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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: 1105968 <br /> Reported: 08/28/08 at 11:06 AM <br /> Surrogate Quality Control <br /> Blank 92 101 108 <br /> LCS 91 96 108 <br /> MS 88 94 100 <br /> MSD 84 90 99 <br /> Limits: 53-152 63-129 66-142 <br /> Analysis Name: BTEX+MTBE by 8260B <br /> Batch number: A082341AB <br /> Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-d8 4-Bromofluorobenzene <br /> 5444433 82 76 83 77 <br /> 5444434 82 77 83 76 <br /> 5444435 82 76 84 76 <br /> Blank 85 78 83 77 <br /> LCS 84 78 85 82 <br /> LCSD 84 77 84 81 <br /> MS 84 77 86 80 <br /> Limits: 71-114 70-109 70-123 70-111 <br /> Analysis Name: BTEX+MTBE by 8260B <br /> Batch number: R082341AA <br /> Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-d8 4-Bromofluorobenzene <br /> 5444436 91 95 93 100 <br /> Blank 102 105 102 98 <br /> LCS 106 108 107 105 <br /> LCSD 103 106 103 102 <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 />