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&, alscience <br />A_ nvironmental <br />Aw 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 2 of 43 <br />05/26/11 <br />11-05-1637 <br />EPA 3510C <br />EPA 8015B (M) <br />Project: ExxonMobil 99CAS/022789C Page 1 of 5 <br />Lab Sample Date/Time Date Daterrime <br />Client Sample Number Number Collected Matrix Instrument Prepared Analyzed QC Batch ID <br />W 33-MW1 11-05-1637-1-G 05/18111 Aqueous GC 45 05126111 05127/11 110526B08 <br />13:55 06:14 <br />Comment(s): -Sample received after recommended holding time. <br />-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 1 U ug/L <br />Surrogates: REC Control Limits Qual <br />Decachlorobiphenyl 89 68-140 <br />W-33-MW2 11-05-1637-2-G 05119111 Aqueous GC 45 05126111 05/27/11 110526808 <br />13:00 06:29 <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 1100 50 1 ug/L <br />Surrogates: REC °° Control Limits Qual <br />Decachlorobiphenyl 91 68-140 <br />W-32-MW3 11-05-1637-3-G 05119111 Aqueous GC 45 05/26/11 05/27/11 110526B08 <br />09:40 06:45 <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 ND 50 1 U ug/L <br />Surrogates: REC (%1 Control Limits Qual <br />Decachlorobiphenyl 92 68-140 <br />RL -Reporting Limit , DF - Dilution Factor , Qual - Qualifiers <br />&" 7440 Lincoln Way, Garden Grove, CA 92841-1427 9 TEL:(714) 895-5494 9 FAX: (714) 894-7501 <br />