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Road <br /> Sequoia an Carlos CA <br /> 4070 <br /> San Carlos CA 94070 <br /> (650)232-96W <br /> mw AnalyticalID FAJseq(650)232-9612bin <br /> www se4uotalabs com <br /> Gettler-Ryait/Geostrategies(1) Project Tosco(1) <br /> 6747 Sieixa Court,Suite J Project Number Unocal SS 408671,Stockton,CA Repo:rfed <br /> Dublin CA,94568 Project Manager Deanna Harding 12/06/009 <br /> Total Purgeable Hydrocarbon (C6-C12) by EPA 8015M and BTEX/MTBE by EPA 8021B - Quality Control <br /> Sequoia Analytical - San Carlos <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Lupus RPD Luna Notes <br /> Batch 1120002 -EPA 5030B(P/T) <br /> Blank(1120002-BLKI) Prepared&Analyzed 12/03/01 <br /> Purgeable Hydrocarbons as Gasoline ND 50 ug/I <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 0 50 " <br /> Methyl tert-butyl ether ND 50 " <br /> Surrogate a a a-Triuorotoluene 769 100 76 9 70-130 <br /> LCS(7120002-BSI) Prepared&Analyzed 12/03/01 <br /> Benzene 106 050 ugll 100 106 70-130 <br /> Toluene 109 050 " 100 109 70-130 <br /> Ethylbenzene 112 050 " 10 0 112 70-130 <br /> Xylenes(total) 33 1 050 300 110 70-130 ' <br /> Surrogate a a a-Trtfluorotoluene 944 100 944 70-130 <br /> LCS(I 120002-BS2) Prepared&Analyzed 12/03/01 <br /> Purgeable Hydrocarbons as Gasoline 221 50 ug/1 250 884 70-130 <br /> Surrogate a,a,a-Triuorotoluene 9 63 100 96 3 _ 70=130 <br /> _Matrix Spike(1120002-MSI) Source L111140-11 Prepared 12/03/01 Analyzed 12104/01 <br /> —10 4- ----0 50- ug/1 10 0--- -ND --104-60-140 <br /> Toluene 9 48---- __ 0 50 10 0 _ND_ 94 8_ _ 60-14_0 <br /> Ethylbenzene - T-- `-�{ - -` -= 910 050 100- - ND --- 91 0 60-140 - - - - <br /> Xylenes(total) 270 050 300 ND 900 60-140 <br /> Surrogate a a a-Triuorotoluene 935 100 935 70-130 <br /> Matrix Spike Dup(1120002-MSD7) Source L111140-]l Prepared 12/03/01 Analyzed 12/04/01 <br /> Benzene 995 050 ug/l 100 ND 995 60-140 442 25 <br /> Toluene 9 08 050 100 ND 908 60-140 431 25 <br /> Ethylbenzene 876 050 100 ND 876 60-140 3 81 25 <br /> Xylenes(total) 259 050 300 ND 863 60-140 4 16 25 <br /> Surrogate a,a,a-Triuorotoluene 9.34 100 934 70-130 <br /> Sequoia Analytical - San Carlos The results in this report apply to the samples analyzed in accordance with the chain <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 6 of 10 <br />