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Sequoia 6Bo Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94599 (510) 988 9600 FAX(510)986 9673 <br /> Analytical 819 Sinker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> 10uchstone Developments Client Project 1D Chevron #9-4183 Sampled Apr 26, 1996 <br /> 1 Kingston Ave Sample Descript Soil, DOSP-5(A-D) Received Apr 26, 1996 <br /> Oakland, CA 94611 Analysis Method EPA 8270 Extracted Apr 29, 1996 <br /> Attention Robert Mallory Lab Number 604-1873 Analyzed Apr 29, 1996 <br /> Reported Apr 30, 1996 <br /> QC Batch Number SP0429968270EXA <br /> Instrument ID GC/MS-1 <br /> SEMI-VOLATILE ORGANICS by GC/MS (EPA 8270) <br /> Analyte Detection Limit Sample Results <br /> Ng/kg Ng/kg <br /> Hexachlorobenzene 1,000 N D <br /> Hexachlorobutadiene 1,000 N D <br /> Hexachlorocyclopentadiene 1,000 N D <br /> Hexachloroethane 1,000 N D <br /> Indeno(1,2,3-cd)pyrene 1,000 N D <br /> Isophorone 1,000 N D <br /> 2- et y nap t a ene 1,000 2,000 <br /> 2- et y p eno 1,000 <br /> 4-Methylphenol 1,000 N D <br /> Naphthalene 1,000 1,100 <br /> 2 ltroani ine 5,000 <br /> 3-Nitroaniline 5,000 N D <br /> 4-Nitroaniline 5,000 N D <br /> Otrobenzene 1,000 N D <br /> -Nitrophenol 1,000 N D <br /> 4-Nitrophenol 5,000 N D <br /> N-Nitrosodimethylamine 1,000 N D <br /> N-Nitrosodiphenylamine 1,000 N D <br /> N-Nitroso-di-N-propylamine 1,000 N D <br /> Pentachlorophenol 5,000 N D <br /> Phenanthrene 1,000 N D <br /> Phenol 1,000 N D <br /> Pyrene 1,000 N D <br /> 1,2,4-Trichlorobenzene 1,000 N D <br /> 2,4,5-Trichlorophenol 5,000 N D <br /> 2,4,6-Trichlorophenol 1,000 N D ' <br /> Surrogates Control Limit % % Recovery <br /> 2-Fluorophenol 25 121 53 <br /> Phenol-d6 24 113 64 <br /> Nitrobenzene-d5 23 120 78 <br /> 2-Fluorobiphenyl 30 115 120* <br /> 2,4,6-Tribromophenol 19 122 86 <br /> 4-Terphenyl-d 14 18 137 121 <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, #1271 Please Nate <br /> *Surrogate recovery outside control limits due to sample dilution <br /> Kevin Van Slambrook <br /> Project Manager Page 2 of 2 <br /> 6041871 TUD <14z <br />