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► Sequoia680 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 /> 819 Sinker Avenue Suite 8 Sacramento CA 95634 (916) 921 9600 FAX(916)921 OlDO <br /> WQF Analytical <br /> *PDS Services Client project ID Unocal#0123 1034 Central Ave Tracy Sampled Mar 3, 1997 <br /> 2401 Stanwell Dr, Ste 300 Sample Descript Water, U-4 Received Mar 3, 1997 <br /> Concord, CA 94520 Analysis Method EPA 5030/8010 Analyzed Mar 11, 1997 <br /> Attention Jarrel Crider Lab Number 703-0496 Reported Mar 19, 1997 <br /> HALOGENATED VOLATILE ORGANICS (EPA 8010) <br /> Analyte Detection Limit Sample Results <br /> N9/L N9/L <br /> Bromodichloromethane 10 N D <br /> Bromoform 10 N D <br /> Bromomethane 20 N D <br /> Carbon tetrachloride 10 N D <br /> Chlorobenzene 10 N D <br /> Chloroethane 20 N D <br /> 2-Chloroethylvinyl ether 20 N D <br /> Chloroform 10 N D <br /> Chloromethane 20 N D <br /> Dibromochloromethane 10 N D <br /> 1,3-Dichlorobenzene 10 N D <br /> 1,4-Dichlorobenzene 10 N D <br /> 1,2-Dichlorobenzene 10 N D <br /> 1,1-Dichloroethane 10 N D <br /> 1,2-Dichloroethane 10 N D <br /> * 1-Dichloroethene <br /> 10 N D <br /> cis-1,2-Dichloroethene 10 N D <br /> trans-1,2-Dichloroethene 10 N D <br /> 1,2-DichIoro propane 10 N D <br /> cis-1,3-Dichloropropene 10 N D <br /> trans-1,3-Dichloropropene 10 N D <br /> Methylene chloride 100 N D <br /> 1,1,2,2-Tetrachloroethane 10 N D <br /> Tetrachloroethene 10 N D <br /> 1,1,1-Trichloroethane 10 N D <br /> 1,1,2-Trichloroethane 10 N D <br /> Trichloroethene 10 N D <br /> Trichlorofluoromethane 10 N D <br /> Vinyl chloride 20 N D <br /> Analytes reported as N D were not present above the stated limit of detection Because matrix effects and/or other factors <br /> required additional sample dilution,detection limits for this sample have been raised <br /> SEQUOIA ANALYTICAL, #1271 <br /> 0gnature on File <br /> Alan B Kemp <br /> Project Manager <br /> 7030493 MPD <8> <br />