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REC61VED <br /> SEQUOIA ANALYTICAL APR � � � 8 <br /> 1900 Bates Avenue • Suite LM • Concord, California 94520 APR <br /> KALTM �93 <br /> (510) 686-9600 • FAX(510)686-9689 <br /> PEW"T/SERVICE <br /> Alton 11 Geosclence Client Project I'D: Former Mobil 1WM/30-013610 Sampled: n 22, 1993 <br /> 5870 Stoneridge Drive, Suite 6 Sample Descript: Water, AW-7 Received: .tan 25, 1993 <br /> Pleasanton, CA 94588 Analysis Method: EPA 8270 Extracted: Jan 26, 1993 <br /> Attention: Stephan Rosen Lab Number: 301-0598 Analyzed: Jan 27, 1993 <br /> Reported: Jan 29, 1993 <br /> SEMI-VOLATILE ORGANICS by GC/MS (EPA 8270) <br /> Analyte Detection Limit Sample Results <br /> Ugn Ug/L <br /> 2,4-Dinitrotoluene.............................................................. 2.0 ..................................... N.D. <br /> 2,6-Dinitrotoluene.............................................................. 2.0 ..................................... N.D. <br /> Di-N-octyl phthalate.......................................................... 2.0 ..................................... N.D. <br /> Fluoranthene..................................................................... 2.0 ........I............................ N.D. <br /> Fluorene.......................................................... ................. 2.0 ..................................... <br /> Hexachlorobenzene.......................................................... 2.0 .......................I............. N.D. <br /> Hexachlorobutadlene. ..................................................... 2.0 ............I........................ N.D. <br /> Hexachlorocyclopentadiene............................................. 2.0 ..................................... N.D. <br /> Hexachloroethane............................................................. 2.0 .......I............................. N.D. <br /> indeno(1,2,3-cd)pyrene.................................................... 2.0 ..................................... N.D. <br /> 2��tnaphthaiene........................................................ 2.0 ..................................... N.D. <br /> 2-Methylphend.................................................................. 2.0 ..................................... N.D. <br /> 4-Methylphenol.................................................................. 2.0 ..................................... N.D. <br /> Naphthalene...................................................................... 2.0 ..................................... N.D. <br /> 2-Nitroaniline..................................................................... 10 ..................................... N.D. <br /> 3-Nitroanillne..................................................................... 10 ........................... N.D. <br /> 4-Nitroanfline..................................................................... 10 .............. ................. N-D. <br /> Nitrobenzene............................._....................................... 2.0 ..................................... N.D. <br /> 2-Nitrophenol.................................................................... 2.0 ..................................... N.D. <br /> 4-Nitrophenoi.................................................................... 10 ..................................... N.D. <br /> N-Nitrosodiphenylamine................................................... 2.0 ...................I................. N.D. <br /> N-Nitroso-di-N-propylamine............................................. 2.0 ..................................... N.D. <br /> Pentachlorophenol............................................................ 10 ............................I........ N.D. <br /> Phenanthrene.................................................................... 2.0 ..................................... N.D. <br /> Pyrem............................................................................. 2.0 ..................................... KD. <br /> 1,2,4-TdcNorobenzens..................................................... 2.0 ..................................... N.D. <br /> 2,4,5-TricNorophend........................................................ 10 ..................................... N.D. <br /> 2,4.&Trich1or0phend........................................................ 2.0 ..................................... N.D. <br /> AnaNw sported as N.D.were not prsssnt above 1M stated limit of detection. <br /> SEQUOIA ANALYTICAL <br /> A ChieAo <br /> Project Manager Page 2 of 2 3010597ALT <92P. <br />