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f <br /> 1551 Industrial Road <br /> Sequoia <br /> San Carlos,CA 9,4070-4111 <br /> N-0 Analytical (650) 232-9600 <br /> FAX(650) 232-9612 <br />• <br /> Sequoia-Morgan Hill. Project: 1 Sampled: 7/29/99 <br /> 885 Jarvis Drive Project Number: 9070179(ATC Assoc.) Received: 8/2/99 <br /> Morgan Hill,CA 95037 Project Manager: Kayvan Kim ai R orted: 8/5/99 14:04 <br /> Volatile Organic Oxygenated Compounds by EPA Method 8260A/Quality Control <br /> Sequoia Analytical-San Carlos <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes* <br /> Batch: 9080018 Date Prepared: 8/4/99 Extraction Method: EPA 5030B IP/Tl <br /> Blank 9080018-BLKI ^ <br /> Ethanol 8/4/99 ND ug/1 1000 <br /> Tert-butyl alcohol ND 200 <br /> Methyl tert-butyl ether ND 2.00 <br /> Di-isopropyl ether ND 2.00 <br /> Ethyl tert-butyl ether ND 2.00 <br /> Tert-amyl methyl ether ND 2.00 <br /> Surrogate: 1,2-Dichloroethane-d4 50.0 41.5 76.0-114 83.0 <br /> LCS 9080018-BSI <br /> Methyl tert-butyl ether 8/4/99 50.0 54.3 ug/1 70.0-130 109 <br /> Surrogate: 1,2-Dichloroethane-d4 50.0 52.4 rt76.0-114 105 <br /> AIIWtrix S ike 9080018-MS1 L908003-02 <br /> thyl tert-butyl ether 8/4/99 50.0 ND 48.4 ug/l 60.0-140 96.8 <br /> Surrogate: 1,2-Dichloroethane-d4 1150.0 49.3 76.0-114 98.6 <br /> Matrix Spike Dun 9080018-MSDI L908003-02 <br /> Methyl tert-butyl ether 8/4/99 50.0 ND 47.3 ug/I 60.0-140 94.6 25.0 2.30 <br /> Surrogate: 1,2-Dichloroethane-d4 50.0 51.4 76.0-114 103 <br /> equoia Analytical- San Carlos *Refer to end of report for text of notes and definitions. <br /> Page 3 of 4 <br />