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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 /> REVISED <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 1105765 <br /> Reported: 09/12/08 at 12:39 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 95 92 70-130 3 30 <br /> Acenaphthene 102 96 70-130 6 30 <br /> Fluorene 96 90 70-130 6 30 <br /> Phenanthrene 101 97 70-130 4 30 <br /> Anthracene 26* 35* 70-130 30 30 <br /> Fluoranthene 91 94 70-130 3 30 <br /> Pyrene 93 105 70-130 12 30 <br /> Benzo(a)anthracene 73 80 70-130 9 30 <br /> Chrysene 95 95 70-130 0 30 <br /> Benzo(b)fluoranthene 73 71 70-130 3 30 <br /> Benzo(k)fluoranthene 69* 69* 70-130 0 30 <br /> Benzo(a)pyrene 46* 44* 70-130 4 30 <br /> Indeno(1,2,3-cd)pyrene 46* 46* 70-130 0 30 <br /> Dibenz(a,h)anthracene 49* 47* 70-130 4 30 <br /> Benzo(g,h,i)perylene 42* 40* 70-130 5 30 <br /> Batch number: 082490003A Sample number(s) : 5443253-5443257 UNSPK: 5443253 <br /> TPH-DRO(C10-C25)Water w/ SiGel 76 49* 59-128 44* 20 <br /> Batch number: L082341AA Sample number(s) : 5443251-5443258 UNSPK: 5443253 <br /> Benzene 108 108 85-126 0 30 <br /> Toluene 109 111 87-128 2 30 <br /> Ethylbenzene 109 110 89-129 0 30 <br /> Xylene (Total) 108 108 84-131 0 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: 082310016A <br /> Orthoterphenyl <br /> 5443251 72 <br /> 5443253 83 <br /> 5443254 99 <br /> 5443255 86 <br /> 5443256 87 <br /> 5443257 2712* <br /> 5443258 79 <br /> Blank 83 <br /> LCS 94 <br /> MS 99 <br /> MSD 86 <br /> Limits: 45-114 <br /> Analysis Name: PAHs in Water by LVI GC/MS <br /> Batch number: 08232WACO26 <br /> *-Outside of specification <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 />