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— arsOEMr '- <br /> E <br /> Fsults of Initial Investigation and Work Plan Decemlhcr 18, 1990 <br /> ARCO Ser%ice S.ation No. 2076, Lodi, California AGS 30008-2 <br /> total xylene isomers were below detection limits. TPHg, organic lead, and BTEX were <br /> below detection limits in the composite sample from the soil pile. <br /> t .oma <br /> ® Based on the results of our field investigation and laboratory analyses, we conclude that <br /> gasoline hydrocarbons do not appear to be present in the soil around the perimeter of the <br /> existing tank cavity or.in area of the proposed tank cavity in concentrations warranting <br /> remediation.Ground water will probably not be encountered during the excavation of either <br /> d <br /> tank cavity. <br /> rr <br /> PROPOSED WORK <br /> The proposed work is designed to remove soil containing hydrocarbons if present from the } <br /> base of the tank:cavities and within the safe limits of the operating egi.fipm$nt and with. <br /> respect to.the surrounding structures. This work will be conducted in accordance with the <br /> following three regulatory documents:(1)Regional Board Staff Recommendations'for Initial <br /> ' Evaluation and Inrestigation of Underground Tanks, Tri-Regional Recommendations <br /> - <br /> fi (California Regional Water Quality Control Board [CRWQCB],:ivfay,1989); (2) Regional <br /> 'l Board Staff Recommendations for Initial.Evaluation and Investigation .of.Underground <br /> Tanks, :Tri-Regional Recommendations, Appendix A Central Valley Regional Board i <br /> Reporting Requirements(CRWQCB,April 1989);and(3)Leaking Underground Fuel Tank ! <br /> (LUFT)Field Manuai:Guidelines for Site Assessment,Cleanup,and Underground Storage <br /> t Tank Closure'(CRWQCB, October 1989). A letter of:acknowledgment is included in <br /> p Appendix C of this work plan. <br /> r <br /> Ao - <br /> .4ap/®ed GOOSYSteMs <br />