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DEC 04 2001 8: 53 HP LASERJET 3200 P- 39 <br /> ZY1QUALITY ASSURANCE REPORT <br /> rr$ MATRIX SPIKE DUPLICATE RESULTS <br /> Client- John Mattey Lab Number. 26790-1 MSD <br /> G>EOCON Collected 11116/01 <br />' 11375 Sunrise Party Dr., Ste. 100 Received 11/19/01 <br /> Rancho Cordova, CA 95742 Matrix. Soil <br /> Project- Cal Trans Sande Descnption <br /> Shop - 10 Quality Assurance Spike Duplicate <br /> Project Number 58475-06-02 Analyzed. 11/29/01 <br />' Collected by. West Bour cult Method. See Below <br /> CONSTITUENT Amount Spik®d Amount Rocovered Percord Relative Percent <br /> uglL ug1L Recovery Difference' <br />' Benzene 0015 0 017 113 6 <br /> Toluene 0 169 0189 112 5 <br />' Ethylbenzene 0 044 0051- 1 16 2 <br /> Xylenes 0 233 0 268 115 3 <br /> Methyl it-Butyl Ether {MTBE} 0136 0 126 93 9 <br /> Percent Surrogate Recovery 106 <br /> TOTAL PETROLEUM HYDROCARBONS <br /> Gasoline 250 2.36 94 2 <br /> BTX as a Percent of Fuel <br /> 17 21 <br />' ZymaX envirotechnology, mc. is certified by CA Department of Health Servrces Laboratory#1717 <br /> *Relative Percent Difference of the spike and spike duplicate <br />' Note Analyzed by EPA 8260 and GCIMS Combination <br /> 1 <br /> Subrmtted by, <br /> ZymaX envirotechnology, inc <br /> VS21129 <br />' MSD#2 <br /> VS21129m As Michael Ng <br /> MN/sks/ccc Assistant Lab Director <br /> 7aca sin,' <br />' 805 544 4696 San Leis On sp—CA 1734 1' <br /> VV"VV Zvr,-iaXuS3 Carl fox 2225 <br />