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� Y <br /> 819 Striker Avenue Surte 8 <br /> Sequoia Sacramento C 95834 <br /> (916)921-9600 1-9600 <br /> FAX (916)92 1-0100 <br /> Analytical www sequoialabs con, <br /> SECOR IntLrnational-Rancho Cordova Project ARCO 595, Stockton CA <br /> 3017 Kilgore Road,Suite 100 Project Number NIA Reported <br /> Rancho Cordova CA 9500 Project Manager Rusty Benkosky 05/24/01 09 30 <br /> Volatile Oxygenate Compounds by EPA Method 8260A - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reportin_y Spike SourCI 016REC RPD <br /> Analvtc Rcsuli Limit Units Level Result %REC Ltmiis RPD I[inti Noir s <br /> Batch 1050154- EPA 5030B IP/TI <br /> Blank(1050154-BLKI) - - Prepared&Analyzed 0511 1101 <br /> Tert-butyl alcohol ND 200 ug/l <br /> Methyl tert-butyl ether ND 200 <br /> Di-isopropyl ether ND 200 <br /> Ethyl tert-butyl ether ND 2 00 " <br /> Ten-amyl methyl ether ND 200 <br /> Ethanol ND 3000 <br /> 12-Dichloroethane ND 200 <br /> Ethylene dibromtde ND 200 <br /> Surrogate 1 1-DCA-d4 f - 540 -- - - W-- --500 - --- 108 60-140 <br /> LCS(1050154-BSI) Prepared&Analyzed 0511110.1 - - - - <br /> !_'ogate <br /> Cert-butyl ether 50 200 ue/I 500 100 60-140 1 2-DCA-d4 556 500 111 60-140 <br /> Matrix Spike(1050154-M_S_1) _ _ Source 5105120-08 Prepared&Analyzed 05/11/01 - <br /> Methyl tert-butyl ether 495 200 ug/lf 500 ND 972 60-140 - - <br /> Surrogate 1 2-DCA-d4 559 Soo 112 60-140 <br /> Matrix Spike Dup(1050154-MSDI)- Source S105120-08 Prepared&Analyzed 05/11/01 <br /> Methyl Cert-butyl ether 504 200 ugll Soo ND 990 -60.140 - 180 -25 _ - <br /> Surrogate 1 2-DCA-d4 _ - 548 �— 500 110 60-140 <br /> Batch 1050210-EPA 50306 PIT <br /> Blank(1050210-BLK1) _ _ -_— _ ___ Prepared-&Analyzed 05/16/01- <br /> Ter(-butyl alcohol ND 200 ug/I <br /> Methyl Leri-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 /> Ethanol ND 3000 " <br /> 2-Dichloroethane ND 200 <br /> Ethylene dibromtde ND 200 - <br /> Surrogate 12 DCA-d4 529 500 106 60-140 <br /> quota Analytical - Sacramento The results to this report apply to the samples analyzed to accordance a lth the chain of <br /> custod) document This analytical report must be reproduced to its entirety <br /> Page 9ofII <br />