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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 2 of 4 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 945012 <br /> Reported: 06/10/05 at 03:08 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Units %REC %REC Limits RPD RPD Max <br /> Benzene N.D. 0.005 mg/kg 102 85-115 <br /> Toluene N.D. 0.005 mg/kg 100 81-119 <br /> Ethylbenzene N.D. 0.005 mg/kg 99 85-115 <br /> Total Xylenes N.D. 0.02 mg/kg 101 85-115 <br /> Batch number: 05152A51A Sample number(s) : 4532200 <br /> TPH-GRO - Waters N.D. 50. ug/l 105 110 70-130 5 30 <br /> Benzene N.D. 0.5 ug/l 96 87 86-119 11 30 <br /> Toluene N.D. 0.5 ug/l 97 87 82-119 12 30 <br /> Ethylbenzene N.D. 0.5 ug/l 94 85 81-119 10 30 <br /> Total Xylenes N.D. 1.5 ug/l 97 87 82-120 10 30 <br /> Batch number: 05153A15B Sample number(s) : 4532202 <br /> Benzene N.D. 0.5 ug/l 93 111 86-119 18 30 <br /> Toluene N.D. 0.5 ug/l 91 109 82-119 18 30 <br /> Ethylbenzene N.D. 0.5 ug/l 87 104 81-119 18 30 <br /> Total Xylenes N.D. 1.5 ug/l 87 103 82-120 17 30 <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 /> Batch number: 05151SLD026 Sample number(s) : 4532201 <br /> Naphthalene 97 94 49-118 3 30 <br /> Acenaphthylene 95 92 27-155 3 30 <br /> Acenaphthene 99 99 46-129 0 30 <br /> Fluorene 99 99 47-136 0 30 <br /> Phenanthrene 100 100 46-140 0 30 <br /> Anthracene 99 97 43-139 2 30 <br /> Fluoranthene 98 97 28-151 2 30 <br /> Pyrene 104 102 47-139 2 30 <br /> Benzo(a)anthracene 101 97 42-146 3 30 <br /> Chrysene 104 101 47-147 3 30 <br /> Benzo(b)fluoranthene 114 231* 50-134 68* 30 <br /> Benzo(k)fluoranthene 119 229* 53-130 63* 30 <br /> Benzo(a)pyrene 113 175* 50-137 43* 30 <br /> Indeno(1,2,3-cd)pyrene 109 173* 53-144 46* 30 <br /> Dibenz(a,h)anthracene 89 136 55-137 42* 30 <br /> Benzo(g,h,i)perylene 110 181* 41-143 49* 30 <br /> Batch number: 05152A34A Sample number(s) : 4532201 <br /> Benzene 94 94 52-135 0 30 <br /> Toluene 95 95 59-129 1 30 <br /> Ethylbenzene 95 95 56-132 0 30 <br /> Total Xylenes 97 97 54-134 0 30 <br /> Batch number: 05152A51A Sample number(s) : 4532200 <br /> Benzene 100 78-131 <br /> Toluene 102 78-129 <br /> Ethylbenzene 100 75-133 <br /> Total Xylenes 102 86-132 <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 />