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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510)988-9600 FAX(510)988-9673 <br /> a- ) Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)92.1-9600 FAX(916)921 0100 <br /> 1455 McDowell 61vd North Ste D Petaluma CA 94954 (707) 79Z 1865 FAX(707)792 0342 <br /> Gettler Ryan[Geostrategles Client Prod ID Unocal 5421, 140162 02 Sampled 04/16/98 <br /> 6747 Sierra Court Suite J Sample Descript UWS-1(comp) Received 04/17/98 <br /> Dublin, CA 94568 Matrix SOLID Extracted 04/22/98 <br /> Analysis Method EPA 8270 Analyzed 04/22/98 <br /> Attention Clyde Galantine Lab Number 9804C43-03 Reported 04f30J98 <br /> OC Batch Number MSO416988270EXC <br /> Instrument ID F4 <br /> Analyte Detection Limit Sample Results <br /> ug/Kg ug/Kg <br /> Fluorene 250 N D <br /> Hexachlorobenzene 250 N D <br /> Hexachlorobutadlene 250 N D <br /> Hexachlorocyclopentadiene 500 N D <br /> Hexachloroethane 250 N D <br /> Indeno(1,2,3-ed)pyrene 250 N D <br /> Isophorone 250 N D <br /> 2-Methylnaphthalene 250 N D <br /> 2-Methylphenol 250 N D <br /> 4-Methylphenol 250 N D <br /> Naphthalene 250 N D <br /> 2-Nitroaniline 500 N D <br /> 3-Nitroanillne 500 N D <br /> 4-Nitroaniline 500 N D <br /> jfttrobenzene 250 N D <br /> Nitrophenol 250 N D <br /> 4-Nitrophenol 500 N D <br /> N-Nitrosodiphenylamme 250 N D <br /> N-Nitroso-di-n-propylamine 250 N D <br /> Pentachlorophenol 500 N D <br /> Phenanthrene 250 N D <br /> Phenol 250 N D <br /> Pyrene 250 N D <br /> 1,2,4-Trichlorobenzene 250 N D <br /> 2,4,5-Trichlorophenol 500 N D <br /> 2,4,6-Trichlorophenof 250 N D <br /> Surrogates Control Limits % % Recovery <br /> 2-Fluorophenol 25 121 66 <br /> Phenol-d5 24 113 73 <br /> Nitrobenzene-d5 23 120 66 <br /> 2-Fluorobiphenyl 30 115 62 <br /> 2,4,6-Tribromophenol 19 122 93 <br /> p-Terphenyl-d 14 18 137 84 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - EtAP 01210 <br /> AMC- egory <br /> sect Manager Page B <br />