PlainBillCongress, translated.Legislation. Context. Public interest.Committee on Environment and Public Works. Hearings held. Hearings printed: S.Hrg. 114-47.
Congressional Research Service
Version 00 · Introduced in Senate · Mar 3, 2015
Commonsense Legislative Exceptional Events Reforms Act of 2015
This bill amends the Clean Air Act to revise the requirements for regulations that govern the review and handling of air quality monitoring data influenced by exceptional events. (The Environmental Protection Agency [EPA] may exclude monitored exceedances of the National Ambient Air Quality Standards from consideration when designating an area as nonattainment, redesignating an area as nonattainment, or reclassifying an existing nonattainment area to a higher classification if a state demonstrates that an exceptional event caused the exceedances.)
The criteria used to determine if an exceptional event was demonstrated must be specific in order to minimize the discretion of the EPA in approving or disapproving the demonstration.
Showing the opening paragraphs of the official summary.
The EPA must make a determination within 90 days after the submission of a petition by a state of an exceptional event demonstration. The demonstration is approved if the EPA does not make a determination by that deadline.
A determination must be based on a preponderance of the evidence and give substantial deference to the findings of the state exceptional event demonstration. An appeal process for reviewing a disapproval of a demonstration is established.
People & committees
Sen. Flake, Jeff [R-AZ] · R–AZ
Legislative record
A procedural vote is different from passage. Passage in one chamber does not establish enactment. Explore the glossary.
Committee on Environment and Public Works. Hearings held. Hearings printed: S.Hrg. 114-47.
Read twice and referred to the Committee on Environment and Public Works. (Sponsor introductory remarks on measure: CR S1253-1254)
Introduced in Senate
Primary sources
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Source last updated: Sep 8, 2026. Consult Congress.gov for the current record.
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