article thumbnail

EPA Will Reconsider the Ozone NAAQS — What Is An Adequate Margin of Safety, Anyway?

Law and Environment

On Friday, EPA announced that it was reconsidering its 2020 decision to leave the National Ambient Air Quality Standards for ozone unchanged. However, EPA stated that it: will reconsider the decision to retain the ozone NAAQS in a manner that adheres to rigorous standards of scientific integrity. Still whistling in the wind , I fear.

Ozone 130
article thumbnail

Improving EPA’s Latest Ozone Transport Rule

Acoel

The agency’s air quality modeling indicates that most areas would receive an ozone reduction of less than 0.1 These air quality impacts are minimal compared with the major ozone reductions resulting from the 1998 SIP Call, which resulted in more than 80,000 megawatts of coal capacity being retrofitted with SCRs. ppb by 2025.

Ozone 40
Insiders

Sign Up for our Newsletter

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

article thumbnail

The State of the Air in 2024? Not Great

Union of Concerned Scientists

I moved to Merced in 2015 to study for my PhD, and I found a place I could call home. The American Lung Association’s State of the Air report measures three of the major types of pollutants in the San Joaquin Valley: long-term particle matter, short-term particle matter, and ozone. Ozone plays a dual role in our atmosphere.

2024 257
article thumbnail

DEP Declares 57 Major Industrial Plants Meet Air Quality RACT Rules; Hearing Set For April 12

PA Environment Daily

The Department of Environmental Protection published notice in the February 24 PA Bulletin inviting comments on its determination that 57 major industrial facilities across the state meet Air Quality RACT II and RACT III requirements and the 2015 national ozone pollution standard.

Ozone 81
article thumbnail

EPA’s Denial of Louisiana’s Revised SIP

The Energy Law Blog

On December 7, 2023, the Environmental Protection Agency (EPA) disapproved the state implementation plan (SIP) revisions for the Baton Rouge ozone nonattainment area that Louisiana set forth in response to EPA’s 2015 SIP Call rule. To comply with the 2015 SIP Call rule, Louisiana had proposed revising its SIP by removing LAC 33:III.2201.C.8,

2015 52
article thumbnail

Public Comment Period Opens as Ohio EPA Issues Draft Revisions to Reasonably Available Control Technology (“RACT”) Requirements for Control of VOC and NOx Emissions

Vorys Law

Ohio EPA has proposed rules that will require additional Volatile Organic Compound (VOC) and Nitrogen Oxide (NOx) emission controls for certain manufacturing and industrial operations located in the Cincinnati and Cleveland 2015 ozone nonattainment areas. Like VOCs, NOx is a precursor compound which can form ozone.

Ozone 40
article thumbnail

Air Regulators Tackle Trucking at Southern California Warehouses

Clean Energy Law

The rule includes a sunset date, whereby the WPCO requirement expires after both an EPA finding that all SCAQMD air basins have attained the federal 2015 ozone standard of 70 parts per billion (ppb) and a CARB finding that all SCAQMD air basins have attained the state ozone standard of 70 ppb. Further Actions.