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i <br /> Trace Analysis Laboratory,Inc. Telephone(415)783-6960 F <br /> 3423 Investmeni Boulevard,48 • Hayward,California 94545 Facsimile(415)783-1512 <br /> October 11, 1991 <br /> Mr. Jim Lehrman <br /> DuPont Environmental Remediation Services, Inc. s <br /> 7068 Koll Center Parkway, Suite 401 <br /> Pleasanton, California 94566 <br /> Dear Mr. Lehrman: <br /> Trace Analysis Laboratory received twenty eight soil samples on <br /> October 3, 1991 for your Conoco Project No. 400511-SA, East Washington � <br /> Street, Stockton (our custody log number 1369A). <br /> Four of these samples were analyzed for Total Petroleum Hydrocarbons as r. <br /> Gasoline, Benzene, Toluene, Ethylbenzene and Xylenes. Our analytical <br /> report and the completed chain of custody form are enclosed for your <br /> review. <br /> Trace Analysis Laboratory is certified under the California Environ- <br /> mental Laboratory Accreditation Program. Our certification number is <br /> 1199. ' <br /> If you should have any questions or require additional information, <br /> please call me. <br /> Sincerely your <br /> ivnnifer Pekoi <br /> Project Specialist <br /> Enclosures <br /> V-7 <br /> <.b <br /> E-16 <br /> Founding Member of the Association of California Testing Laboratories <br /> i <br />