Proposed Amendments to Rules for the Cleveland 2015 Ozone Non-Attainment Areas
Posted: February 18th, 2025
Currently in Public Notice, the Ohio Environmental Protection Agency (Ohio EPA), Division of Air Pollution Control (DAPC) is working to amend three rules in the Ohio Administrative Code (OAC) due to the change of the Cleveland ozone nonattainment area from […]
Read article
Proposed Revisions to North Carolina’s Permit Review Timeline Rule
Posted: February 14th, 2025
On February 4, 2025, the North Carolina Division of Air Quality (NC DAQ) hosted a public hearing to receive comments on the proposed Permit Review Timeline Rule revisions. NC DAQ has proposed revisions to their construction and operating permit rules […]
Read article
Looking Ahead – Fenceline Monitoring
Posted: January 28th, 2025
In 2024, the U.S. Environmental Protection Agency (U.S. EPA) finalized new fenceline monitoring requirements associated with amendments to Standards of Performance for New Stationary Sources (NSPS) and National Emission Standards for Hazardous Air Pollutants (NESHAP) associated […]
Read article
Looking Ahead – Air Toxics Regulatory Activity
Posted: January 21st, 2025
The last few years have seen a flurry of revisions to air toxics regulations, due primarily to a court case referred to as “LEAN” where the court determined that the U.S. Environmental Protection Agency (U.S. EPA) should have set more […]
Read article
2025 Look Ahead
Posted: January 15th, 2025
Part 1 2025 Look Ahead // Colin McCall Happy New Year to our colleagues, clients, and partners as we enter 2025. Each January, we are excited to outline observations and insights that will help with proactive planning around environmental, health, […]
Read article
Impacts of Lowered PM2.5 NAAQS to Take Shape in 2025 and other NAAQS Related Updates
Posted: January 13th, 2025
On February 7, 2024, the United States Environmental Protection Agency (U.S. EPA) finalized the particulate matter (PM) National Ambient Air Quality Standards (NAAQS) reconsideration process and lowered the annual PM less than 2.5 microns (PM2.5) NAAQS from 12 micrograms per […]
Read article
“Here We Go Again” – 2025 New Source Review Look Ahead
Posted: January 13th, 2025
It’s January 6, 2025 and exactly eight years since the beginning of the first Trump administration. In order to look ahead, I first needed to “look back” to January 2017 to see what my colleague, John Egan, wrote in a […]
Read article
U.S. EPA Releases TANKS 5.1
Posted: December 18th, 2024
On October 9, 2024, United States Environmental Protection Agency (U.S. EPA) released version 5.1 of their TANKS software in conjunction with updates to Section 7.1 – Organic Liquid Storage Tanks of the AP-42 Compilation of Air Pollutant Emission Factors. TANKS […]
Read article
U.S. EPA Finalizes Revisions to the Secondary NAAQS
Posted: December 18th, 2024
On December 10, 2024, the United States Environmental Protection Agency (U.S. EPA) issued its finalized revisions to the secondary National Ambient Air Quality Standards (NAAQS). The relatively minor proposed changes, first proposed in April 2024, only affect the secondary standards […]
Read article
U.S. EPA Releases Proposed Updates to Stationary Combustion Turbines NSPS
Posted: December 4th, 2024
On November 22, 2024, U.S. Environmental Protection Agency (EPA) proposed the first of what is expected to be three new or revised rules related to the emissions of criteria pollutants, air toxics, and greenhouse gasses (GHG) for stationary combustion turbines. […]
Read article