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i <br /> 404 N Wlget Lane <br /> Walnut Geek CA 94598 <br /> Sequoia (925)988-9600 <br /> FAX(925)988-%73 <br /> Analytical www seauola,abs` rn <br /> Gettler Ryan,Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite 7 Project Number Chevron#9-8632 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 21-Nov-00 17 46 <br /> TVPH/BTEX/M/N by 8015BGRO/8021B -Quality Control <br /> Aspen Analytical <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch AK01004-EPA 5030B <br /> Blank(AK01004-BLKI) Prepared&Analyzed 10-Nov-00 <br /> Benzene ND 0 500 UFA <br /> Toluene ND 0 500 " <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 150 <br /> Methyl tert-butyl ether ND 250 " <br /> Surrogate AiXa-Tnfluointolueire 203 200 101 48-116 <br /> LCS(AK01004-BS1) Prepared&Analyzed 10-Nov-00 <br /> Benzene 208 0 500 ug/l 200 104 74.112 <br /> Toluene 212 9500 200 106 76-112 <br /> Ethylbenzene 203 0 500 " 200 101 81-118 <br /> Xylenes(total) 230 150 200 115 75-I24 <br /> tort-butyl ether 21 0 2 50 20 0 105 55-162 <br /> 5r <br /> Surrogate aga-Trifluorotoluene 207 200 104 48-126 <br /> Matrix Spike(AK01004-MS1) Source A011056-01 Prepared&Analyzed 10-Nov-00 <br /> Benzene 197 0 500 ugA 200 ND 985 57-123 <br /> Toluene 198 0 500 200 ND 990 63-115 <br /> Ethylbenzene 194 0 500 200 ND 970 64117 <br /> Xylenes(total) 230 1 50 200 ND 115 55-132 <br /> Methyl tert-butyl ether 200 250 200 ND 100 21-169 <br /> Surrogate a%a;a-Trif uororohwne 184 200 920 48-116 <br /> Matra Spike Dup(AK01004-MSDI) Source A011056-01 Prepared&Analyzed 10-Nov-00 <br /> Benzene 184 0 500 ug(l 200 ND 920 57-123 682 31 <br /> Toluene 195 0 500 " 20 0 ND 975 63-115 153 26 <br /> Ethylbenzene 187 0 500 20 0 ND 935 64117 367 26 <br /> Xylenes(total) 215 150 200 ND 108 55-132 674 31 <br /> Methyl tort-butyl ether 220 2 50 200 ND 110 21-169 952 54 <br /> Srimogate AAO-Tsifhiorotolaeme 190 200 950 48-126 <br /> S la Analytical-walnut Creek The rrsuks in this repari apply to the samples avraJ,zed in occmAwce with the chain of <br /> custody document.This artdAcai report must be reproduced in its entirety <br /> Page 8 of 9 <br />