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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: 1121307 <br /> Reported: 12/09/08 at 03:18 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 -285 -129 42-141 14 30 <br /> (2) (2) <br /> Acenaphthene 31* 117 37-145 19 30 <br /> Fluorene -85 (2) 61 (2) 51-142 26 30 <br /> Phenanthrene -4864 -1329 42-144 49* 30 <br /> (2) (2) <br /> Anthracene -1679 -737 34-161 25 30 <br /> (2) (2) <br /> Fluoranthene -16988 -8530 26-166 32* 30 <br /> (2) (2) <br /> Pyrene -13943 -7672 37-154 28 30 <br /> (2) (2) <br /> Benzo(a)anthracene -4501 -3757 25-166 9 30 <br /> (2) (2) <br /> Chrysene -7155 -3872 14-174 17 30 <br /> (2) (2) <br /> Benzo(b)fluoranthene -2593 -1951 17-182 4 30 <br /> (2) (2) <br /> Benzo(k)fluoranthene -1286 -923 40-156 6 30 <br /> (2) (2) <br /> Benzo(a)pyrene -1774 -1188 34-156 13 30 <br /> (2) (2) <br /> Indeno(1,2,3-cd)pyrene -711 -612 8-164 4 30 <br /> (2) (2) <br /> Dibenz(a,h)anthracene -181 -101 16-159 8 30 <br /> (2) (2) <br /> Benzo(g,h,i)perylene -915 -888 33-141 1 30 <br /> (2) (2) <br /> Batch number: Q083381AA Sample number(s) : 5536924 UNSPK: P540992 <br /> Benzene 89 93 66-112 16 30 <br /> Toluene 96 100 58-116 16 30 <br /> Ethylbenzene 96 100 54-116 15 30 <br /> Xylene (Total) 97 101 52-117 15 30 <br /> Batch number: X083382AA Sample number(s) : 5536923 UNSPK: P541741 <br /> Benzene 116* 66-112 <br /> Toluene 117* 58-116 <br /> Ethylbenzene 113 54-116 <br /> Xylene (Total) 109 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: 083310027A <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 />