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1 Sequoia 619 Striker Avenue,Suite 8 <br /> ® `� Sacramento,CA 95834 <br /> /� <br /> (916)921-9600 <br /> Analytical FAX(916)921-0100 <br /> J www.sequoiaiabs.corn <br /> Stratus Environmental Project: ARCO 5469, Stockton, CA <br /> 3330 CameronProject <br /> Park Drive, Ste. 550 NSampled: b/23/00 <br /> umber: NIA Received: 6/23/00 <br /> Cameron Park,CA 95682 Project Manager: Jay Johnson <br /> Reported: 7/10100 <br /> VOIatIIe Ok U r F "� r ,�- <br /> n "E ybenate Compounds'by EPA'Method 8260A/Quay Control <br /> x <br /> Sequoia Analytical Sacramento <br /> Date Spike Sample QC Reporting Limit Recov, RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes* <br /> Batch: 0060258 Date Prenared: 7/3100 <br /> Blank --0060288_BLK1 Extraction Method- EPA 50308 P <br /> Tert-butyl alcohol 7/3100 ND ug/I <br /> Methyl tert-butyl ether ND " 200 <br /> Di-isopropyl ether 2.00 <br /> Ethyl tert-butyl ether ND 2.00 <br /> 'Pert-amyl methyl ether ND 2.00 <br /> Ethanol ND 2.00 <br /> " <br /> 1,2-Dichloroethane " ND 3000ND " <br /> Ethylene dibromide 2.00 <br /> Surrogate: 1,2-DCA-d4 - ND 2.00 <br /> 50.0 55.6 60.0-140 111 - <br /> LCS 0060288-BS1 <br /> Methyl tert-butyl ether 7/3/00 50.0 46.0 ugll 70.0-130 92.0 <br /> -'o ate: 1,2-DCA-d4 50.0 - Sb.O -~- - <br /> 60.0-140 112 <br /> LCS Dun 0060_ ..8g-BSD1 <br /> Methyl tert-butyl ether 7/3/00 50.0 <br /> Surrogate: 1,2-DCA-d4 _ 44.6 ug/I 70.0-130 89.2 25.0 3.09 <br /> 50.0 56.2 60.0-140 112 -- - <br /> Batch: 0070016 Date Prepared: 7/6/00 Extraction Method: EPA 5030B 1P/Tl <br /> Blank 0070016_BLKI <br /> Tert-butyl alcohol 7/6/00 ND ug/I 2U4 <br /> Methyl tort-butyl ether ND 2.00 <br /> Di-isopropyl ether RTD 2.00 <br /> Ethyl tert-butyl ether ND 2.00 <br /> Tert-amyl methyl ether " ND " 00 <br /> Ethanol <br /> 1,2-Dichloroethane ND 3000ND 2.00 <br /> Ethylene dibromide D x.00 <br /> Surrogate: 1,2-DCA-d4 50.0 46.NN - - <br /> 60.0-140 93.6 <br /> LCS 2(170036-BSI <br /> Methyl tort-butyl ether 7/6/00 50.0 <br /> Surrogate: 1,2-DCA-d4 X3.2 ug/I 7U.0-130 106 <br /> 50.0 47.2 60.0-140 94.4 <br /> LCS Dup 00700_ _ 16-BSD1 <br /> Methyl tert-butyl ether 716%00 50.0 53.0 u;/1 7U.0 130 106 25.0 <br /> Surrogate: 1,2-DCA-d4 50.0 47.8 b0.0-13 95.6 0 <br /> Sequoia Analytical-Sacramento *Refer to end ofreport for text of notes and definitions. <br /> _ Page I I of 13 <br />