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MATRIX ENVIRONMENTAL LABORATORIES <br /> ANALYSIS REPORT <br /> I <br /> Date Samples Received: �10/16/91 P.O. No: Teichert-Clements <br /> Date_ of 'Analysis: 10/18/91 CT ID: 3029 <br /> Sample ID: Ex-7 <br /> Lab ID: `913811 <br /> Matrix: `SOIL <br /> f <br /> BTEX MATRIX SPIKE SUMMARY <br /> CONC :` CONC PERCENT <br /> { <br /> COMPOUND SPIKED MEASURED RECOVERY RPD <br /> k MS MSD MS MSD <br /> L i <br /> f <br /> BENZENE 1. 25 0. 63 0. 67 50% 54% 6% <br /> TOLUENE 1.25 . 0. 94 0. 99 75% 79% <br /> 5% <br /> ETHYL BENZENE 1.25 1 1. 06 80% 85% 6% <br /> TOTAL XYLENES 3 .75 3 .37 3 . 55 90% 95% - 5%. <br /> MS= MATRIX SPIKE <br /> MSD= MATRIX SPIKE DUPLICATE <br /> RPD= RELATIVE PERCENT DIFFERENCE <br /> CONC= CONCENTRATION <br /> i <br /> 3017 KILGORE ROAD #110 + RANCHO CORDOVA. CA 95742 PHONE (916) 635-3962 • FAX (916) 635-9331 <br />