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Sequoia <br />Analytical <br />Gettler Ryan Inc - 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 Creek CA 94598 <br />(925) 98&9600 <br />FAX (925) 988-9673 <br />www sequoialabs corn <br />Reported <br />09 -May -00 11 21 <br />Reporting <br />Analvte Result Litrut Units Dilution Batch Prepared Analvzed Method Note; <br />EFF 1 (08 05) (WO05160-01) Air <br />Sampled 04 -May -00 08 05 Received 05-Mav-00 14 40 <br />Purgeable Hydrocarbons <br />ND 24 ppmv 1 OE08013 <br />06 -May 00 06 -May -00 DHS LUFT <br />Benzene <br />016 0 016 " <br />" " <br />Toluene <br />030 0 013 " <br />Ethylbenzene <br />0 050 0 012 <br />" <br />Xylenes (total) <br />032 0 012 <br />" <br />Methyl tert-butyl ether <br />ND 014 " <br />EFF 2 (15 10) (W005160-02) Air <br />Sampled 04 -May -0015 10 Received 05 -May -00 14 40 <br />Purgeable Hydrocarbons <br />4 2 24 ppmv I OE08013 <br />06 -May -00 06 -May -00 DHS LUFT <br />Benzene <br />023 0 016 " 11 11 <br />" <br />Toluene <br />043 0 013 1" <br />Ethylbenzene <br />0 058 0 012 <br />Xylenes (total) <br />046 0 012 " <br />Methyl tert-butyl ether <br />023 014 1" <br />INF 1 (08 20) (WO05160-03) Air <br />Sampled 04 -May -00 08 20 Received 05 -May -00 14 40 <br />Purgeable Hydrocarbons <br />2100 24 ppmv l OE08013 <br />06 -May -00 06 -May -00 DHS LUFT <br />Benzene <br />550 0 016 <br />Toluene <br />450 0 013 <br />" <br />Ethylbenzene <br />19 0 012 <br />Xylenes (total) <br />85 0 012 <br />Methyl tent -butyl ether <br />2400 014 <br />" <br />INF 2 (15 20) (W005160-04) Air <br />Sampled 04 -May -00 15 20 Received 05 -May -00 14 40 <br />Purgeable Hydrocarbons <br />890 24 ppmv 1 OE08013 <br />06 -May -00 06 -May -00 DHS LUFT <br />Benzene <br />300 0 016 <br />Toluene <br />210 0 013 <br />Ethylbenzene <br />7 8 0 012 <br />Xylenes (total) <br />41 0 012 <br />" <br />Methyl tert-butyl ether <br />1400 014 <br />" <br />Sequoia Analytical - Walnut Creek The results 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 entirety <br />Page 4 of 11 <br />ice*. <br />