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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: 1105764 <br /> Reported: 08/28/08 at 09:22 AM <br /> Surrogate Quality Control <br /> Chlorobenzene Orthoterphenyl <br /> 5443248 206* 0* <br /> 5443249 123 76 <br /> 5443250 109 99 <br /> Blank 116 92 <br /> LCS 154* 97 <br /> MS 159* 97 <br /> MSD 147* 93 <br /> Limits: 37-125 59-129 <br /> Analysis Name: BTEX+MTBE by 8260B <br /> Batch number: B082311AA <br /> Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-d8 4-Bromofluorobenzene <br /> 5443250 96 97 97 101 <br /> Blank 95 96 95 94 <br /> LCS 97 97 97 95 <br /> LCSD 96 96 98 95 <br /> MS 97 95 98 95 <br /> Limits: 71-114 70-109 70-123 70-111 <br /> Analysis Name: BTEX+MTBE by 8260B <br /> Batch number: Q082331AA <br /> Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-d8 4-Bromofluorobenzene <br /> 5443248 75 77 72 74 <br /> 5443249 83 87 80 98 <br /> Blank 98 98 91 93 <br /> LCS 99 97 93 93 <br /> LCSD 99 100 91 94 <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 />