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Trace Analysis Laboratory, Inc. Telephone (415) 783-6960 <br /> 3423 investment Boulevard, #8 • Hayward. California 94545 Facsimile (415) 783-1512 <br /> 1 July 18, 1991 <br />' Mr. James Jensen <br /> versar, Inc. <br /> 5330 Primrose Drive, Suite 228 <br /> Fair Oaks, CA 95628 <br /> Dear Mr. Jensen: <br />' Trace Analysis Laboratory received two air samples on July 7, <br /> 1991, for your Project No, 6264.308.02, P.B. Stockton (our custody <br /> Log Number 1087) . <br />' These samples were analyzed for Total Petroleum Hydrocarbons as <br /> Gasoline, Benzene, Toluene, Xylenes and Ethylbenzene. Our analytical <br /> report, the completed chain of custody form, and our analytical <br /> methodologies are enclosed for your review. <br /> Trace Analysis Laboratory is certified under the California Environ- <br /> mental Laboratory Accreditation Program. Our certification number <br /> is 1199. <br /> If you should have any questions or require additional information, <br /> please call me. <br /> Sincerely yours, <br /> Louis DuPuis <br /> QA/QC Manager <br /> Enclosures <br /> I <br /> Founding Member of the Association of California Testing Laboratories <br />