This column summarizes three recent developments in the environmental regulatory arena. First, revisions to the Risk Management Program Rule address confidential business information, classification of regulated processes, and additional mandatory and optional data elements. Second, the Persistent, Bioaccumulative, and Toxic (PBT) Chemicals Proposed Rule looks at lowering the reporting thresholds of certain PBTs and adding other PBT chemicals to the Emergency Planning and Community Right to Know Act (EPCRA) Toxic Release Inventory (TRI) reporting requirements. Finally, the Environmental Protection Agency's (EPA's) Common Sense Initiative (CSI) charter expired in February 1999 and its impact represents a core move toward common sense at all levels of the regulatory process.