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I <br /> SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM a Concord, California 94520 <br /> (415) 686-9600 0 FAX (415) 686-9689 <br /> Kaprealian Engineering, Inc Client Project ID Unocal,73M Pacific Ave,Stockton Sampled Mar 26, 1991 <br /> P O Box 996 Matrix Descnpt Water Received Mar 27, 1991 <br /> Benicia, CA 94510 Analysis Method SM 5520 B&F (Gravimetric) Extracted Mar 29, 1991 <br /> Attention Mardo Kaprealian, P E First Sample# 103-0899 D Analyzed Apr 5, 1991 <br /> Reported Apr 10, 1991 <br /> TOTAL RECOVERABLE PETROLEUM OIL <br /> Sample Sample Oil&Grease <br /> Number Description mg/L <br /> (ppm) <br /> 103-0899 D Mw--i N D <br /> Detection Limits so <br /> Analytes reported as N D were not present above the stated limit of detection <br /> OEQUOIA ANALYTICAL <br /> Belinda C Vega <br /> Laboratory Director ID"99 KEI <e> <br />