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J!54) SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM • Concord, California 94520 <br /> (510) 686-9600 FAX (510) 686-9689 <br /> rKapreahan Engineering, Inc Client Project jD Unocal#5421,7303 Pacific Ave, Stockton Sampled Nov 10, 1992 <br /> 2401 Stanwell Drive, Suite 400 Matrix Descript Soil Received Nov 11, 1992 <br /> Concord, CA 94520 Analysis Method SM 5520 E&F (Gravimetric) Extracted Nov 17, 1992 <br /> Attention Mardo Kapreallan, P E First Sample # 211-0514 Analyzed Nov 20, 1992 <br /> Reported Nov 25, 1992 <br /> TOTAL RECOVERABLE PETROLEUM OIL <br /> Sample Sample Oil & Grease <br /> Number Description mg/kg <br /> (ppm) <br /> 211-0514 EB7-(10) N D <br /> 211-0515 EB7-(20) N D <br /> 211-0516 EB7-(25) N D <br /> Detection Limits 30 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQU A ANALYTICAL <br /> Scott A hleffo <br /> Project Manager 2110502 KEI <17> <br />