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Sequoia 680 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 /> hstone Development Client Project 1D Chevron #9-2033 Sampled Sep 9, 1996 <br /> Box 2554 Sample Descript Sod, UOSP A Received Sep 9, 1996 <br /> Santa Rosa, CA 95405 Analysis Method EPA 8270 Extracted Sep 10, 1996 <br /> Attention Jeff Monroe Lab Number 609-0441 Analyzed Sep 10, 1996 <br /> Reported Sep 12, 1996 <br /> OC Batch Number MS0910968270EXA <br /> Instrument ID E4 <br /> SEMI-VOLATILE ORGANICS by GC/MS (EPA 8270) <br /> Analyte Detection Limit Sample Results <br /> pg/kg Ng/kg <br /> Hexachlorobenzene 250 N D <br /> Hexachlorobutadiene 250 N D <br /> Hexachlorocyclopentad iene 250 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-Nitroaniline 500 N D <br /> 3-Nitroaniline 500 N D <br /> 0 roaniline 500 N D <br /> benzene 250 N D <br /> 2-Nitrophenol 250 N D <br /> 4-Nitrophenol 500 N D <br /> N-Nitrosodiphenylamine 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-Trichlorophenol 250 N D <br /> Surrogates Control Limit % % Recovery <br /> 2-Fluorophenol 25 121 59 <br /> Phenol-d5 24 113 74 <br /> Nitrobenzene-d5 23 120 57 <br /> 2-Fluorobiphenyl 30 115 70 <br /> 2,4,6-Tribromophenol 19 122 64 <br /> 4-Terphenyl-d14 18 137 74 <br /> Analytes reported as N D were not present above the stated limit of detection Because matrix effects and/or other factors <br /> required additional sample dilution,detection limits for this sample have been raised <br /> SEQUOIA ANALYTICAL, #1210 <br /> *"�� (� &'wj� <br /> Melissa A Brewer <br /> Client Services Representative Page 2 of 2 <br /> 6090441 TOU a8> <br />