Updates on the Lowered PM2.5 NAAQS
Posted: September 10th, 2024
It’s been four months since the lowered annual particulate matter less than 2.5 microns (PM2.5) National Ambient Air Quality Standard (NAAQS) became effective on May 6, 2024, and seven months since my last 4TR article on the topic. I thought […]
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New Jersey Environmental Justice Impact Statement Guidance
Posted: July 31st, 2024
On April 17, 2023, the New Jersey Department of Environmental Protection (NJDEP) published the Environmental Justice (EJ) Rule under New Jersey Administrative Code (N.J.A.C.) 7:1C. The EJ Rule is applicable to any major source facility, or other type of facility […]
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U.S. EPA Finalizes Benzene Fenceline Monitoring for Coke Oven Facilities
Posted: July 17th, 2024
In August of 2023, ALL4 covered the proposed monitoring amendments to the National Emissions Standards for Hazardous Air Pollutants (NESHAP) for Coke Ovens: Pushing, Quenching, and Battery Stacks (PQBS) and Coke Oven Batteries (COB) at 40 CFR Part 63, Subparts […]
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Recent SCOTUS Decisions of Interest
Posted: July 10th, 2024
Generally, congress makes laws (also known as statutes), the agencies like the U.S. Environmental Protection Agency (EPA) write regulations based on those laws, and the courts judge whether the regulation or implementation of the regulation is within the scope of […]
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Philadelphia’s Air Toxics Regulations in Effect as of January 1, 2024
Posted: June 25th, 2024
The City of Philadelphia’s Air Management Services’ (AMS) new Air Management Regulation (AMR) VI Toxics Rule and health risk screening workbook went into effect January 1, 2024. The AMR VI rule had been finalized at an Air Pollution Control Board […]
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ALL4 Workshop on BAAQMD Expectations for Continuous Monitoring Systems (CMS) and Source Testing
Posted: June 19th, 2024
ALL4 recently hosted a workshop in the Bay Area Air Quality Management District (BAAQMD) to discuss the regulatory requirements for continuous monitoring systems (CMS) and source testing programs completed within the BAAQMD. CMS operated in the BAAQMD must comply with […]
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Final Amendments to Integrated Iron and Steel Manufacturing MACT Standards
Posted: June 11th, 2024
The Administrator of the U.S. Environmental Protection Agency (U.S. EPA) signed the final version of amended 40 CFR Part 63, Subpart FFFFF – National Emission Standards for Hazardous Air Pollutants (NESHAP) from Integrated Iron and Steel Manufacturing Facilities (Subpart FFFFF) […]
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More PM2.5 NAAQS Related Updates
Posted: May 30th, 2024
There have been more guidance updates and rule making in the last month that will impact both air quality modeling and the designation process for the lowered annual particulate matter less than 2.5 microns (PM2.5) National Ambient Air Quality Standard […]
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Massachusetts Department of Environmental Protection Finalizes Regulations to Incorporate Cumulative Impact Analysis Into Air Quality Permitting
Posted: May 29th, 2024
On March 29, 2024, the Massachusetts Department of Environmental Protection (MassDEP) finalized regulations that require a cumulative impact analysis (CIA) when a facility is seeking a comprehensive plan approval (CPA) air quality permit. The CIA rulemaking applies to CPA applications […]
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ACE has been Repealed – What Does That Mean for New and Existing Fossil Fuel-Fired Electric Generating Units?
Posted: May 15th, 2024
On May 9, 2024, the U.S. Environmental Protection Agency (U.S. EPA) published final regulations addressing greenhouse gas (GHG) emissions from fossil fuel-fired electric generating units (EGUs or EGs). The rulemaking includes changes to the current Standards of Performance [or New […]
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