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,T—N <br /> 1551 Industrial Road <br /> 4 •equola San Carlos, I 94070-4i11 <br /> A (650) 2,32-9600 <br /> Analytical <br /> FAX(650) 232.-9612 <br /> Gettler-Ryan/Geostrategles(1) Project Unocal(]) Sampled 12/13/99 <br /> 6747 Sierra Court,Suite D Protect Number Unocal SS#5098 Received 12/14/99 <br /> Dublin,CA 94568 Project Manager Scott Polston Reported 12/29/99 <br /> Total Purgeable Hydrocairbons(C6-C12)andBTEX by DHS Li>FT/QualitiControl 2 <br /> Sequoia Analytical-San CaarIos <br /> Date Spdce Sample QC Reporting Lima Recov RPD RPD <br /> Anal Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> LCS(continued) 9120123-BSI <br /> Toluene 12/24/99 100 867 ug/l 700-130 867 <br /> Ethylbenzene of 100 881 11700-130 88 1 <br /> Xylenes(total) " 300 266 " 700-130 887 <br /> Surrogate a,a,a-Tnfluorotoluene " 100 992 600-140 992 <br /> LCS 9120123-13S2 <br /> Purgeable Hydrocarbons as Gasoline 12/24/99 250 258 u9/1 700-130 103 <br /> Surrogate a,a,a-Tnfluorotoluene N100 891 600-140 891 <br /> LCS 9120123-BS3 <br /> Benzene 12/25/99 100 836 ug/I 700-130 83 6 <br /> Toluene 100 838 700-130 838 <br /> Ethylbenzene 100 849 700-130 84 9 <br /> X (total) 300 25 7 700-130 85 7 <br /> SJWte a,a a-Tnfluorotoluene 10 0 926 600-140 92 6 <br /> LCS 9120123-BS4 <br /> Purgeable Hydrocarbons as Gasoline 12/25/99 250 268 ug/l 700-130 107 <br /> Surrogate a a a-Tnfluorotoluene " 100 9 72 " 600-140 972 <br /> Matrix Spike 9120123-MSI L912134-02 <br /> Purgeable Hydrocarbons as Gasoline 12/24/99 250 ND 277 ug/l 600-140 I.I.J. <br /> Surrogate a,a,a-Tnfluorotoluene " 10 0 108 to600-140 108 <br /> Matrix Spike Dun 9120123-MSDI L912134-02 <br /> Purgeable Hydrocarbons as Gasoline 12/24/99 250 ND 268 ug/l 600-140 107 25 0 3 67 <br /> Surrogate a a a-Triuorotoluene " 100 101 600-140 101 <br /> Batch 9120124 Date Prepared 12/24/99 Extraction Method EPA 5030E [P/T1 <br /> Blank 9120124-BLK1 <br /> Purgeable Hydrocarbons as Gasoline 12/24/99 ND ug/1 500 <br /> Benzene ND to0 500 <br /> Tohienr " Nn to n 5nn <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND to0 500 <br /> Surrogate a a,a-Tri luorotoluene " 100 113 600-140 113 <br /> Blank 9120124-BLK2 <br /> Purgeable Hydrocarbons as Gasoline 12/25/99 ND ug/1 5o 0 <br /> Benzene " ND If <br /> 0.500 <br /> T e11ND to0 500 <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and definitions <br /> ,p� Page 24 of 31 <br />