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7• 1551 industrial Road <br /> Sequoia San Carlos CA 94070-4111 <br /> 4 (650)232-9600 <br /> Analytical FAX(650) 232-9612 <br /> Gettler-RyanlGeostrategies(1) Protect Tosco(5) Sampled 3114/00 <br /> 6747 Sierra Court,Suite D Protect 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)and RTEX by DHS LUFT/Quality Control <br /> Sequoia Analytical-San Carlos _ a _ _ <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes"` <br /> Batch 0030065 Date Prepared 3115100 Extraction Method EPA 5030B IP/Tl <br /> Blank 0030065-BLKI <br /> Purgeable Hydrocarbons as Gasoline 3/15100 ND ug/1 500 <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Surrogate a a,a-Trifluorotoluene 100 104 600-140 104 <br /> LCS 0030065-BSI <br /> Benzene 3115/00 100 8 73 ug/l 700-130 873 <br /> Toluene 1110 0 809 " 700-130 80 9 <br /> Ethylbenzene 100 804 700-130 804 <br /> Xylenes(total) 300 24 7 700-130 82 3 <br /> wgate a a a-Trifluorotoluene 100 10 2 600-140 102 <br /> LCS 0030065-BS2 <br /> Purgeable Hydrocarbons as Gasoline 3/15/00 250 215 ug/1 700-130 86 0 <br /> Surrogate a,a a-Trifluoro toluene 1110 0 904 IF 600-140 904 <br /> Matrix Spike 0030065-MSI L003036-10 <br /> Benzene 3115100 10 0 ND 9 53 ug/1 600-140 95 3 <br /> Toluene 10 0 ND 9 02 1, 600-140 902 <br /> Ethylbenzene 10 0 ND 9 19 600-140 919 <br /> Xylenes(total) 300 ND 277 600-140 923 <br /> Surrogate a,a,a-Trafluorotoluene 100 103 600-140 103 <br /> Matrix Spike Dup 0030065-MSDI L003036-10 <br /> Benzene 3115100 too ND 944 ug/l 600-140 944 250 0 949 <br /> Toluene too ND 863 600-140 863 250 442 <br /> Ethylbenzene 100 ND 8 83 600-140 883 250 400 <br /> Xylenes(total) 300 ND 268 600-140 893 250 330 <br /> Surrogate a,a,a-Trifluorotoluene 100 940 600-140 94 0 <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and definitions <br /> Page 4 of 6 <br />