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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: 1105968 <br /> Reported: 08/28/08 at 11:06 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 /> Acenaphthylene 70 72 42-141 2 30 <br /> Acenaphthene 79 76 37-145 4 30 <br /> Fluorene 88 83 51-142 6 30 <br /> Phenanthrene 84 82 42-144 2 30 <br /> Anthracene 82 76 34-161 7 30 <br /> Fluoranthene 87 81 26-166 7 30 <br /> Pyrene 81 81 37-154 0 30 <br /> Benzo(a)anthracene 86 83 25-166 3 30 <br /> Chrysene 84 82 14-174 2 30 <br /> Benzo(b)fluoranthene 95 93 17-182 2 30 <br /> Benzo(k)fluoranthene 87 83 40-156 6 30 <br /> Benzo(a)pyrene 93 89 34-156 5 30 <br /> Indeno(1,2,3-cd)pyrene 93 87 8-164 7 30 <br /> Dibenz(a,h)anthracene 94 88 16-159 7 30 <br /> Benzo(g,h,i)perylene 91 83 33-141 9 30 <br /> Batch number: A082341AB Sample number(s) : 5444433-5444435 UNSPK: P444675 <br /> Benzene 118* 66-112 <br /> Toluene 117* 58-116 <br /> Ethylbenzene 117* 54-116 <br /> Xylene (Total) 114 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: 082330007A <br /> Chlorobenzene Orthoterphenyl <br /> 5444433 109 88 <br /> 5444434 111 91 <br /> 5444435 112 88 <br /> 5444436 159* 143* <br /> Blank 116 92 <br /> LCS 154* 97 <br /> MS 159* 97 <br /> MSD 147* 93 <br /> Limits: 37-125 59-129 <br /> Analysis Name: PAHs in soils by SIM <br /> Batch number: 08233SLCO26 <br /> Nitrobenzene-d5 2-Fluorobiphenyl Terphenyl-d14 <br /> 5444433 78 83 87 <br /> 5444434 87 94 102 <br /> 5444435 82 86 98 <br /> 5444436 129 110 85 <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 />