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404 N Wiget lane <br /> Sequoia Walnut Creels CA 94598 <br /> (925)988-9600 <br /> Analytical www <br /> 988-9673 <br /> seguoequo ialabs corn <br /> Gettler Ryan Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite J Project Number Unocal#2859 Reported: <br /> Dublin CA 94568 Project Manager Scott Polston IO-Jul-01 11 15 <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 /> VE-3@808 tW 106448-01)Air Sampled 22-Jun-01 08 08 Received 22-Jun-01 1527 <br /> Purgeable Hydrocarbons 1100 500 mg/m'Air 10 1F22003 25-Jun-01 25Jul-0l DHS LUFT P-01 <br /> Benzene 5 6 5 0 ^ ^ <br /> Toluene 17 5 0 <br /> Ethylbenzene 18 5 0 " ^ <br /> Xylenes(total) 150 5 0 <br /> Methvl tert-butvl ether ND 25 CC-3 <br /> Surrogate a a a-Trifluorotoluene 102% 70-130 " <br /> EFFLUENT(W106448-02)Air Sampled 22-Jun-01 12 07 Received 22-Jun-01 15 27 <br /> Purgeable Hvdrocarbons ND 10 mg/ml Air 02 l F22003 25-Jun-01 25-Jul-0I DHS LUFT <br /> Benzene ND 010 <br /> �Toluene ND 010 " <br /> thylbcnzene ND 010 <br /> Xylenes(total) ND 010 ^ <br /> Methyl tert-butvl ether ND 050 <br /> Surrogate a a a-Trifluorololuene 877% 70-130 " <br /> VE-3(aD1210(W I06448-03)Air Sampled 22-Jun-01 12 10 Received 22-Jun-01 15 27 <br /> Purgeable Hydrocarbons 400 200 mg/ml Air 4 I F22003 25-Jun-01 25 Jul-01 DHS LUFT P-01 <br /> Benzene 2 9 2 0 " <br /> Toluene 5 5 2 0 " <br /> Ethylbenzene 5 6 2 0 ~ " <br /> Xylenes(total) 39 2 0 ~ " <br /> Methvl tert-butvl ether ND 10 CC-3 <br /> Surrogate a a a-Trifluorotoluene 983% 70-130 " <br /> • <br /> Sequoia Analytical- Walnut Creek The results to this report apply to the samples analyzed in accordance with the chain od <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 2 of 7 <br />