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Page 8 of 16 <br /> alscience <br /> nWronmental Quality Control - Spike/Spike Duplicate <br /> Aw aboratories, Inc. <br /> STANTEC Date Received: 12/14/10 <br /> 3017 Kilgore Road, Suite 100 Work Order No: 10-12-1103 <br /> Rancho Cordova, CA 95670-6141 Preparation: EPA 5030C <br /> Method: EPA 82608 <br /> Prosect ARCO Service Station No. 6080 <br /> Date Date MS/MSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> SP-1(A,B,C,D) Solid GC1MS Z 12/14/10 12/15/10 101215501 <br /> Parameter MS%REC MSD%REC %REC CL RPD RPD CL Qualifiers <br /> Benzene 85 82 61-127 4 0-20 <br /> Chloroform 96 94 80-120 3 0-20 <br /> 1,1-Dichloroethane 95 91 80-120 4 0-20 <br /> 1,2-Dichloroethane 102 102 80-120 1 0-20 <br /> 1,1-Dichloroethene 95 92 47-143 3 0-25 <br /> Ethanol 77 80 17-167 5 0-47 <br /> Tetrachloroethene 140 140 80-120 0 0-20 <br /> Toluene 84 81 63-123 4 0-20 <br /> Trichloroethene 102 99 44-158 2 0-20 <br /> Methyl-t-Butyl Ether(MTBE) 91 90 57-123 2 0-21 <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 />