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SEQUOIA Analytical 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 /> � 1 <br /> 7050040 soil S-1, Mobil at 30 55 <br /> Hammer Road in Stockton, CA <br /> . f <br /> k <br /> r <br /> d <br /> i <br /> NOTE:.% Analysis was performed using EPA extraction method 3554 with f <br /> ' Trichlorotriflouroethane as solvent, and gravimetric determination <br /> by standard methods 503E. <br /> SEQUOIA ANALYTICAL LABORATORY <br /> 4 <br /> Arthur G. Burton a <br /> Laboratory Director <br /> mpr <br /> t <br />