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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.lancasterlabs.com <br /> Page 3 of 5 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 935922 <br /> Reported: 04/08/05 at 01:00 PM <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BKG DUP DUP Dup RPD <br /> Analysis Name %REC %REC Limits RPD MAX Conc Conc RPD Max_ <br /> Anthracene 61 69 43-139 12 30 <br /> F1uoranthene 57 67 28-151 16 30 <br /> Pyrene 74 80 47-139 7 30 <br /> Benzo(a)anthracene 62 67 42-146 8 30 <br /> Chrysene 64 70 47-147 9 30 <br /> Benzo(b)fluoranthene 59 73 50-134 21 30 <br /> Benzo(k)fluoranthene 58 70 53-130 18 30 <br /> Benzo(a)pyrene 59 65 50-137 10 30 <br /> Indeno(1,2,3-cd)pyrene 61 66 53-144 8 30 <br /> Dibenz(a,h)anthracene 50* 56 55-137 11 30 <br /> Benzo(g,h,i)perylene 59 69 41-143 13 30 <br /> Batch number: 05082A33A Sample number(s) : 4485212 <br /> TPH-GRO - Soils 76 79 39-118 4 30 <br /> Benzene 89 101 52-135 12 30 <br /> Toluene 90 101 59-129 12 30 <br /> Ethylbenzene 88 100 56-132 12 30 <br /> Total Xylenes 91 101 54-134 11 30 <br /> MTBE 94 103 45-141 9 30 <br /> Surrogate Quality Control <br /> Analysis Name: TPH-GRO - Waters <br /> Batch number: 05077A53B <br /> Trifluorotoluene-F Trifluorotoluene-P <br /> 4485213 86 97 <br /> 4485216 85 99 <br /> 4485217 88 98 <br /> 4485218 88 99 <br /> 4485220 89 97 <br /> Blank 88 98 <br /> LCS 88 98 <br /> LCSD 90 98 <br /> MS 86 98 <br /> MSD 89 98 <br /> Limits: 70-142 69-137 <br /> Analysis Name: Custom TPH with Ranges (soil) <br /> Batch number: 050780013A <br /> Chlorobenzene Orthoterphenyl <br /> 4485204 27 61 <br /> 4485205 40 79 <br /> 4485206 20* 72 <br /> 4485207 29 79 <br /> 4485208 47 105 <br /> 4485209 34 79 <br /> 4485210 30 72 <br /> 4485211 22 74 <br /> 4485212 623* 1090* <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 />