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_ Sequoia °Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(4550)364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (9z5)988-9600 FAX(9Z5)M-%73 <br /> 819 Striker Avenue Sulte ll Sacramento CA 95834 (916)921-96M FAX(916)9z1-0100 <br /> �,,,�► Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792 1865 FAX(707)792-0342 <br /> 1551 Industrial Road San Carlos CA 94070-4111 (650)232 9600 FAX(650)232-9612 <br /> SECOR International Project Chevron 9-6258,Stockton,CA Sampled 4115/99 <br /> 9912 Business Park Drive,Ste 100 Project Number 7GO07-018-01 Received 4116/99 <br /> Sacramento,CA 95827 Project Manager Roger Hoffmorc Reported 4130/99 <br /> Volatile Organic Compounds by EPA Method 8010B/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte <br /> Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch, 9040327 Date Prepared, 4/26/99 Extraction Method. EPA 50308 lP/Tl <br /> Blank 90411327-FILKI <br /> Bromodichloromethane 4/26/99 ND ug/l 0 500 <br /> Bromoform ND " 0 500 <br /> Bromomethane ND 100 <br /> Carbon tetrachloride ND 0 500 <br /> Chlorobenzene ND 0 500 <br /> Chloroethane ND 100 <br /> 2-Chloroethylvinyl ether ND 1 00 <br /> Chloroform ND 0 500 <br /> Chloromethane ND 100 <br /> Dibromochloromethane ND 0 500 <br /> 1,3-Dichlorobenzene ND 0 500 <br /> 1,4-Dichlorobenzene ND 0 500 <br /> 2-Dichlorobenzene ND 0 500 <br /> 1-Dichloroethane ND 0 500 <br /> 1,2-Dichlorobenzene <br /> ND 0 500 <br /> 1,1-Dichloroethene ND 0500 <br /> cis-1,2-Dichloroethene ND 0 500 <br /> trans-1,2-Dichloroethene ND 0 500 <br /> 1,2-Dichloropropane ND 0 500 <br /> cis-1,3-Dichloropropene ND 0 500 <br /> trans-l,3-Drchloropropene ND 0 500 <br /> Methylene chloride ND 500 <br /> 1,1,1,2-Tetrachloroethane ND 0 50+) <br /> Tetrachloroethene ND 0 500 <br /> 1,1,1-Trichloroethane ND 0500 <br /> 1,1,2-Trichloroethane ND 0 500 <br /> Tnchloroethene ND 0 500 <br /> Trichlorofluoromethane ND 0 500 <br /> Vinyl chloride ND 1 00 <br /> Surrogate Bromochloromethane 100 910 700-130 910 <br /> Surrogate 2-Chlorotoluene 100 110 700-130 110 <br /> IQS 9040327-BS <br /> Chlorobenzene 4/26/99 200 207 ug/l 700-130 104 <br /> 1,1-Dichloroethane 100 820 650-135 82 0 <br /> Trichloroethene 100 103 700-130 103 <br /> Surrogate Bromochloromethane 100 890 700-130 890 <br /> Surrogate 2-Chlorotoluene 100 108 700-130 108 <br /> 46quota Analytical_-Sacramento 'Refer to end of report for tea of notes and di f nin,,s� <br /> C � <br /> Sane Page 10 of 14 <br /> Sandra R Hanson,Clien Services Representativ <br />