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Sequoia 680 L"--peake Drive Redwood City CA 9406 (650)364-9600 FAX(650) 364-9Z33 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)9B8-9600 FAX(925)988-9673 <br /> Analytical 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)79Z-034Z <br /> Pacific Environmental Group Client Project ID Unocal 0123, Tracy, CA Sampled Oct 6, 1098 <br />' 11315 Sunrise Gold Circle, Ste M Sample Descript Method Blank Received Oct 7, 1998, <br /> Rancho Cordova, CA 95742 Analysis Method EPA 3550/8270 Extracted Oct 8, 1998 <br /> Attention Mike Mitchener Lab Number BLK100898 Analyzed Oct 12, 1998 <br /> Reported Oct 20, 1998 <br /> SEMI VOLATILE ORGANICS by GUMS (EPA 8270) <br /> Analyte Reporting Limit Sample Results <br /> Nglkg Ng/kg <br />' Di-n-octyl phthalate 250 N D <br /> Fluoranthene 250 N D <br /> Fluorene 250 N D <br /> ' Hexachlorobenzene 250 N D <br /> Hexachlorobutadiene 250 N D <br /> Hexachlorocyclopentadiene 500 N D <br /> Hexachloroethane 250 N D <br /> ' Indeno(1,2,3-cd)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-Nitroanlline 500 N D <br /> 3-Nitroaniline 500 N D <br /> 4-Nitroaniline 500 N D <br /> Nitrobenzene 250 N D <br /> 2-Nltrophenol 250 N D <br /> ' 4-Nltrophenol 500 N D <br /> N-Nltrosodiphenylamine 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-Tnchlorobenzene 250 N D <br /> 2,4,5-Trichlorophenol 500 N D <br /> 2,4,6-Trichlorophenol 250 N D <br /> Surrogates Control limits, % % Recovery <br /> 2-Fluorophenol 25-121 87 <br /> Phenol-d6 24-113 79 <br /> Nitrobenzene-d5 23-120 86 <br /> ' 2-Fluorobiphenyl 30-115 90 <br /> 2,4,6-Tribromophenol 19-122 84 <br /> 4-Terphenyl-d14 18-137 87 <br /> ' Analytes reported as N D were not detected at or above the reporting limit <br /> SEQ OIA ANAL CAL, ELAP#1210 <br /> Klnda C Sch eider <br /> Project Manager/Sacramento Laboratory Page 2 of 2 <br /> ' S810079 PES <6> <br />