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KLEINFELDER <br /> 2.2 ANALYSIS OF PROJECTED WASTE DECOMPOSITION AND MIGRATION <br /> Asbestos and asbestos/cement pipe are relatively insoluble materials and are not subject to <br /> decomposition. Therefore, migration of asbestos fibers into the ground water (rather than <br /> dissolved constituents released from asbestos waste) is the primary source of concern in an <br /> unlined asbestos landfill. In general, soil has a significant natural filtering capacity and can <br /> effectively filter small particles such as asbestos fibers. According to an EPA published <br /> document titled "Asbestos. Waste Management Guidance", landfilling asbestos waste is <br /> recommended as an environmentally sound isolation method because asbestos fibers are <br /> virtually immobile in soil. Therefore, having the natural soil filter between the asbestos fibers <br /> placed in the landfill and ground water should provide an effective barrier to migration. <br /> 2.3 CONSTITUENT OF CONCERN FOR CLOSURE <br /> Based on the data presented in this chapter, asbestos is the only constituent causing concern, <br /> and it is not of concern for ground water. Therefore, the objective of closure and postclosure <br /> activities will focus on mitigating the presence of asbestos in surface soil and surface water. <br /> CR14-92-12 Page 6 of 39 24-220109-1709 <br /> Copyright 1992 Kleinfelder, Inc. <br />