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404 N.Wiget Lane <br /> Sequoia Walnut Geek 98 94598 <br /> {925}988-96` 0 <br /> FAX(925)988-%73 <br /> Ico Analytical molala .nor„ <br /> k <br /> Gettler Ryan,Inc.-Dublin Project: Chevron <br /> 6747 Sierra Court Suite J Project Number: Chevron 9-8264 Reported: <br /> Dublin CA,94568 Project Manager: Deanna L.Harding 15-Jun-00 11:50 <br /> Volatile Organic Compounds by EPA Method 8010B Quality Control <br /> Sequoia Analytical -Walnut Creep <br /> ! <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch OE30010-EPA 5030E [PIT] ! <br /> Blank(OE30010-BLK4) Prepared&.Analyzed:05-Jun-00 <br /> Chloromethane ND 2.0 ugA <br /> Vinyl chloride ND 1.0 " <br /> Bromomethme ND 1.0 " <br /> Chloroethane ND 1.0 " <br /> Trichlorofluoromethane ND 0.50 " <br /> Freon 113 ND 1.0 " <br /> IJ-Dichloroethene ND 1.0 i <br /> Methylene chloride ND 10 <br /> i <br /> trans-1,2-Dichloroethene ND 1.0 " <br /> 1,1-Didiloroethane ND 1.0 " <br /> cis-1,2-Dichloroethene ND 1.0 " <br /> Chloroform ND 1.0 " <br /> 1,1,1-Trichloroethane ND 1.0 <br /> Carbon tetrachloride ND 1.0 " <br /> 1,2-Diehloroethane ND 2.0 " <br /> Trichloroethene ND 1.0 " <br /> 1,2-Dichloropropane ND 1.0 " <br /> Brornodichloramethane ND Lo " <br /> cis-1,3-Dichloropropene ND 1.0 <br /> trans-l,3-Dichloropropene ND 0.50 " <br /> 13,2-Trichloroethane ND 0.50 " <br /> Tetrachloroethene ND 1.0 " <br /> Dibromachloromethane ND 0.50 " <br /> 1,2-Dibrornoethane ND 1.0 ' <br /> Chlorobenzene ND 1.0 <br /> Bromoform ND 0.50 " <br /> 1,2,3-Trichlompropane ND 0.50 " <br /> 1,1,2,2-Tetrachloroetlme ND 0.50 ! <br /> I <br /> 1,3-Dichlorobenzate ND 0.50 " <br /> 1,4-Dichlor+obenzene ND 1.0 " <br /> 1,2-Dichlorobenzene ND 2.0 <br /> Surrogate:Dibromodiuor omethane 9.20 10.0 92.0 50.150 ; <br /> Surrogate.4-Bromofluorobenzene 9.80 10.0 9&0 50-150 <br /> i <br /> Sequoia Analytical-Walnut Creek The results in thus report apply to the smnples mwd)7ed in accordance with the chain ofd, <br /> custody document T7ds analytical report must be reproduced in its entirety. <br /> i <br /> Page 16 of 23 <br /> i <br /> 1 <br />