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1551 CA <br /> Road <br /> Sequoia <br /> San Carlos CA 94074-41 1 1 <br /> 6 (650) 232-9600 <br /> Analytical FAX(650) 232-9612 <br /> Gettler-Ryan/Geostrategies(1) Project Tosco(5) Sampled 3114/00 <br /> 6747 Sierra Court,Suite D Project Number 6981 Pacific Ave Received 3/15/00 <br /> Dublin,CA 94568 Project Manager Steve Carter Reported 3/20/00 <br /> Total Purgeable Hydrocarbons(C6-C12),BTEX and MTBE by DHS LiTT/Quality Control '-- - <br /> Sequoia Analytical-Sart Carlos _ <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Nates* <br /> Batch 0030065 Date Prepared 3115100 Extraction Method EPA 5030B [P/Tl <br /> Blank 0030065-BLKI <br /> Purgeable Hydrocarbons as Gasoline 3/15/00 ND ug/l 500 <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Methyl tert-butyl ether ND 5 00 <br /> Surrogate a,a,a-Trifluorotoluene 100 104 700-130 104 <br /> LCS 0030065-BS1 <br /> Benzene 3/15/00 100 873 ug/l 700-130 873 <br /> Toluene 100 809 700-130 80 9 <br /> Ethylbenzene 100 804 700-130 804 <br /> lenes(total) 300 24 7 700-130 82 3 <br /> rrogate a,a,a-Trifluorotoluene 100 10 2 700-130 102 <br /> LCS 0030065-BS2 <br /> Purgeable Hydrocarbons as Gasoline 3115/00 250 215 ug/1 700-130 86 0 <br /> Surrogate a a a-Trtfluorotoluene 10 0 904 700-130 904 <br /> Matrix Spike 0030065-MS1 L003036-10 <br /> Benzene 3/15/00 100 ND 953 ug/1 600-140 95 3 <br /> Toluene 100 ND 902 600-140 902 <br /> Ethylbenzene 100 ND 919 600-140 919 <br /> Xylenes(total) 300 ND 27 7 600-140 923 <br /> Surrogate a a a-Trifluorotoluene 10 0 103 700-130 103 <br /> Matrix Spike Dup 0030065-MSDI L003036-10 <br /> Benzene 3/15/00 100 ND 944 ug/l 600-140 944 250 0 949 <br /> Toluene 100 ND 8 63 600-140 863 250 442 <br /> Ethylbenzene 100 ND 883 600-140 88.3 250 400 <br /> Xylenes(total) 300 ND 268 600-140 89.3 250 330 <br /> Surrogate a a a-Trtfluorotoluene 100 940 700-130 940 <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and definitions <br /> Page 5 of 6 <br /> I <br />