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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: 982240 <br /> Reported: 03/22/06 at 04:30 PM <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 99 98 69-129 2 30 <br /> Acenaphthene 90 94 26-149 5 30 <br /> Fluorene 99 97 68-116 2 30 <br /> Phenanthrene 97 96 62-119 0 30 <br /> Anthracene 51 67 1-172 27 30 <br /> Fluoranthene 101 102 75-127 1 30 <br /> Pyrene 77 81 1-178 5 30 <br /> Benzo(a)anthracene 87 92 18-164 5 30 <br /> Chrysene 88 88 78-125 1 30 <br /> Benzo(b)fluoranthene 75 74 67-123 1 30 <br /> Benzo(k)fluoranthene 76 78 62-123 3 30 <br /> Benzo(a)pyrene 36 46 1-156 22 30 <br /> Indeno(1,2,3-cd)pyrene 68 71 41-131 4 30 <br /> Dibenz(a,h)anthracene 70 72 50-112 3 30 <br /> Benzo(g,h,i)perylene 56 59 8-144 6 30 <br /> Batch number: Z060802AA Sample number(s) : 4732498-4732500 UNSPK: 4732498 <br /> Benzene 107 105 83-128 2 30 <br /> Toluene 107 105 83-127 1 30 <br /> Ethylbenzene 107 106 82-129 2 30 <br /> Xylene (Total) 109 108 82-130 2 30 <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: TPH-DRO (C10-C25) Water <br /> Batch number: 060800000A <br /> Orthoterphenyl <br /> 4732498 82 <br /> 4732499 107 <br /> 4732500 101 <br /> Blank 87 <br /> LCS 107 <br /> MS 107 <br /> MSD 101 <br /> Limits: 59-131 <br /> Analysis Name: TPH-GRO - Waters <br /> Batch number: 0608OA16A <br /> Trifluorotoluene-F <br /> 4732498 94 <br /> 4732499 96 <br /> 4732500 95 <br /> Blank 93 <br /> LCS 89 <br /> *-Outside of specification <br /> (1) The result for one or both determinations was less than five times the LOQ. <br /> (2) The background result was more than four times the spike added. <br />