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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.lancasterlabs.com <br /> Page 3 of 3 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 953056 <br /> Reported: 08/19/05 at 11:47 AM <br /> Surrogate Quality Control <br /> 4572088 78 78 90 <br /> Blank 75 72 90 <br /> LCS 81 76 95 <br /> MS 121 64 92 <br /> MSD 105 62 87 <br /> Limits: 52-148 48-131 49-140 <br /> Analysis Name: TPH-DRO(C10-C25)Water w/ SiGel <br /> Batch number: 052280018A <br /> Orthoterphenyl <br /> 4572088 98 <br /> Blank 99 <br /> LCS 127* <br /> LCSD 130* <br /> Limits: 64-125 <br /> Analysis Name: BTEX by 8260B <br /> Batch number: W052101AB <br /> Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-d8 4-Bromofluorobenzene <br /> 4572088 89 87 93 91 <br /> Blank 93 90 92 89 <br /> LCS 92 91 96 95 <br /> MS 92 89 96 96 <br /> MSD 92 87 95 95 <br /> Limits: 81-120 82-112 85-112 83-113 <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 />