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Page 21 of 34 <br /> jw a/science <br /> i. nvironmenta/ Quality Control - Spike/Spike Duplicate <br /> Inw aboratories, Inc. <br /> Blaine Tech Services, Inc. <br /> 1680 Rogers Avenue Date Received: 12/07/10 <br /> San Jose, CA 95112-1105 Work Order No: 10-12-0496 <br /> Preparation: EPA 5030C <br /> Method: LUFT GC/MS / EPA <br /> Prosect 3515 Navy Drive, Stockton, CA 8260B <br /> Quality Control Sample ID Date Date <br /> Matrix Instrument MS/MSD Batch <br /> 4W-26 Prepared Analyzed Number <br /> Aqueous GC/MS PP - 12/10110 12/10/10 i 161216801 <br /> Parameter %REC/oREC MSD%REC %REC CL RPD RPD CL <br /> Qualifiers <br /> Benzene <br /> Ethylbenzene 93 97 78-120 5 0-20 <br /> Toluene 98 102 73-127 4 0-20 <br /> Methyl-t-Butyi Ether(MTBE) 96 101 72-126 5 <br /> 0-20 <br /> Tert-Butyl Alcohol(TBA) 93 95 69-123 3 0-20 <br /> Ditsopropyl Ether(DIPE) 86 65 65-131 1 <br /> 0-22 <br /> 98 <br /> Elhyl-t-Butyl Ether(ETBE) 101 68-128 3 0-22 <br /> Tert-Amyl-Methyl Ether(TAME) 96 100 69-123 3 0-21 <br /> 95 99 70-124 q <br /> 0-20 <br /> "RPDelative percent DiRerence CL-Control Limit <br /> 7440 Lincoln Way, Garden Grove, CA 92841-1427 , TEL: 71 <br /> ( 4) 895-5494 . FAX: (714) 894-7501 <br />