Energy & environment · 15/04/2024Updated: 10/16/2026 · 1 min read
Environmental Protection Agency Proposes Revision to Secondary Sulfur Dioxide Standard
Summary
The Environmental Protection Agency proposes to revise the existing secondary sulfur dioxide standard to an annual average, with a level within the range from 10 to 15 parts per billion, and retain existing standards for nitrogen oxides and particulate matter.
Original source language: Federal Register — Environmental Protection AgencyOpen original release →