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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 2 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 1036495 <br /> Reported: 05/11/07 at 11:27 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 <br /> RPD <br /> Analysis Name %,REC %REC Limits RPD MAX Conc Conc RPD Max_ <br /> Benzo(a)pyrene 97 93 1-155 4 30 <br /> Indeno(1,2,3-cd)pyrene 98 96 12-157 3 30 <br /> Dibenz(a,h)anthracene 82 78 17-153 5 30 <br /> Benzo(g,h,i)perylene 98 94 1-168 5 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: 071240009A <br /> Orthoterphenyl <br /> 5044565 88 <br /> 5044566 82 <br /> 5044567 107 <br /> 5044568 108 <br /> 5044569 89 <br /> 5044570 90 <br /> Blank 94 <br /> LCS 113 <br /> MS 107 <br /> MSD 108 <br /> Limits: 59-131 <br /> Analysis Name: Selected SVOAs by 8270 SIM <br /> Batch number: 07127WAA026 <br /> Nitrobenzene-d5 2-Fluorobiphenyl Terphenyl-d14 <br /> 5044565 106 102 111 <br /> 5044566 108 104 108 <br /> 5044567 111 104 108 <br /> 5044568 105 99 106 <br /> 5044569 107 101 111 <br /> 5044570 111 106 115 <br /> Blank 110 104 111 <br /> LCS 107 103 104 <br /> MS 111 104 108 <br /> MSD 105 99 106 <br /> Limits: 50-153 52-132 58-141 <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 background result was more than four times the spike added. <br />