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1551 Ios C al Road <br /> � Sequoia San CarlosCA94070 <br /> (650)232 9600 <br /> 7 7 FAX(650)232 9612 <br /> i Analytical www segaoialabscorn <br /> -Ryan/Geostratepies(1) Project Unocal(4) <br />[D7 Sierra Court Suite J Project i�umber Former Unocal SS#2859 Stockton,CAReported <br /> ublin CA 94568 Project Manager Deanna}larding 09/06/01 12 14 <br /> Volatile Organic 8 Oxygenated Compounds by EPA Method 8260B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analvte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MNt1i-14 (L108120-19 Wnter S-impled 08/16/01 19 15 Recened 08/17/01 18 55 <br /> 1 2-Dibromoethane ND 20 ug11 1 1080101 08/23/01 08/23/01 EPA 8260E <br /> 1 2-Dichloroethane ND 20 <br /> Di-isopropyl ether ND 20 " <br /> Ethyl teri-butyl ether ND 20 <br /> Methyl tert-butyl ether 21 20 " <br /> Ten-amyl methyl ether ND 20 " <br /> Tert-butyl alcohol ND 100 " <br /> Surrogate 1,2-Dtchloroethane-d4 888% 76-114 " <br /> Surrogate Toluene-d8 946% 88-110 " <br /> MV1i-15 (L108120-16)Ntliater Sampled 08/17/01 12 36 Received 08/17/0) 18 55 <br /> 1,2-Dibromoethane ND 20 ug/1 1 1080101 08/23/01 08/23/01 EPA 8260B <br /> 1,2-Dtchloroethane ND 20 " <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tent-butyl ether ND 20 " <br /> Mi ert-butyl ether ND 20 <br /> Te yl methyl ether ND 20 " <br /> Ten-butvl alcohol ND 100 " <br /> Surrogate 1,2-Dtchloroethane-d4 936% 76-114 " <br /> Surrogate Toluene-d8 992% 88-110 " <br /> NIW-16(L108120-17)Water Sampled 08/17/01 11 00 Received 08/17/01 18 55 <br /> 1 2-Dibromoethane ND 20 ug/1 1 1080101 08/23/01 08/23/01 EPA 8260B <br /> 1,2-Dichloroethane ND 20 1. " " " <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tent-butyl ether ND 20 " <br /> Methyl ten-butyl ether ND 20 <br /> Tert-amyl methyl ether ND 20 " <br /> Tert-butyl alcohol ND 100 <br /> Surrogate 1,2-Dichloroethane-d4 854% 76-114 " <br /> Surrogate Toluene-d8 924% 88-110 " <br /> Sc1W Analytical - San Carlos The results in this report apply to the samples analyzed m accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 3 of 22 <br />