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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 />Gettler Ryan Inc -Dublin Project Chevron <br />6747 Sierra Court Suite 1 Project Number Chevron SS49-5775 Reported <br />Dublin CA 94568 Project Mandger Scott Polston 21 -Apr -00 10 43 <br />Total Purgeable Hydrocarbons (C6 -C12) and BTEX in Air by DHS LUFT <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />Analvte Result Limit Units Dilution Batch Prepared Anahzed Method Notes <br />INF (WO04445-01) Air Sampled <br />18 -Apr -00 07 44 <br />Received 19 -Apr -00 16 05 P-02 <br />Purgeable Hydrocarbons <br />8000 <br />200 mg/ml Air 20 OD14004 20 -Apr 00 20 -Apr 00 DHS LUFT <br />Benzene <br />1500 <br />1 0 <br />Toluene <br />1700 <br />1 0 <br />Eth}lbenzene <br />120 <br />1 0 <br />Xylenes (total) <br />520 <br />1 0 <br />Surrogate a a a-Tnfluororoluene <br />177 % 70-130 S-04 <br />EFF (WO04445-02) Air Sampled <br />18 -Apr -00 07 42 <br />Received 19-Apr4)0 16 05 P-01 <br />Purgeable Hydrocarbons <br />1.10 <br />20 mr/m3 Air 2 OD14004 20 -Apr -00 20--1pr 00 DHS LUPI' <br />Benzene <br />6 1 <br />0 10 <br />Toluene <br />20 <br />010 <br />Ethylbenzene <br />38 <br />010 <br />Xylenes (total) <br />25 <br />0 10 " <br />Surrogate a a,a-Trrfluorotoluene <br />933% 70-130 <br />Sequoia Analvtical - Walnut Creek <br />The results in this report apply to the samples analyzed in accordance with the churn of <br />custody document This analytical report must be reproduced in its erihrety <br />0 <br />Page 2 of 8 <br />