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Mr. Philip Isorena • Oroject OC42-001.20 <br /> October 13, 1994 <br /> Page 2 <br /> detection limit of 5 µg/L to 8 µg/L. The total lead concentrations are presented on Table 2. The <br /> HydroPunch sample total lead concentrations appear to be anomolously high, and the elevated <br /> concentrations are attributed to non-filtration of the samples. <br /> This letter should be considered to be an amendment to the phase R report. If you have any <br /> questions please call. <br /> Sincerely, <br /> EMCON Associates <br /> erry���JJ �k�yr""ePilvc� <br /> GBonham P.E. <br /> Project Director <br /> Attachments: Table 1 HydroPunch Groundwater Sample Analytical Results <br /> Table 2 Total Lead Concentrations Comparison of HydroPunch and <br /> Monitoring Well Results <br /> cc: Roy Thun, ARCO Products Company <br /> Kyle Mullins, ST Services <br /> Anastasia Duarte, Time Oil Company <br /> Alan Hawickhorst,Tesoro Marketing, Refining, and Supply <br /> Dianne Hinson, San Joaquin County Health Department <br /> Alexander Krygsman, Port Director, Port of Stockton <br /> Steven McDonald, Luce, Forward, Hamilton, and Scripps <br /> SAC/PJMC4Z\OC420012.OAM-94/LFC:2 <br />