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Sequoia 4oaN wlLane <br /> Walnut Creek CAA 94598 <br /> 4 (9Z5)988-9600 <br /> FAX 1925)988-967-1 <br /> 1%0 Analytical www seqLKmauibs cam <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 10-Jul-01 11 20 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical - Walnut Creek <br /> Reporting <br /> Analytc Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> VE-2Cq�)1158(W106451-01)Air Sampled 20-Jun-01 11 58 Received 22-Jun-01 1555 <br /> Purgeable Hvdrocarbons ND 10 mg/ml Air 02 I F22003 25-Jun-01 25-lu1-01 DHS LUFT <br /> Benzene ND 010 " <br /> Toluene ND 010 " <br /> Ethvlbenzene ND 010 " <br /> Xylenes(total) ND 0 10 " <br /> Methvl cert-butyl ether ND 0 50 " <br /> Surrogate a a a-Trifluorotoluene 870% 70-130 " <br /> VE-IQ740(W106451-02)Air Sampled 21-Jun-01 07 40 Received 22-Jun-01 1555 <br /> Purgeable hydrocarbons 240 200 mg/ml Air 4 IF22003 25-Jun-01 25-Jul-01 DHS LUFT P-02 <br /> Benzene 70 2 0 " <br /> meToluene 70 2 0 " <br /> thylbenzene ND 20 ^ <br /> Xylenes(total) 3.7 2 0 " <br /> Methyl tert-butyl ether ND 10 CC-3 <br /> Surrogate a a a-Trifluorotoluene 108% 70-130 -- --'— -� <br /> EFFLUENT(Wi06451-03)Air Sampled 21-Jun-01 11 30 Received 22-Jun-01 1555 <br /> Purgeable Hydrocarbons ND 10 mg/ml Air 0 2 I F22003 25-Jun-01 25-Jul-01 DHS LUFT <br /> Benzene ND 010 " <br /> Toluene ND 010 " <br /> Ethylbenzene ND 010 " <br /> Xylenes(total) ND 010 " <br /> Methyl tent-butyl ether ND 050 " <br /> Surrogate a a a-Trifluorotoluene 140% 70-130 S-03 <br /> Sequoia Anaiytical- Walnut Creek The results in this report apply to the samples analyzed to accordance with the chain o <br /> custody document This analytical report musi be reproduced in its entirety <br /> Page 2 of 8 <br />