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819 Striker Avenue Suite 8 <br /> Sequoia Sacramento CA <br /> (9 16)921-9600 <br /> Analytical FAX(916}alabs 921 c 100 <br /> a- — ,�.,�,vv sequoialabs corn <br /> SECOR International- Rancho Cordova Project ARCO 595 Stockton CA <br /> 3017 Kilgore Road Suite 100 Project Number NIA Reported <br /> Rancho Cordova CA 95670 Project Manager Rusty Benkosky 03/21/01 17 22 <br /> Volatile Oxygenate Compounds by EPA Method 8260A - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source °r"RIC RPD <br /> Analyte Result Lima Units Level Result ".RDC Limits RPD t nnti NODS <br /> Batch 1030167- EPA 5030B [PIT] <br /> Blank(1030167-BLKI) Prepared& Anakztd 03/14/01 <br /> Teri-butyl alcohol ND 200 ug/l <br /> Methyl tert-butyl ether ND 2 00 <br /> Di-isopropyl ether ND 200 " <br /> Ethyl tent-butyl ether ND 200 " <br /> Teri-amyl methyl ether ND 2 00 <br /> Ethanol ND 3000 " <br /> 1,2-Dichloroethane ND 200 " <br /> Ethylene dibromide ND 200 <br /> Surrogate 1 2-DCA-d4 - - 469 - -- _ 500 -- - 938 60-140 <br /> LCS(1030167-BSI) -_-_ _ Prepared& Anal%zed 0311.1!01_- _ <br /> Methyl ter-butyl ether 505 200 ug/l 500 101 �60-140 - <br /> gate 1 2-DCA-d4 - - - � � ----442 -�` -�------ " 500 884 60-140 <br /> LCS Dup(1030167-BSD1) _ _ T _ Prepared& Anal-,zed 03/14/01 - <br /> Methyl tert-butyl ether 53 9 2 00 ug/l 500 _108 T60-140- 6 51 _ 25 <br /> Surrogate 12-DCA-d4 _ T W 473 500 946 60-140 <br /> Matrix_Spike(103_0167-MSI) _Source_ 5103041-06 _ Prepared& Anal?zed 03/1.3/0] - <br /> Methyl tett-butyl ether W 247 200 ug/l 500 206 82 0 60-140 <br /> Surrogate 1 2-DCA-d4 454 - — --- - _ - 500 _ - 90 8 60-140 <br /> Matrix Spike Dup(1030167-MSD I) Sou_r_c_e_S103041-0_6 Prepared&Anahzed03/14/01 <br /> Methyl tert-butyl ether _ 261 _ 2 00 ug/l. 500 206 110 60-140 5 51 25 <br /> Surrogate 1 2-DCA-d4 450 - 500 900 60-140 <br /> Batch 1030199- EPA 5030B P/T <br /> Blank(1030199-BLKI) -- _- Prepared&Anal\zed-03/16101 _ <br /> Tert-butyl alcohol ND 200 ug/l <br /> Methyl cert-butyl ether ND 2 00 " <br /> Di-isopropyl ether ND 2 00 " <br /> Ethyl tert-butyl ether ND 200 " <br /> Tert-amyl methyl ether ND 200 " <br /> Ethanol ND 3000 <br /> i 2-Dichloroethane ND 2 00 <br /> Ethylene dibromide ND 2 00 " <br /> quoia 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 9 of I <br />