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tiff eurofins 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: 1339270 Reported: 10/15/12 at 11:01 AM 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 LOO** MDL Units %REC %REC Limits RPD RPD Max Batch number: C122771AA Sample number(s) : 6807887-6807889 Benzene N.D. 0.5 0.1 ug/l 98 80-120 Ethylbenzene N.D. 0.5 0.1 ug/l 96 80-120 Toluene N.D. 0.5 0.1 ug/l 95 80-120 Xylene (Total) N.D. 0.5 0.1 ug/l 94 80-120 Batch number: 12277WAJO26 Sample number(s) : 6807888-6807889 Acenaphthene N.D. 0.0090 0.0030 ug/l 97 94 68-116 3 30 Acenaphthylene 0.0041 J 0.0050 0.0020 ug/l 113 109 69-126 4 30 Anthracene 0.68 0.0060 0.0030 ug/l 113 109 68-122 3 30 Benzo(a)anthracene 0.029 0.0090 0.0030 ug/l 102 100 80-119 2 30 Benzo(a)pyrene 0.022 0.0090 0.0030 ug/l 105 104 38-127 0 30 Benzo(b)fluoranthene 0.030 0.0090 0.0030 ug/l 108 106 34-136 1 30 Benzo(g,h,i)perylene 0.012 J 0.012 0.0040 ug/l 85 85 56-135 1 30 Benzo(k)fluoranthene 0.014 0.0090 0.0030 ug/l 97 97 37-130 1 30 Chrysene 0.060 0.0050 0.0020 ug/l 77 76 65-122 2 30 Dibenz(a,h)anthracene 0.0032 J 0.0090 0.0030 ug/l 94 92 60-138 2 30 Fluoranthene 0.042 0.0060 0.0030 ug/l 105 103 67-133 2 30 Fluorene 0.053 0.0060 0.0030 ug/l 102 99 72-133 3 30 Indeno(1,2,3-cd)pyrene 0.0099 J 0.012 0.0040 ug/l 92 91 55-149 1 30 1-Methylnaphthalene N.D. 0.012 0.0040 ug/l 87 84 64-121 4 30 2-Methylnaphthalene 0.0091 J 0.012 0.0040 ug/l 95 92 48-117 3 30 Naphthalene 0.0090 J 0.0090 0.0030 ug/l 95 92 68-100 4 30 Phenanthrene 0.082 0.0090 0.0030 ug/l 102 99 71-124 3 30 Pyrene 0.027 0.0090 0.0030 ug/l 85 82 71-114 3 30 Batch number: 122770027A Sample number(s) : 6807888-6807889 TPH-DRO water C10-C25 82 J 100. 32 ug/l 90 98 54-122 9 20 Batch number: 122860020A Sample number(s) : 6807888-6807889 TPH-DRO water C10-C25 w/Si Gel 63 J 100. 32 ug/l 88 82 45-114 7 20 Sample Matrix Quality Control Unspiked (UNSPK) = the sample used in conjunction with the matrix spike Background (EKG) = the sample used in conjunction with the duplicate MS MSD MS/MSD RPD BRG DUP DUP Dup RPD Analysis Name %REC %REC Limits RPD MAX Conc Conc RPD Max Batch number: C122771AA Sample number(s) : 6807887-6807889 UNSPK: P806381 Benzene 98 96 87-126 2 30 Ethylbenzene 95 94 80-140 2 30 *-Outside of specification **-This limit was used in the evaluation of the final result for the blank (l)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.