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This Alternative Work Practice (AWP) for the Asbestos National Emission Standards for Hazardous Air Pollutants (NESHAP), addresses the replacement of asbestos cement (A/C) water pipes. Water, including drinking water, waste water and storm water; is handled by a system of underground pipes. Existing water pipes of all types run beneath and beside major roadways, beneath buildings and overlap other utilities (e.g., gas, electricity, cable); their replacement can potentially be problematic, especially in high-density residential, industrial and urban areas. As the infrastructure of municipalities age, utilities serving the population need to replace deteriorated water pipes. Existing water pipes can be made of various components such as clay, iron, polyvinyl chloride (PVC), concrete, and A/C. These A/C pipes are potentially subject to regulation under the NESHAP for Asbestos when replaced. In this final action, the EPA presents the results of our evaluation of the alternative work practice request for A/C pipe replacement subject to the Asbestos NESHAP.