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i <br /> LancasterAnalysis Report <br /> . Laboratories <br /> 2425 New Holland Pike PO Box 12425 Lencasler FA 17605-2425•717-656-2300 Fax 717 656-2661•www lancasteriabs com <br /> Page 2 of 4 ' <br /> Quality Control su=uary <br /> Client Name ChevronTexaco c/o SECOR <br /> Group Number 965274 <br /> Reported--If-/-f-1/05—at-03-38 -PM--- <br /> _11/11/05 at 03 38 PM-- --- - <br /> Sample Matrix Quality Control <br /> =MS - MSD- MS/MSD - _ RPD BKG_ DUP DUP - Dup RPD <br /> Analysis Name %REC %REC Limits RPD MAX ConcD <br /> `1:0—-- -----RP - Max <br /> TPH-GRO - Waters 114 63-154 <br /> Hatch number G53OBA07A Sample number(s) 463S980 <br /> TPH-GRO - Waters 109 <br /> Batch number 053140023A Sample number(s) 4635979-4635985 <br /> Methanol (by Direct ln3ection) 92 96 66-133 4 20 <br /> Batch number Z053052AA Sample number(s) 4635978 <br /> Methyl Tertiary Butyl Ether 110 110 69-134 1 30 <br /> Benzene 92 94 83-128 2 30 <br /> Toluene 97 98 83-127 2 30 <br /> Ethylbenzene 99 100 82-129 2 30 <br /> Xylene (Total) 97 101 82-130 3 30 <br /> Batch number Z053083AA Sample number(s) 4635979-4635985 <br /> Ethanol 94 108 26-162 14 30 <br /> Methyl Tertiary Butyl Ether 110 109 69-134 1 30 <br /> di-Isopropyl ether 93 93 - 75-130 0 30 <br /> Ethyl t-butyl ether 95 .96 78-119 1 30 <br /> t-Amyl methyl ether 99 97 72-125 3 30 — <br /> t-Butyl alcohol 98 93 56-134 5 30 <br />- -Benzene - - _ _ _ _ 98 k00 83-128 2 30 <br /> 1,2-Dichloroethane 96 96 70-143--�0-�30 - <br /> Toluene 99 99 83-127 0 30 <br /> 1,2-Dibromoethane 92 91 76-120 1 30 <br /> Ethylbenzene 100 100 82-129 0 30 <br /> Xylene (Total) 103 103 82-130 0 30 <br /> - ---- T -- _--- -- -Surrogate Quality-Control------ ---- - - --- <br /> Analysis Name TPH-GRO---Waters <br /> _- <br /> Batch number 05305AO7A <br /> Trifluorotoluene-F <br /> 4635976 90 <br /> 4635979 89 <br /> 4635981 87 <br /> 4635982 90 <br /> Blank 87 <br /> LCS 110 <br /> LCSD 109- <br /> MS 114 <br /> Limits 63-135' <br /> Analysis Name TPH-GRO - Waters <br /> Batch number 05305AOBA <br /> Trifluorotoluene-F <br /> 4635983 101 <br /> 4635984 101 <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 />