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j L680 Chesapeake Drive Redwood Clty,,CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834- (916)921-9600 FAX(916)921-0100 <br /> L1455 McDowell Blvd.North,Ste.D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> ;I 1551 Industrial Road San Carlos,CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> i L ATC Associates,Inc. Project: ATC Projects Sampled: 3/17/99 <br /> 1117 lone palm Ave.,Suite B Project Number: Stockton Fire Station#3 62574.0005 Received: 3/17/99 <br /> LM <br /> odesto,CA 95351 Project Manager: Jeanne Homsey Reported: 3/31/99 <br /> . s y� <br /> Total'Purgeable Hydrocarbons(C6=C12),BTEX and MTBE byDHS Li7FT/QuaI�ty Control <br /> Analytical San Carlos <br /> .._.. <br /> w <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> HAnalyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes* <br /> Batch: 9030078 Date Prepared: 3/22/99 Extraction Method: EPA 5030B (P/T1 <br /> Blank 9030078-BLKI <br /> Purgeable Hydrocarbons as Gasoline 3/22/99 ND ug/l 50.0 <br /> j' Benzene ND " 0.500 <br /> , <br /> Toluene ND 0.500 <br /> 44L Ethylbenzene ND to 0.500 <br /> i Xylenes(total) " ND " 0.500 <br /> Lte_lhyly-bu <br /> tylether ND 5,00gaa,a,a-Trifluorotoluene 10.0 7.99 ". 70.0-130 79.9 <br /> r: <br /> LCS 9030078-BSI <br /> s <br /> L <br /> Benzene 3/22/99 10.0 9.78 ug/I 70.0-130 97.8 <br /> Toluene 1110.0 9.97 " 70.0-130 99.7' <br /> Ethylbenzene 10.0 10.5 " 70.0-130 105 <br /> -nes(total) 30.0 30.9 " 70.0-130 103 <br />,1 ��ogate: a,a,a-Trifluorotoluene 10.0 9.97 " 70.0-130 99.7 <br /> Matrix Spike 9030078-MSI L903163-01 <br /> Benzene 3/22/99 10.0 53.9 74.4 ug/1 . 60.0-140 NR 1 <br /> Toluene 10.0 28.6 45.1 60.0-140 165 <br /> f Ethylbenzene 10.0 20.5 35.2 " 60.0-140 147 <br /> i Xylenes(total) 30.0 56.1 93.1 60.0-140 123 <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 10.1 " 70.0-130 101 <br /> Matrix Spike Duo 9030078-MSD1 L903163-01 <br /> LBenzene 3/22/99 10.0 53.9 70.9 ug/1 60.0-140 170 25.0 18.7 2 <br /> Toluene " 10.0 28.6 43.7 of 60.0-140 151 25.0 . 8.86 <br /> Ethylbenzene to 10.0 20.5 34.0 to 60.0-140 135 25.0 8.51 <br /> Xylenes(total) 30.0 56.1 91.5 " 60.0-140 118 25.0 4.15 <br /> LSurrogate: a,a,a-Tris luorotoluene _ 10.0 10.0 " 70.0-130 100 <br /> Batch: 9030083 Date Prepared: 3/19/99 Extraction Method: EPA 5030B [P/Tl <br /> CBlank 9030083-BLK1 <br /> Purgeable Hydrocarbons as Gasoline 3/19/99 ND ug/1 50.0 <br /> Benzene ND " 0.500- <br /> Toluene <br /> .500,Toluene ND " 0.500 <br /> Ethylbenzene " ND " 0.500 <br /> Xylenes(total) ND " 0.500 <br /> Methyl tert-butyl ether ND 5.00 <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 7.27 " 70.0-130 72.7 <br /> 1 <br /> I. uoia Analytical-San Carlos *Refer to end of report for text of notes and definitions. <br /> L <br /> i <br /> C Page 5 of 10 <br />