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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: 1082757 <br /> Reported: 04/04/08 at 03:16 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 /> Batch number: 080870029A Sample number(s) 5310290-5310297 UNSPK: 5310290 BKG: 5310290 <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: 08087SLA026 Sample number(s) : 5310290-5310297 UNSPK: P310146 <br /> Naphthalene 76 78 27-145 2 30 <br /> Acenaphthylene 82 85 42-141 4 30 <br /> Acenaphthene 83 85 37-145 3 30 <br /> Fluorene 89 91 51-142 3 30 <br /> Phenanthrene 87 88 18-169 1 30 <br /> Anthracene 88 91 34-161 3 30 <br /> Fluoranthene 102 104 36-165 2 30 <br /> Pyrene 79 79 37-154 1 30 <br /> Benzo(a)anthracene 84 86 48-148 2 30 <br /> Chrysene 89 90 53-138 2 30 <br /> Benzo(b)fluoranthene 91 93 42-145 2 30 <br /> Benzo(k)fluoranthene 84 86 40-156 2 30 <br /> Benzo(a)pyrene 82 83 52-131 1 30 <br /> Indeno(1,2,3-cd)pyrene 89 90 43-135 1 30 <br /> Dibenz(a,h)anthracene 91 92 31-135 1 30 <br /> Benzo(g,h,i)perylene 86 87 33-141 1 30 <br /> Batch number: A080851AA Sample number(s) : 5310290 UNSPK: P307582 <br /> Benzene 93 66-112 <br /> Toluene 90 58-116 <br /> Ethylbenzene 88 54-116 <br /> Xylene (Total) 88 52-117 <br /> Batch number: A080852AA Sample number(s) : 5310292-5310295 UNSPK: 5310292 <br /> Benzene 111 66-112 <br /> Toluene 106 58-116 <br /> Ethylbenzene 107 54-116 <br /> Xylene (Total) 107 52-117 <br /> Batch number: A080861AA Sample number(s) 5310291,5310297 UNSPK: P311119 <br /> Benzene 107 66-112 <br /> Toluene 108 58-116 <br /> Ethylbenzene 107 54-116 <br /> Xylene (Total) 107 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: 080870029A <br /> Chlorobenzene orthoterphenyl <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 />