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i <br /> INTRODUCTION <br /> This Work Plan describes tiie proposed procedures for soil excavation and sampling at <br /> ARCO Products Company (ARCO)service station No. 6100 (Site) located at 25775 South <br /> Patterson Pass Road, Tracy, California (Figure 1). The purpose of the excavation is to <br /> { from beneath the existing underground storage tanks <br /> remove hydrocarbon-contaminated soil <br /> val. Mr. William Snavely with the San Joaquin Local <br /> immediately following tank remo <br /> v" Health District(SJLHD) informed Roux and ARCO at a field meeting held at the Site on <br /> i <br /> June 28, 1990 that the SJLHD requires an approved Work Plan prior to exc,ivation of soil <br /> at depth greater than ave feet below the tanks. Preliminary soil borings at the site detected <br /> 1 petroleum hydrocarbons at depths greater than five feet below the tanks. Therefore, t . <br /> excavation of soil deeper than five feet below the tanks is anticipated. The tank <br /> replacement project will not be scheduled to begin until this work pian is approves! by San <br /> t� <br /> Joaquin County. <br /> i <br /> 1� <br /> w This Work Plan has been prepared by Roux Associates West,Inc.(Roux)in accordance with <br /> the Central Valley Regional Board Stuff Recommendations for Initial Evaluation and <br /> 1 <br /> j Investigation of Underground Tanks (Tri-Regional Recommendations),Appendix A of the <br /> i <br /> Ti i-Rcgional Recommendations,and the Leaking Underground Fuel Tank Manual(LUFT). <br /> The work described in this Work Plan will be performed by experienced Roux geologists <br /> i <br /> under the super iision of Mr.Keith Kennedy,California Registered Geologist Number 4903. <br /> 1 Doc#AR0676711U] <br /> s-ling-1_1 11 <br /> �/ r ', <br />