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MATRIX ENVIRONMENTAL LABORATORIES <br /> ' ANALYSIS: BTEX SPIKE SUMMARY <br /> ' CLIENT: Walsh & Associates <br /> CONTACT: J. Clayton Date Sampled: N/A <br /> COC No: 4064 Date Received: N/A <br /> ' Project No: 1685-010 Date Extracted: 8/12/93 <br /> Sample ID: N/A Date of Analysis: 8/18/93 <br /> Lab ID: LCS/LCSD Matrix: SOIL <br /> CONC CONC PERCENT <br /> ' COMPOUND <br /> SPIKED MEASURED RECOVERY <br /> mg/kg LCS LCSD LCS LCSD RPD <br /> (PPM) <br /> BENZENE 1.25 1 . 15 1,08 92% 87% 6-% <br /> TOLUENE 1.25 1 . 12 1. 07 90% 85% 5% <br /> ETHYL BENZENE 1.25 1. 10 I..O <br /> 8 86% 86% 2% <br /> iTOTAL XYLENES 3 .75 3 . 31 3 .23 88% 86% 3% <br /> SURROGATE RECOVERY 97% 95% ACCEPTABLE RANGE <br /> ' 70% TO 130% <br /> LCS= LABORATORY CONTROL SPIKE <br /> LCSD= LABORATORY CONTROL SPIKE DUPLICATE <br /> RPD= RELATIVE PERCENT DIFFERENCE <br /> CONC= CONCENTRATION <br /> 1 <br /> ' 3G1� ClECCFF �iQAD R' 0 • ; ,i�JCH0 CC,PECV,% "',A S-57-,` P-CME i5'n; �35 .;?02 • FAX �G 61 <br />