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f <br /> Work Plan <br /> ARCO Station 548, Stockton, California September S, 1990 <br /> ® AGS 30004-1 <br /> Soil samples will be analyzed for total petroleum hydrocarbons as gasoline (TPHg) and <br /> ® benzene, toluene, ethylbenzene, and total xylene isomers by Environmental Protection <br /> Agency (EPA) preparation method 5030 anA modified EPA Method 8020. Soil samples <br /> collected t -=rest the leaded gasoline tanks will be analyzed for organic lead by EPA <br /> Method 3500. <br /> REPORT PREPARATION <br /> We will prepare a report summarizing our field methods,laboratoiy procedures,laboratory <br /> '3 <br /> ® results,and conclusions. Information gathered will be considered confidential and released <br /> only with authorization of ARCO. <br /> 09 <br /> If gasoline hydrocarbons in soil are detected in samples collected from these borings and . <br /> the extent of the gasoline hydrocarbons is not defined within the scope of this work, with <br /> ARCO's authorization, we will continue aur investigation after the present tanks are <br /> removed. Before continuing this investigation, a work plan discussing the drilling of soil <br /> borings and collecting and analyzing of soil samples to delineate gasoline hydrocarbons in <br /> soil will be submitted to the SJPHS. We will investigate ground water for gasoline <br /> - hydrocarbons if warranted. <br /> MAN 101- <br />