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Lancaster Anal sis Report <br /> Laboratories Y !� <br /> 2425 New HcHand Prke PC Box 12425 Lancaster PA 17605 2425 717 656 2300 Fax 717 658-2681 WWW lanCasterlabs Corn <br /> Page i of 1 <br /> Quality Control Summary <br /> Client Name Chevron Group Number 990,790 <br /> Reported 05/26/06 at 11 21 AM <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 spec.fzeo in the <br /> method <br /> Laboratory Compliance Quality Control ' <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Rgsult M-LL Unita %REr, %RBC Limi_ta RPD RPD Max <br /> Batch number 061330004A Sample number(s) 4778752-4778754 ' <br /> Total TPH N B 40 ug/l 100 53-120 <br /> TPH Motor Oil C16-C36 N D 40 ug/1 <br /> Sample Matrix Quality Control <br /> Unspiked (UNSPK) = the sample used an conjunction with the matrix spike <br /> Background (EKG) R the sample used in conjunction with the duplicate <br /> r48 MSD HS/MSD RPD BKG DUV DUP Dup RPD <br /> Analvais Name %RIC %R>3Limxtp RPD MAX Cone coat RPD Max ' <br /> Batch number 061330004A Sample number(s) 4778752-4776754 UNSPK P769285 <br /> Total TPh 189• 164' 26-138 8 20 <br /> Surrogate Quality Control <br /> Surrogate recoveries which are outs�ae of the QC window are confirmed <br /> unless attr•1nuteo to ailution or otherwise notea on the Analysis Report <br /> Analysis Name TPh Fuels by GC (Waters) <br /> Batch namber 061330004A <br /> Chlorobenzene orthcterphenyl <br /> 4778752 93 96 <br /> 4'778753 108 91 <br /> 4779754 534' 9e <br /> Blank 98 92 <br /> LCS 126 105 <br /> MS 133 92 <br /> USD 22- 01 <br /> Limits 26-136 44-137 <br /> * Outside of speclfieallon <br /> (1) The result for one or bath determinations u as les-,than five Mmes the LOQ <br /> (2) The background result was more thdn four times the spike added <br /> 1 <br /> 1 <br />