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819 Striker Avenue,Suite 8 <br /> Sequoia Sacramento,CA <br /> 95834 <br /> (916)921-9600-9600 <br /> FAX(916)921-0100 <br /> Analytical www.sequoialabs.com <br /> IT Corporation-Sacramento Project: Parkinson's ARCO,Stockton <br /> 1433 N.Market Blvd., Ste. i Project Number: 880-040.]A/01050000 Reported: <br /> Sacramento CA,95834 Project Manager: Kathleen Waldo 02/03/01 11:29 <br /> Volatile Oxygenate Compounds by EPA Method 8260A- Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Motes <br /> Batch 1010181 -EPA 5030B [PIT <br /> Blank(1010181-BLKI) Prepared&Analyzed:01/22/01 <br /> Ten-butyl alcohol ND 200 ugll <br /> Methyl tert-butyl ether ND 2.00 " <br /> Di-isopropyl ether ND 2.00 " <br /> Ethyl tert-butyl ether ND 2.00 " <br /> Tert-amyl methyl ether ND 2.00 " <br /> Ethanol ND 3000 " <br /> Surrogate:1,2-DCA-d4 47.9 50.0 95.8 60-140 <br /> LCS(1010181-BSI) Prepared&Analyzed:01/22/01 <br /> Methyl tert-butyl ether 46.3 2.00 ug/l 50.0 92.6 60-140 <br /> Surrogate:1,2-DCA-d4 44.2 50.0 88.4 60-140 <br /> LCS Dup(1010181-BSD1) Prepared&Analyzed:01/22/01 <br /> Methyl tert-butyl ether 49.4 2.00 ugA 50.0 98.8 60-140 6.48 25 <br /> Surrogate.,1,2-DCA-d4 45.6 50.0 91.2 60-140 <br /> Matrix Spike(1010181-MS1) Source:5101247-05 Prepared&Analyzed:01/22/01 <br /> Methyl tert-butyl ether 52.2 2.00 ugll 50.0 ND 104 60-140 <br /> Surrogate:1,2-DCA-d4 49.2 " 50.0 98.4 60-140 <br /> Matrix Spike Dup(1010181-MSD1) Source:S101247-05 Prepared&Analyzed:01/22/01 <br /> Methyl tert-butyl ether 49.9 2.00 ug/l 50.0 ND 99.8 60-140 4.51 25 <br /> Surrogate:1,2-DCA-d4 47.3 50.0 94.6 60-140 <br /> Batch 1010217-EPA 5030B PIT <br /> Blank(1010217-BLKI) Prepared&Analyzed:01/23/01 <br /> Tert-butyl alcohol ND 200 ug/1 <br /> Methyl tert-butyl ether ND 2.00 " <br /> Di-isopropyl ether ND 2.00 " <br /> Ethyl tert-butyl ether ND 2.00 " <br /> Tert-amyl methyl ether ND 2.00 " <br /> Ethanol ND 3000 " <br /> Surrogate:1,2-DCA d4 46.8 50.0 93.6 60-140 <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document. This analytical report must be reproduced in its entirety. <br /> Page 7 of 9 <br /> lu <br />