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Sequoia <br />404 N W Set Lane <br />Walnut Geek CA 94598 <br />(925) 988-9600-960D <br />FAX (925) 988-%73 <br />Analytical <br />W <br />Gettler Rran inc - Dublin Projeu Chevron <br />6747 Sierra Court Suite J Project Number Chevron 49-5775 Reported <br />Dublin CA, 94568 Project Manager Scott Polston 25 -Jul -00 10 44 <br />Total Purgeable Hydrocarbons (C6 -C12) and BTEX in Air by DHS LUFT - Quality Control <br />Sequoia Analytical - Walnut Creek <br />Reportmg Spike Source %REC RPD <br />kaalvte Result Limit Units Level Result %REC Ltiluts RPD Lmut Notes <br />Batch 0605016 - EPA 5030E [PIT] <br />LCS Dup (OG05016-BSDI) <br />Prepared 03 -Jul -00 Analyzed 05 -Jul -00 <br />Benzene <br />137 <br />0 010 <br />mg/m' Air 200 685 65-120 <br />215 <br />25 <br />Toluene <br />145 <br />0 010 <br />200 72 5 65-120 <br />215 <br />25 <br />Ethylbenzene <br />167 <br />0 010 <br />200 835 65-120 <br />228 <br />25 <br />xylenes (total) <br />470 <br />0 010 <br />600 783 65-120 <br />21 3 <br />25 <br />Surrogate a a a-Tn+Jluorotolvene <br />514 <br />600 85 7 70-130 <br />Analytical - Walnut <br />• <br />The results rn this report apply to tie samples arabced in aecordaue with the <br />custody document Thu analytical report must be reproduced is its <br />Page 15 of 25 <br />