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tiff e u rof i n s <br /> 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.lancasteriabs.com <br /> Page 3 of 3 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgmt Co Group Number: 1355270 <br /> Reported: 12/21/12 at 01:34 PM <br /> Surrogate Quality Control <br /> 6889758 79 90 96 <br /> 6889759 77 87 97 <br /> 6889760 75 89 97 <br /> Blank 84 97 101 <br /> LCS 85 99 107 <br /> MS 82 97 105 <br /> MSD 92 105 111 <br /> Limits: 63-123 69-120 68-120 <br /> Analysis Name: Custom TPH with Ranges (soil) <br /> Batch number: 123490010A <br /> Chlorobenzene Orthoterphenyl <br /> 6889758 75 79 <br /> 6889759 79 81 <br /> 6889760 81 84 <br /> Blank 97 95 <br /> LCS 91 96 <br /> MS 0* 2061* <br /> MSD 0* 2030* <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 /> Page 11 of 13 <br />