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, <br /> 680 Chesapeake Drive Redwood City,to 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia <br /> 404 N.Wiget Lane Walnut Creek.CA 94598 (925)988-%00 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834- (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd.North,Ste.D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> ' C 1551 Industrial Road San Carlos,CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> ATC Associates,Inc. Project: ATC Projects Sampled: 3/16/99 <br /> !i 1117 Lone Palm Ave.,Suite B Project Number: Stockton Fire Station No.3 Received: 3/17/99 <br /> Modesto,CA 95351 Project Manager: Jeanne Homse <br /> J g Y Reported 4/3/99 <br /> olrganicrJ <br /> a�(� gygenated Compounds hY EPACMithdd-82b0AC iA ControLa- . <br /> Zvi// s <br /> AM <br /> ;.,. .wG f Seuo>a<Anal tical San Carlos� . r 3% \ �iA <br /> .��� ... _ .� •. . ... Y.....� <br /> �a <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes* <br /> f <br /> i Batch: 9030057 Date Prepared: 3/16/99 Extraction Method: EPA 5030B 1P/Tl <br /> t Blank 9030057-BLK1 <br /> it Ethanol 3/16/99 ND mg/kg 150 <br /> CTert-butyl alcohol ND " 10.0 <br /> Methyl tert-butyl ether ND 0.100 <br /> Di-isopropyl ether ND " 0.100 <br /> Ethyl tert-butyl ether ND 0.100 <br />.i Tert-amyl methyl ether ND " 0.100 <br /> CSurrogate: 1,2-Dichloroethane-d4 2.50 2.93 70.0-121 117 <br /> Blank 9030057-BLK2 <br /> Ethanol 3/18/99 ND mg/kg 150 <br /> Tert-butyl alcohol ND i0.0 <br /> Methyl tert-butyl ether " ND " 0.100 <br /> f sopropyl ether ND " 0.100 <br /> ! l tert-butyl ether ND " 0.100 <br /> 9 Tert-amyl methyl ether ND " 0.100 <br /> rr1,2-Dichloroethane-d4 2.50 2.68 " 70.0-]21 107 <br /> Lsurogate: <br /> S 9030057-BSI <br /> Methyl tert-butyl ether 3/16/99 2.50 2.79 mg/kg 170.0-130 112 <br /> Surrogate: 1,2-Dichloroethane-d4 2.50 3.01 70.0-121 . 120 <br />{ <br /> LCS 9030057-BS2 <br /> Methyl tert-butyl ether 3/18/99 2.50 2.96 mg/kg 70A-130 118 <br /> Surrogate: 1,2-Dichloroethane-d4 2.50 3.02 70.0-121 121 <br /> Matrix Spike 9030057-MS1 L903113-05 <br /> Methyl tert-butyl ether 3/16/99 2.50 ND 2.40 mg/kg '60.0-140 96.0 <br /> Surrogate: 1,2-Dichloroethane-d4 If 2.50 2.59 " 70.0-121 104 <br /> Matrix Spike Dup 9030057-MSD1 L903113-05 <br /> r`Methyl tert-butyl ether 3/16/99' 2.50 ND 2.54 mg/kg 60.0-140 102 25.0 6.06 <br /> Surrogate: 1,2-Dichloroethane-d4 2.50 2.70 " 70.0-121 108 <br /> equoia Analytical-San Carlos *Refer to end of reportfor text of notes and definitions. <br /> E <br /> rm r <br /> F L Page 8 of 9 <br />