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404 N Wiget Lane <br /> Sequoia Walnut Ore*CA 94598 <br /> ,1) Analytical (925)988- <br /> FAX(9]6)988-96%7373 <br /> v <br /> www se uoiaiabs can <br /> Gettler Ryan,Inc -Dublin Project Unocal - <br /> 6747 Sierra Court Suite J Project Number Unocal#2859 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 07-Dec-01 08 14 <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 Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1K27002 -EPA 5030B PIT <br /> Blank(1K27002-BLKI) Prepared&Analyzed 27-Nov-01 _ <br /> Purgeable Hydrocarbons(C6-C12) ND 50 ug/1 <br /> Benzene ND 0 50 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether(MTBE) ND 25 " <br /> Surrogate a,a,a-Triuorotoluene 289 " 300 96 70-130 <br /> Blank(IK27002-BLK3) _ - Prepared&Analyzed 30-Nov-01 <br /> Purgeable Hydrocarbons(C6-C 12) ND 50 ugA <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene - - ND 050 = _ - <br /> Xylenes(total) ND 05040 <br /> Methyl tert-butyl ether(MTBE) ND 25 " <br /> Surrogate a,a a-Triuorotoluene 28.5 300 95 70-130 <br /> LCS(I K27002-BSI) Prepared&Analyzed 27-Nov-01 <br /> Benzene 16 6 0 50�ug/1--20 0 - 83 70-130 - -_-- <br /> Toluene 181 050 200 90 70-130 <br /> Ethylbenzene----- -- — -193---0 50- 260'�- - -96---70-130---`— -- ------- - --- <br /> Xylenes(total) wY 590 050 600 98 70-130 <br /> Surrogate a a a-Trifluorotoluene 306 300 101 70-130 <br /> LCS(IK27002-BS3) Prepared&Analyzed 30-Nov-01 <br /> Benzene I7 0 050 ugll 200 85 70-130 <br /> Toluene 18 3 050 200 92 70-130 <br /> Ethylbenzene 196 0 50 200 98 70-130 <br /> Xylenes(total) 595 050 600 99 70-130 <br /> Surrogate a a a-Trifluorotoluene 300 " 300 100 70-130 <br /> Sequoia Analytical-Walnut Creek The results in this report apply to the samples analyzed in accordance with the chip <br /> custody document This analytical report must be reproduced to us enti <br /> 15 of 19 <br />