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' Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical <br /> � �Ty�� 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> j-) a y 1 <br /> moria Environmental-Oakland Project Shell,341 East Main St,Ripon CA Sampled 7/15198 <br /> 1144 65th Street,Ste C Project Number N/A Received 7117/98 <br /> Oakland,CA 94608 Pro ect Manager Owen Ratchye Reported 8/3/9$ <br />' Volatile Organic Compounds by EPAMethod 8010B/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Anal e Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br />' Date Prepared. 7127198 Extraction Method, EPA 50300 (MeO111 <br /> Btanlc 8070366-BLK1 <br /> Bromodichloromethane 7/27/98 ND ug/kg Soo <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 /> Dibromochioromethane ND 500 <br /> 1,3-Dichlorobenzene ND 500 <br /> 1,4-Dichlorobenzene ND 500 <br /> 1,2-Dichlorobenzene ND 500 <br /> 1,1-Dichloroethane ND 500 <br /> -Dichloroethane ND Soo <br /> ,1-Dichloroethene ND Soo <br /> icis-1,2-Dichloroethene ND e' 500 <br /> trans-l,2-Dichloroethone ND 500 <br /> 1,2-Dichloropropane ND 500 <br /> cis-1,3-Dichloropropene ND 500 <br /> trans-l,3-Dichloropropene ND Soo <br /> Methylene chloride " ND 500 <br /> 1,1,2,2-Tetrachloroethane ND 500 <br /> ' Tetrachloroethene ND Soo <br /> 1,1,1-Trtchloroethane " ND 500 <br /> 1,1,2-Trichloroethane " ND 500 <br /> Trichloroethene ND 500 <br /> Trichlorofluoromethane ND 500 <br /> Vinyl chloride ND too <br /> Surrogate Broatochloromethane " 200 258 600-140 129 <br /> Surrogate 2-Chlorotoluene 200 238 600-140 119 <br /> US 8070366-051 <br /> Chlorobenzene 7127/98 400 330 ug/kg 70 0-130 825 <br /> 1 1,1-Dichloroethane 200 168 700-130 840 <br /> Trichloroethene 200 150 700-130 750 <br /> Surrogate Bromochloromethane 200 182 600-140 910 <br /> 1 Surrogate 2-Chlorotoluerie 200 166 600-140 830 <br /> quota An ytical-Sacramento *Refer to end of report for text of nates and definitions <br /> da C Schneider,Laboratory Director Page 14 of 16 <br />