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1 <br /> AllLancaster <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 1 of 2 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 1101231 <br /> Reported: 08/04/08 at 12:02 PM <br /> Matrix QC may not be reported if site-specific QC samples were not <br /> submitted. In these situations, to demonstrate precision and accuracy at <br /> a batch level, a LCS/LCSD was performed, unless otherwise specified in the <br /> method. <br /> Laboratory Compliance Quality Control <br /> Blank Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL** LOO Units %REC %REC Limits RPD RPD Max <br /> Batch number: 082010012A Sample number(s) : 5418147-5418151 <br /> TPH-DRO (C10-C25) Water N.D. 50. 100. ug/l 88 57-118 <br /> Batch number: 082130000A Sample number(s) : 5418148 <br /> TPH-DRO(C10-C25)Water w/ SiGel N.D. 29. 100. ug/1 70 45-114 <br /> ISample Matrix QualityControl <br /> Unspiked (UNSPK) = the sample used in conjunction with the matrix spik <br /> Background (BKG) = the sample used in conjunction with the duplicate <br /> Ms MSD MS/MSD RPD BKG DUP DUP Dup RPD <br /> Analysis Name %REC %REC Limits RPD MAX Conc Conc RPD Max <br /> Batch number: 082010012A Sample number(s) : 5418147-5418151 UNSPK: 5418149 <br /> TPH-DRO (C10-C25) Water 48* 62 59-128 27* 20 <br /> 1 Surrogate Quality Control <br /> Surrogate recoveries which are outside of the QC window are confirmed <br /> unless attributed to dilution or otherwise noted on the Analysis Report. <br /> Analysis Name: TPH-DRO (C10-C25) Water <br /> Batch number: 082010012A <br /> Orthoterphenyl <br /> 5418147 106 <br /> 5418148 110 <br /> 5418149 111 <br /> 5418150 98 <br /> 5418151 98 <br /> Blank 94 <br /> LCS 118* <br /> MS 98 <br /> MSD 98 <br /> Limits: 45-114 <br /> Analysis Name: TPH-DRO(C10-C25)Water w/ SiGel <br /> I Batch number: 082130000A <br /> Orthoterphenyl <br /> 5418148 84 <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 />