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819 Striker Avenue,Suite 8 <br /> Sequoia * a ? 5acramen16,CA)9 922 1-99600wo 9 <br /> {91b . <br /> FAX(916)921-0100 <br /> -Analytical vwvw.sequoialabs.com <br /> IT Corporatiori-Sacramentb Project. Parkinson's ARCO,Stockton <br /> 1433 N.Market Blvd.,Ste. 1 . Project Number: 880-040.1A/01050000 Reported: <br /> Sacramento CA.,95834 Project Manager: Kathleen Waldo 02/03/01 11:29 <br /> — - Volatile'Oxygenate Compounds by EPA Method k60A .• m f ' <br /> Sequoia Analytical- Sacramento , <br /> Reporting— <br /> An <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-1(S101312-01)Water.. Sampled:01/19/0113:10 Received:01/.19/0114:30 <br /> Tert-butyl alcohol 3910 - 200 ug/l^ 1 1010181'' '01122/01 -01122101 EPA 8260A A-01 <br /> Di4sopropyl ether ND 2.00 A" " <br /> Ethyl tent-butyl ether 2.60 2.00 <br /> Tert-amyl methyl ether 215 2.00ot <br /> " <br /> Surrogate: 1,2-DCA-d4 89.8% 60-140 <br /> MW-1(S101312-01RE1)Water Sampled: 01/19/0113:10 Received:01/19/01 14:30 <br /> Methyl tert-butyl ether 34200 500 r :ug/1 250 1010217 t 41/23/01 '01/23/01 EPA'8260A <br /> Surrogate: 1,2-DCA-d4 x 96.6% 60-140 <br /> MW-2(S101312-02)Water Sampled:01/19/0112:15 Received:01/19/01 14:30 <br /> Tert-butyl alcohol 2520 200 . ug/1 1 1010181 41/22/01 01/22/01 EPA 8260A A-01 <br /> Di-isopropyl ether ND 2.00 <br /> Ethyl.tert-butyl ether ND 2.00 <br /> Tert-amyl methyl ether 168 2,00 i <br /> Surrogate: 1,2-DCA-d4 88.0% 60-140 .- <br /> MW-2(5101312-02RE1)Water Sampled:01/1910112:15 Received:01/19/01 14:30 ` <br /> Methyl tert-butyl ether 21600 500 ug/l _ 250 1010217 01/23/01 01/23/01 EPA 8260A <br /> Surrogate: 1,2-DCA-d4; 98.6% 60-140 i <br /> MW-3(Si01312-03)Water. Sampled:01/19/01 12:45 Received:01/19/01 14:30 - <br /> Tert-butyl alcohol ND 200 ug/1 1 1010181 01/22/01 01/22/01 EPA 8260A <br /> Di-isopropyl ether ND 2.00 i <br /> Ethyl tert-butyl ether ND 2.00 " <br /> Tert-amyl methyl ether 4.43 2.00 " <br /> Surrogate: 1,2-DCA-d4 93.2% 60-140 <br /> j <br /> I <br /> i <br /> Sequoia Analytical-Sacramento -< - The results in this report apply id the samples analyzed in accordance with the chain of <br /> custody document. This analytical report must he reproduced in its entirety. <br /> r Page 3 of 9 <br />