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i <br /> i <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)3649600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Geek CA 94598 (925)988-9600 FAX(925)988 9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)92t-0100 <br /> Analytical 1455 McDonnell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707) 792-0342 <br /> f 551 Industrial Road San Carlos CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> SECOR Intemational Project Chevron 9-6258,Stockton,CA Sampled 4/6/99 to 417/99 <br /> 9912 Business Park Drive,Ste 100 Project Number 7GO07-018-01 Received 4/8/99 <br /> Sacramento,CA 95827 Project Manager Roger Hoffmore Reported 4/22/99 <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 /> Anal to Anal ed Level Result Result Units Recov Limits % Limit % Notes' <br /> Blank(conti(LUS_d) 9040261 <br /> Trichloroethene 4121/99 ND ug/kg 500 <br /> Trichlorofluoromethane ND 500 <br /> Vinyl chloride ND 100 <br /> Surrogate Bromochloromethane 200 172 600-140 860 <br /> Surrogate 2-Chlorotoluene 200 200 600-140 100 <br /> r•Cc 904QZ61-BSI <br /> Chlorobenzene 4/21/99 400 420 ug/kg 700-130 105 <br /> i,l-Dichlorocthane 200 200 700-130 100 1 <br /> Trichloroethene 200 218 700-130 109 <br /> Surrogate Bromochloromethane " 200 194 600-140 970 <br /> Surrogate 2-Chlorotoluene 200 206 600-140 103 <br /> Matrix Spike 2040261-MSI 5904159-29 <br /> fhlorobenzene 4/20/99 400 NO 304 ug/kg 600-140 760 <br /> ,I-Dichloroethane 200 NO 146 600-140 730 <br /> Trichloroethene 200 NO 166 600-140 83 0 <br /> Surrogate Bromochloromethane 200 138 600-140 690 <br /> Surrogate 2-Chlorotoluene 200 226 600-140 113 <br /> Matrix Spike Dup 2UQ261-MSDI S904159-29 <br /> Chlorobenzene 4/20/99 400 NO 378 ug/kg 600-140 945 25 0 2I 7 <br /> I,1-Dichloroethane 200 NO 178 600-140 890 25 0 19 8 <br /> Trichloroethene 200 NO 222 600-140 111 250 9 4 <br /> Surrogate Bromochloromethane 200 232 600-140 116 <br /> Surrogate 2-Chlorotoluene 200 234 600-140 117 <br /> lWequoia Aralyt,zal-Secrdmento *hefer to end of report fur text of notes and definitions <br /> Sandra R Hanson,Client Services Representative Page 21 of 23 <br />