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Mr. Mike Infurna <br /> Request for Fuel Additive Information <br /> Thrifty#172 <br /> October 6, 2004 <br /> Page 2 <br /> mg/Kg and in samples collected during tank removal activities by Alisto Engineering Group in <br /> July 1995, the maximum lead concentration was 22 mg/Kg. None of the sample results exceeded <br /> 50 mg/Kg of lead which would have triggered the need to analyze for lead using soluble <br /> threshold limit concentrations. In addition, in a sample collected with from the tank pull that had <br /> a TPHg concentration of 12,000 mg/Kg, lead was not detected above 5 mg/Kg. Sampling for <br /> lead would be very costly and time consuming as the samples would need to be field filtered into <br /> containers with the correct preservative. Thus, if the SJCEHD still requires analyses for soluble <br /> lead, Thrifty further requests that only the sample from well MW-11, the well with the highest <br /> TPHg, benzene, and MTBE concentrations, be analyzed for soluble lead. <br /> Should, you have any questions or comments, please contact the undersigned at (562) 921-3581. <br /> Sincerely, <br /> Michael Bowery, R.G. Chris Panaitescu <br /> Project Manager General Manager <br /> Environmental Affairs <br /> cc: Ms. Liz Sewell <br /> Tosco Marketing Company <br /> 76 Broadway <br /> Sacramento, CA 95818 <br /> File <br />