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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 3 of 3 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 1083265 <br /> Reported: 04/10/08 at 06:55 PM <br /> Surrogate Quality Control <br /> Batch number: 08093SLCO26 <br /> Nitrobenzene-d5 2-Fluorobiphenyl Terphenyl-d14 <br /> 5313623 113 99 108 <br /> 5313624 186* 104 106 <br /> 5313625 110 98 109 <br /> 5313626 105 89 113 <br /> 5313627 107 90 107 <br /> 5313628 112 96 107 <br /> 5313629 112 94 110 <br /> 5313630 1262* 145* 80 <br /> 5313631 101 87 103 <br /> 5313632 107 90 101 <br /> Blank 109 98 108 <br /> LCS 104 95 105 <br /> MS 108 94 101 <br /> MSD 112 97 108 <br /> Limits: 53-152 63-129 66-142 <br /> Analysis Name: BTEX+MTBE by 8260B <br /> Batch number: B080911AB <br /> Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-d8 4-Bromofluorobenzene <br /> 5313623 102 88 105 88 <br /> 5313625 103 89 103 89 <br /> 5313626 104 93 104 87 <br /> 5313627 104 93 102 89 <br /> 5313628 108 99 101 89 <br /> 5313629 107 94 104 92 <br /> 5313631 112 101 100 93 <br /> 5313632 109 95 104 96 <br /> Blank 106 98 99 92 <br /> LCS 104 95 103 98 <br /> LCSD 106 94 102 95 <br /> MS 105 90 105 100 <br /> Limits: 71-114 70-109 70-123 70-111 <br /> Analysis Name: BTEX+MTBE by 8260B <br /> Batch number: R080871AB <br /> Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-d8 4-Bromofluorobenzene <br /> 5313624 81 82 83 92 <br /> 5313630 82 83 81 83 <br /> Blank 89 94 90 87 <br /> LCS 91 93 88 89 <br /> LCSD 95 98 91 91 <br /> Limits: 71-114 70-109 70-123 70-111 <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 />