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.1 <br />_ _ NV�AffAj <br />t-"nrU <br />Due to the nature of the environment around this site and the type of <br />contaminant involved, #4 fuel oil, the lack of this contaminant's mobility, and the relatively <br />low contaminant level, 300 to 600 ppm, Resna requests that no further excavation below <br />the tanks and vault occur. Resna will remove contaminated soil around the outside of the <br />tanks and vault prior to closure. The ground water will be monitored from existing wells <br />already located down gradient from this site on the Newark/Sierra property. <br />Pamela, please find enclosed lab analysis from the borings done. Your <br />immediate attention to this matter would be appreciated. If I can be of further assistance <br />or you would like to meet to further discuss this option please contact me at this office <br />(510)426-6681. <br />Sincerely, <br />John R. Lamb <br />Branch Manager Construction Services <br />cc. Mike Rogge, Newark/Sierra <br />Gary Hill, Resna <br />File <br />