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S e o u DA Ca 680 Chesapeake Drive Redwood City CA 94063 (650)364'9600 FAX(650)364-9233 <br /> Wi <br /> 404 N get Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> -�n 11 C a 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 /> acne Technical Services,Inc Project Shell Oil Co Sampled 1119199 <br /> 1680 Rogers Ave Project Number 341 E Main,Ripon1990119-J3 Received 1/22199 <br /> San Jose,CA 95112 Project Manager Fran Thie REPorted 212199 <br /> Volatile Organic Compounds by EPA Method 801OB/Quality Control <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Ltnut % Notes* <br /> Batch 9010319 Date Prepared 1118199 Extraction Method EPA 5030 waters <br /> Blank 9010319-BLK1 <br /> Bromodichloromethane 1118199 ND ug/1 0 500 <br /> Bromoform ND 0 500 <br /> Bromomethane ND 0 500 <br /> Carbon tetrachlonde ND 0 500 <br /> Chlorobenzene ND 0 500 <br /> Chloroethane " ND 0 500 <br /> 2-Chloroethylvinyl ether ND 500 <br /> Chloroform ND 0 500 <br /> Chloromethane ND 0 500 <br /> Dibromochloromethane ND 0 500 <br /> 1,2-Dlbromoethane(EDB) ND 0 500 <br /> 1,2-Dichlorobenzene ND 0 500 <br /> 1,3-Dichlorobenzene ND 0 500 <br /> 104 ane <br /> ND 0 500 <br /> hlorodifluoromethane ND 0 500 <br /> ,1-Dichloroethane ND 0 500 <br /> 1,2-Dichloroethane ND 0 500 <br /> I,I-Dichloroethene ND 0 500 <br /> cis-1,2-Dichloroethene ND 0 500 <br /> trans-1,2-Dichloroethene ND 0 500 <br /> 1,2-Dichloropropane ND 0 500 <br /> cis-1,3-Dichloropropene ND 0 500 <br /> trans-1,3-Dichloropropene ND 0 500 <br /> Freon 113 ND 0 500 <br /> Methylene chloride ND 0 500 <br /> 1,1,2,2-Tetrachloroethane ND 0 500 <br /> 'Tetrachloroethene ND 0 500 <br /> 1,1,2-Trichloroethane ND 0 500 <br /> 1,1,1-Tnchloroethane ND 0 500 <br /> Trichloroethene ND 0 500 <br /> Tnchlorofluoromethane ND 0 500 <br /> Vinyl chlonde ND 0 500 <br /> Surrogate Bromochloromethane 300 312 104 <br /> Surrogate -1 4-Dichlorobutane 300 314 105 <br /> Blank 9010319-BLK2 <br /> Bromodichloromethane 1/22199 ND ug/l 0 500 <br /> Bromoform ND 0 500 <br /> Bromomethane ND 0 500 <br /> Carbon tetrachlonde ND 0 500 <br /> uoia Analytical-Petaluma "Refer to end of report for text of notes and definitions <br /> Page 7 of 13 <br />