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^Sequoia <br />Analytical <br />404 N Wiget Lane <br />Walnut Creek CA 94598 <br />(925) 988 9600 <br />FAX (925) 988-9673 <br />www sequoialabs com <br />�utai rurgeaote Hydrocarbons t% -64-1L) and is LEX to Air (ppmv) by uric LUFF <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />Analyte Result Limit Units Dilution Batch Prepdred Anahzed Method Note: <br />Eff (07 56) (WO04304-01) Air <br />Sampled <br />12 -Apr -00 07 56 <br />Recen ed <br />'Unier Rvan Inc - Dublin <br />Project <br />Chevron <br />270 <br />6747 Sierra Court Suite J <br />Project Number <br />Chevron # 9-5775 <br />Reported <br />Dublin CA 94568 <br />Project Manager <br />Scott Polston <br />18 -Apr -00 11 39 <br />�utai rurgeaote Hydrocarbons t% -64-1L) and is LEX to Air (ppmv) by uric LUFF <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />Analyte Result Limit Units Dilution Batch Prepdred Anahzed Method Note: <br />Eff (07 56) (WO04304-01) Air <br />Sampled <br />12 -Apr -00 07 56 <br />Recen ed <br />13 -Apr -00 17 10 <br />Purgeable Hydrocarbons <br />270 <br />24 ppm,, 1 OD14004 14 -Apr 00 l4 -Apr 00 DHS LUFT <br />Benzene <br />34 <br />0 016 <br />Toluene <br />87 <br />0 013 <br />Ethylbenzene <br />13 <br />0 012 <br />" <br />Xylenes (total) <br />61 <br />0 012 <br />Inf (07 59) (W0043044112) Air <br />Sampled <br />12 -Apr -00 07 59 <br />Recened <br />13 -Apr -00 17 10 <br />Purgeable Hydrocarbons <br />3600 <br />2 4 ppmv <br />1 OD14004 14 -Apr -00 1¢apr 00 DHS LUFT <br />Benzene <br />880 <br />0 016 <br />~ <br />Toluene <br />880 <br />0 013 <br />^ <br />Ethylbenzene <br />54 <br />0 012 <br />Xylenes (total) <br />230 <br />0 012 <br />" <br />Efi(15 15) (WO04304-03) Air <br />Sampled <br />12 -Apr -00 15 15 <br />Received <br />13 -Apr -0017 10 <br />Purgeable Hydrocarbons <br />650 <br />24 ppmv 1 OD14004 14 -Apr -00 14 -Apr -00 DHS LUFT <br />150 <br />0 016 <br />*ne <br />ne <br />290 <br />0 013 <br />^ ^ ^ <br />Ethylbenzene <br />40 <br />0 012 <br />^ ^ <br />Xylenes (total) <br />190 <br />0 012 <br />^ ~ <br />Inf (15 2.5) (WO04304-04) Air <br />Sampled <br />12 -Apr -0O 15 25 <br />Received <br />13 -Apr -0017 10 <br />Purgeable Hydrocarbons 3300 24 ppmv I OD14004 14 -Apr -00 14 -Apr -00 DHS LUFT <br />Benzene 830 0 016 <br />Toluene 700 0 013 <br />Ethylbenzene 50 0012 <br />Xylenes (total) 250 0 012 ^ " <br />Sequoia Analvtical - Walnut Creek The results in this report apply to the samples analved in accordance with the churn of <br />9 custody document This analytical report must be reproduced to its entirety <br />Page 4 of 22 <br />