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Sequoia <br />� Analytical <br />Gettler Rvan hti. - Dublin Project Chevron <br />6747 Sierra Court Suite J Project Number Chevron # 9-5775 <br />Dublin CA 94568 Project Manager Scott Polston <br />Total Purgeable Hydrocarbons (C6 -C12) and BTEX 1n Air by DHS LUFT <br />Sequoia Analytical - Walnut Creek <br />404 N Wiget lane <br />Walnut Geek CA 94598 <br />(925)9W9600 <br />FAX (925) 988-9673 <br />www sequolalabs com <br />Reported <br />18 -Apr -00 11 39 <br />Reporting <br />4nahte Result Limit Units Dilution Batch Prepared AnaIN zed Method Note: <br />Eff (07 56) (WO04304-01) Air Sampled <br />12 -Apr -00 07 56 <br />Received <br />13 -Apr -00 17 10 P-01 <br />Purgeable Hydrot.arbons <br />1100 <br />20 mglm' <br />Air 2 01314004 14 -Apr -00 14 -Apr 00 DHS LUFT <br />Bcnzene <br />110 <br />0 10 <br />Toluene <br />330 <br />0 10 <br />Ethylbenzene <br />55 <br />0 10 <br />Xylenes (total) <br />260 <br />0 10 <br />Surrogate a a a -Tr i luorotoluene <br />116% <br />70-130 <br />Inf (07 59) (WO04304-02) Air Sampled <br />12 -Apr -00 07 59 <br />Received <br />13 -Apr -00 17 10 P-02 <br />Purgeable Hydrocarbons <br />15000 <br />200 mWm' <br />Air 20 OD14004 14 -Apr 00 14-4pr 00 DHS LUFT <br />Benzene <br />2800 <br />1 0 <br />" <br />Toluene <br />3300 <br />10 <br />Ethvlbenzene <br />230 <br />1 0 <br />Xylenes (total) <br />1000 <br />10 <br />Surrogate a a a-Trrfluorotoluene 218% 70-130 S-04 <br />Eff(15 15) (W004304-03) Air Sampled 12 -Apr -00 15 15 Received 13 -Apr -00 17 10 <br />Purgeable Hydrocarbons 2700 20 mg/m' Air 2 OD14004 14 -Apr -00 14 -Apr -00 DHS LUFT <br />Benzene 460 0 10 <br />Toluene 1100 010 ^ <br />Ethylbenzene 180 010 " - - <br />Xylenes (total) 830 0 10 <br />Surrogate a a,a-Trtfluorotoluene 195% 70-130 ^ ^ S-04 <br />Inf (15 25) (W004304-04) Air Sampled 12 -Apr -00 15 25 Received 13 -Apr -00 17 10 P-02 <br />Purgeable Hydrocarbons 13000 200 mg/m' Air 20 OD14004 14 -Apr -00 14 -Apr -00 BHS LUFr <br />Benzene 2600 10 « « « <br />Toluene 2700 10 ^ « <br />Ethylbenzene 220 10 <br />Xylenes (total) 1100 10 <br />Surrogate a,a a-Trrfluorotoluene 190% 70-130 S-04 <br />Sequoia Anal} tical - Walnut Creek Tire revulis 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 enrrrO <br />Page 3 of 22 <br />