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Sequoia <br />Analytical <br />r <br />404 N Wlget Lane <br />Walnut Creek, CA 94598 <br />(925) 988-9600 <br />FAX (925) 988-9673 <br />www sequo%labs com <br />Gettler Ryan, Inc -Dublin ProjeLt Chevron <br />6747 Sierra Court Suite J Project Number Chevron # 9-5775 Reported <br />Dublin CA 94568 Project Manager Scott Polston 24 -Jul -00 11 33 <br />Total Purgeable Hydrocarbons (C6-02) and BTEX by DHS LUFT <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />Analvte Result Lmut Units Dilution Batch Prepared Analvzed Method Notes <br />Effluent (W007143-03) Water Sampled <br />10 -Jul -00 11 20 Received 10 -Jul -00 13 20 <br />Purgedble Hydrocarbons <br />ND <br />50 <br />ugrl 1 OGI0001 10 Jul -00 10 -Jul -00 DHS LUFT <br />Benzene <br />ND <br />050 <br />" <br />Toluene <br />ND <br />050 <br />Ethylbenzene <br />ND <br />0 50 <br />" <br />Xylenes (total) <br />ND <br />050 <br />" <br />Surrogate a,a,a-Trifluorotoluene <br />107% <br />70-130 <br />MP -2 (W007143-04) Water Sampled 10,Iul-00 11 28 <br />Received <br />t0 -Jul -00 13 20 <br />Purgedble Hvdrocarbons <br />ND <br />50 <br />ug/l l OG10001 10 -Jul 00 10 -Jul -00 DHS LUFT <br />Benzene <br />ND <br />0 50 <br />" <br />Toluene <br />ND <br />0 50 <br />" <br />Ethylbenzene <br />ND <br />0 50 <br />" <br />Xylenes (total) <br />ND <br />0 50 <br />" <br />urrogate a a a-Trifluorotoluene <br />101 % <br />70-130 " <br />-1 (W007143-05) Water Sampled 104ut-00 1132 <br />Received <br />10 -Jul -0013 20 <br />Purgeable Hydrocarbons <br />ND <br />50 <br />ug/1 1 OG10001 10 -Jul -00 10 -Jul -00 DHS LUFT <br />Benzene <br />ND <br />050 <br />" <br />Toluene <br />ND <br />050 <br />" <br />Ethylbenzene <br />ND <br />050 <br />Xylenes (total) <br />ND <br />050 <br />" <br />Surrogate a a,a-Trtfluorotoluene <br />100% <br />70-130 <br />Influent (W007143-06) Water Sampled <br />10,Jul-00 1136 Received 10,Iul-00 13 20 <br />Purgeable Hydrocarbons <br />31000 <br />5000 <br />ug/l 100 OG10001 la -Jul -00 10 -Jai -00 DHS LUFT D-06 <br />Benzene <br />2800 <br />50 <br />" <br />Toluene <br />ND <br />50 <br />Ethylbenzene <br />ND <br />50 <br />" <br />Xylenes (total) <br />ND <br />50 <br />" <br />Surrogate a a,a-Trifluorotoluene <br />913% <br />70-130 <br />�equota Analytical - Walnut Creek The results in this report apply to the samples analyzed to accordance with the chain of <br />custody document This analytical report must be reproduced rip its entirety <br />Page 2 of 15 <br />