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Sequoia WalnutOreWCAA 9a 98 <br /> (925)988-9600 <br /> Analytical FAX(916)988-9673 <br /> www se uoialabs can <br /> ler Ryan,Inc -Dublin Project Unocal <br /> 7 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 Purgeablc 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 /> MW-19(W111332-19)Water Sampled 16-Nov-01 11 45 Received 20-Nov-01 12_15 _ <br /> Purgeable Hydrocarbons(C6-C12) ND 50 ug/1 1 1K20001 21-Nov-01 21-Nov-01 EPA <br /> 8015MI8021 <br /> Benzene ND 0 50 <br /> Toluene 2 2 0 50 <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) 21 050 <br /> Methyl tert-butyl ether(MTBE) ND 25 <br /> Surrogate a,a,a-Trtfluorotoluene 128% 70-130 " <br /> NP-1 (W111332-20)Water Sampled 17-Nov-01 15 25 Received 20-Nov-01 12.15 _ <br /> Purgeable Hydrocarbons(C6-C 12) ND 50 u8/1 I 1K30003 30-Nov-01 30-Nov-01 EPA .. <br /> 8015M/8021 <br /> Benzene 14 0 50 " It <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 " ~ <br /> Xenes(total) ND 050 " <br /> 1#ert-butyl ether(MTBE) ND 25 ^ " 0-Q9 <br /> Surrogate a,a,a-Trtfluorotoluene 100% 70-130 <br /> TB-LB 111332-21 Water Sampled 16-Nov-01 00 00 Received 20-Nov-01 12.15 <br /> Purgeable Hydrocarbons(C6-C12) ND 50 ugll 1 IK21001 26-Nov-01 26-Nov-0I EPA <br /> 8015M/8021 <br /> Benzene ND 050 " ^ Q_28 <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 <br /> Methyl tert-butyl ether(MTBE) ND 25 " <br /> Surrogate a,a,a-Trsfluorotoluene 115 % 70-130 " <br /> to Analytical -Walnut Creek The results in this report apply to the samples analyzed to accordance with the chain of <br /> custody document This analytical report must be reproduced on its entirety <br /> 8of19 <br />