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Lancaster <br /> Laboratories Analysis Report <br /> 2425 New Holland Pike,PO Box 12425,Lancaster,PA 17605-2425-717-656-2300 Fax:717-656-2681•www.larcasterIabs.com <br /> Page 2 of 5 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 1084091 <br /> Reported: 04/15/08 at 01:17 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL** Loo Units %REC %REC Limits RPD RPD Max <br /> Batch number: Q080941AA Sample number(s) : 5318601-5318604,5318606,5318608-5318609 <br /> Benzene N.D. 0.025 0.25 mg/kg 96 84-115 <br /> Toluene N.D. 0.050 0.25 mg/kg 98 81-116 <br /> Ethylbenzene N.D. 0.050 0.25 mg/kg 92 82-115 <br /> Xylene (Total) N.D. 0.050 0.25 mg/kg 95 82-117 <br /> Sample Matrix Quality Control <br /> Unspiked (UNSPK) = the sample used in conjunction with the matrix spike <br /> Background (BKG) = the sample used in conjunction with the duplicate <br /> MS MSD MS/MSD RPD BKG DUP DUP Dup RPD <br /> Analysis Name %REC %REC Limits RPD MAX Conc Conc RPD Max <br /> Batch number: 08098SLHO26 Sample number(s) : 5318601-5318613 UNSPK: P316201 <br /> Naphthalene 84 85 27-145 1 30 <br /> Acenaphthylene 91 94 42-141 3 30 <br /> Acenaphthene 87 89 37-145 1 30 <br /> Fluorene 91 91 51-142 1 30 <br /> Phenanthrene 89 91 18-169 2 30 <br /> Anthracene 89 92 34-161 3 30 <br /> Fluoranthene 92 95 36-165 3 30 <br /> Pyrene 87 87 37-154 0 30 <br /> Benzo(a)anthracene 89 89 48-148 0 30 <br /> Chrysene 92 92 53-138 1 30 <br /> Benzo(b)fluoranthene 90 90 42-145 0 30 <br /> Benzo(k)fluoranthene 88 93 40-156 5 30 <br /> Benzo(a)pyrene 89 91 52-131 2 30 <br /> Indeno(1,2,3-cd)pyrene 104 110 43-135 5 30 <br /> Dibenz(a,h)anthracene 104 107 31-135 3 30 <br /> Benzo(g,h,i)perylene 94 93 33-141 0 30 <br /> Batch number: 080990020A Sample number(s) : 5318601-5318613 UNSPK: P320503 BKG: P320503 <br /> Total TPH 88 49-123 N.D. 7.0 200* (1) 20 <br /> C10-C36 N.D. N.D. 0 (1) 20 <br /> Batch number: 080990041A Sample number(s) 5318614-5318619 UNSPK: 5318614 BKG: 5318614 <br /> Total TPH 84 49-123 N.D. N.D. 0 (1) 20 <br /> C10-C36 N.D. N.D. 0 (1) 20 <br /> Batch number: 08099SLCO26 Sample number(s) 5318614-5318619 UNSPK: 5318614 <br /> Naphthalene 72 50 27-145 36* 30 <br /> Acenaphthylene 76 62 42-141 20 30 <br /> Acenaphthene 76 61 37-145 21 30 <br /> Fluorene 78 71 51-142 8 30 <br /> Phenanthrene 64 107 18-169 24 30 <br /> Anthracene 81 81 34-161 0 30 <br /> Fluoranthene 78 119 36-165 23 30 <br /> Pyrene 81 106 37-154 17 30 <br /> Benzo(a)anthracene 82 91 48-148 8 30 <br /> Chrysene 87 91 53-138 4 30 <br /> Benzo(b)fluoranthene 86 93 42-145 7 30 <br /> Benzo(k)fluoranthene 87 84 40-156 3 30 <br /> *-Outside of specification <br /> **-This limit was used in the evaluation of the final result for the blank <br /> (1)The result for one or both determinations was less than five times the LOQ. <br /> (2)The unspiked result was more than four times the spike added. <br />