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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite B Sacramento 9 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 707 792-1865 FAX 707 791-0342 <br />.leinfelder-Stockton Project N/A Sampled 12/8/98 <br /> 825 East Myrtle Street Project Number 20-1108-24 E01 Received 1218198 <br /> tockton,CA 95205 Project Manager Tony Martin Reported 12123/98, 1/6/99 <br /> BTEX by DHS LU>N 1'/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> latch. 8120122 Date Prepared, 1219198 Extraction Method EPA 503011(INNOH) <br /> lallk 8120122-BLK1 <br /> tenzene 12/9/98 ND mg/kg 000500 <br /> oluene ND 000500 <br /> thylbenzene ND 000500 <br /> ylenes(total) ND 000500 <br /> urrogate aaa-Trtfuorotoluene 0200 0203 600-140 101 <br /> AU 8120122-BS1 <br /> tenzene 12/9/98 0200 0 238 mg/kg 700-130 119 <br /> oluene 0200 0 228 700-130 114 <br /> thylbenzene 0200 0 227 700-130 113 <br />.ylenes(total) 0 600 0 663 700-130 Ito <br /> urrogate a a a-Trifluorotoluene 0200 0 199 600-140 995 <br /> 8120122-MSI S812118-01 <br /> tenzene 12/9/98 0200 ND 0 178 mg/kg 600-140 89 0 <br /> oluene 0200 ND 0 173 600-140 865 <br /> thylbenzene 0200 ND 0 173 600-140 865 <br />.ylenes(total) 0 600 ND 0 527 600-140 878 <br /> urrogate a s a-Tizfuorotoluene 0200 0 199 600-140 995 <br /> latrix Spike un 8120122-MSD1 5812118-01 <br /> tenzene 12/9198 0200 ND 0 181 mg/kg 60 0-140 905 25 0 167 <br /> oluene 0200 ND 0 177 600-140 88 5 25 0 2 29 <br /> thylbenzene 0 200 ND 0 178 600-140 890 25 0 2 85 <br />.ylenes(total) 0 600 ND 0 535 600-140 892 25 0 1 58 <br /> urrogate a a,a-Triuorotoluene 0200 0 197 600-140 98 5 <br /> Latch. 8120144DggPrgl ed. 12/10/98 Extraction Method EPA 5030B(INIeOHI <br /> llwk 8120144-BLKI <br /> lenzene 12/10/98 ND mg/kg 000500 <br /> oluene NO 000500 <br /> thylbenzene ND 000500 <br />.ylenes(total) ND 000500 <br /> urrogate a a a-Trifluorotoluene 0200 0 190 600-140 950 <br /> LS 8120144-BSl <br /> lenzene 12/10/98 0200 0 228 mg/kg 700-130 114 <br /> oluene 0200 0 217 700-130 108 <br /> thylbenzene 0200 0 214 700-130 107 <br />:ylootaE} 0 600 0 634 700-130 106 <br /> equoia Analytical-Sacramento *Refer to end of report for tert of notes and definitions <br /> mda C Schneider, Laboratory Director Page l 1 of 14 <br /> `bX9 <br />