Energy & environment · 21/09/1994Updated: 10/18/2026 · 1 min read
USEPA Approves Ohio's Ozone State Implementation Plan Revision
Summary
The Environmental Protection Agency (EPA) has approved Ohio's revised ozone State Implementation Plan (SIP) and redesignated three counties - Preble, Columbiana, and Jefferson - to meet the national ozone standards, following a direct final rule without prior public comment period.