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Sequoia <br />Analytical <br />Gettler Ryan, Inc -Dublin Project Cheaper <br />6747 Sierra Court Suite ! Project Number Chevron # 9-5775 <br />Dublin CA, 94568 Project Manager Scott Polston <br />Total Purgeable Hydrocarbons (C6 -C12) and BTEX in Air by DHS LUFT <br />Sequoia Analytical - Walnut Creek <br />404 N Wiget Lane <br />Walnut Creek CA 94598 <br />(925)988-9600 <br />FAX (925) 988-9673 <br />www sequolalabs com <br />Reported <br />12 -Apr -00 11 36 <br />Reporting <br />Analyte Result Limit Units Dilution Batch Prepared Analvzed Method Note; <br />INF (09 53) (W004172-01) Air <br />Sampled 06 -Apr -00 09 53 <br />Received 07 -Apr -00 17 45 <br />Y-02 <br />Purgeable Hy drocarbons <br />26000 <br />200 mg/m' Air 20 OD10015 08 Apr 00 08 -Apr 00 DHS LUFT <br />Benzene <br />4900 <br />10 " <br />Toluene <br />6600 <br />10 " <br />Ethylbenzene <br />450 <br />10 " <br />Xylenes (total) <br />2000 <br />1 0 " <br />Surrogate a a a -Tri luorotoluene <br />383 % 70-130 <br />S-04 <br />EFF (09 59) (W004172-02) Air <br />Sampled 06 -Apr -00 09 59 <br />Received 07 -Apr -00 17 45 <br />P-01 <br />Purgeable Hydrocarbons <br />200 <br />20 mg/ml Air 02 ODi0015 08 -Apr -00 08 -Apr -00 DHS LUFT <br />Benzene <br />12 <br />0 010 " <br />Toluene <br />50 <br />0 010 " <br />Ethylbenzene <br />9 4 <br />0 010 " <br />Xylenes (total) <br />SO <br />0 010 <br />Surrogate a a,a-Trrfluorotoluene <br />127% 70-130 " <br />INF (16 49) (W004172-03) Air <br />Sampled 06 -Apr -00 16 49 <br />Received 07 -Apr -00 17 45 <br />P-0 <br />Purgeable Hydrocarbons <br />20000 <br />200 mg(m3 Air 20 OD10015 08 -Apr -00 08 -Apr -00 DHS LUFT <br />Benzene <br />3600 <br />10 " <br />Toluene <br />4400 <br />10 " <br />Ethylbenzene <br />350 <br />10 " <br />Xylenes (total) <br />1600 <br />10 " <br />Surrogate a a a-Trfluarotoluene 260% 70-130 S-04 <br />EFF (16 47) (W004172-04) Air Sampled 06 -Apr -00 16 47 Received 07 -Apr -00 17 45 P-01 <br />Purgeable Hydrocarbons 18 2 0 mglm' Air 02 OD10015 08 -Apr -00 08 -Apr -00 DHS LUFT <br />Benzene 080 0 010 " <br />Toluene 092 0 010 " <br />Ethylbenzene 032 0 010 <br />Xylenes (total) 2 8 0 010 <br />Surrogate a a a-Trrfluorotoluene 950% 70-130 1" <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 reproducedin its, entirety* <br />Page 3 of 12 <br />t� <br />