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885 <br /> arvis Drive <br /> Sequoia Morganll)CA 9 037 <br /> (408) 776-9600 <br /> Analytical FAX(408) 782-6308 <br /> 0 <br /> Blaine Tech Services(Chev) Project Chevron 9-8264(3775 Tracy Blvd,Tracy) Sampled 2/2100 <br /> 1680 Rogers Avenue Project Number 000202-U3 Received 2/4/00 <br /> San Jose CA 95I 12 Project Manager Scott Boor Reported 2/18/00 18 42 <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 Recox Limits % Limit % Notes* <br /> Batch 0020031 Date Prepared 218100 Extraction Method EPA 5030B IP/TI <br /> Blank 0020031-BLK l <br /> Ethanol 2/8100 ND ug/l 1000 <br /> Tert-butyl alcohol ND 200 <br /> Methyl tent-butyl ether ND 200 <br /> Di-isopropyl ether ND 200 <br /> Ethyl tert-butyl ether ND 200 <br /> Teri-amyl methyl ether ND 200 _ <br /> Surrogate 1,2-Dichloroethane-d4 500 463 760-114 926 <br /> Blank 0020031-BLK2 <br /> Ethanol 218100 ND ug/l 1000 <br /> Ter -butyl alcohol ND 200 <br /> Methyl tert-butyl ether ND 200 <br />. Di-isopropvl ether ND 200 <br /> Ethyl tert-butyl ether ND 200 <br /> Tert-amyl methyl ether_ ND 200 <br /> Surrogate 1 2-Dichloroethane-d4 -------- 500 ---- 48 0 -"— - - 760-114 960--�— - - -- <br /> LCS 0020031-BSI <br /> Methyl tert-butyl ether2/8/00 500 439 _ ug/l 700-130 878 <br /> Surrogate 12-Drchloroethane-d4 11500 452 J�- 760-114 904 <br /> LCS 0020031-BS2 <br /> Methyl tert-butyl ether 218100 500 43 6 ug/l _ 700-130 872 <br /> Surrogate 12-Dechlo)oethane-d4 " .500 464 760-114 92 8 - <br /> Matrix Spike 0020031-MS1 L002049-09 <br /> Methyl tert-butyl ether 2/8100 50 0 ND_ _ 39 1 ug/i _ 600-140 78 2 _ <br /> Surrogate 12-Dichloroethane-d4 11 500 454 760-114 908 — <br /> Matrix Spike Dup 0020031-MSDI L002049-09 <br /> Methyl tert-butyl ether — 218/00 50 0 ND 392 ugll_ 600-140 784 250 0 255 <br /> Surrogate 1 2-Dichloroethane-d4 500 454 760-114 908 <br /> Sequoia Analytical -Morgan Hill *Refer to end of report for text of notes and definitions <br /> Page 21 of 22 <br />