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Sequoia 680 Chesapeake Drive Redwood City, 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 /> 1 819 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 /> 1551 Industrial Road San Carlos,CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> ®rG� <br /> ATC Associates,Inc. Project: ATC Projects Sampled: 3/17/99 <br /> �I 1117 lone palm Ave.,Suite B Project Number: Stockton Fire Station#3 62574.0005 Received: 3/17/99 <br /> Modesto,CA 95351 Project Manager: Jeanne Homsey Reported: 3/31/99 <br /> /TotaLPuleal>fle ydrocarbivIIs{CG-C12) $TEX� nd�ITBEb D <br /> y US''�,1�7TT/= pati CoritroI` . _> <br /> WIT 1111i,M .a ::.., ...s a ya ti\\y\ SCfII�1la AIIilIf1C$ZAII 'drIQ3. s.,.. _„15 ,,. x,�" ,. \\ �\,. 3 <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes* <br /> E <br /> LLCS 9030083-BSI <br /> Benzene 3/19/99 10.0 9.83 ug/l 70.0-130 98.3 <br /> Toluene 10.0 10.0 " 70.0-130 100 <br /> Ethylbenzene 10.0 10.4 70.0-130 104 <br /> Xylenes(total) 30.0 31.1 70.0-130 104 <br /> bo"Surrogate: a,a,a-Tris luorotoluene 10.0 9.11 " 70.0-130 91.1 <br /> LMatrix Spike 9030083-MSI <br /> Benzene 3/19/99 10.0 7.22 18.1 ug/1 60.0-140 109 <br /> Toluene " 10.0 ND 10.1 " 60.0-140 101 <br /> Ethylbenzene " 10.0 ND 11.6 to 60.0-140 116 <br /> r Xylenes(total) " 30.0 18.2 54.5 1160A-140 121 <br /> Surrogate: a,a,a-Tris luorotoluene 10.0 12.6 IF <br /> 70.0-130 126 <br /> *''*rix Spike Dup 9030083-MSD1 <br /> ene 3/19/99 10.0 7.22 17.8 ug/1 '60.0-140 106 25.0 2.79 <br /> Te <br /> en10.0 ND 9.86 60.0-140 98.6 25.0 2.40 <br /> Ethylbenzene 10.0 ND 11.4 ". 60.0-140 114 25.0 1.74 <br /> Xylenes(total) " 30.0 18.2 53.6 " '60,0-140 118 25.0 2.51 <br /> Surrogate: a,a,a-Trifiuorotoluene 10.0 11.8 70.0-130 118 <br /> LBatch: 9030115 Date Prepared: 3/22/99 Extraction Method: EPA 5030B 1P/11 <br /> oBlank 9030115-BLKI <br /> i Purgeable Hydrocarbons as Gasoline 3/22/99 ND ug/1 50.0 <br /> Benzene to ND 11 0.500 <br /> i Toluene ND 0.500 <br /> LEthylbenzene ND 0.500 <br /> Xylenes(total) ND 0.500 . <br /> :Methyl tert-butyl ether ND 5.00 <br /> + Surrogate: a,a,a-Trifluorotoluene if 10.0 9.90 70.0-130 99.0 <br /> I! <br /> LCS 9030115-BS1 <br /> Benzene 3/22/99 10.0 9.39 ug/l 70.0-130 93.9 <br /> Toluene " 10.0 9.53 " 70.0-130 95.3 <br /> Ethylbenzene to 10.0 .9.63 70.0-130 96.3 <br /> Xylenes(total) " 30.0 28.6 " 70.0-130 . 95.3 <br /> r Surrogate: a,a,a-Trifluorotoluene 10.0 10.7 " 70.0-130 107 <br /> Matrix Spike 9030115-MSI L903162-01 <br /> LBenzene 3/22/99 10.0 14.9 24.9 ug/1 60.0-140 100 <br /> Toluene 1110.0 ND 9.21 60.0-140 92.1 <br /> Ffkvlbenzene 10.0 0.885 10.1 " 60.0-140 92.2 <br /> uoia Analytical-San Carlos *Refer to end of report for text of notes and definitions. <br /> , L <br /> Page 6 of 10 <br /> f <br />