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1 Industrial <br /> Sequ®laSan Carlos CA 94070-41 1 1 <br /> 1 <br /> ti) ad <br /> (650) 232-9600 <br /> Analytical FAX(650) 232-9612 <br /> i <br /> Sequoia-Morgan Hill Project Blain.&CHEVRON Sampled 9120199 <br /> 885 Jarvis Drive Project Number M90969214344 Waterloo Rd, Stockton Received 9/21/99 <br /> Morgan Hill,CA 95037 Pro ect Manager Wendy Bonnes Reported 9130/99 <br /> VolatileOrganic Oxygenated Compounds by EPA Method 8260A/Qualtty 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 IN, Limit % Notes* <br /> Batch 9090119 Date Prepared 9124199 Extraction Method EPA 5030B IP/Tl <br /> Blank 9090119-BLKI <br /> Ethanol 9/24/99 ND ug/l 1000 <br /> Tert-butyl alcohol it ND " 200 <br /> Methyl tent-butyl ether ND 200 <br /> D3-isopropyl ether ND 200 <br /> Ethyl tert-butyl ether ND " 200 <br /> Tert-amyl methyl ether ND 200 <br /> Surrogate 1,2 Dichloroethane-d4 FYSoo 509 it 760-114 102 <br /> Blank 9090119-BLK2 <br /> Ethanol 9/27/99 ND 119/1 1000 <br /> Tert-butyl alcohol " ND 200 <br /> Methyl tent-butyl ether ND 200 <br /> -sopropyl ether ND 200 <br /> tert-butyl ether ND " 200 <br /> ,t-amyl methyl ether it ND 200 <br /> Surrogate 1,2-Dtchloroethane-d4 If 500 SOS 760-114 101 <br /> LCS 9090119-BSI <br /> Methyl tert-butyl ether 9124/99 500 486 ug/l 700-130 972 <br /> Surrogate 1,2-Dichloroethane-d4 h 500 548 It <br /> 760-114 J10 <br /> LCS 9090119-BS2 <br /> Methyl tent-butyl ether 9127/99 Soo 490 ug/1 700-130 980 <br /> Surrogate 12-Dtchloroethane-d4 it500 518 76 0-114 J04 <br /> Matrix Spike 9090119-MSI L909211-02 <br /> Methyl ten-butyl ether 9124/99 500 ND 465 ug/1 600-140 930 <br /> Surrogate 1,2-Dichloroethane-d4 " 500 486 760-114 972 <br /> Matnx Spike Maw 9090119-MSDI L909211-02 <br /> Methyl tert-butyl ether 9/24199 500 ND 466 ug/l 600-140 932 250 0 215 <br /> Surrogate 1,2-Dwhloroethane-d4 ff 500 480 " 760-114 960 <br /> Batch 9090124 Date Prepared 9/27/99 Extraction Method_EPA 5030B 1P/T1 <br /> Blank 9090124-BLKI <br /> Ethanol 9127/99 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 /> 'An <br /> oia Analytical-San Carlos *Refer to end of report far text of notes and definitions <br /> Page 5 of 7 <br />