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a) <br /> Sequoia 680 Chesapeake Drwe 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 /> 14WAnalytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> touchstone Developments Client Project ID Chevron #9-4183 Sampled Apr 26, 1996 <br /> 81 Kingston Ave Sample Descript Sod, WOX-8-21 0 Received Apr 26, 1996 <br /> Oakland, CA 94611 Analysis Method EPA 8270 Extracted May 1, 1996 <br /> Attention Robert Mallory Lab Number 604-1948 Analyzed May 2, 1996 <br /> Reported May 6, 1996 <br /> QC Batch Number SP04299682700(A <br /> Instrument ID GC/MS-1 <br /> SEMI-VOLATILE ORGANICS by GC/MS (EPA 8270) <br /> Analyte Detection Limit Sample Results <br /> Ng/kg jig/kg <br /> Hexachlorobenzene 100 N D <br /> Hexachlorobutadiene 100 N D <br /> Hexachlorocyclopentadiene 100 N D <br /> H exachl oro ethane 100 N D <br /> Indeno(1,2,3-cd)pyre ne 100 N D <br /> Isophorone 100 N D <br /> 2-Methylnaphthalene 100 N D <br /> 2-Methylphenol 100 N D <br /> 4-Methylphenol 100 N D <br /> Naphthalene 100 N D <br /> 2-Nitroandine 500 N D <br /> 3-Nitroaniline 500 N D <br /> a4-Nitroaniline 500 N D <br /> - itrobenzene 100 N D <br /> 2-Nitrophenol 100 N D <br /> 4-Nitrophenol 500 N D <br /> N-Nitrosodimethylamine 100 N D <br /> N-Nitrosodiphenylamine 100 N D <br /> N-Nitroso-di-N-propylamine 100 N D <br /> Pentachlorophenol 500 N D <br /> Phenanthrene 100 N D <br /> Phenol 100 <br /> ND <br /> Pyrene 100 N D <br /> 1,2,4-Trichlorobenzene 100 N D <br /> 2,4,5-Trichlorophenol 500 N D <br /> 2,4,6-Trichlorophenol 100 N D <br /> Surrogates Control Limit% % Recovery <br /> 2-Fluorophenol 25 121 75 <br /> Phenol-d6 24 113 82 <br /> Nitrobenzene-d5 23 120 90 <br /> 2-Fluorobiphenyl 30 115 97 <br /> 2,4,6-Tribromophenol 19 122 81 <br /> 4-Terphenyl-d 14 18 137 110 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1271 <br /> Kevin Van Slambrook <br /> Project Manager Page 2 of 2 <br /> 6041944 TUD <10> <br /> r� <br />