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Sequoia los lnduRoad <br /> San Carlos CA 94070-4111 <br /> (650) 232-9600 <br /> Analytical <br /> FAX(650) 232-9612 <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 /> "77 Volatde°Oiganic Ozygeuated°Compounds by,EPXMettiad 8260k iii1ity,Contr4ol­ — <br /> _°. Segx!Oia AIISlytlCal-San-Car lQS <br /> Date Spike Sample QC Reporting Linut Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Matrix Spike(continued) 9070136-MSI L907260-21 <br /> Surrogate 1,2-Dichloroethane-d4 7/29199 250 219 mg/kg 700-121 876 <br /> Matrix Slyke Dup 9070136-MSD/ L907260-21 <br /> Methyl tert-butyl ether. 7/29/99 250 ND 209 mg/kg 60 0-140 836 250 145 <br /> Surrogate 1 2-Dtchloroethane-d4 250 225 700-121 900 <br /> Batch 9070149 Date Prepared 7.13019_9 Extraction Method EPA 5030B 1P/Tl <br /> Blank 9070149-BLKI <br /> Ethanol 7/30/99 ND ug/1 1000 <br /> Tert-butyl alcohol 11ND 200 <br /> Methyl tert-butyl ether ItND 200 <br /> Di-isopropyl ether ND 200 <br /> Ethyl tert-butyl ether ND 200 <br /> Tat-amyl methyl ether ND 200 <br /> gate 1 2-Dichloroethane-d4 500 529 760-114 106 <br /> Blank 9070149-BLK2 <br /> Ethanol 8/2/99 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 200 <br /> Tert-amyl methyl ether ND 200 <br /> Surrogate 12-D¢chloroethane-d4 500 557 760-114 111 <br /> LCS 9070149-BSI <br /> Methyl tett-butyl ether 7130/99 500 520 ug/l 700-130 104 <br /> Surrogate 12-D:chloroethane-d4 11500 51 7 760-114 103 <br /> LCS 9070149-BS2 <br /> Methyl tert-butyl ether 812199 500 572 ug/l 700-130 114 <br /> Surrogate 1 2-Dichloroethane-d4 11500 553 or 760-114 111 <br /> Matrix Spike 9070149-MSI L907289-07 <br /> Methyl tert-butyl ether 7/30/99 500 ND 529 ug/l 600-140 106 <br /> Surrogate 1,2-Dichloroethane-d4 It <br /> 500 531 it760-114 106 <br /> Matnx Spike Due 9070149-MSDI L907289-07 <br /> Methyl tert-butyl ether 7/30/99 Soo ND 48 1 ug/l 600-140 962 250 969 <br /> Surrogate 12-Dtchloroethane-d4 It 500 536 760-114 107 <br /> Am <br /> ora Analytical-San Carlos *Refer to end of report for tact of notes and definitions <br /> Page 18 of 20 <br />