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Q Sequoia 6110 G.napeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget lane Walnut Creek,CA 94598 (925)9a8-9600 FAX(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)792 0342 <br /> Pacific Environmental Group-Sac Project Unocal 0123,Tracy,CA Sampled 10/6/98 <br /> 11315 Sunrise Gold Circle St M Project Number 910-017 ]A Received 1017198 <br /> tRancho 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 RTD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Linut % Notes* <br /> Batch. 8100176 pate Prepared. 10/14/98 Extraction Method. EPA 5030B [MeOHI <br /> Blank 8100176-BLK1 <br /> Bromodichloromethane 10/14/98 NO ug/kg 500 <br />' Bromoform NO 500 <br /> Bromomethane NO 100 <br /> Carbon tetrachloride NO 500 <br />' Chlorobenzene NO 500 <br /> Chloroethane NO 100 <br /> 2-Chloroethylvinyl ether NO 100 <br /> Chloroform NO 500 <br />' Chloromethane " NO " 100 <br /> Dibromochloromethane NO 500 <br /> 1,3-Dichlorobenzene NO 500 <br /> 14-Dichlorobenzene NO 500 <br /> 02-Dichlorobenzene NO 500 <br /> ,1-Dichloroethane NO 500 <br /> 1,2-Dichloroethane NO 500 <br />' 1,1-Dichloroethene NO 500 <br /> cls-1,2-Dichloroethene " NO " 500 <br /> trans-1,2-Dichloroethene NO 500 <br /> 1,2-Dichloropropane NO 500 <br /> cis-1,3-Dichloropropene NO Soo <br /> trans-l,3-Dichloropropene NO 500 <br /> Methylene chloride NO 500 <br /> 1,1,2,2-Tetrachloroethane NO 500 <br /> Tetrachloroethane NO 500 <br /> 1,1,i-Trichloroethane NO 500 <br /> 1,1,2-Trichloroethane NO 500 <br />' Tnchloroethene " NO " 500 <br /> Trichlorofluoromethane NO 500 <br /> Vinyl chloride NO 100 <br /> Surrogate Bromochloromethane 200 200 600-140 100 <br />' Surrogate 2-Chlorotoluene 200 160 600-140 800 <br /> LCS 81,04176-BSI <br /> Chlorobenzene 10/14/98 400 502 ug/kg 700-130 126 <br /> 1,1-Dichloroethane 200 158 700-130 790 <br /> Trichloroethene 200 158 700-130 790 <br /> Surrogate Bromochloromethane 200 170 600-140 850 <br /> Surrogate 2-Chlorotoluene 200 166 ot 600-140 830 <br /> Sequoia Analytical -Sacramento *Refer to end of report for text of notes and defimttons <br /> n <br /> coda C Schnee er,Laboratory Director Page 14 of 16 <br />