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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 4 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 1082853 <br /> Reported: 04/10/08 at 06:55 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 /> Benzene N.D. 0.025 0.25 mg/kg 98 102 84-115 3 30 <br /> Toluene N.D. 0.050 0.25 mg/kg 97 102 81-116 5 30 <br /> Ethylbenzene N.D. 0.050 0.25 mg/kg 97 100 82-115 4 30 <br /> Xylene (Total) N.D. 0.050 0.25 mg/kg 97 101 82-117 4 30 <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: 080880039A Sample number(s) : 5311119-5311126 UNSPK: 5311119 <br /> Total TPH 86 86 49-123 1 20 <br /> Batch number: 08088SLD026 Sample number(s) 5311119-5311124,5311126 UNSPK: 5311119 <br /> Naphthalene 70 75 27-145 7 30 <br /> Acenaphthylene 75 74 42-141 1 30 <br /> Acenaphthene 82 84 37-145 2 30 <br /> Fluorene 87 90 51-142 3 30 <br /> Phenanthrene 86 89 18-169 3 30 <br /> Anthracene 79 79 34-161 0 30 <br /> Fluoranthene 100 103 36-165 3 30 <br /> Pyrene 79 80 37-154 0 30 <br /> Benzo(a)anthracene 82 83 48-148 1 30 <br /> Chrysene 86 88 53-138 2 30 <br /> Benzo(b)fluoranthene 83 83 42-145 0 30 <br /> Benzo(k)fluoranthene 88 89 40-156 1 30 <br /> Benzo(a)pyrene 74 74 52-131 1 30 <br /> Indeno(1,2,3-cd)pyrene 90 90 43-135 0 30 <br /> Dibenz(a,h)anthracene 92 92 31-135 0 30 <br /> Benzo(g,h,i)perylene 89 89 33-141 0 30 <br /> Batch number: 08093SLCO26 Sample number(s) 5311125 UNSPK: P313623 <br /> Naphthalene 75 81 27-145 7 30 <br /> Acenaphthylene 72 79 42-141 8 30 <br /> Acenaphthene 79 85 37-145 8 30 <br /> Fluorene 87 95 51-142 8 30 <br /> Phenanthrene 85 90 18-169 6 30 <br /> Anthracene 81 89 34-161 9 30 <br /> Fluoranthene 104 113 36-165 9 30 <br /> Pyrene 77 84 37-154 9 30 <br /> Benzo(a)anthracene 91 101 48-148 10 30 <br /> Chrysene 94 105 53-138 11 30 <br /> Benzo(b)fluoranthene 89 102 42-145 14 30 <br /> Benzo(k)fluoranthene 90 97 40-156 8 30 <br /> Benzo(a)pyrene 81 91 52-131 12 30 <br /> Indeno(1,2,3-cd)pyrene 92 101 43-135 9 30 <br /> Dibenz(a,h)anthracene 94 103 31-135 9 30 <br /> Benzo(g,h,i)perylene 90 98 33-141 9 30 <br /> Batch number: A080861AA Sample number(s) : 5311119-5311121,5311123-5311124,5311126 UNSPK: 5311119 <br /> Benzene 107 66-112 <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 />