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Sequoia <br />low <br />Analytical <br />Gettler Ryan itic - Dublin <br />6747 Sierra Court Suite J <br />Dublin CA 94568 <br />Project Chevron <br />Project Number Chevron # 9-5775 <br />Project Manager Scott Polston <br />404 N Wlgetlane <br />Walnut Geek. CA 94598 <br />(925) 988-9600 <br />FAX (925) 988-9673 <br />www sequolalabs <br />Reported <br />25 -Jul -0010 44 <br />Total Purgeable Hydrocarbons (C6 -C12) and BTEX by DHS LUFT - Quality Control <br />Sequoia Analytical - Walnut Creek <br />Reporting Spike Source %REC RPD <br />Result Limit Units Level Result %REC Limits RPD Lunt Notes <br />Batch 0607003 - EPA 5030B [PITT <br />Blank (0007003-BLKI) Prepared & Analyzed 07 -Jul -00 <br />Purgeable Hydrocarbons ND 50 ugil <br />Benzene ND 050 " <br />Toluene ND <br />Ethylbenzene ND <br />Xylenes (total) ND <br />Surrogate aaa.TnJluorotoluene 308 <br />050 <br />050 " <br />050 <br />300 103 110.130 <br />LCS (0007003 -BSI) <br />Prepared & Analyzed 07 -Jul -00 <br />Benzene <br />196 <br />050 uel <br />200 980 70.130 <br />Toluene <br />202 <br />050 <br />200 101 70-130 <br />Ethylbenzene <br />213 <br />050 <br />200 106 70-130 <br />Xylenes (total) <br />61 l <br />050 <br />600 1.02 70-130 <br />$arrogate aaa-Trtfhtorotoluene <br />191 <br />" <br />300 970 70-130 <br />Matrix Spike (0007003 -MSI) <br />Source W006676-10 <br />Prepared & Analyzed. 07 -Jul -00 <br />Benzene <br />210 <br />050 ugn <br />200 ND 105 70-130 <br />Tohiene <br />212 <br />050 " <br />200 ND 106 70-130 <br />Mylb� <br />213 <br />050 <br />200 ND 106 70-130 <br />Xylenes (total) <br />619 <br />050 <br />600 ND 103 70-130 <br />Srenogatt aaa-TnJittorntotuen <br />171 <br />3Q0 9aJ 70.130 <br />Matrix Spike Dup (0007003-MSDI) <br />Source W006676-10 <br />Pnepated & Analyzed. 07-Ju1-00 <br />Benzene <br />197 <br />050 no <br />200 ND 98.5 70-130 <br />639 <br />20 <br />Toluene <br />199 <br />050 <br />200 ND 99 5 70-130 <br />633 <br />20 <br />Eftitmazene <br />200 <br />050 <br />200 ND 100 70.130 <br />630 <br />20 <br />xykm (tom) <br />579 <br />050 <br />600 ND %3 70.130 <br />685 <br />20 <br />Swrogate gga-Tnfhtororoluene <br />271 <br />300 9a7 70-130 <br />Sequoia Analytical - Walnut Creels The results rn this report apply to the samples ana4zed in accordmeee with the <br />custody documem This analytical report must be reproduced in its <br />Page 13 of 25 <br />