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Sequoia <br />Analytical <br />Gettler Rvan, Inc - 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 Wiget lane <br />Walnut Creek. CA 945% <br />ws) 968-9600 <br />FAX (975) 968-9673 <br />www sequolalabs.corn <br />Reported <br />24 -Jul -00 It 33 <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 />Analvte Result Limit Units Level Result %REC Limits RPD Litrut Notes <br />Batch OG10001 - EPA 5030B [PIT] <br />Blank (OGi0001-BLKI) Prepared & Analyzed 10 -Jul -00 <br />Purgeable Hvdrocarbons ND 50 ugA <br />Beraene ND 050 <br />Toluene ND 050 <br />Ethylbenzene ND 050 <br />Xylenes (total) ND 050 <br />Surrogate aaa-TrIluorotoluene <br />29 I 300 990 "0.130 <br />Analytical - <br />The <br />results to this report apply to the a_ples maged in accordmue with the churn of <br />custody document Thus analytical report must be reproduced to its erturety <br />r1i <br />Page 8 of 15 <br />Prepared & Analvzed 10 -Jul -00 <br />LCS (OG10OO1-BSI) <br />167 <br />050 ugll <br />200 935 70-130 <br />Benzene <br />182 <br />050 <br />200 910 70-130 <br />Toluene <br />2l 5 <br />050 <br />200 108 70-130 <br />!benzene <br />60 0 <br />0 50 <br />60 0 !00 70-130 <br />� (�) <br />lS 7 <br />30 0 85 7 "0.130 <br />Surrvgars asa-Tnfluorntoluene <br />Prepared & Analyzed 13 -Jul -00 <br />LCS (OG1000I-BS2) <br />160 <br />050 ug11 <br />200 80 0 70.130 <br />Benaene <br />175 <br />050 <br />200 975 70-130 <br />Toluene <br />160 <br />050 <br />200 800 70-130 <br />Ethylberucne <br />%7 <br />050 <br />600 978 70-130 <br />Xylenes (total) <br />5wrngate aaa-TrrJhaorowhune <br />270 <br />" <br />300 900 70-130 <br />Matrix Spike (OG10001-MSI) <br />Source W006676-19 <br />Prepared & Analyzed 10 -Jul -00 <br />172 <br />050 ug(I <br />200 ND 860 70-130 <br />Beene <br />195 <br />050 <br />200 ND 975 70-130 <br />Toluene <br />212 <br />050 <br />200 ND 111 70-130 <br />Ethylbenzene <br />631 <br />050 <br />600 ND 105 70-130 <br />Xylenes (total) <br />Surrogate aaa•Tnfluorntolusne <br />253 <br />30 0 843 1-0-130 <br />Analytical - <br />The <br />results to this report apply to the a_ples maged in accordmue with the churn of <br />custody document Thus analytical report must be reproduced to its erturety <br />r1i <br />Page 8 of 15 <br />