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Page 9 of 17 <br />alscience <br />G <br />" nvironmental <br />Quality Control - Spike/Spike Duplicate <br />IF <br />aboratories, Inc. <br />Cardno ERI <br />Date Received: <br />08/26/11 <br />601 North McDowell Blvd. <br />Work Order No: <br />11-08-1795 <br />Petaluma, CA 94954-2312 <br />Preparation: <br />EPA 5030C <br />Method: <br />EPA 8260B <br />Project ExxonMobil99CAS/022789C <br />Date <br />Date <br />MS/MSD Batch <br />Quality Control Sample ID <br />Matrix <br />Instrument Prepared <br />Analyzed <br />Number <br />11-08-1977-5 <br />Solid <br />GC/MS V V 08/30/11 <br />08/30/11 <br />110830501 <br />Parameter <br />MS %REC <br />MSD %REQ %REC CL <br />RPD <br />RPD CL <br />Qualifiers <br />Benzene <br />103 <br />102 61-127 <br />1 <br />0-20 <br />Toluene <br />87 <br />61 63-123 <br />20 <br />0-20 <br />Hx <br />Methyl -t -Butyl Ether (MTBE) <br />96 <br />97 57-123 <br />1 <br />0-21 <br />Ethanol <br />88 <br />85 17-167 <br />3 <br />0-47 <br />1,1-Dichloroethene <br />98 <br />100 47-143 <br />2 <br />0-25 <br />1,2-Dichloroethane <br />100 <br />100 80-120 <br />1 <br />0-20 <br />Trichloroethene <br />104 <br />101 44-158 <br />3 <br />0-20 <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 />