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tiff eurof ins Lancaster Laboratories Analysis Report 2425 New Holland Pike,PO Box 12425,Lancaster,PA 17605-2425.717-656-2300 Fax:717-656-2681•W Ww.lancasterlabs.com Page 1 of 3 Quality Control Summary Client Name: Chevron Environmental Mgmt Co Group Number: 1334716 Reported: 09/29/12 at 09:58 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 UnitB %REC %REC Limits RPD RPD Max Batch number: H122571AA Sample number(s) : 6784191-6784193 Benzene N.D. 0.5 0.1 ug/l 100 96 80-120 4 30 Ethylbenzene N.D. 0.5 0.1 ug/l 107 102 80-120 5 30 Toluene N.D. 0.5 0.1 ug/l 109 104 80-120 4 30 Xylene (Total) N.D. 0.5 0.1 ug/l 107 103 80-120 4 30 Batch number: 12258WACO26 Sample number(s) : 6784191-6784192 Acenaphthene N.D. 0.0090 0.0030 ug/l 93 105 68-116 12 30 Acenaphthylene N.D. 0.0050 0.0020 ug/l 94 105 69-126 11 30 Anthracene 0.010 0.0060 0.0030 ug/l 96 109 68-122 12 30 Benzo(a)anthracene 0.0076 J 0.0090 0.0030 ug/l 81 91 80-119 it 30 Benzo(a)pyrene 0.0057 J 0.0090 0.0030 ug/l 95 105 38-127 10 30 Benzo(b)fluoranthene 0.0068 J 0.0090 0.0030 ug/l 100 110 34-136 9 30 Benzo(g,h,i)perylene 0.0075 J 0.012 0.0040 ug/l 85 93 56-135 9 30 Benzo(k)fluoranthene 0.0075 J 0.0090 0.0030 ug/l 91 102 37-130 11 30 Chrysene 0.0079 0.0050 0.0020 ug/l 73 80 65-122 9 30 Dibenz(a,h)anthracene 0.0076 J 0.0090 0.0030 ug/l 90 97 60-138 8 30 Fluoranthene 0.0097 0.0060 0.0030 ug/l 91 102 67-133 11 30 Fluorene 0.0070 0.0060 0.0030 ug/l 93 105 72-133 12 30 Indeno(1,2,3-cd)pyrene 0.0075 J 0.012 0.0040 ug/l 88 96 55-149 8 30 1-Methylnaphthalene 0.0042 J 0.012 0.0040 ug/l 83 93 64-121 12 30 2-Methylnaphthalene 0.0056 J 0.012 0.0040 ug/l 84 96 48-117 13 30 Naphthalene 0.027 0.0090 0.0030 ug/l 89 99 68-100 11 30 Phenanthrene 0.016 0.0090 0.0030 ug/l 95 104 71-124 9 30 Pyrene 0.0081 J 0.0090 0.0030 ug/l 79 88 71-114 11 30 Batch number: 122560008A Sample number(s) : 6784191-6784192 TPH-DRO water C10-C25 N.D. 100. 32 ug/l 93 97 54-122 4 20 Batch number: 122561848002 Sample number(s) : 6784191 Boron N.D. 50.0 8.3 ug/l 96 89-110 Calcium N.D. 200. 64.0 ug/l 105 90-110 Iron N.D. 200. 33.3 ug/l 102 90-112 Magnesium N.D. 100. 60.6 ug/l 100 90-110 Manganese N.D. 5.0 0.83 ug/l 104 90-110 Potassium N.D. 500. 145 ug/l 100 85-115 Sodium N.D. 1,000. 167 ug/l 101 87-114 Batch number: 12256655901A Sample number(s) : 6784191 Chloride N.D. 400. 200 ug/l 91 90-110 Nitrate Nitrogen N.D. 100. 50 ug/l 97 90-110 Nitrite Nitrogen N.D. 100. 80 ug/l 100 90-110 Sulfate N.D. 1,000. 300 ug/l 95 90-110 Batch number: 12258108101B Sample number(s) : 6784191 Kjeldahl Nitrogen N.D. 1,000. 500 ug/l 103 90-110 *-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.