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Page 12 of 20 <br /> !!science <br /> =nvironmental Quality Control - LCS/LCS Duplicate <br /> Am aboratories, Inc. <br /> SAIC Date Received: N/A <br /> 1000 Broadway, Suite 675 Work Order No: 11-05-1798 <br /> Oakland, CA 94607-4099 Preparation: EPA 5030C , <br /> Method: EPA 8260B <br /> Project: TRACY PUMP STATION / 26011S154A-R10-410 <br /> Date Date LCS/LCSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> 099.12.7964,842 Solid GCIMSZ 06/04/11 06104/11 1106041-03 <br /> Parameter LCS%REC -CSD%REC %REC CL RPD RPD CL Qualifiers <br /> Benzene 90 87 78-120 4 0-20 <br /> Ethylbenzene 98 94 76-120 4 0-20 <br /> Toluene 93 91 77-120 3 0-20 <br /> RPD <br /> ����u V`/• V-'`/ "Relative Percent Difference CL-Control Limit <br /> 7440 Lincoln Way, Garden Grove, CA 92841-1427 . TEL:(714) 895-5494 . FAX: (714) 894-7501 <br />