Environmental Federalism and Federal-State Working Relationships -- Responses to Intergovernmental Working Relationships in the 1990s -- Concepts of Federalism -- NEPPS and the REG 8 Directive -- A Typology of Working Relationships -- Implementing Environmental Laws -- Defining Implementation and Measuring Performance -- Implementation as a Game of Strategy -- Implementation as a Story -- Implementation and Refocusing Events -- Implementation Energizers -- An Implementation Framework -- Dynamics of the Model -- Conclusions about Implementation -- Study Design and Rationale -- Unintended Consequences, Policy Retreat, and Refocusing Events in Asbestos Policy -- History of Asbestos -- Health Risks Associated with Asbestos -- The Government Responds to Asbestos -- Legal and Media Attention to Asbestos in the 1980s -- Congress Develops an Asbestos Law -- EPA Develops Asbestos Regulations -- The Early Years of Implementing AHERA -- Implementing AHERA Today -- Refocusing Events: Libby, Montana, the World Trade Center, and Litigation -- A View from the States -- Conclusions about the Asbestos Program -- The Survival of a Nonregulatory Radon Program -- Radon and Known Health Risks -- A Perfect Triggering Event -- The Indoor Radon Abatement Act, 1988 -- Early and Persistent Challenges to Implementing IRAA -- Radon and Risk Communication -- Regulatory and Nonregulatory Programs Collide: Radon in Drinking Water -- Funding State Programs and Leveraging with Partnerships -- Perceptions of State Radon Officials -- Conclusions about the Radon Program