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Page 19 of 37 <br /> talscience <br /> fZ ilvironmental Quality Control - Spike/Spike Duplicate <br /> am aboratories, Inc. <br /> SAIC Date Received: 05/04/11 <br /> 1000 Broadway, Suite 675 Work Order No: 11-05-0194 <br /> ' Oakland, CA 94607-4099 Preparation: EPA 5030C <br /> Method: EPA 8260B <br /> Project TRACY PUMP STATION / 26011S154A-R10-410 <br /> Date Date MS/MSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> S13-28.9' Solid GC/MS Z 05104/11 05104/11 110504501 <br /> Parameter MS%REC MSD%REC %REC CL RPD RPD CL Qualifiers <br /> Benzene 94 89 61-127 5 0-20 <br /> Ethylbenzene 96 90 57-129 6 0-22 <br /> ' Toluene 93 88 63-123 5 0-20 <br /> RPD-Relative Percent Difference, CL-Control Limit <br /> 1^ �� 1� 7440 Lincoln Way, Garden Grove, CA 92841-1427 . TEL:(714) 895-5494 FAX: (714)894-7501 <br /> i <br />