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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 /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd.North,Ste.D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> I� <br /> Kleinfelder-Stockton Project: N/A Sampled- 12/7198 <br /> 2825 East Myrtle Street Project Number: 20-1108-24.E01 Received: 12/8/98 <br /> Stockton,CA 95205 Project Manager: Tony Martin Reported: 12/28/98, 116199 <br /> BTEX by DHS LUFT/Quality Control <br /> Sequoia Analytical-Sacramento <br /> i4 <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov. Limits % Limit % Notes* <br /> Batch: 812Q143 Prepared: 12/10/98 Extractoon Method: P <br /> Blank 8120143-BLK1- <br /> Benzene 12/10/98 ND ug/1 0.500 <br /> 'Toluene ND 0.500 <br /> Ethylbenzenc ND 0.500 <br /> Xylenes(total) ND 0.500 <br /> Surrogate: a,a,a-Tris luorotoluene 10.0 9.56 60.0-140 95.6 <br /> $120143-1351 <br /> Benzene 12/10/98 10.0 10.6 ug/I 70.0-130 106 <br /> Toluene 10.0 9.92 70.0-130 99.2 <br /> Ethylbenzene 10.0 9.67 70.0-130 96.7 <br /> Xylenes(total) 30.0 29.2 70.0-130 97.3 <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 9.32 60.0-140 93.1 <br /> i <br /> t 8120143-MSL 5812069 J S <br /> Benzene 12/10/98 10.0 ND 10.6 ug/1 60.0-140 106 <br /> Toluene 10.0 ND 9.89 60.0-140 98.9 <br /> Ethylbenzene 10.0 ND 9.77 60.0-140 97.7 <br /> Xylenes(total) 30.0 ND 29.2 60.0-140 97.3 <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 9.01 60.0-140 90.1 <br /> Matrix Spike Dup 8120143-M5D1 5812069-15 <br /> Benzene 12/10/98 10.0 ND 10.4 ug/l 60.0-140 104 .25.0 1.90 <br /> Toluene 10.0 ND 9.72 60.0-140 97.2 25.0 1.73 <br /> Ethylbenzene 10.0 ND 9.44 60.0-140 94.4 25.0 3.44 <br /> Xylenes(total) 30.0 ND 28.7 60.0-140 95.7 25.0 1.66 <br /> Surrogate: a,a,"a-Trifluorotoluene 10.0 8.82 60.0-140 88.1 <br /> * definitions. <br /> Refer to end of report for text of Motes aful <br /> Sequoia Analytical-Sacramento <br /> Page 7 of 8 <br /> Linda C. Schneider,Laboratory Director <br />