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Laboratory Analysis for Soil Samples <br /> Analyses for TPHg and benzene, toluene, ethylbenzene, xylenes (BTEX compounds) were <br /> performed by EPA Method 801518020. Fuel Oxygenates were analyzed by EPA Method <br /> 8260B. Analysis for lead was done using EPA method 6010A. <br /> Groundwater Sampling Procedures <br /> The groundwater samples from SB-1, SB-2, and SB-3 were obtained by using a hydro-punch <br /> sampling device, in which discrete water samples are collected from a specific target depth. <br /> Standard operating procedures include applying o-rings or Teflon tape around the threads of <br /> the rod joints to prevent leakage of non-target zone water. A rubber shield was place over the <br /> hydro-punch tip or O-ring at the tip joint to prevent leakage of non-target zone water. The <br /> hydro-punch was driven 1 to 2 feet into the formation. After confirming with a water level <br /> indicator that no water had entered the hydro-punch rods, the screen was pulled back and <br /> exposed, allowing water to enter. Water was collected within a stainless steel bailer and <br /> containerized within HCL preserved 40 ml VOA's. <br /> Laboratory Procedures for Groundwater Samples <br /> The groundwater samples were analyzed for the presence of total petroleum hydrocarbons <br /> calculated as gasoline and benzene, toluene, ethylbenzene, xylenes by EPA Method <br /> 8015/8020. Fuel oxygenates were analyzed by EPA Method 8260B. These analyses were <br /> performed by utilizing a purge and trap extraction technique, with final detection was by gas <br /> chromatography using flame- and photo-ionization detectors. The methods of analysis for <br /> the groundwater samples are documented in the certified analytical report. <br /> i <br />