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` SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City CA 94063 <br /> . (415) 364 9600 • FAX (415) 364 9233 <br /> Kapreahan Engineering Inc Client Project ID Unocal, Stockton,7303 Pacdlc Ave Sampled Nov 17, 1989 <br /> PO Box 913 Matrix Descript Soil Received Nov 20, 1989 <br /> Benicia CA 94510 Analysis Method EPA 5030/8015/BD20 Analyzed Nov 20, 1989 <br /> Attention Mardo Kapreallan,P E Fust Sample 1l+ 911-2646 Reported Nov 21. 1989 <br /> TOTAL. PETROLEUM FUEL HYDROCARBONS with BTEX DISTINCTION (EPA 8015/8020) <br /> Sample Sample Low/Medium B.P. Ethyl <br /> Number Description Hydrocarbons Benzene Toluene Benzene Xylenes <br /> mg/kg mg/kg mg/kg m9/kg mg/kg <br /> (ppm) (ppm) (ppm) (ppm) (ppm) <br /> 911-2646 Al N D N D N D N D N D <br /> 911-2547 A2 98 16 44 12 79 <br /> 911-264B 81 N D N D N D N D N D <br /> 911-2649 82 6,500 70 770 230 1,400 <br /> Detection Limits 10 005 01 0 1 0 1 <br /> Lo,A to Medium Boilmg Point Hydrocarbons are quantitated against a gasoline standard <br /> Analytes reported as N D were not present above the stated limit of detection <br /> 40E000IA ANALYTICAL <br /> b—t�k-'o <br /> Belinda C Vega / <br /> Project Manager 9112646KE1 c2> <br />