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Sequoia 600 CILeSapeake Drive Redwood City CA 9406c- (650)364-9600 FAX(650)364-9233 <br /> 404 N WISet lane Walnut Creek CA 94598 (9Z5)988-9600 TAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)79Z-034Z <br /> Pacific Environmental Group-Sac Project Unocal 0123,Tracy,CA Sampled 1016198 <br /> 11315 Sunrise Gold Circle St M Project Number 910-017 lA Received 10/7/98 <br />' Rancho Cordova,CA 95742 Project Manager Mike Mitchener Reported 10/20/98 <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 Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 8100176 Date Prepared 10/14/98 Extraction Method EPA 5030B[MeQUI <br /> Bland 8100176-BLKI <br /> Bromodichloromethane 10/14/98 ND ug/kg 500 <br />' Bromoform NO 500 <br /> Bromomethane NO 100 <br /> Carbon tetrachloride ND 500 <br /> Chlorobenzene NO 500 <br />' Chloroethane NO " 100 - <br /> 2-Chloroethylvinyl ether NO 100 <br /> Chloroform NO 500 <br /> Chloromethane NO 100 <br /> Dibromochkoromethane NO " 500 <br /> 1,3-Dichlorobenzene NO 500 <br /> 1,4-Dichlorobenzene NO 500 <br /> 02-Dichlorobenzene NO 500 <br /> 1-Dichloroethane NO Soo <br /> 1,2-Dichloroethane NO 500 <br /> 1,1-Dichloroethene NO 500 <br />' cis-1,2-Dichloroethene " NO " 500 <br /> trans-l,2-Dichloroethene NO 500 <br /> 1,2-Dichloropropane NO 500 <br />' cis-1,3-Dichloropropene NO Soo <br /> tran s-1,3-Di chloropropene NO 500 <br /> Methylene chloride NO 500 <br /> 1,1,2,2-Tetrachloroethane NO 500 <br />' Tetrachloroethene NO 500 <br /> 1,1,1-Tnchloroeth ane NO 500 <br /> 1,1,2-Trichloroethane NO 500 <br />' Trichloroethene NO 500 <br /> Trichlorofluoromethane NO 500 <br /> Vinyl chloride NO 10 0 <br /> Surrogate Bromochloromethane 200 200 600-140 100 <br /> Surrogate 2-Chlorotoluene 200 160 600-140 80 0 <br /> LCS 8100111 <br /> Chlorobenzene 10/14/98 400 502 ug/kg 700-130 126 <br />' <br /> 1,1-Dichloroethane " 200 158 700-130 79 0 <br /> Trichloroethene 200 158 700-130 79 0 <br /> Surrogate Bromochloromethane 200 170 600-140 85 0 <br /> Surrogate 2-Chlorotoluene 200 166 600-140 83 0 <br /> f <br /> Sequoi Analytical-Sacramento *Refer to end of report for text ofnotes and definitions <br /> mda C Schn ider,Laboratory Dire for Page 10 of 13 <br />