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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 /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> �IPDS Services Client Project ID Unocal#0123, 1034 Central Ave,Tracy Sampled Sep 3, 1997 <br /> 2401 Stanwell Dr, Ste 300 Sample Descript Water, U-3 Received Sep 3, 1997 <br /> Concord, CA 94520 Analysis Method EPA 5030/8010 Analyzed Sep 15, 1997 <br /> Attention Jarrel Crider Lab Number 709-0189 Reported Sep 25, 1997 <br /> HALOGENATED VOLATILE ORGANICS (EPA 8010) <br /> Analyte Detection Limit Sample Results <br /> Ng/L Ng/L <br /> Bromodichloromethane 050 N D <br /> Bromoform 050 N D <br /> Bromomethane 1 0 N D <br /> Carbon tetrachloride 050 N D <br /> Chlorobenzene 050 N D <br /> Chloroethane 1 0 N D <br /> 2-Chloroethylvinyl ether 1 0 N D <br /> Chloroform 050 N D <br /> Chloromethane 1 0 N D <br /> Dibromochloromethane 050 N D <br /> 1,3-Dichlorobenzene 050 N D <br /> 1,4-Dichlorobenzene 050 N D <br /> 1,2-Dichlorobenzene 050 N D <br /> 1,1-Dichloroethane 050 N D <br /> 1,2-Dichloroethane 050 N D <br /> 1-Dichloroethene 050 N D <br /> _s-1,2-Dichloroethene 050 N D <br /> trans-1,2-Dichloroethene 050 N D <br /> 1,2-Dichloropropane 050 N D <br /> cis-1,3-Dichloropropene 050 N D <br /> trans-1,3-Dichloropropene 050 N D <br /> Methylene chloride 50 N D <br /> 1,1,2,2-Tetrachloroethane 050 N D <br /> e rac roethene 050 48 <br /> -I nc oroet ane 696 <br /> 1,1,2-Trichloroethane 050 N D <br /> Trichloroethene 050 N D <br /> Trichlorofluoromethane 050 N D <br /> Vinyl chloride 1 0 N D <br /> Surrogates Control Limit % % Recovery <br /> Dlbromoddluoromethane 50 150 89 <br /> 4-Bromofluorobenzene 50 150 97 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1271 <br /> 0nature on File <br /> Alan B hemp <br /> Project Manager <br /> 7090187 MPD <7> <br />