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QUALITY ASSURANCE REPORT <br /> ZyM111SPIKE DUPLICATE RESULTS <br /> I <br /> Client: Lab Number: QSD VS110808 <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: 08/08/01 <br /> Collected by: Method: See Below <br /> CONSTITUENT Amount Spiked Amount Recovered Percent Relative Percent <br /> mg/kg mg/kg Recovery Difference* <br /> Benzene 0.015 0.014 93 15 <br /> Toluene 0.169 0.172 102 9 <br /> Ethylbenzene 0.044 0.044 100 7 <br /> Xylenes 0.233 0.234 100 8 <br /> Methyl t-Butyl Ether (MTBE) 0.174 0.199 114 12 <br /> is <br /> Percent Surrogate Recovery 101 <br /> TOTAL PETROLEUM HYDROCARBONS <br /> Gasoline 2.50 2.26 90 5 <br /> ;TX as a Percent of Fuel 17 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 /> Note: Analyzed by EPA 8260 and GC/MS Combination. <br /> Submitted by, <br /> ZymaX envirotechnology, inc. <br /> VS110808 <br /> MSD #11 <br /> S110808q.xls Michael Ng <br /> MN/jdm/bm Assistant Lab Director <br /> 805.544.4696 <br /> www.ZymaYusa.com r.F au, :I_;;.zc <br />