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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.lancasterIabs.com <br /> Page 3 of 4 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgmt Co Group Number: 1171046 <br /> Reported: 11/24/09 at 03:54 PM <br /> Surrogate Quality Control <br /> 5837115 98 95 83 86 <br /> 5837116 96 87 85 85 <br /> 5837117 97 91 85 86 <br /> 5837118 98 90 86 85 <br /> Blank 94 94 84 85 <br /> LCS 92 91 87 92 <br /> MS 94 98 86 91 <br /> MSD 90 89 88 88 <br /> Limits: 71-114 70-109 70-123 70-111 <br /> Analysis Name: BTEX+MTBE by 8260B <br /> Batch number: A093211AA <br /> Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-d8 4-Bromofluorobenzene <br /> 5837119 92 89 86 85 <br /> Blank 91 91 84 83 <br /> LCS 92 94 87 89 <br /> MS 93 94 90 88 <br /> MSD 92 91 91 85 <br /> Limits: 71-114 70-109 70-123 70-111 <br /> Analysis Name: BTEX+MTBE by 8260B <br /> Batch number: A093212AA <br /> Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-d8 4-Bromofluorobenzene <br /> 5837110 93 94 83 81 <br /> Blank 91 89 85 82 <br /> LCS 91 90 87 87 <br /> MS 92 95 87 88 <br /> MSD 92 92 88 86 <br /> Limits: 71-114 70-109 70-123 70-111 <br /> Analysis Name: PAHs in soils by SIM <br /> Batch number: 09321SLF026 <br /> Nitrobenzene-d5 2-Fluorobiphenyl Terphenyl-d14 <br /> 5837110 97 96 103 <br /> 5837111 97 96 105 <br /> 5837112 99 93 98 <br /> 5837113 94 84 91 <br /> 5837114 94 90 91 <br /> 5837115 101 95 89 <br /> 5837116 102 92 93 <br /> 5837117 98 78 93 <br /> 5837118 99 88 82 <br /> 5837119 505* 76 98 <br /> Blank 90 92 93 <br /> LCS 101 97 111 <br /> MS 98 87 84 <br /> MSD 83 94 91 <br /> Limits: 53-152 63-129 51-141 <br /> Analysis Name: Custom TPH with Ranges (soil) <br /> Batch number: 093210040A <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 />