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H <br /> Sequoia Walnut Creek,CA 94598 <br /> (925) 988-9600 <br /> Analytical FAX(925) 988-9673 <br /> fttler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite 7 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 <br /> Sequoia Analytical -Walnut Creek <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> TB-LB(W911614-01)Water Sampled 22-Nov-990000 Received 22-Nov-992000 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 9K30001 30-Nov-99 30-Nov-99 EPA <br /> Benzene ND 0 50 IF It IF " 8015M/8020 <br /> Toluene ND 0 50 IF It It IF " I. <br /> Ethylbenzene ND 050 IF IF IF <br /> " " <br /> Xylenes(total) ND 0 50 IF IF IF <br /> Methyl tent-butyl ether ND 2 5 It IF " It <br /> Surrogate a a a-Thfluorotoluene 967% 70-130 " <br /> MW-1 (W911614-02)Water Sampled 22-Nov-99 13 58 Received 22-Nov-99 20 00 <br /> Purgeable Hydrocarbons ND 50 ug/1 1 9K30001 30-Nov-99 30-Nov-99 EPA <br /> Benzene ND 0 50 IF IF I. 8015M/8020 <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 050 IF IF " <br /> Xylenes(total) ND 050 " <br /> J&thyl tert-butyl ether 3 3 2 5 " <br /> gate a,a,a-Tnfluorotoluene 100% 70-130 " <br /> MW-2(W911614-03)Water Sampled 22-Nov-99 16 20 Received 22-Nov-99 20 00 P-01 <br /> Purgeable Hydrocarbons 21000 1000 ug/l 20 9K30001 30-Nov-99 30-Nov-99 EPA <br /> Benzene 1000 10 8015M/8020 <br /> Toluene 4600 10 " <br /> Ethylbenzene 2800 10 <br /> Xylenes(total) 9400 10 " <br /> Methyl tert-butyl ether ND 50 <br /> Surrogate a a a-Tnffuorotoluene 123% 70-130 " <br /> Sequoia Analytical-Walnut Creek The results in rks report apply to the samples analyzed tri wcordmtce with rhe chain of <br /> custody document This analytical report must be reproducedin tis enirreo, <br /> emp, a <br /> ?ratory Director Page 2 of 17 <br />