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QUALITY ASSURANCE REPORT <br /> Zy SPIKE DUPLICATE RESULTS <br /> Client: Lab Number: QSD VS80619 <br /> ZymaX envirotechnology, inc. Collected: <br /> 71 Zaca Lane, Suite 110 Received: <br /> San Luis Obispo, CA 93401 Matrix: Soil <br /> Project: Sample Description: <br /> Quality Assurance Spike Duplicate <br /> Project Number: Analyzed: 06/19/01 <br /> Collected by: Method: See Below <br /> P <br /> CONSTITUENT Amount Spiked Amount Recovered Percent Relative Percent <br /> mg/kg mg/kg Recovery Difference* <br /> Benzene 0.016 0.017 106 6 <br /> Toluene 0.180 0.193 107 1 <br /> l Ethylbenzene 0.054 0.056 104 11 <br /> Xylenes 0.291 0.295 101 10 <br /> Percent Surrogate Recovery 101 <br /> TOTAL PETROLEUM HYDROCARBONS <br /> Gasoline 2.50 2.65 106 2 <br /> IRTX as a Percent of Fuel 19 19 <br /> ZymaX envirotechnology, inc. is certified by CA Department of Health Services: Laboratory #1717 <br /> *Relative Percent Difference of the spike and spike duplicate <br /> 1 Note: Analyzed by EPA 8260 and GC/MS Combination. <br /> . i <br /> Submitted by, <br /> ZymaX envirotechnology, inc. <br /> VS80619 <br /> MSD #8 <br /> VS80619q.xls Michael Ng <br /> MN/jdm/hs Assistant Lab Director <br /> I <br /> 805.544.4696 71 [ara Lane <br /> 1AAAAAJ 7vm iYi icza enm San Luis Obispo S 9.3406 <br /> fax 805..544.8226 <br />