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MATRIX ENVIRONMENTAL LABORATORIES <br /> ANALYSIS BTEX SPIKE SUMMARY <br /> CLIENT: Resna Industries <br /> CONTACT: J. Johnson Date Sampled: N/A <br /> CDC No: 4007 Date Received: N/A <br /> Pro3ect No: TIECHERT/TRACY Date Extracted: 7/12/93 <br /> Sample ID: N/A Date of Analysis: 7/12/93 <br /> Lab ID: LCS/LCSD Matrix: SOIL <br /> CONC CONC PERCENT <br /> COMPOUND SPIKED MEASURED RECOVERY <br /> mg/kg LCS LCSD LCS. LCSD RPD <br /> (Ppm) <br /> BENZENE 1. 0. 90 0.97 90% 97% 85% <br /> TOLUENE 1. 0.76 0.82 76% 82% 7% <br /> ETHYL BENZENE 1. 0. 86 0.93 86% 93% 8% <br /> TOTAL XYLENES 3 . 2 . 47 2 . 63 82% 88% 6% <br /> LCS= LABORATORY CONTROL SPIKE <br /> LCSD= LABORATORY CONTROL SPIKE DUPLICATE <br /> RPD= RELATIVE PERCENT DIFFERENCE <br /> CONC= CONCENTRATION <br /> r <br /> i <br /> 3017 KILGORE ROAD n 10 • RANCHO CORDOVA CA 95742 PHONE (916) 6353-c62 • PAX (9161 635-9331 <br />