U.S. EPA Has Revised its Standards for New and Modified Volatile Organic Liquid Storage Tanks
Posted: November 13th, 2024
On October 15, 2024, the U.S. Environmental Protection Agency (U.S. EPA) published final amendments to the Standards of Performance for New Stationary Sources, or New Source Performance Standards (NSPS), for Volatile Organic Liquid (VOL) Storage Vessels (Including Petroleum Liquid Storage […]
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CISWI Federal Plan Finalized
Posted: October 16th, 2024
On September 16, 2024, the U.S. Environmental Protection Agency (U.S. EPA) signed a final rule containing the Federal Plan requirements at 40 CFR Part 62, Subpart IIIa to implement the emissions guidelines for existing facilities under the commercial and industrial […]
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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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