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Sequoia 404 N Lane <br /> Walnut GCA eek CA 945998 <br /> 4 ID (925)988-9600 <br /> FAX(925)988-9673 <br /> Analytical www sequolalabs corn <br /> Gettler Ryan,Inc -Dubhn Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron#9-8264 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 29-Dec-00 08 15 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lint Units Level Result %REC Limits RPD Limit Notes <br /> Batch OL14001 -EPA 5030B [PIT] <br /> Blank(OL14001-BLKI) Prepared&Analyzed 14-Dec-00 <br /> Purgeable Hydrocarbons ND 50 ug/1 <br /> Benzene ND 050 <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 25 " <br /> Surrogate a,ga-Tr7fluorotoluene 299 300 997 70-130 <br /> LCS(OL14001-BSI) Prepared&Analyzed 14-Dec-00 <br /> Benzene 191 050 ug/I 200 955 70-130 <br /> Toluene 196 050 200 98 0 70-130 <br /> W Ylbenzene <br /> 205 050 200 103 70-130 <br /> enes(total) 609 050 600 102 70-130 <br /> Surrogate a eta-Tnf luorotoluene 291 300 970 70-130 <br /> Matrix Spike(OL14001 AlSl) Source W012135-03 Prepared&Analyzed 14-Dec-00 <br /> Benzene 178 050 uga 200 ND 890 70-130 <br /> Toluene 187 050 200 ND 935 70-130 <br /> Ethylbenzene 19 5 050 200 ND 975 70-130 <br /> Xylenes(total) 396 050 600 ND 99 3 70-130 <br /> Surrogate a,Qa-Tnfluorotoluene 191 300 973 74130 <br /> Matrix Splice Dup (OL14001-MSD 1) Source W012135-03 Prepared&Analyzed 14-Dec-00 <br /> Benzene 182 050 ug/1 200 ND 910 70-130 222 20 <br /> Toluene 192 050 200 ND 960 70-130 264 20 <br /> Ethylbenzene 200 050 200 ND 100 70-130 253 20 <br /> Xylenes(total) 607 050 600 ND 101 70-130 1 83 20 <br /> Surrogate q a a-Tnfluorotoluene 308 300 103 70-130 <br /> Bola Analytical-Walnut Creek The results in this report apply to the samples analysed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 9 of 22 <br />