Search Results for keywords:"sulfur dioxide"

The Environmental Protection Agency (EPA) proposes to approve Idaho's updated regional haze State Implementation Plan (SIP) for the period from 2018 to 2028. Idaho's plan aims to make progress toward improving visibility caused by air pollution in national parks and wilderness areas. The plan includes specific strategies and rules for sources of air pollution, such as factories, to reduce emissions of harmful substances like nitrogen oxides and sulfur dioxide. The EPA found Idaho’s plan to be consistent with federal requirements and intends to incorporate the plan's measures into the state’s legally enforceable air quality rules.

The Environmental Protection Agency (EPA) has finalized a rule to update the Federal Implementation Plan (FIP) for sulfur dioxide emissions from four sources in Billings and Laurel, Montana. This rule removes the previous allowance for exceeding emission limits during malfunctions, startups, and shutdowns, as it did not align with the Clean Air Act. The EPA conducted an environmental justice analysis and found no significant disparities in pollution burden around the affected facilities. This rule will take effect on February 18, 2025, and is intended to have a neutral to positive impact on local air quality.