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Industrial <br /> ad <br /> Sequoia San Carl s5 CA 94070-.41 11 <br /> (650) 232-9600 <br /> Analytical FAX (650) 232-9612 <br /> the Tech Services Project Chevron(3) Sampled 611/99 <br /> 1680 Rogers Avenue Project Number Chevron 9-82641990601-Y1 Received 6/2199 <br /> San Jose,CA 95112 Project Manager Christine Lillie Reported <br /> 715194 <br /> 'fTotalPu rgeai�le hydrocarbons(C6-CT2);BTFX and PliTlSEsb D$S L13I`T+ _Iual ty'Control <br /> w -Sequoia Analytical-'San Carlos _ <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> lAnalyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Matrix Spike continued 9060081-MSI L906067-06 <br /> Ethylbenzene 6/14/99 100 ND 892 ug/l 600-140 89.2 <br /> Xylenes(total) 300 ND 27 1 " 600-140 90.3 <br /> Surrogate aa a-Trifluorotoluene 100 913 10700-130 913 <br /> Matrix Spike Du 9060081-MSD/ L906067-06 <br /> Benzene 6/1[4/99 100 ND 930 ug/1 600-140 93 0 25 0 174 <br /> Toluene 100 ND 9 17 600-140 91.7 250 0 547 <br /> Ethylbenzene 100 ND 9 06 600-140 906 25 0 156 <br /> Xylenes(total) 300 ND 275 600-140 917 25 0 154 <br /> Surrogate a,a,a-Trifluorotoluene 100 8 65 700-130 865 <br /> uoia Analytical- San Carlos *Refer to end of report for text of notes and definitions <br /> page 7 of 11 <br />