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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 /> 1551 Industrial Road San Carlos, CA 94070-4111 (650)232-4600 FAX(650)232-9612 <br /> �1 <br /> ATC Associates,Inc. Project: ATC Projects Sampled: 3/9/99 <br /> 1117 lone palm Ave.,Suite B Project Number: Glover Property Received: 3/10/99 <br /> Modesto,CA 95351 Project Manager: Jeanne Homsey Reported: 3/30/99 <br /> -I Volatile Organic Oxygenated Compounds by EPA Method 8260A/.Quality Control <br /> Sequoia Analytical-San Carlos <br /> I: <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes* <br /> 'Batch: 9030057 Date Prepared: 3/16/99 Extraction Method: EPA 5030B PIT <br /> -�Blank 9030057-BLK1 <br /> Ethanol 3/16/99 ND mg/kg 150 <br /> -;Tert-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 /> Tert-amyl methyl ether ND 0.100 <br /> Surrogate: 1,2-Dichloroethane-d4 2.50 2.93 70,0-121 117 <br /> Blank 9030057-BLK2 <br /> Phanol 3/18/99 ND mg/kg 150 <br /> Tert-butyl alcohol ND 10.0 <br /> Methyl tert-butyl ether ND 0.100 <br /> I ,Di-isopropyl ether ND 0.100 <br /> hyl tert-butyl ether ND 0300 <br /> ' .:rt-amyl methyl ether ND 0.100 <br /> Surrogate: 1,2-Dichloroethane-d4 2.50 2.68 70.0-121 107 <br /> Es}LCs 9030057-BS1 <br /> Methyl tert-butyl ether 3/16/99 2,50 2.79 mg/kg 70.0-130 112 <br /> iSurrogate: 1,2-Dichloroethane-d4 2.50 3.01 of 70.0-121 120 <br /> f <br /> -r.'LCS 9030057-BS2 <br /> Methyl tert-butyl ether 3/18/99 2.50 2.96 mg/kg 70.0-130 118 <br /> :--iSurrogate: 1,2-Dichloroethane-d4 ry2.50 3.02 Or <br /> 70.0-121 121 <br /> Matrix Spike 9030057-MSI 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 2.50 2.59 70.0-121 104 <br /> Matrix Spike Dup 9030057-MSD/ L903113-05 <br /> .!Methyl tert-butyl ether 3/16/99 2.50 ND 2,54 mg/kg 60.0-140 102 25.0 6.06 <br /> F Surrogate: 1,2-Dichloroethane-d4 2.50 2.70 70.0-121 108 <br /> r <br /> I <br /> i I <br /> quoia Analytical-San Carlos *Refer to end of report for text of notes and definitions. <br /> j Page 9 of 10 <br />