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Y <br /> j SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue a Suite LM • Concord, California 94520 <br /> (415) 686-9600 0 FAX (415) 686-9689 <br /> prealian Engineering, Inc Client Project ID Unocal,7303 Pacific Ave,Stockton Sampled 10/11-12/90 <br /> P O Box 996 Matrix Descript Soil Received Oct 15, 1990, <br /> Benicia, CA 94510 Analysis Method- SM 503 D&E (Gravimetric) Extracted Oct 17, 1990 <br /> Attention Mardo Kaprealian, P E First Sample# 010-0432 Analyzed Oct 19, 1990 <br /> Reported Oct 29, 1990 <br /> TOTAL RECOVERABLE PETROLEUM OIL <br /> Sample Sample Oil& Grease <br /> Number Description mg/kg <br /> (ppm) <br /> 010-0432 MW1-(10) 76 <br /> 010-0433 MW1-(15) N D <br /> 010-0434 MW1-(25 5) N D <br /> 010-0435 MW1-(35 5) N D <br /> 010-0436 MWi-(55 5) N D <br /> 010-0437 MW1-(59) N D <br /> Detection Limits: 30 <br /> Analytes reported as H D were not present above the stated limit of detection <br /> *E()UOIA ANALYTICAL <br /> J a R Malerstein <br /> Project Manager 100432 KEI <5> <br />