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1 <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (91[6)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 Protect Unocal 0123,Tracy,CA Sampled 10/6198 <br /> 11315 Sunrise Gold Circle St M Protect Number 910-017 IA Received 10/7/98 <br />' Rancho Cordova,CA 95742 Project Manager Mike Mttchener Reported 10/16/98 <br /> Volatile Organic Compounds by EPA Method 8010B/Quality Control <br /> Sequoia Analytical-Sacramento s <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Matrix Spike 8 00195-MS1 580369-06 <br /> Chlorobenzene 10/9/98 200 ND 226 ug/1 600-140 113 <br /> I,1-Dichloroethane 100 ND 115 600-140 115 <br />' Trichloroethene 100 ND 108 600-140 108 <br /> Surrogate Bromochloromethane " 100 11 7 700-130 117 <br /> Surrogate 2-Chlorotoluene 100 110 700-130 110 <br /> Matrix Spike Duo 8100195-MSD1 5809369-06 <br /> Chlorobenzene 10/9198 200 ND 191 ug/I 600-140 955 25 0 168 <br /> 1,1-Dichloroethane 1010 ND 990 600-140 990 250 15 0 <br /> Trichloroethene 100 ND 860 60 0-140 860 25 0 227 <br />' Surrogate Bromochloromethane 100 11 7 700-130 117 <br /> Surrogate 2-Chlorotoluene 100 920 700-130 920 <br /> r <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> I <br /> y ��� <br /> inda C Schneider, Laboratory Director Page 1 1 of 13 <br /> rP� <br />