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Oeurofins Lancaster Laboratories Analysis Report 2425 New Holland Pike,PO Box 12425,Lancaster,PA 17605-2425•717-656-2300 Fax:717-656-2681•www.lancasteriabs.com Pagel of 3 Quality Control Summary Client Name: Chevron Environmental Mgmt Co Group Number: 1356674 Reported: 12/27/12 at 10:16 PM Matrix QC may not be reported if insufficient sample or site-specific QC samples were not submitted. In these situations, to demonstrate precision and accuracy at a batch level, a LCS/LCSD was performed, unless otherwise specified in the method. All Inorganic Initial Calibration and Continuing Calibration Blanks met acceptable method criteria unless otherwise noted on the Analysis Report. Laboratory Compliance Quality Control Blank Blank Blank Report LCS LCSD LCS/LCSD Analysis Name Result LOQ** MDL Units %REC %REC Limits RPD RPD Max Batch number: B123541AA Sample number(s) : 6896877-6896879 Benzene N.D. 0.005 0.0005 mg/kg 97 92 80-120 6 30 Ethylbenzene N.D. 0.005 0.001 mg/kg 100 96 80-120 4 30 Toluene N.D. 0.005 0.001 mg/kg 95 91 80-120 4 30 Xylene (Total) N.D. 0.005 0.001 mg/kg 98 94 80-120 4 30 Batch number: 12354SLCO26 Sample number(s) : 6896877-6896879 Acenaphthene N.D. 0.0017 0.00067 mg/kg 83 73-120 Acenaphthylene N.D. 0.0017 0.00033 mg/kg 92 67-120 Anthracene N.D. 0.0017 0.00033 mg/kg 87 61-122 Benzo(a)anthracene N.D. 0.0017 0.00067 mg/kg 98 64-124 Benzo(a)pyrene N.D. 0.0017 0.00067 mg/kg 94 66-122 Benzo(b)fluoranthene N.D. 0.0017 0.00067 mg/kg 98 60-126 Benzo(g,h,i)perylene N.D. 0.0017 0.00067 mg/kg 90 66-130 Benzo(k)fluoranthene N.D. 0.0017 0.00067 mg/kg 94 65-130 Chrysene N.D. 0.0017 0.00033 mg/kg 93 66-121 Dibenz(a,h)anthracene N.D. 0.0017 0.00067 mg/kg 91 69-129 Fluoranthene N.D. 0.0017 0.00067 mg/kg 79 68-119 Fluorene N.D. 0.0017 0.00067 mg/kg 99 66-125 Indeno(1,2,3-cd)pyrene N.D. 0.0017 0.00067 mg/kg 90 66-122 1-Methylnaphthalene N.D. 0.0017 0.00067 mg/kg 91 72-120 2-Methylnaphthalene N.D. 0.0017 0.00067 mg/kg 97 57-132 Naphthalene N.D. 0.0017 0.00067 mg/kg 84 67-120 Phenanthrene N.D. 0.0017 0.00067 mg/kg 80 76-120 Pyrene N.D. 0.0017 0.00067 mg/kg 94 60-124 Batch number: 123550019A Sample number(s) : 6896877-6896879 C10-C36 N.D. 12. 4.0 mg/kg Total TPH N.D. 12. 4.0 mg/kg 93 64-122 Sample Matrix Quality Control Unspiked (UNSPK) = the sample used in conjunction with the matrix spike Background (BKG) = the sample used in conjunction with the duplicate MS MSD MS/MSD RPD BKG DUP DUP Dup RPD Analysis Name %REC %REC Limits RPD MAX Conc Conc RPD Max Batch number: 12354SLCO26 Sample number(s) : 6896877-6896879 UNSPK: 6896877 Acenaphthene 82 84 37-136 2 30 Acenaphthylene 89 90 29-133 1 30 Anthracene 85 83 73-115 2 30 *-Outside of specification **-This limit was used in the evaluation of the final result for the blank (1)The result for one or both determinations was less than five times the LOQ. (2)The unspiked result was more than four times the spike added. Page 9 of 13