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• <br /> MATRIX ENVIRONMENTAL LABORATORIES <br /> • <br /> ANALYSIS: BTEX SPIKE SUMMARY <br /> CLIENT: Resaa <br /> CONTACT: C. Avila Date Sampled: N/A <br /> COC No: 4020 Date Received: N/A <br /> Project No: #123009.01/RESNA Date Extracted: N/A <br /> Sample ID: N/A Date of Analysis: 7/16/93 <br /> Lab ID: LCS/LCSD Matrix: WATER <br /> CONC CONC PERCENT <br /> COMPOUND SPIKED MEASURED RECOVERY <br /> ug/L LCS LCSD LCS LCSD RPD <br /> _._—. (ppb) <br /> BENZENE 20. 17.24 17. 97 86% 90$ 4% <br /> TOLUENE 20. 17.05 17. 59 85% 88% 3% <br /> • <br /> ETHYL BENZENE 20. 16.64 17 . 52 83% 88% 5% <br /> TOTAL XYLENES 60. 50.59 52 . 57 84% 88% 4% <br /> • <br /> LCS= LABORATORY CONTROL SPIKE <br /> LCSD= LABORATORY CONTROL SPIKE DUPLICATE <br /> RPD= RELATIVE PERCENT DIFFERENCE <br /> CONC= CONCENTRATION <br /> • <br />