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Ms. Vera Fischer <br /> Page 3 <br /> Soil Vapor Samples <br /> The Summa canisters were submitted under chain-of-custody protocol to Eurofins/Air Toxics <br /> laboratory in Folsom, California and analyzed for volatile organic compounds (VOCs) by <br /> EPA Method TO-15, including the leak detection compound DFA; for TPHg by EPA Method <br /> TO-3; and for oxygen by ASTM Method D-1946. <br /> Analytical Results <br /> Soil Samples <br /> • TPHg was not detected in any of the soil samples. <br /> • TPHd was detected in each of the samples. Concentrations ranged from 3.9 to 140 <br /> parts per million(ppm). <br /> • Benzene was detected in three samples at estimated(J-flagged) concentrations ranging <br /> from 0.0011 to 0.0019 ppm. <br /> • Toluene was detected in two samples with estimated concentrations of 0.0014 and <br /> 0.0026 ppm. <br /> • Ethylbenzene, xylenes, fuel oxygenates, lead scavengers and naphthalene were not <br /> detected in any of the soil samples. <br /> Results are summarized in Table 1. The laboratory report is included in Attachment C. <br /> Soil Vapor Samples <br /> • TPHg was detected at concentrations of 470 and 540 micrograms per cubic meter <br /> (ug/m3)in VP-1 and VP-2 respectively. <br /> • Benzene was only detected in VP-2 at 3.8 ug/m3. <br /> • Toluene, ethylbenzene, xylenes, MTBE. ethylene dibromide, 1,2-dichloroethane and <br /> naphthalene were not detected. <br /> • In addition to the above, low levels of ethanol, acetone, 2-propanol and <br /> tetrachloroethene were detected in one or both samples. <br /> • The leak detection compound DFA was detected in both samples. <br /> • Oxygen was present at 18 and 19 percent in VP-1 and VP-2. <br /> Results are summarized in Table 2. The laboratory report is included in Attachment D. <br /> Soil Vapor Assessment Report <br />