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• 1551 Industrial Road <br /> Segpola San Carlos,CA 94070-4111 _ <br /> l— - - (650)232-9600 <br /> qwr Analytical FAX(650) 232-9612 <br /> Gettler-Ryar/Geostrategies Project Tosco Sampled 4/10100 <br /> 6747 Sierra Court,Suite D Project Number Unocal SS#1205 Received 4/10/00 <br /> Dublin,CA 94568 Project Manager Deanna Harding - -R 4/24/00 <br /> EN <br /> - <br /> qno 'c <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Anal Analyzed Level Result Result Units Recov Lmuts % Limit % Notes* <br /> LCS fcontinuedl 00400 <br /> Ethylbenzene 4/18/00 100 825 ug/1 1700-130 825 <br /> Xylenes(total) TM 300 253 700-130 943 <br /> Surrogate a,a,a-Trrfluorotoluene " 100 10 9 700-130 109 <br /> .L.&A 0040087-BS2 <br /> Purgeable Hydrocarbons as Gasoline 4/18100 250 216 ug/1 700-130 864 _ <br /> Surrogate a,a,a-Tnfluorotoluene 100 990 _ " 700-130 __990 <br /> _ <br /> Matnx Spike 0040087 MSI L004101-02 <br /> Benzene 4/18/00 100 ND 937 119/1 600-140 93.7 <br /> Toluene 100 ND 882 600-140 88.2 <br /> Ethylberizene 100 ND 909 " 600-140 90.9 <br /> Xylenes(total) " 300 ND 272 600-140 90 7 <br /> Surrogate a,a,a-Difluorotoluene " 100 968 ff 700-130 968 <br /> Matrix Spike Du1 0040087-MSD1 L004101-02 <br /> Benzene 4/18/00 100 ND 943 ug/l 600-140 943 250 0.638 <br /> Toluene 100 ND 864 600-140 86A 250 206 <br /> Ethylbenzene 100 ND 873 600-140 87.3 250 404 <br /> Xylenes(total) 300 ND 266 " 60 0-140 88.7 250 223 <br /> Surrogate aa,a-Tnfluorotoluene " 100 911 700-130 911 <br /> Batch- 0040089 Date Prepared- 4118100 Extraction Metbod• EPA 5030B IPM <br /> Blank 0040089-BLKI <br /> Purgeable Hydrocarbons as Gasoline 4/18/00 ND u9/1 50.0 <br /> Benzene " ND 0.500 <br /> Toluene TM ND 0.300 <br /> Ethylbenzene " ND - 0.500 <br /> Xylenes(total) ND 0.500 <br /> Methyl tort-butyl ether ND 500 <br /> Surrogate a,aa-Tnfluorotoluene 100 941 700-130 941 <br /> LCS 00400MBS1 <br /> Benzene 4/18100 100 936 119/1 700-130 93 6 <br /> Toluene 100 888 " 700-130 888 <br /> Ethylbeaume 100 836 700-130 83 6 <br /> Xylenes(total) " 300 264 700-130 88 0 _ <br /> Surrogate aaa-Trifluorotoluene " T 100 102 700-130 102 - <br /> LCS 0040089-BS2 <br /> Purgeable Hydrocarbons as Gasoline 4/I8/00 250 260 ug/1 700-130 104 <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and definitions <br /> Page 8 of 11 <br />