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I `rrace Analysis Laboratory, Inc. Telephone (415) 783-6960 <br /> 3423 Investment Boulevard, #8 • Hayward, California 94545 Facsimile (415) 783-1512 <br /> June 5, 1991 <br /> I <br /> Mr. Stephen Wilson <br /> Versar, Inc. <br /> 5330 Primrose Drive, Suite 228 <br /> Fair Oaks, CA 95628 <br /> rDear Mr. Wilson: <br /> Trace Analysis Laboratory received five air samples on May 31, 1991 , <br /> for your Project No. 6264.308, Ashley Lane (our custody Log Number <br /> 9943) . <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 is <br />' 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 /> 1 <br /> Founding Member of the Association of California Testing Laboratories <br />