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Page 22 of 34 <br />ti•} e u rof I ns Quality Control - Spike/Spike Duplicate <br />I Calscience <br />Cardno ERI Date Received: 02/07/15 <br />601 North McDowell Blvd. Work Order: 15-02-0565 <br />Petaluma, CA 94954-2312 Preparation: EPA 5030C <br />Method: EPA 8260B <br />Project: ExxonMobil 99CAS/022789C Page 3 of 3 <br />Quatity Control Sample ID <br />Type <br />Matrix <br />Instrument <br />Date Prepared <br />Date Analyzed MS/MSD Batch Number <br />W-30•MW1 <br />somplu <br />Aqueous <br />GC1M5 T <br />02)12115 <br />M20518:40 15D212S034 <br />W-30-MYU1 <br />Matrix Spike <br />Aquuous <br />GGWS T <br />0212115 <br />02A205 19:11 160212S034 <br />W-HAAWi <br />Matrix 5plke D.upilcatc <br />AqueDus <br />GCIMS T <br />02: 1205 <br />02OW15 19:42 15D212S03.4 <br />Parameter <br />Benzene <br />Toluene <br />Ethylbenzene <br />o -Xylene <br />p/m-Xylene <br />Methyl -t -Butyl Ether (MTBE) <br />Tert-Butyl Alcohol (TBA) <br />Diisopropyl Ether (DIPE) <br />Ethyl -t -Butyl Ether (ETBE) <br />Tert-Amyl-Methyl Ether (TAME) <br />1,2-Dibromoethane <br />1,2-Dichloroethane <br />Sample <br />aum <br />IVIS <br />MS <br />MSD <br />MSD <br />° Rec. CL <br />RPD <br />RPD CL Qualifiers <br />Conc. <br />Added <br />Conc. <br />%Rec. <br />Conc. <br />° Rec. <br />ND <br />10.00 <br />9.713 <br />97 <br />9.939 <br />99 <br />75-125 <br />2 <br />0-20 <br />ND <br />10.00 <br />10.31 <br />103 <br />10.61 <br />106 <br />75-125 <br />3 <br />0-20 <br />ND <br />10.00 <br />10.82 <br />108 <br />11.35 <br />114 <br />75-125 <br />5 <br />0-20 <br />ND <br />10.00 <br />11.61 <br />116 <br />12.07 <br />121 <br />75-127 <br />4 <br />0-20 <br />ND <br />20.00 <br />22.22 <br />111 <br />23.26 <br />116 <br />75-125 <br />5 <br />0-20 <br />ND <br />10.00 <br />9.755 <br />98 <br />10.23 <br />102 <br />71-131 <br />5 <br />0-20 <br />ND <br />50.00 <br />58.50 <br />117 <br />60.20 <br />120 <br />20-180 <br />3 <br />0-40 <br />ND <br />10.00 <br />10.79 <br />108 <br />11.10 <br />111 <br />64-136 <br />3 <br />0-20 <br />ND <br />10.00 <br />10.19 <br />102 <br />10.76 <br />108 <br />73-133 <br />5 <br />0-20 <br />ND <br />10.00 <br />9.902 <br />99 <br />10.10 <br />101 <br />75-125 <br />2 <br />0-20 <br />ND <br />10.00 <br />9.959 <br />100 <br />10.32 <br />103 <br />75-126 <br />4 <br />0-20 <br />ND <br />10.00 <br />9.954 <br />100 <br />9.966 <br />100 <br />75-127 <br />0 <br />0-20 <br />RPD: Relative Percent Difference. CL: Control Limits <br />7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL: (714) 895-5494 • FAX: (714) 894-7501 <br />