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et Lane <br /> Sequoia WalnutCreek CA 94598 <br /> 4 (925)988-9600 <br /> Gf—! Analytical FAX I9Z51 aJabs C 73 <br /> www seq�owlabs coin <br /> Gettier 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 15 <br /> Total Purgeable Hydrocarbons (C6-C12) and BTEX in Air by DHS LUFT <br /> Sequoia Analytical - Walnut Creek <br /> Reporting <br /> Anaiyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> VE-3@808(W106448-01)Air Sampled 22-Jun-01 08 08 Received 22-Jun-01 1527 <br /> Purgeable Hydrocarbons 330 28 ppmv l IF22003 25-Jun-01 25-Jul-01 DHS LUFT <br /> Benzene 0 18 0 016 " <br /> Toluene 4 5 0 013 <br /> Ethylbenzene 43 0 012 " <br /> Xylenes(total) 34 0 012 " <br /> Methyl tert-butyi ether ND 0 14 <br /> EFFLUENT(W106448-02)Air Sampled 22-Jun-01 12 07 Received 22-Jun-01 15 27 <br /> Purgeable Hydrocarbons ND 2 8 ppmv I IF22003 25-Jun-O i 25-Jul-O I DHS LUFT <br /> Benzene ND 0 016 " <br /> Toluene ND 0 013 <br /> Ethylbenzene ND 0 012 " <br /> •.ylenes(total) ND 0 012 R n <br /> Methyl tert-butyl ether ND 0 14 " <br /> VE-3@1210(W106448-03)Air Sampled 22-Jun-01 12 10 Received 22-Jun-01 15 27 <br /> Purgeable Hydrocarbons 110 2 8 ppmv 1 1F22003 25-Jun-01 25-Jul-Ol BHS LUFT <br /> Benzene 092 0 016 " <br /> Toluene 14 0 013 <br /> Ethylbenzene 13 0 012 " <br /> Xylenes(total) 9 0 0 012 " <br /> Methyl tert-butyl ether ND 0 14 " <br /> VE-3@1405(WI06448-04)Air Sampled 22-Jun-01 14 05 Received 224un-01 15 27 <br /> Purgeable Hydrocarbons 46 2 8 ppmv I IF22003 25-Jun-Oi 25-Jul-01 DHS LUFT <br /> Benzene ND 0 016 " <br /> Toluene 067 0 013 " <br /> Ethylbenzene 047 0 012 ^ <br /> Xylenes(total) 37 0 012 <br /> Methyl Cert-butyl ether ND 014 <br /> • <br /> Sequoia Analytical- Walnut Creek The results to this report apply to the samples analyzed to accordance with the chain oj <br /> custody document This analytical report must be reproduced to its entirety <br /> Page 4 of 7 <br />