Energy & environment · 15/06/1994Updated: 10/16/2026 · 1 min read
United States Environmental Protection Agency Proposes Full Approval of Wisconsin's 1990 Base Year Ozone Emission Inventory
Summary
The United States Environmental Protection Agency (USEPA) proposes full approval of Wisconsin's 1990 base year ozone emission inventory as a revision to the Wisconsin State Implementation Plan (SIP) for O 3.