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' '404 N Mflget Lane Sequoia Walnut Geek, 0 � (M)988-9600 FAX(925)988-9673 Analytical www� corn z , Gettler Ryan,Inc -Dublin Project Unocal 6747 Sierra Court Suite l Project Number Unocal#8671 Reported Dublin CA,94568 Project Manager Deanna L Harding 14-Aug-00 07 49 Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT - - Sequoia Analytical -Walnut Creek - - Reporting Analyte Result Lmut Units Dilution Batch Prepared Analyzed Method Notes TB-LB(WO08010-01)Water Sampled 28-Jul-00 66 00 Received 31-Ju1-00 17 00 - _Purgeable Hydrocarbons_ ND 50_ ug/1 1 OH04002 04-Aug-OO 04- g-00 EPA — 8015M/8020 Benzene ND 050 " Toluene ND 050 " Ethylbenzene ND 050 " Xylenes(total) ND 050 " Methyl tent-butyl ether ND 2 5 Surrogate a,a,a-Tnfluorotoluene 933 % 70-130 " MW-1 (WO08010-02)Water Sampled 28-Jul-00 06 45 Received 31-Jul-00 17 00 Purgeable Hydrocarbons ND 50 ug/1 1 OH04002 04-Aug-00 04-Aug-00 z EPA z 8015M/8020 Benzene ND 0 50 Toluene ND 050 Ethylbenzene ND 050 Xylenes(total) ND 050 " Surrogate a,a,a-Tnfluorotoluene 943% 70-130 " MW-1 (WO08010-02RE1)Water Sampled 28t1ul-00 06 45 Received 31-Jul-0017 00 --Methyl tert-butyr 1700 250 u _ 100 OH04002 04-Aug-00 07-Aug-00 EPA Le thegl---- _ - - --- 8015M/8020 — —�T Surrogate a,a,a-Tnfluorotoluene 977% 70-130 " MW-2(WO08010-03)Water Sampled 28-Jul-00 08 35 Received 31-Jul-00 17 00 Purgeable Hydrocarbons J ND -=---x=50 ugll' -1- OH04002 -04 Aug-00" 04=Aug-00 ---EPA - -- 8015M/8020 Benzene ND 050 Toluene ND 050 Ethylbenzene ND 0 50 Xylenes(total)_ 4 ND 0 50 _ " Methyl tert-butyl ether ND 25 " Surrogate a,a,a-Tnfluorotoluene 930% 70-130 T Sequoia Analytical-Walnut Creek The results to this report apply to the samples analwed in accordance with the char custody document This analytical report must be reproduced in its enti Page 2 of 9