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SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM • Concord, California 94520 <br /> (510) 686-9600 • FAX (510) 686-9689 <br /> Kaprealian Engineering, Inc Client Project ID Unocal 2835 Navy Drive Stockton Sampled Apr 29, 1992 <br /> 2401 Stanwell Drive Matrix Descript Soil Received Apr 30 1992 <br /> Concord, CA 94520 Analysis Method EPA 3550/8015 Extracted Apr 30, 1992 <br /> Attention Mardo Kaprealian, P E First Sample # 204-1289 Analyzed Apr 30, 1992 <br /> Reported May 1 1992 <br /> TOTAL PETROLEUM FUEL HYDROCARBONS (EPA 8015) <br /> Sample Sample High B P <br /> Number Description Hydrocarbons <br /> mg/kg <br /> (ppm) <br /> 204-1289 Comp D 160 <br /> 204-1290 Comp E 210 <br /> 204-1291 Comp F 410 <br /> 204-1292 Comp G 410 <br /> Method Detection Limits 1 0 <br /> High Boiling Point Hydrocarbons are quantitated against a diesel fuel standard <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL <br /> 4 <br /> Scott A Chieffo <br /> Project Manager 2G41289KEI <z� <br />