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Page 14 of 36 <br /> a <br /> Gi alscience _ <br /> nvironmental Analytical Report <br /> aboratories Inc. �%mom ' <br /> Cardno ERI Date Received: 03/17/12 <br /> 601 North McDowell Blvd. Work Order No: 12-03-1242 <br /> Petaluma, CA 94954-2312 Preparation: EPA 5030C <br /> Method: EPA 8260B <br /> Units: ug/L <br /> Project: ExxonMobil 99CAS/022789C Page 4 of 6 <br /> Lab Sample Date/Time Date Date/Time <br /> Client Sample Number Numb-er Collected Matrix Instrument Prepared Analyzed QC Batch ID <br /> [W7 32-DW2 — 12-03-1242-10-C 03114/12 Aqueous GUMS L 03/26/12 03/26/12 121326L01 <br /> 19:00 16:11 J <br /> Parameter Result RL DF Qual Parameter Result RL DF Qual <br /> Benzene 8.3 0.50 1 Diisopropyl Ether(DIPE) ND 0.50 1 U <br /> Toluene 3.1 0.50 1 Ethyl-t-Butyl Ether(ETBE) ND 0.50 1 U <br /> Ethylbenzene 1.9 0.50 1 Tert-Amyl-Methyl Ether(TAME) ND 0.50 1 U <br /> Xylenes(total) 4.8 0.50 1 1,2-Dibromoethane ND 0.50 1 U <br /> Methyl-t-Butyl Ether(MTBE) ND 0.50 1 U 1,2-Dichloroethane ND 0.50 1 U <br /> Tert-Butyl Alcohol(TBA) ND 5.0 1 U <br /> Surrogates: REC M Control Qua[ Sun-oaates: REC % Control Qual <br /> Limits Limits <br /> 1,4-Bromofluorobenzene 96 68-120 Dibromofluoromethane 106 80-127 <br /> 1,2-Dichloraethane-d4 107 80-128 Toluene-d8 98 80-120 <br /> W-33-DW3 12-03-1242-11-B 03/15/12 Aqueous GUMS L 03/24/12 03/25/12 1203241IL02 <br /> 08:35 05:28 <br /> Parameter Result RL DFQua] Parameter Result RL DF Qual <br /> Benzene 75 50 100 Diisopropyl Ether(DIPE) ND 50 100 U <br /> Toluene ND 50 100 U Ethyl-t-Butyl Ether(ETBE) ND 50 100 U <br /> Ethylbenzene ND 50 100 U Tert-Amyl-Methyl Ether(TAME) ND 50 100 u <br /> Xylenes(total) ND 50 100 U 1,2-Dibromoethane ND 50 100 U <br /> Methyl-t-Butyl Ether(MTBE) ND 50 100 U 1,2-Dichloroethane ND 50 100 U <br /> Tert-Butyl Alcohol(TBA) ND 500 100 U <br /> Surrogates: REC M Control QA Surrogates: REC(% Control Qual <br /> Lmila Limits <br /> 1,4-Bromofluorobenzene 98 68-120 Dibromofluoromethane 107 80-127 <br /> 1,2-Dichloroethane-d4 110 80-128 Toluene-d8 95 80-120 <br /> W-32-DW4 12-03-1242-12-B 03/14/12 Aqueous GC/MS L 03/24/12 03/25/12 120324L02 <br /> 16:45 05:56 <br /> Parameter Result RL DF Qua/ Paramete Result RL 2E Qal <br /> Benzene 6.4 0.50 1 Diisopropyl Ether(DIPE) ND 0.50 1 U <br /> Toluene 2.0 0.50 1 Ethyl-t-Butyl Ether(ETBE) ND 0.50 1 U <br /> Ethylbenzene 1.4 0.50 1 Tert-Amyl-Methyl Ether(TAME) ND 0.50 1 U <br /> Xylenes(total) 3.1 0.50 1 1,2-Dibromoethane ND 0.50 1 U <br /> Methyl4-Butyl Ether(MTBE) ND 0.50 1 U 1,2-Dichloroethane ND 0.50 1 U <br /> Tert-Butyl Alcohol(TBA) ND 5.0 1 U <br /> Surrogates: REC f%1 Control Qual Surrogates: REC M Control ua <br /> Limits Limits <br /> 1,4-Bromofluorobenzene 94 68-120 Dibromofluoromethane 104 80-127 <br /> 1,2-Dichloroethane-d4 105 80-128 Toluene-d8 98 80-120 <br /> RL-Reporting Limit DF-Dilution Factor Qual-Qualifiers <br /> 7440 Lincoln Way, Garden Grove, CA 92841-1427 • TEL:(714)895-5494 FAX: (714)894-7501 <br />