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Sequoia 404 N Wiget Lane <br /> Walnut Creek,CA 94598 <br /> 00 <br /> Analytical (925)98-96 <br /> FAX(925)9888-967733 <br /> • <br /> Gettler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite 7 T _Project Number Unocal#2859 - — - _- Reported_ <br /> Dublin CA,94568 Project Manager Deanna L Harding 09-Dec-9915 07 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT- Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte - Result Linut= Units Level Result %REC Lmuts RPD Lunit Notes <br /> Batch 9L02001. Prepared 01-Dee-99 Using EPA 5030B [PIT] <br /> Blank(9L02001-BLK1) <br /> Purgeable Hydrocarbons ND 50 ug/1 <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 25 " <br /> Surrogate a a a-Tnflrtorotoluene 114 300 105 70-130 <br /> LCS(9L02001-BSI) <br /> Benzene 190 050 ug/I 20 0 950 70-130 <br /> Toluene 195 050 200 975 70-130 • <br /> Ethylbenzene 184 050 200 92 0 70-130 <br /> Xylents(tGW) 625 0 50 60 0 104 70-130 <br /> Surrogate aaa-Tri luororoluene 301 300 101 70430 <br /> Matrix Spike(9L02001-MSI) - Source W911614-07 <br /> Benzene 188 0 50 ug/l 200 ND 940 70-130 <br /> Toluene 190 0 50 200 ND 950 70-130 <br /> Ethylbenzene 195 0 50 20 0 ND 975 70-130 <br /> Xylenes(total) 598 050 60 0 ND 997 70-130 <br /> Surrogate a aa-Trifluorotoluene 293 300 977 70.130 <br /> Matrix Spike Dup(9LO2001-MSD1) Source W911614-07 <br /> Benzene 198 050 ug/I 200 ND 990 70-130 5 l8 20 <br /> Toluene 200 030 20 0 ND 100 70-130 513 20 <br /> Ethylbenzene 202 050 200 ND 101 70-130 3 53 20 <br /> Xylenes(total) 622 050 600 ND 104 70-130 393 20 <br /> Surrogate a aa-Tnfluorotoluene 298 300 993 70.130 <br /> Sequoia Analytical-Walnut Creek The results in rias report apply to the samples arraly ed to accord mce with the churn of <br /> custody document This analyncal report must be reproducedin its emrery <br /> ;ancmgp, a tory rector Page 13 of 17 <br />