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The nine soil samples were sealed with Teflon film and plastic end caps, and transported in an <br /> iced cooler with chain-of-custody documentation to Excelchem Environmental Labs (Excelchem), a <br /> state of California-certified hazardous waste testing laboratory (Certification #2119) Excelchem <br /> analyzed all of the sod samples for TPH-as-gasol+ne, benzene, toluene, ethylbenzene, and xylenes <br /> (BTEX) by EPA Method 8020/8015M, and for MTBE, di-isopropyl ether(DIPS), ethyl tertiary butyl <br /> ether (ETBE), tertiary amyl methyl ether (TAME), tertiary butanol (TBA), and 1,2-dichloroethane <br /> (1,2-DCA) by EPA Method 8260B <br /> 2 2 3 Well Development, Groundwater Monitoring, Sampling and Analysis <br /> On April 22, 2005, Ramage Environmental developed the newly-installed monitoring wells Each <br /> well was surged with a surge block and purged of approximately 10 to 15 gallons of water with a <br /> centrifugal pump <br /> On April 25, 2005, Ramage Environmental monitored and sampled the three new and six existing <br /> monitoring wells Depth-to-groundwater was monitored using a water level indicator capable of <br /> measurements to within 0 01 foot Following groundwater level measurements, the wells were <br /> purged and sampled <br /> 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 I a boratory-s upp lied containers All sample <br /> containers were transported in an iced cooler with chain-of-custody documentation to Excelchem <br /> Excelchem analyzed all of the groundwater samples for TPH-as-gasoline and BTEX by EPA <br /> Method 802018015M, and for MTBE, DIPE, ETBE, TAME, TBA, and 1,2-DCA by EPA Method <br /> 8260B <br /> 2 2 4 Waste Storage and Disposal <br /> All waste soil generated during drilling was contained in six, 55-gallon drums and temporarily stored <br /> on-site pending disposal During the drilling activities of April 16, 2005, Ramage Environmental <br /> collected representative soil samples from each boring to characterize the waste soil The soil <br /> samples were combined into three 2-inch by 6-inch stainless steel sleeves and transported with <br /> chain of-custody documentation to Excelchem Excelchem combined the three sample sleeves into <br /> one, and analyzed the composite sample for TPH-as-gasoline and BTEX by EPA Method <br /> r8020/8015M, and for total lead by EPA Method 6010817471A <br /> 10 <br />