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Water, including drinking water, waste water and storm water; is handled by a system of pipes which deliver water to residences; commercial, institutional and industrial users; transfer waste water from users to wastewater treatment plants; and carry untreated storm water to streams and lakes. 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. Even replacement in suburban and rural areas can require careful navigation beneath roadways and other major structures. 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 asbestos cement (A/C). These A/C pipes are potentially subject to regulation under the National Emission Standards for Hazardous Air Pollutants for Asbestos (Asbestos NESHAP) when replaced. The Asbestos NESHAP sets work practice standards designed to minimize releases of asbestos to protect human health. The Agency received a request to approve a new alternative work practice (AWP) for the replacement of A/C pipes that is done using a trenchless technique called close tolerance pipe slurrification (CTPS). EPA issued a notice soliciting comment on the CTPS AWP on April 25, 2018 (83 FR 18042). In this final notice, the EPA presents the results of the evaluation of the alternative work practice.