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j 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#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 Kaprealian, P E First Sample# 211-0484 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 /> 211-0484 EB3-(5) N D <br /> 211-0485 EB3-(10) N D <br /> 211-0486 EB3-(15) N D <br /> 211-0487 EB3-(20) N D <br /> 211-0488 EB3-(25) N D <br /> 211-0489 EB3-(30) N D <br /> 211-0490 EB3-(35) N D <br /> 211-0491 EB3-(40) N D <br /> 211-0492 EB3-(45) N D <br /> 211-0493 EB3-(50) N D <br /> Detection Limits 30 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL <br /> co A hieffo <br /> Project Manager 2110502 KEi <14> <br />