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' 819 Striker Avenue Suite 8 <br /> Sacramento CA 95834 <br /> 1 Sequoia (916)921-9600 <br /> FAX(916)92 1-0100 <br /> 4,,,f Analytical www sequoialabs corn <br /> lemfelder- Stockton Project N/A Sampled 616!00 <br /> 825 East Myrtle Street Project Number 20-1417-16 E02 Received 6/13100 <br /> I2T"tockton, <br /> CA 95205 Project Manager Doug Heard Reported 6/26100 <br /> BTEX by DHS LUFTIQuality Control <br /> Sequoia Analytical- Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Resuit Result Units Recov Limits % Limit % Notes* <br /> Watch 0060213 Date Prepared 6121100 Extraction Method EPA 5030B(MeOH) <br /> Wank 0060213-B LK1 <br /> Benzene 6121100 ND ug/l 0 500 <br />�oluene ND 0 500 <br /> thylbenzene " ND 0 500 <br /> ylenes(total) ND 0 500 <br /> Surrogate a,a a-Trrfluorotoluene 10 0 113 600-140 113 <br /> CS 0060213-BSI <br /> Benzene 6121100 100 110 ug/l 700-130 110 <br /> FT <br /> oluene 100 10 9 700-130 109 <br /> thylbenzene 100 113 700-130 113 <br /> Xylenes(total) 300 336 700-130 112 <br /> Surrogate a a a-Trifluorotoluene 10 0 II 1 60 0-140 111 <br /> ix S We 0060213-MSI 5006198-02 <br /> Benzene 6121100 too ND 1 14 ug/l 60 0-140 114 <br /> 100 ND 1 t 4 600-140 114 <br />,Toluene <br /> Ethylbenzene 100 ND 118 600-140 118 <br /> Xylenes(total) 300 ND 35 2 600-140 117 <br /> Surrogate a a a-Trrfluorotoluene 100 120 600-140 120 <br /> Matrix Spike Dup 0060213-MSD1 5006198-02 <br /> Benzene 6121100 100 ND 11 6 ug/l 600-140 116 250 174 <br /> Toluene 10 0 ND 114 600-140 114 25 0 0 <br /> 1 Ethylbenzene 100 ND 119 600-140 119 250 0 844 <br /> Xylenes(total) 300 ND 356 600-140 119 250 169 <br /> Surrogate a a a-Trifluorotoluene 100 121 600-140 121 <br /> i <br /> 1 <br /> 1 <br /> Pqola Analytical-Sacramento *Refer to end of report for text of notes and definitions <br />' Page 5 of 6 <br />