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QUALITY ASSURANCE REPORT <br /> ZYMPXSPIKE DUPLICATE RESULTS <br /> Client: Lab Number: QSD VS70625 <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: 06/25/01 <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 0.016 107 0 <br /> Toluene 0.169 0.161 95 2 <br /> Ethylbenzene 0.044 0.039 89 16 <br /> Xylenes 0.233 0.193 83 16 <br /> Percent Surrogate Recovery 104 <br /> TOTAL PETROLEUM HYDROCARBONS <br /> Gasoline 2.50 2.11 84 3 <br /> BTX as a Percent of Fuel 17 18 <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 /> VS70625 <br /> MSD #7 <br /> VS70625q.xls Michael Ng <br /> MN/jdm/bp Assistant Lab Director <br /> .r. <br /> y <br /> 805.544.4696 ° 10I <br /> --.,7%irmnXr rcn rnrn fax 805.`.-14.?,226 <br />