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404 N Wiget Lane <br /> Sequoia Walnut o-eek,CA 94598 <br /> (925)988-9600 <br /> Analytical FAX(916)988-9673 <br /> www se uotalabs can <br /> 97 er Ryan,Inc -Dublin Project Unocal <br /> 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 (Cb-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 /> MW-7(W111332-07)Water Sampled 16-Nov-011055 Received 20-Nov-01 12 15 _ <br /> Purgeable Hydrocarbons(C6-C 12) ND 50 ug/1 1 1 K30003 30-Nov-01 30-Nov-01 EPA <br /> 801 SM/8021 <br /> Benzene ND 050 ^ <br /> Toluene 15 050 ^ " <br /> Ethylbenzene ND 050 " TM <br /> Xylenes(total) 2 2 050 " <br /> Methyl tert-butyl ether(MTBE) ND 25 " <br /> Surrogate a,a,a-Tnfluorotoluene 102 % 70-130 " <br /> MW-8 111332-08 Water Sampled 16-Nov-0115 14 Received 20-Nov-0112 15 <br /> Purgeable Hydrocarbons(C6-C12) ND 50 ug/1 I 1K20001 20-Nov-01 20-Nov-01 EPA <br /> 8015M/8021 <br /> Benzene ND 050 " " " " " " <br /> Toluene 10 050 " Q-28b <br /> Ethylbenzene ND 050 ^ " <br /> es(total) 10 050 " <br /> 1 tert-butyl ether(MTBE) ND 2 5 ^ <br /> Surrogate a,a,a-Trifluorotoluene 112 % 70-130 " <br /> MW-9 M111332-09 Water Sampled 16-Nov-01 15 54 Received 20-Nov-01 12.15 <br /> Purgeable Hydrocarbons(C6-02) 56 50 ug/1 1 IK27002 30-Nov-01 30-Nov-01 EPA HC-12 <br /> 8015MI8021 <br /> Benzene ND 050 ^ <br /> Toluene 2 2 050 <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) 28 0 50 " <br /> Methyl tert-butyl ether(MTBE) 74 2 5 <br /> Surrogate a,a,a-Trifluorotoluene 105 % 70-130 " <br /> is Analytical - Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> 4of19 <br />