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� MATRIX ENVIRONMENTAL LABORATORIES <br /> ANALYSIS: BTEX SPIKE SUMMARY <br /> CLIENT: Western aw <br /> CONTACT: V. Bennett Date Sampled: N/A <br /> COC No: 4004 df� Date Received: N/A <br /> Project No: WEGE/USA Date Extracted: N/A <br /> Sample ID: N/A Date of Analysis: 7/13/93 <br /> Lab ID: LCS/LCSD Matrix: WATER <br /> CONC CONC PERCENT <br /> COMPOUND SPIKED MEASURED RECOVERY <br /> UVL LCS LCSD LCS LCSD RPD <br /> _(1212b <br /> BENZENE 20. 18 .80 19. 23 94% 96$ <br /> 2$ <br /> TOLUENE 20. 18 . 58 18 . 93 93% 95$ 2%- <br /> ETHYL <br /> $ETHYL BENZENE 20. 18. 42 18. 73 92$ 94$ 2$ <br /> TOTAL XYLENES 60. 55. 64 56.21 93$ 94$ 1$ <br /> LCS= LABORATORY CONTROL SPIKE <br /> LCSD= LABORATORY CONTROL SPIKE DUPLICATE <br /> RPD= RELATIVE PERCENT DIFFERENCE <br /> CONC= CONCENTRATION <br />