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Air <br /> EUREKA WBOMTORIES, INC. CChemicaloAnalysis, <br /> Research 8 Testing <br /> Corporate Office: Branch Office: Environmental Studies <br /> 6790 FLORIN PERKINS ROAD 12121 NORTHUP WAY, SUITE 212 Robotics <br /> SACRAMENTO, CA 95828 BELLEVUE,WA 98005 Toxicology <br /> TEL: (916) 381-7953 TEL-(206)885-0284 <br /> FAX: (916) 381-4013 FAX:(206)885-6162 <br /> February 21, 1990 <br /> Mr. Jack Napper <br /> WESTERN GEO-ENGINEERS <br /> 1386 East Beamer <br /> Woodland, CA 95695 <br /> Reference: Project : Mid Cal Tractor <br /> ELI Order No. : 89-10-046 <br /> Dear Mr. Napper: <br /> This letter is in regards to our previous conversations concerning <br /> the subject task of which there were no target compounds detected. The <br /> analytical results reported have been thoroughly reviewed for accuracy and <br /> reproducibility and have passed EUREKA LABORATORIES, INC. Is high standards <br /> of quality assurance and quality control. This review included an <br /> investigation of the performance of the instrument at the time of the <br /> analysis of the subject task, from which it is concluded that all systems <br /> and their resulting data were in order. The analyses performed <br /> demonstrate the consistency that should occur between a Total Petroleum <br /> Hydrocarbon analysis (EPA 8015mod. & EPA 5030) and its Aromatic Volatiles <br /> (EPA 8020) counterpart 'by confirming the absence of any detectable <br /> constituents at the quantitation levels reported. <br /> ELI's chemists as well as our support staff have produced the <br /> aforementioned report in good faith and will continue to provide the <br /> professional and technical services as prescribed by the State of <br /> California Department of Health Services. <br /> If you have any questions or comments in regards to this matter, <br /> please do not hesitate to contact me at (916) 381-7953. <br /> Sincerely, <br /> EUREKA LABORATORIES, INC. <br /> rDBy <br /> Veronica P. Leong <br /> Customer Service Speci ist <br />