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Sequoia " ,CA Lane% <br /> Walnut Creek,CA 94598 <br /> (925)988-96W <br /> 673 <br /> Analytical FAX equo gabs coin <br /> www segaokatatu oom!� <br /> Gettler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite J Project Number Unocal#0123 Reported <br /> Dublin CA,94568 Project Manager- Deanna L Harding 20-Jul-0011 19 <br /> Volatile Organic Compounds by EPA Method 8010B- Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 0G03007-EPA 5030B [PITT v <br /> Blank(0G03007-BLK4) r. Prepared&Analyzed 29-Jun-00 <br /> Chloromethane ND 20 uWI <br /> Vinyl chlonde ND 10 <br /> Bromomedmc ND 10 " <br /> Chlorodhane ND 10 " <br /> Trichlorofluoromethane ND 050 " <br /> Freon 113 ND 10 " <br /> 1.I-Dichlomethene ND 10 " <br /> Methylene chlonde ND 10 " <br /> trana-1,2-Drchlowethene ND 10 " <br /> 1,1-Dichloroedma ND 10 " <br /> cw-1,2-Dichloroathene ND 10 " <br /> Chloroform ND 10 " <br /> 1,1.1-Tnchlomesthane ND 10 {• <br /> Carbon tetrachlonde ND 10 <br /> 1,2-Dichloroadwne ND 20 " <br /> Triddotrethane ND 10 " <br /> 1,2-DlchlOro proparw ND-I 0 " <br /> Bromodichloromethane ND l0 " <br /> ora-1,3-Drehloropropare =ND 10 — <br /> tr=-1,3-Diehl ropropmie ND 050 " <br /> -1,1,2-Trichloroethane --- - --ND- -- 050- - - --- - - ----- - - - - - �--- - - — — — <br /> Tetrachloroadwne ND 10 " <br /> Drbromochloromethane ND 050 " <br /> 1,2-Drbromoadme ND 10 " <br /> Chlorobenzene ND 10 " <br /> Bromoform ND 050 " <br /> 1.2,3-Tnchloropropane ND 050 " <br /> 1,1,2,2-Tairad loroethane ND 0 50 " <br /> 1,3-Dichlorobenzene ND 050 " <br /> 1,4-Dichlorobmizene ND 10 " <br /> 1,2-Drchlorobm¢ene ND 20 " <br /> Surrogate Dibromodrjkroromedxw 950 10.0 95 0 50-150 <br /> Serrogate 4-Bromofluorobenzerre 920 100 910 50.150 <br /> Sequoia Analytical-Walnut Creek The results in chis report apply to the samples analyzed In accordave wilt dre ehaln of <br /> custody docuinett T7us analytical report must be reproduced In its entirety . <br /> Page 18 of 20 <br />