Regulation & law · 22/10/2013
EPA Approves District of Columbia Air Quality Implementation Plan
The Environmental Protection Agency (EPA) has approved two State Implementation Plan (SIP) revisions submitted by the District of Columbia to address the 2008 lead National Ambient Air Quality Standards (NAAQS) and State Board requirements, as mandated by the Clean Air Act (CAA).
Original source language: Federal Register — All DocumentsOpen original release →