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Sequoia <br />� Analytical <br />404 N Wlget Lane <br />Walnut Geek CA 94598 <br />(925) 988.9600 <br />FAX (925) 988-9673 <br />www seclurolalal <br />Gettler Rvan, Inc - Dublin Project Chevron <br />6747 Sierra Court Suite J ProjectNuinber Chevron # 9-5775 Reported <br />Dublin CA 94568 Project Manager Scott Polstan 25 -Jul -00 10 44 <br />Volatile Organic Compounds by EPA Method 8260A - Quality Control <br />Sequoia Analytical - Walnut Creek <br />Reporting Spike Source %REC RPD <br />vte Result Limit Units Level Result %REC Lirluts RPD Limit Nates <br />Batch 0008002 - EPA 5030B [P/TJ <br />Matrix Spike Dup (OG08002-MSDI) <br />Source W006678-18 <br />Prepared & Analyzed 06 -Jul -00 <br />1,1-Dichloroeth ne <br />600 <br />20 UO <br />Soo <br />ND <br />120 <br />60-140 <br />166 <br />25 <br />Methyl tent-butvi ether <br />579 <br />20 <br />500 <br />116 <br />60-140 <br />940 <br />25 <br />Byrne <br />626 <br />to <br />500 <br />ND <br />125 <br />60-140 <br />172 <br />25 <br />Tnehloroethene <br />510 <br />20 <br />500 <br />3 1 <br />958 <br />60-140 <br />0 587 <br />25 <br />Toluene <br />567 <br />20 <br />500 <br />ND <br />113 <br />60-140 <br />189 <br />25 <br />Chlorobenzene <br />576 <br />20 <br />500 <br />ND <br />115 <br />60-140 <br />16 7 <br />25 <br />Surrogate Dtbromofiuoromethane <br />530 <br />500 <br />106 <br />50-150 <br />Surrogate I1-Dichloroethane-d4 <br />330 <br />500 <br />106 <br />50-150 <br />Surrogate Toluene -d8 <br />Soo <br />Soo <br />100 <br />50-150 <br />Surrogate 4-BromoJluorobenzene <br />520 <br />500 <br />104 <br />50-150 <br />lr7 <br />u <br />Sequoia Analytical - Walnut Creek The resells in flus report apply to the samples analyzed in accordance with the c <br />custody documem Thus anatyheal report must be reproduced to res e <br />Page 23 of 25 <br />