Regulation & law · 17/12/1998Updated: 10/17/2026 · 1 min read
EPA Approves New Hampshire's Air Quality Implementation Plan, Lifts Ozone Standard Requirements
Summary
The US Environmental Protection Agency (EPA) has approved New Hampshire's air quality implementation plan, effectively lifting the one-hour ozone standard requirements for the state and other nearby areas, following a review of the state's motor vehicle inspection and maintenance (I/M) program
Original source language: Federal Register — All DocumentsOpen original release →