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B:\T :PULL.DOC <br />excavation; by hand augering a 6" diameter hole then obtaining the <br />sample by hand driving a 2"x6" sterile brass sleeve that has been <br />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 />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withdrawn from the sample barrel and the uncovered ends are 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 foil, then <br />plastic end caps that are sealed with duck tape, labeled, placed <br />in a zip lock freezer bag and then placed upon dry ice in a cooler <br />for preservation. The chain of custody was filled out prior to <br />leaving the site and the samples were hand delivered to ChemTech <br />Laboratories (State of California Cert. # 359). <br />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 ,, <br />George L. Converse Jack E. Napp <br />Project Geologist CA. REG. Geologist #3037 <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 />6 <br />