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819 Striker Avenue Suite 8 ' <br /> Sacramento CA 95834 <br /> Sequoia (916)921-9600 <br /> FAX(916)921-0100 <br /> Analytical www sequo--*lalabs corn 1 <br /> SECOR International-Rancho Cordova Project Arco 4932, Stockton,CA , <br /> 3017 Kilgore Road,Suite 100 Project Number N/A Reported <br /> Rancho Cordova CA,95670 PrRlect Manager Rusty Benkosky 08/08/01 18 07 <br /> Volatile Oxygenate Compounds by EPA Method 8260A - Quality Control ' <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %RFC RPD ' <br /> Analyte Result Limit Units Level Result %R-EC Llnllts RPD Limit Notes <br /> Batch 1070304- EPA 5030B JP/TJ <br /> Blank(1070304-BLK1) _ —_ Prepared&Analyzed 07/31/01 <br /> Tert-butyl alcohol ND 200 ug/l <br /> Methyl tert-butyl ether ND 20 ' <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tert butyl ether ND 20 <br /> Tert-amyl methyl ether ND 20 " <br /> Ethanol ND 3000 t <br /> 12-Dichloroethane ND 20 <br /> Ethylene dtbromtde ND 20 <br /> Surrogate 1 2-DCA d4 542 500 108 60-140 <br /> LC_S(1_070304-BSI) Prepared&Analyzed 07/31/01 <br /> Methyl tert-butyl ether 55 5 20 ug/1 500 111 60-140 <br /> Surrogate 12-DCA-d4 589 500 118 60-140 <br /> Matrix Spike(1070304-MSI) _ _ Source S107239-07 Prepared&Analyzed 07/31/01 <br /> Methyl tert-butyl ether 527 20 ug/1 500 ND 105 60-140 <br /> Surrogate 12-DCA-d4 556 500 111 60-140 <br /> Matrix Spike Dup(1070304-MSDI) Source 5107239-07 Prepared&Analyzed 07/31/01 <br /> Methyl tent-butyl ether 534 20 ug/1 500 ND 107 60-140 1 32 25 <br /> Surrogate 1 2-DCA-d4 553 Soo 111 60-140 <br /> Batch 1080001 -EPA 50308 (P/TJ' <br /> Blank(1080001-BLK1) _ Prepared&Analyzed 08/01/01 <br /> Tert-butyl alcohol ND 200 ugh <br /> Methyl tert-butyl ether ND 20 " <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tert-butyl ether ND 20 e1 ' <br /> Tert-amyl methyl ether ND 20 " <br /> Ethanol ND 3000 <br /> 1,2-Dichloroethane ND 20 <br /> Ethylene dtbromtde ND 20 ' <br /> Surrogate 1 2-DCA-d4 53 1 500 106 60-140 <br /> i <br /> Sequoia Analytical- Sacramento The results in this report apply to the samples analyzed in accordance with the char AW <br /> custody document This analytical report must be reproduced to its entirety ' <br /> Page 9 of 1 I ' <br />