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Sia <br /> 404 N Wlget Lane <br /> equola Walnut Creek,CA 94598 <br /> (925)9$8-9670 <br /> Analytical <br /> FAX(925)988-9673 <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 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 Limit Units Level Result °/oREC Lunits RPD Lunit Notes <br /> Batch 9K30001• Prepared 30-Nov-99 Using EPA 5030B [PIT] <br /> Blank(9K30001-BLKI) <br /> Purgeable Hydrocarbons ND 50 ug/l <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 aaa-Tri luorotoluene 313 300 104 70-130 <br /> LCS(9K30001-BS1) <br /> Benzene 200 050 ug/1 200 100 70.130 <br /> Toluene 201 0 50 200 101 70-130 <br /> 0yie <br /> lbenzene 199 0 50 200 995 70-130 <br /> nes(total) 620 0 50 600 103 70-130 <br /> Surrogate a a a-Trii luororoluene 304 300 101 70-130 <br /> Matrix Spike(9K30001-MSI) Source W911614-08 <br /> Benzene 196 0 50 ug/l 200 ND 980 70-130 <br /> Toluene 200 0 50 200 ND 100 70-130 <br /> I <br /> Ethylbenzene 177 050 200 ND 885 70.130 <br /> Xylenes(total) 612 050 60 0 ND 1,02 70-130 <br /> Surrogate a a a-Trii luorotoluene 296 300 98 7 70.130 <br /> Matrix Spike Dup(9K30001-MSD1) Source W911614-08 <br /> Benzene 197 050 ug/l 200 ND 98 5 70-130 0 509 20 <br /> Toluene 201 050 200 ND 101 70-130 0 499 20 <br /> Ethylbenzene 203 050 200 ND 101 70-130 13 7 20 <br /> Xylenes(total) 623 050 600 ND 104 70-130 l 78 20 <br /> Surrogate as a-TnJluorotaluene 306 300 102 70.130 <br /> Sequoia Analytical-Walnut Creek The results'to this report apply to the samples analyzed in accordwice with the chrmn of <br /> custody document This analytical report must be reproduced in i is ennrety <br /> IanMeratory rector p <br /> a8e 12 of 17 <br />