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Lr=11science <br />A._ nvironmental <br />aboratories, Inc. <br />Cardno ERI <br />601 North McDowell Blvd. <br />Petaluma, CA 94954-2312 <br />Analytical Report <br />Date Received: <br />Work Order No: <br />Preparation: <br />Method: <br />Page 4 of 43 <br />r <br />05/26/11 <br />11-05-1637 <br />EPA 3510C <br />EPA 8015B (M) <br />Project: ExxonMobil 99CAS/022789C <br />Page 3 of 5 <br />Lab Sample Date/Time <br />Date <br />Date/Time <br />Client Sam le Number Number Collected Matrix <br />Instrument Prepared <br />Analyzed QC Batch ID <br />W-34-DW1 <br />11-05-1637-8-G 05/19/11 Aqueous <br />GC 45 05126/11 <br />05127111 110526608 <br />12:10 <br />11:08 <br />Comment(s): <br />-The sample chromatographic pattern for TPH does not match the chromatographic pattern of the specified standard. Quantitation <br />of the unknown hydrocarbon(s) in the sample was based upon the specified standard. <br />-The sample extract was subjected to Silica Gel treatment prior to analysis. <br />Parameter <br />Result RL DF Qual <br />Units <br />TPH as Diesel <br />94 50 1 <br />ug/L <br />Surrogates: <br />REC % Control Limits Qual <br />Decachlorobiphenyl <br />88 68-140 <br />W-33-DW2 11-05-1637-9-G 05119/11 Aqueous GC 45 05/26111 05127/11 110526608 <br />09:10 08:17 <br />Comment(s): -The sample chromatographic pattern for TPH does not match the chromatographic pattern of the specified standard. Quantitation <br />of the unknown hydrocarbon(s) in the sample was based upon the specified standard <br />-The sample extract was subjected to Silica Gel treatment prior to analysis. <br />Parameter Result RL DF Qual Units <br />TPH as Diesel 73 50 1 ug/L <br />Surrogates: REC ° Control Limits Qual <br />Decachlorobiphenyl 94 68-140 <br />J W-34-DW3 11.05-1637-10-G 05119/11 Aqueous GC 45 05/26111 05/27/11 1105261308 <br />10:35 08:32 <br />Comment(s): -The sample extract was subjected to Silica Gel treatment prior to analysis. <br />Parameter Result RL DF Qual Units <br />TPH as Diesel ND 50 t IJ ug/L <br />Surrogates: REC (%) Control Limits Qual <br />Decachlorobiphenyl 103 68-140 <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 />