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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 3 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 1082250 <br /> Reported: 04/02/08 at 10:57 AM <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 /> Anthracene 82 83 34-161 1 30 <br /> Fluoranthene 100 102 36-165 2 30 <br /> Pyrene 79 82 37-154 4 30 <br /> Benzo(a)anthracene 82 86 48-148 5 30 <br /> Chrysene 87 90 53-138 3 30 <br /> Benzo(b)fluoranthene 87 92 42-145 6 30 <br /> Benzo(k)fluoranthene 85 89 40-156 4 30 <br /> Benzo(a)pyrene 76 80 52-131 5 30 <br /> Indeno(1,2,3-cd)pyrene 86 91 43-135 5 30 <br /> Dibenz(a,h)anthracene 88 92 31-135 4 30 <br /> Benzo(g,h,i)perylene 84 87 33-141 4 30 <br /> Batch number: A080851AA Sample number(s) 5307582-5307590 UNSPK: 5307582 <br /> Benzene 93 66-112 <br /> Toluene 90 58-116 <br /> Ethylbenzene 88 54-116 <br /> Xylene (Total) 88 52-117 <br /> Surrogate Quality Control <br /> Surrogate recoveries which are outside of the QC window are confirmed <br /> unless attributed to dilution or otherwise noted on the Analysis Report. <br /> Analysis Name: Custom TPH with Ranges (soil) <br /> Batch number: 080850020A <br /> Chlorobenzene Orthoterphenyl <br /> 5307582 91 89 <br /> 5307583 89 86 <br /> 5307584 95 89 <br /> 5307585 83 83 <br /> 5307586 92 88 <br /> 5307587 88 83 <br /> 5307588 228* 157* <br /> 5307589 92 94 <br /> 5307590 87 86 <br /> Blank 100 94 <br /> DUP 88 89 <br /> LCS 98 105 <br /> MS 91 103 <br /> Limits: 37-125 47-145 <br /> Analysis Name: PAHs in soils by SIM <br /> Batch number: 08085SLE026 <br /> Nitrobenzene-d5 2-Fluorobiphenyl Terphenyl-d14 <br /> 5307582 104 93 99 <br /> 5307583 94 88 98 <br /> 5307584 94 85 97 <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 />