundwater samples for TPH-as-gasoline by EPA Method 8015M, <br /> and for BTEX, MTBE, DIPS, ETBE, TAME, TBA, and 1,2-DCA by EPA Method 8260B <br /> ' 2 2 4 Waste Storage and Disposal <br /> All waste soil generated during drilling was stockpiled on-site using a base and cover of plastic <br /> sheeting On January 6, 2002, since gasoline compounds were not detected in the four soil <br /> samples collected from the monitoring well borings, Kane Drum Removal spread the soil stockpile <br /> ' in the northern part of the site <br /> Equipment rinse water and purged groundwater accumulated during quarterly monitoring and <br /> sampling were contained in five, 55-gallon drums and temporarily stored on-site On November 22, <br /> 2002, Ramos Environmental Services, removed the water from the drums using a vacuum truck, <br /> and transported the wastewater as non-RCRA hazardous waste liquid (oily water) to its recycling <br /> facility in West Sacramento, California On January 6, 2002, Kane Drum Removal removed the <br /> empty drums A copy of the waste manifest is included as Appendix C <br /> 1 <br /> 10 <br /> 1 ' <br /> 1 <br />