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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 4 of 4 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 978150 <br /> Reported: 03/03/06 at 11:16 AM <br /> Surrogate Quality Control <br /> MS 100 91 <br /> MSD 95 90 <br /> Limits: 63-135 69-129 <br /> Analysis Name: TPH-GRO - Waters <br /> Batch number: 06052A54C <br /> Trifluorotoluene-F Trifluorotoluene-P <br /> 4710127 94 91 <br /> 4710128 101 92 <br /> Blank 88 89 <br /> LCS 95 90 <br /> LCSD 98 89 <br /> MS 100 91 <br /> MSD 95 90 <br /> Limits: 63-135 69-129 <br /> Analysis Name: TPH-DRO(C10-C25)Water w/ SiGel <br /> Batch number: 060530012A <br /> Orthoterphenyl <br /> 4710125 76 <br /> 4710130 40* <br /> Blank 76 <br /> LCS 97 <br /> MS 106 <br /> MSD 106 <br /> Limits: 59-131 <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 />