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Page 20 of 28 <br /> a/science <br /> A�-nvironmenta/ Quality Control - LCS/LCS Duplicate <br /> 1 aboratories, Inc. - � w <br /> SECOR International Inc. Date Received: N/A <br /> r 3017 Kilgore Road, Suite 100 Work Order No: 06-05-1415 <br /> Rancho Cordova, CA 95670-6150 Preparation: EPA 5030B <br /> Method: DHS LUFT/EPA 8021 B <br /> Project: 401 French Cam Rd French Cam CA <br /> 1 P � p, <br /> Date. Date LCS/LCSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> - <br /> 71 <br /> 098-01-002-4,777 Solid GC 21 05/25/05._ OS/25/06'. 06052b601 . <br /> Parameter LCS%REC LCSD%REC %REC CL RPD RPD CL Qualifiers <br /> Benzene 104 101 70-118 3 0-7 <br /> Toluene 95 93 .71-107 2 0-8 <br /> Ethylbenzene 101 99 66-120 2 0-7 <br /> p/m-Xylene 107 104 66-120 3 0-8 <br /> o-Xylene 93 91 66-114 2 0-9 <br /> Methyl-t-Butyl Ether(MTBE) 108 107 70-112 1 0-12 <br /> TPH as Gasoline 84 82 70-124 2 0-18 <br /> L � - <br /> L <br /> II <br /> RPD-Relative Percent Difference, CL-Control Limit <br /> 7440 Lincoln Way, Garden Grove, CA 92841-1427 . TEL:(714) 895-5494 . FAX: (714) 894-7501 <br />