Summary

Changes how the Clean Air Act treats air monitoring data from wildfires and state wildfire‑risk reduction actions. It expands the legal definition of an “exceptional event,” adds an explicit list of things that are excluded from that definition, and creates a new defined term for state‑authorized actions to reduce wildfire fuel (like prescribed burns). The bill also updates the petition and demonstration process so states can seek exclusion for monitoring data tied to wildfire or fuel‑reduction actions, requires regional modeling or analysis for multistate events or multistate petitions, directs EPA to publish and monthly‑update petition status on a public website within 12 months, clarifies how excluded data may be omitted from various regulatory uses (designations, attainment determinations, SIP reviews, preconstruction permitting demonstrations), and repeals a prior paragraph in that Clean Air Act subsection.

• Expands and clarifies the definition of "exceptional event" to cover wildfires and related state mitigation actions.
• Creates a new legal term for state‑approved wildfire risk mitigation actions (e.g., prescribed fire).
• Allows petitions to exclude monitoring data from both wildfires and wildfire‑risk mitigation activities.
• Requires regional modeling or analysis for multistate events or when multiple states petition over the same event.
• Directs EPA to create a public website and update it monthly to report petition status within 12 months of enactment.
• Specifies regulatory uses (designations, attainment determinations, SIP reviews, preconstruction permitting demonstrations, etc.) from which excluded data may be omitted.
• Adds an interpretive principle that mitigation actions can reduce wildfire size and frequency.
• Reorganizes and reletters existing statutory subclauses and repeals one prior paragraph in the cited subsection.