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404 N Wiget Lane <br /> Walnut Creek,CA 94598 <br /> Sequoia (925)988-9600 <br /> FAX(925)988-9673 <br /> 1 Analytical `"'W'" `'"°`a' `° <br /> Gettler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite J Project Number Unocal#0123 Reported <br /> Dubhn CA,94565 Project Manager Deanna L Harding 07-Apr-00 15 41 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical -Walnut Creek <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> TB-LB(WO03457-01)Water Sampled 16-Mar-00 00 00 Received 17-Mar-00 16 25 <br /> Purgeable Hydrocarbons ND 50 ug/l I OC28003 28-Mar-00 28-Mer-00 EPA <br /> 8015M/8020 <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-Tnfluorotoluene 121 % 70-130 " <br /> U-1 (WO03457-02)Water Sampled 16-Mar-00 14 00 Received 17-Mar-0016 25 <br /> Purgeable Hydrocarbons ND 50 ug/1 1 OC30001 30-Mar-00 30-Mar-00 EPA <br /> 8015M/8020 <br /> Benzene ND 050 n It " <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 ^ " <br /> Methyl tert-butyl ether 30 25 <br /> Surrogate a,a,a-Trifluorotoluene 103 % 70-130 " <br />=U-2(WO03457=03)Water=Sampled_16-Mar_-00_13 34=Receiy_ed;17-Mar-00 16 25 <br />—Purgeable Hydrocarbons ND 50—ugfl 1 OC28001-28•Mar-00-2&Mar-00 EPA <br /> 8015M/8020_ <br /> Benzene ND 050 <br /> -Toluene - - - _ - -ND- - - _- 0 50 - - -" "- - - -- - - - <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether 42 25 " <br /> Surrogate a,a,a-Trtfluorotoluene 963% 70-130 " <br /> Sequoia Analytical-Walnut Creek The results to this report apply to the samples anal aed to accordance with the chain o <br /> custody document.This analytical report must be reproduced in its entirety <br /> Page 2 of 18 <br />