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Unocal Service Station ##6981 <br /> November 28, 1994 <br /> drummed soil (SC-0$02-3) at a concentration of 240 ppm Toluene, ethylbenzene, and <br /> xylenes were also detected in this sample at concentrations of 0 41 0 30, and 1 3 ppm, <br /> respectively The laboratory noted that is sample consisted of unidentified hydrocarbons <br /> greater than C6 The total Iead concentration is this sample was 15 ppm <br /> Vapor Stream Chemical Analytical Results <br /> TPHg was detected in the VES influent vapor stream sample at a concentration of 2,000 <br /> ppmv Benzene, toluene, ethylbenzene, and xylenes were also detected in this sample at <br /> concentrations of 44, 110, 14, and 48 parts per million vapor (ppmv), respectively The <br /> laboratory noted that the chromatogram pattern of this sample was a gasoline and non- <br /> gasoline mixture less than C8 TPHg, benzene, and ethylbenzene were not detected in the <br /> VES effluent vapor stream sample Toluene and xylenes were detected in this sample at <br /> concentrations of 0 037 and 0 023 ppmv, respectively <br /> WASTE DISPOSAL <br /> Stockpiled soil generated during product island remodelling and VES installation <br /> (approximately 126 yd ) was removed from the site on August 10, by Manley and Sons <br /> Trucking of Sacramento, California, and transporter) to the Forward Inc landfill in <br /> Manteca, California, for disposal Eight drums of soil generated during installation of <br /> vapor wells VW-5 and VW-6 by RESNA were removed form the site by Manley on <br /> September 19, 1994, and transported to Forward for disposal Copies of the Manley <br /> disposal confirmation forms are presented in Appendix D <br /> DISCUSSION AND CONCLUSIONS <br /> Petroleum hydrocarbons were not detected in the soil samples collected adjacent to the <br /> product dispenser islands Delineation of hydrocarbon impacted soil in these areas appears <br /> to be complete Soil generated during remodelling of the product dispenser islands and the <br /> installation of vapor extraction wells VW-5 and VW-6 has been removed from the subject <br /> site <br /> 4855701-1 5 <br /> GeoStrategies Inc. <br />