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Page 21 of 34 <br />ti•} eurofins Quality Control - Spike/Spike Duplicate <br />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 2 of 3 <br />Qualify Control Sample ID <br />Type <br />Matrix <br />Instrument <br />Date Prepared <br />Date Analyzed MS/MSD Batch Number <br />W-3G-r.1W2 <br />sample <br />Aqueous <br />GUMS L <br />021/4115 <br />02;14115 13:03 150214Si103 <br />Vl-36.1.1VJ2 <br />Mairix Splko <br />Aquoous <br />GCIMS L <br />02A4115 <br />02x14115 19:03 150214SOOB <br />W-30-NIV12 <br />Matrix 5plke Dupllcale <br />Aqueous <br />GC,MS L <br />02;;415 <br />02.14,15 19:32 1502145048 <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 />Sam le <br />Snike <br />UMS, <br />MS <br />MSD <br />MSD <br />° Rec. CL <br />RPD <br />RPD CL Qualifier: <br />Conc. <br />Added <br />Conc. <br />° RRe . <br />Conc. <br />° Re . <br />3.800 <br />10.00 <br />13.32 <br />95 <br />13.92 <br />101 <br />75-125 <br />4 <br />0-20 <br />0.6581 <br />10.00 <br />10.94 <br />103 <br />11.13 <br />105 <br />75-125 <br />2 <br />0-20 <br />ND <br />10.00 <br />10.65 <br />106 <br />10.81 <br />108 <br />75-125 <br />1 <br />0-20 <br />0.8522 <br />10.00 <br />12.21 <br />114 <br />12.25 <br />114 <br />75-127 <br />0 <br />0-20 <br />ND <br />20.00 <br />21.54 <br />108 <br />21.56 <br />108 <br />75-125 <br />0 <br />0-20 <br />24.62 <br />10.00 <br />36.41 <br />118 <br />38.73 <br />141 <br />71-131 <br />6 <br />0-20 HX <br />40.57 <br />50.00 <br />83.94 <br />87 <br />93.76 <br />106 <br />20-180 <br />11 <br />0-40 <br />ND <br />10.00 <br />10.48 <br />105 <br />11.15 <br />111 <br />64-136 <br />6 <br />0-20 <br />ND <br />10.00 <br />10.65 <br />107 <br />11.11 <br />111 <br />73-133 <br />4 <br />0-20 <br />ND <br />10.00 <br />10.69 <br />107 <br />11.12 <br />111 <br />75-125 <br />4 <br />0-20 <br />ND <br />10.00 <br />10.61 <br />106 <br />10.80 <br />108 <br />75-126 <br />2 <br />0-20 <br />0.5367 <br />10.00 <br />10.36 <br />98 <br />10.08 <br />95 <br />75-127 <br />3 <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 />