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Sequoia 1551 Industrial Road <br /> San Carlos CA 94070-4111 <br /> Analytical (650) 232-96 <br /> FAX(650) 232-961212 <br /> 00 <br /> Sequoia-Morgan Hill Project 1 Sampled 7/22/99 <br /> 885 Jarvis Drive Project Number 9070023(ATC Assoc) Received 7/29/99 <br /> Morgan Hill, CA 95037 Project Manager Kayvan Kimyai Reported 8/5/99 13 22 <br /> - Volatte©rganxr Oxygen ate�'Coinpaun'66y EPA Method 8260A/Qualt( C6ntro1- - <br /> Sequa>€a Analytical-San,Carlos , <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Luruts % Limit % Notes* <br /> Batch 9070136 Date Prepared 7/28/99 Extraction Method EPA 5_030B [P/T1 <br /> Blank 9070136-BLK1 <br /> Ethanol 7/29/99 ND mg/kg 500 <br /> Tert-butyl alcohol 11 ND 100 <br /> Methyl tent-butyl ether ND 0 100 <br /> Di-isopropyl ether ND 0 100 <br /> Ethyl tert-butyl ether ND 0100 <br /> Tert-amyl methyl ether ND 0100 <br /> Surrogate 1 2-Dcchloroethane-d4 250 228 700-121 911 <br /> Blank 9070136-BLK2 <br /> Ethanol 7/30/99 ND mg/kg 500 <br /> Tert-butyl alcohol ND It 100 <br /> Methyl tert-butyl ether ND It 0 100 <br /> 2jgsopropyl ether ND 0100 <br /> tert-butyl ether " ND " 0 100 <br /> amyl methyl ether ND " 0100 <br /> Surrogate 12-Dichloroethane-d4 250 230 700-121 920 <br /> Blank 9070136-BLK3 <br /> Ethanol 8/3/99 ND mg/kg 500 <br /> Tert-butyl alcohol ND " 100 <br /> Methyl tent-butyl ether ND it 0100 <br /> Di-isopropyl ether ND 0100 <br /> Ethyl tert-butyl ether ND 0100 <br /> Tert-amyl methyl ether ND 0 100 <br /> Surrogate 1,2-Dcchloroethane-d4 250 286 700-121 114 <br /> LCS 9070136-BSI <br /> Methyl tert-butyl ether 7/29/99 250 209 mg/kg 700-130 83 6 <br /> Surrogate 12-Dichloroethane-d4 rr 250 240 700-121 960 <br /> LCS 9070136-BS2 <br /> Methyl tert-butyl ether 7/30/99 250 205 mglkg 700-130 820 <br /> Surrogate 1,2-Dcchloroethane-d4 11 150 238 700-121 952 <br /> LCS 9070136-BS3 <br /> Methyl tert-butyl ether 8/4/99 250 2 71 mg/kg 700-130 108 <br /> Surrogate 1,2-Dcchloroethane-d4 250 283 700-121 113 <br /> Matrix Spike 9070136-MSI L907260-21 <br /> Methyl tent-butyl ether 7/29/99 250 ND 206 mg/kg 600-140 82 4 <br /> -qwla Analytical-San Carlos "Refer to end of report for text of notes and definitzons <br /> Page 17 of 20 <br />