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B \TANKPLILL DOC <br /> excavation, by hand augering a 6" diameter hole then <br /> ,.p..g the <br /> sample by hand driving a 2"x6" sterile brass sleeve that ahasngbeen <br /> f inserted into a barrel sampler attached to rod extensions and, a <br /> slam bar. The auger and sampler were cleaned with trisodium <br /> phosphate and clean water rinse, prior to and between <br /> R sampling/augering Upon obtaining the soil sample the sleeve is <br /> withdrawn from the sample barrel and the uncovered ends are <br /> screened with the HNU-PID, then sealed with aluminum fail, <br /> plastic end caps that are sealed with duck tape, then <br /> labeled. placed <br /> } in a zip Zack freezer bag and then placed upon dry ice in a cooler <br /> for preservation. The chain of custody was filled out prior to <br /> E leaving the site and the samples were hand delivered to ChemTech <br /> Laboratories (State of California Cert # 359) <br /> j On 10/5/89 the product line trenches were sampled by a WEGE <br /> geologist under the supervision of Carol Oz Five soil samples <br /> were gathered from the trenches and preserved as described in the <br /> earlier paragraph These samples were chain of custody hand <br /> delivered to ChemTech for analysis, see table 1 <br /> If we can be of any other service to you on this site please let <br /> us known <br /> Sincerely yours, <br /> George L Converse <br /> � Project Geologist .lack E Napper <br /> l CA REG Geologist #3037 <br /> JI T <br /> cc* Ms. Carol Oz-San Joaquin County Health <br /> Mr Rod Hiltscher-City of Stockton Fire Dept <br /> Mr Randy Blair-Town & Country Contractors <br /> 2 <br />