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SEQUOIA AnalY tical Laboratory <br /> 2549 Middlefield Road <br /> Redwood City, CA 94063 • (415) 364-9222 <br /> Kaprealian Engineering, Inc. Date Sampled: 04-30-87 <br /> 535 Main Street, Suite 309 Date Received: 05-04-87 <br /> Martinez, CA 94553 Date Reported: 05-26-87 <br /> Attn: Mardo Kaprealian, P.E. <br /> President <br /> Sample Sample Detection Gravimetric Waste Oil <br /> Number Description Limit as Petroleum Oil <br /> Ppm Ppm <br /> 7050039 Soil A-1, Mobil at 30 < 30 <br /> March Road in Stockton, CA <br /> NOTE: Analysis was performed using EPA extraction method 3550 with <br /> Trichlorotriflouroethane as solvent, and gravimetric determination <br /> by standard methods 503E. <br /> SEQUOIA ANALYTICAL LABORATORY <br /> Arthur G. Burton <br /> Laboratory Director <br /> mpr <br />