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Sequoia 1551 Industrial Road <br /> San Carlos CA 94070-4111 <br /> Analytical (601232-9600 <br /> FAX(6550) 232-961.2 <br /> Sequoia-Morgan Hill Project 1 Sampled 7/22/99 <br /> 885 Jarvis Dnve 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 /> f Volatde Organic Oxygenated Compounds by EPA Met�iad-8260A1Quattty Control ' <br /> Sequoia Analytical:.=S...an,Carlos <br /> -, .,.,.... ..-.. <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> 7Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Matrix Spike(continued) 9070136-MSI L907260-21 <br /> Surrogate 12-Dcchloroethane-d4 7129/99 250 219 mg/kg 700-121 876 <br />'Matrix Spike Dup 9070136-MSDI L907260-21 <br /> Methyl tert-butyl ether 7/29/99 250 ND 209 mg/kg 600-140 836 250 145 <br /> Surrogate 1,2-Dzchlorcethane-d4 250 225 0700-121 900 <br />'Batch 9070149 Date Prepared 7/30/99 _Extraction Method EPA 5030E [PITI <br /> Blank 9070149-BLKI <br /> Ethanol 7/30/99 ND ug/l 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 IF2 00 <br /> -amyl methyl ether ND IF <br /> 2.00 <br /> 1114Frrogate 12-Dchloroethane-d4 500 529 760-114 106 <br /> Blank 9070149-BLK2 <br /> Ethanol 8/2/99 ND ug/1 1000 <br /> Tert-butyl alcohol " ND IF <br /> 200 <br /> Methyl tert-butyl ether ND 11 2 00 <br />'Di-Isopropyl ether IF ND IF <br /> 200 <br /> Ethyl tert-butyl ether ND 200 <br /> Tert-amyl methyl ether ND 200 <br />'Surrogate 1,2-Dzchloroethane-d4 500 557 760-114 111 <br /> LCS 9070149-BSI <br /> Methyl tert-butyl ether 7/30/99 500 520 ug/1 700-130 104 <br /> Surrogate 12-Dichloroethane-d4 11500 517 760-114 103 <br /> LCS 9070149-BS2 <br /> Methyl tert-butyl ether 8/2/99 500 572 ug/1 700-130 114 <br />'Surrogate 12-Dichloroethane-d4 " Soo 553 760-114 111 <br /> Matrix Spike 9070149-MSI L907289-07 <br /> Methyl tert-butyl ether 7/30/99 500 ND 529 ug/1 600-140 106 <br /> Surrogate 1,2-Dichloroethane-d4 " 500 531 760-114 106 <br /> Matrix Spike Dug 90701.49-MSDI L907289-07 <br /> Methyl ten-butyl ether 7/30/99 500 ND 481 ug/l 600-140 962 250 969 <br /> Surrogate 1 2-Dzchloroethane-d4 500 536 760-114 107 <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and definitions <br /> Page 18 of 20 <br />