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Sequoia 1551 industrial Road <br /> San Carlos CA 94070-4111 <br /> (650) 232-9600 <br /> Analytical <br /> FAX(650) 232-9612 <br /> s <br /> Sequoia-Morgan Hill Project 1 Sampled 7/29/99 <br /> 885 Jarvis Drive Project Number 9070178(ATC Assoc} Received 812199 <br /> Morgan Hill,CA 95037 Project Manager Kayvan Kimyai Reported 815199 14 01 <br /> Volatile Organic Oxygenated Compounds by EPA Method 8260A/Quahty 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 5030E FP/'Tl <br /> Blank 9080018-BLK1 <br /> Ethanol 8/4/99 ND ug/1 1000 <br /> Tert-butyl alcohol ND 200 <br /> Methyl tert-butyl ether ND 200 <br /> Di-isopropyl ether ND 200 <br /> Ethyl tert-butyl ether ND " 200 <br /> Tert-amyi methyl ether ND 200 <br /> Surrogate 1,2-Dichloroethane-d4 500 415 760-114 830 <br /> LCS 9080018-BS1 <br /> Methyl tert-butyl ether 8/4/99 500 543 ug/l 700-130 109 <br /> Surrogate 1,2-Dichloroethane-d4 01 500 524 If 760-114 105 <br /> *rix S tike 9080018-MSI L908003-02 <br /> yl tert-butyl ether 8/4/99 500 ND 484 ug/l 600-140 968 <br /> Surrogate 1,2-Dichloroethane-d4 H 500 493 of 760-114 986 <br /> Matrix Spike Du p 9080018-MSD1 L908003-02 <br /> Methyl tert-butyl ether 8/4/99 500 ND 473 ug/l 600-140 946 250 230 <br /> Surrogate 1 2-Dichloroethane-d4 it Soo SI 4 760-114 103 <br /> SFIjUoia Analytical-San Carlos *Refer to end of report for test of notes and definitions <br /> Page 3 of 4 <br />