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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 Mgmt Co Group Number: 1203974 <br /> Reported: 08/13/10 at 02:10 PM <br /> Surrogate Quality Control <br /> Blank 99 87 93 <br /> LCS 96 87 86 <br /> LCSD 95 87 81 <br /> MS 96 80 55 <br /> MSD 98 85 61 <br /> Limits: 53-152 52-132 51-141 <br /> Analysis Name: Custom TPH with Ranges (soil) <br /> Batch number: 102020027A <br /> Chlorobenzene Orthoterphenyl <br /> 6037223 68 91 <br /> 6037224 70 92 <br /> 6037225 72 92 <br /> Blank 77 97 <br /> DUP 64 795* <br /> LCS 80 100 <br /> MS 66 0* <br /> Limits: 49-125 59-129 <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 />