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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9640 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916) 921 0100 <br /> �,,,� <br /> Mettler-Ryan Client Project 10 UNOCAL #5421-Stockton Sampled Apr 21, 1998 <br /> 747 Sierra Court, Suite J Sample Descnpt Soil, OWS-4 Received Apr 21, 1998 <br /> Dublin, CA 94568 Analysis Method EPA 8240 Extracted Apr 24, 1998 <br /> Attention Clyde Galantine Lab Number 804-1420 Analyzed Apr 24, 1998 <br /> Reported May 6, 1998 <br /> VOLATILE ORGANICS by GC/MS (EPA 8240) <br /> Analyte Detection Limit Sample Results <br /> Ng/k9 !1g/k9 <br /> Vinyl acetate 100 N D <br /> Vinyl chloride 100 N ❑ <br /> Total Xylenes 100 N D <br /> Surrogates Control Limit % % Recovery <br /> 1,2-Dichloroethane-d4 50 150 89 <br /> Toluene-d8 50 150 115 <br /> 4-Bromofluorobenzene 50 150 81 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> S QUOTA ANALYTICAL, #1271 <br /> P _f <br /> Laborat ry Dir for Page 2 of 2 <br /> 8041418 GET <8> <br />