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r <br /> 404 N Wiget Lane <br /> Sequoia <br /> Walnut 94598 <br /> (925)988-9G0096M <br /> FAX(925)988-9673 <br /> Analytical www sequolaWn com <br /> Gettler Ryan,Inc -Dublin Project Chevron <br /> 6747 Sierra Court Slate J Pro]ectNumber Chevron# 9-3232 Reported <br /> Dublin CA,94568 Project Matlager Deanna L Harding 16-Jan-01 18 13 <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 Lurnt Umts Level Result %REC Lmuts RPD Lnnut Notes <br /> Batch lA03002-EPA 5030B [PIT] <br /> Blank(1A03002-BLKI) Prepared&Analyzed 03-Jan-01 S-03 <br /> Purgeable Hydrocarbons ND 50 ug/I <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 " <br /> Methyl tw-butyl ether ND 25 " <br /> Surrogate q q a-Tri luorotoluene 401 300 134 70-130 <br /> LCS(1A03002-BSl) Prepared&Analyzed 03-Jan-01 <br /> Benzene 178 050 119/1 200 890 70-130 <br /> Toluene 179 050 200 895 70-130 <br /> Ethylbenzene 177 050 200 885 70430 <br /> Xylenes(total) 531 050 600 885 70-130 <br /> Surrogate qqa-Trifluorotoluem 277 300 923 70.130 <br /> Matrix Spike(1A03002-MS 1) Source W012642-02 Prepared 03-Jan-01 Analyzed 04-Jan-01 <br /> Benzene 178 050 ug/i 200 ND 890 70-130 <br /> Toluene 178 050 200 ND 890 70-130 <br /> Ethylbenzene 172 050 200 ND 860 70-130 <br /> Xylenes(total) 499 050 600 ND 815 70-130 <br /> Surravgare q Aa-Tris luorololuene 291 300 970 70=130 <br /> Matra Spike Dup(1A03002-MSD1) Source W012642-02 Prepared 03-Jan-01 Analyzed 04-Jan-01 <br /> Benzene 184 050 ugA 200 ND 920 70-130 331 20 <br /> Toluene 185 050 200 ND 925 70-130 396 20 <br /> Ethylbenzene 181 050 200 ND 905 70-130 510 20 <br /> Xylenes(total) 526 050 600 ND 877 70-130 729 20 <br /> Sumvgate 4 a,a-Trijluonotoluene 293 300 977 70.130 <br /> Sequoia Analytical-Walnut Creek The results in this report apply to the samples analysed m accordance with the chin <br /> custody document Tlns analytical report must be reprneheced in its enVIW <br /> Page 5 of 8 <br />