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680 Chesapeake Drive Redwood City CA 94063 (650)364 9600 FAX(650)364 9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 455 <br /> Analytical 1551 �n`dus at Il�d North Ste D Petaluma os CA 94070 41 I 1 (650)232 9600 FAX(6 0)232-9612 <br /> SECOR[ntemational Project Arco 4932,Stockton,CA Sampled 6/2/99 <br /> 9912 Business Park Drive,Ste 100 Project Number NIA Received 618/99 <br /> Sacramento,CA 95827 Project Manager Rusty Benkosky Reported 6/10/99 <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 /> Analytc Analyzed Level Result Result Units Recov Limits % Limit % dotes* <br /> Batch. 9060150 Ratr Prepared. 619199 Extraction Method, EPA 5030B [MeOHI <br /> Blank 9060150-BLKI <br /> Bromodichloromethane 6/9/99 ND ug/kg 500 <br /> Bromoform ND 500 <br /> Bromomethane ND 100 <br /> Carbon tetrachloride ND 500 <br /> Chlorobenzene ND 500 <br /> Chloroethane ND 100 <br /> 2-Chloroethylvinyl ether ND 100 <br /> Chloroform ND 500 <br /> Chloromethane ND 100 <br /> Dibromochloromethane ND 5 00 <br /> 1,3-Dichlorobenzene ND 500 <br /> 1,4-Dichlorobenzene ND 500 <br /> chlorobenzene ND 5 00 <br /> 1, /chloroethane ND 5 00 <br /> 1,2-Dichloroethane ND 500 <br /> 1,1-Dichloroethene ND 500 <br /> cis-1,2-Dichlorocthene ND 5 00 <br /> trans-1,2-Dichloroethene ND 500 <br /> 1,2-Dichloropropane ND 500 <br /> cis-l,3-Dlchloropropene ND Soo <br /> trans-l,3-Dichloropropene ND 5 00 <br /> Methylene chloride ND 500 <br /> 1,1,2,2-Tetrachloroethane ND Soo <br /> Tetrachloroethene ND Soo <br /> 1,1,1-Trichloroethane ND 5 00 <br /> 1,1,2-Trichloroethane ND 500 <br /> Trichloroethene ND 500 <br /> Trichlorofluoromethane ND Soo <br /> Vinyl chloride ND 100 <br /> Surrogate Bromochloromethane 200 160 600-140 800 <br /> Surrogate 2-Chlorotoluene 200 176 600-140 880 <br /> LCS 9060150-BSt1 <br /> Chlorobenzene 6/9/99 400 348 ug/kg 700-130 870 <br /> I,I-Dichloroethane 200 148 700-130 74 0 <br /> Trichloroethene 200 162 700-130 810 <br /> Surrogate Bromochloromethane 200 176 600-140 880 <br /> Surrogate 2-Chlorotoluene 200 194 600-140 970 <br /> 0 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> Sandra R Hanson,Client Services Representative Page 3 of 5 <br />