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I . <br />• <br /> MATRIX ENVIRONMENTAL LABORATORIES <br /> ANALYSIS: BTEX SPIKE SUMMARY <br /> CLIENT: 8DI gagineers <br /> CONTACT: J. Wallace Date Sampled: 12/04/92 <br /> COC Na: 3657 Date Received: 12/07/92 <br /> Project No: 88=0 Acampo Date Extracted: 12/07/92 <br /> Sample ID: MB, MSD Date of Analysis: 12/07/92 <br /> Lab ID: 924170 Matrix: SOIL <br /> CONC CONC PERCENT <br /> COMPOUND SPIKED MEASURED RECOVERY <br /> MS MSD MS MSD RPD <br /> 1 <br /> BENZENE 1. 00 0.98 0.95 98$ 95% 3% <br /> TOLUENE 1. 00 0.90 0.87 90% 87% 3% <br /> ETHYL BENZENE 1. 00 <br /> 0.77 0.75 77% 75% 3% <br /> TOTAL XYLENES 3 . 00 2 .41 2. 35 80% 78% 3% <br /> MS= MATRIX SPIKE <br /> MSD= MATRIX SPIKE DUPLICATE <br /> RPD= RELATIVE PERCENT DIFFERENCE <br /> CONC= CONCENTRATION <br /> 3017 KILGORE ROAD#100 • RANCHO CORDOVA, CA 95742 PHONE (916) 635-3962 • FAX (916) 635-9331 <br />