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` 885 Jarvis Di <br /> 4D— <br /> Sequoia Morgan 40 776 9607 <br /> (408)77G 9G00 <br /> 308 <br /> �I Analytical www <br /> cgvim762Goin <br /> www sequoialabs coin <br /> Secor-Rancho Cordova(ARCO) Protect ARCO#0595,Stockton,CA MNG0109 <br /> 3017 Kilgore Fid Suite 100 Project Number 62546 Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 07/20/04 20 24 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - Morgan Hill <br /> Reporting <br /> Analyte Result Limit Uruts Dilution Batch Prepared Analyzed Method Mote <br /> MW-1 (MNG0109-01)Water Sampled 07/02/04 11 45 Received 07/07/04 10 05 <br /> tert-Amyl methyl ether ND 50 ug/l 10 4G15001 07/15/04 07/15/04 EPA 8260B <br /> Benzene 570 50 <br /> Di-isopropyl ether ND 50 " <br /> 1,2-Dibromoethane(EDB) ND so <br /> 1,2-Dtehloroethane ND 50 <br /> Ethanol ND 1000 " <br /> Ethyltett-butyl ether ND 50 <br /> " <br /> EthylbenND 50 <br /> zene <br /> Methyl tcrt-butyl ether 10 50 <br /> 50 <br /> Toluene ND <br /> Xylenes(total) ND 50 <br /> Gasoline Range Organics(C4-C12) 1900 500 " <br /> Surrogate 1,1-Dichloroethane-d4 <br /> 97% 78-129 " <br /> -1(MNG0109-01RE1)Water Sampled 07/02/04 11 45 Received 07/07/04 110 05 <br /> tert-Butyl alcohol ND 50 ugll I 4GI6005 07116/04 07/16/04 EPA 8260B <br /> Surrogate 12-Drchloroethane-d4 107% 78-129 <br /> MW-3(MNG0109-02)Water Sampled 07/02/04 08 56 Received 07/07/0410 05 <br /> tert-Amyl methyl ether ND 050 ug/1 1 4G14020 07/14/04 07/14/04 EPA 8260B <br /> Benzene 053 050 <br /> tcrt-Butyl alcohol 67 50 <br /> Di-isopropyl ether ND 050 <br /> 1,2-Dibromoethane(EDB) ND 050 <br /> 1,2-Dichloroethane 17 0 50 <br /> Ethanol ND 100 <br /> Ethyl tert-butyl ether ND 050 <br /> Ethylbenzene ND 050 <br /> Methyl tert-butyl ether 26 050 <br /> 0 50 <br /> Toluene ND " <br /> Xylenes(total) ND 050 <br /> Gasoline Range Organics(C4-C12) ND 50 <br /> Surrogate 12-Dichloroethane-d4 84% 78-129 " <br /> •Sequoia Analytical -Morgan Full The results in this report apply to the samples analyzed in accordance with the chain of <br /> cuslody document Unless olhenvise slated results are reported on a wet weight basis <br /> This analyrtcal report must be reproduced in its entirely <br /> Page 4 of 21 <br />