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tD Sequoia San an Carlos I11mC al Road <br /> CA 9,070 <br /> All alytical (654)232_96 <br /> FAX(650)232_961212 <br /> www sequaialabs com, <br /> Gettler-Ryan/Geostrategnes(1) Project-Unoca](4) <br /> 6747 Sierra Court,Suite J Project Number Former Unocal#5098&Montgmery Ward Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 03/26/02 12 44 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte Result Limit Units ' Dilution Batch Prepared ` Analyzed Method Notes <br /> MW-3 L203015-04 Water Sampled 03/05/02 12 10 Received 03/05/02 18 25 R-Q5 <br /> Benzene 110 17 ug/l 933 2030017 03/08/02 03/13/02 EPA 8260B <br /> Bromobenzene ND 17 <br /> Bromochloromethane ND 17 <br /> Bromodnchloromethane ND 17 „ <br /> Bromoform ND 17 <br /> Bromomethane ND 42 <br /> n-Butylbenzene ND 17 <br /> sec-Butylbenzene ND 17 <br /> Tert-butylbenzene ND 17 „ <br /> Carbon tetrachloride ND 17 <br /> „ <br /> Chlorobenzene ND 17 <br /> Chloroethane ND 42 <br /> Chlorofonn- ND 17 <br /> Chloromethane ND 42 <br /> 2-Chlorotoluene ND 17 <br /> „ <br /> 4-Chlorotoluene- ND 17 <br /> Dibromochloromethane ND 17 <br /> 1,2-Dibromoethane ND 17 " <br /> Dibromomethane ND 17 <br /> 1,2-Dibromo-3-chloropropane ND 42 <br /> 1,2-Dichlorobenzene ND 17 , <br /> =]=,3-Dichlorobenzene ND 17—'$ - <br /> 1,4-Dichlorobenzene ND 17 <br /> - i chlorodi fl uoromethane- -- ---- ND------ 42--- --�— -- „ --- „ „ -_- - - <br /> 1,1-Dichloroethane ND 17 <br /> 1;2-Dichloroethane - - - - ND --17 - <br /> 1,I-Dichloroethene ND 17 <br /> cis-1,2-Dichloroethene ND 17 <br /> trans-l;2-Dichloroethene- " u ND_ 17_ <br /> 1,2-Dichloropropane ND 17 <br /> 1,3-Dichloropropane ND 17 <br /> 2,2-Dichloropropane ND 17 <br /> 1,1-Diehl oropropene ND _ 17 <br /> Ethylbenzene ND 17 „ <br /> Hexachlorobutadiene ND 17 <br /> Isopropylbenzene ND 17 <br /> p-Isopropyltoluene ND 17 <br /> Methylene chloride ND 42 <br /> Naphthalene ND 42 - - -- -- "- - - - ---„ -- - - - - - - - <br /> n-Propylbenzene ND 17 <br /> Sequoia Analytical - San Carlos The iesults 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 19 of 91 <br />