4 The Record is a publication from ALL4’s team that takes an in-depth look at technical and regulatory topics.
The Clock is Ticking to Get Ethylene Oxide CEMS Installed & Certified
Posted: May 8th, 2024
The U.S. Environmental Protection Agency (U.S. EPA) finalized revisions to 40 CFR Part 63, Subpart O – Ethylene Oxide Emissions Standards for Sterilization Facilities (Subpart O) following its residual risk and technology review (RTR). The final rule was published in […]
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U.S. EPA has Finalized Updates to the Mercury and Air Toxics Standards for Power Plants
Posted: May 7th, 2024
On April 24, 2024, the U.S. Environmental Protection Agency (U.S. EPA) signed final revisions to the National Emission Standards for Hazardous Air Pollutants (NESHAP) for Coal- and Oil-Fired Electric Utility Steam Generating Units (EGUs), also known as the Mercury and […]
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U.S. EPA Updates to Emissions Standards for Gasoline Distribution Terminals
Posted: May 1st, 2024
The Clean Air Act requires the United States Environmental Protection Agency (U.S. EPA) to review standards promulgated under 40 Code of Federal Regulations (CFR) Parts 60 and 63 every eight years and revise them if necessary. On February 29, 2024, […]
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Recap of Agency Updates from the 2024 Spring CAPCA Technical Workshop and Forum
Posted: May 1st, 2024
The 2024 Spring Carolinas Air Pollution Control Association (CAPCA) technical workshop and forum hosted in Asheville, NC was packed full of regulatory updates given the recent activity in the environmental space. The regulatory update from the United States Environmental Protection […]
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Batteries: Best Practices for Safe Use, Storage, and Disposal
Posted: April 30th, 2024
Battery Primer: Batteries and their uses have evolved to become an even bigger part of our daily life. They are particularly useful if not essential to our daily communication, productivity, and even our commute. What is a battery? The common definition […]
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Final Revisions to SOCMI NESHAPs and NSPS and the NESHAPs for Group I and II Polymers and Resins
Posted: April 24th, 2024
On April 9, 2024, the U.S. Environmental Protection Agency (U.S. EPA) released a pre-publication version of final revisions to several National Emission Standards for Hazardous Air Pollutants (NESHAP) and New Source Performance Standards (NSPS) applicable to facilities in the Synthetic […]
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Update on Protocol Gas Certification for use in Source Measurements
Posted: April 24th, 2024
On March 11, 2024, the U.S. Environmental Protection Agency (U.S. EPA) issued a memorandum addressing “Accepted Use of Protocol Gases that are Recognized for Regulatory Use.” The memo was authored by staff members from both the Office of Air Quality […]
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CISWI and OSWI Federal Plans Proposed Consent Decree
Posted: April 23rd, 2024
On April 5, 2024, the U.S. Environmental Protection Agency (U.S. EPA) published a notice of a proposed consent decree regarding U.S. EPA’s failure to issue final Federal Implementation Plans (FIPs) to implement the emissions guidelines for existing facilities under the […]
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U.S. EPA Proposes Revisions to the Secondary NAAQS
Posted: April 17th, 2024
On April 11, 2024 the United States Environmental Protection Agency (U.S. EPA) issued its proposed revisions to the secondary National Ambient Air Quality Standards (NAAQS). The relatively minor proposed changes, published in the Federal Register on April 15, 2024, only […]
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Finalized Amendments to NESHAP for Commercial Sterilization Facilities
Posted: April 17th, 2024
The U.S. Environmental Protection Agency (U.S. EPA) has finalized revisions to 40 CFR Part 63, Subpart O – Ethylene Oxide Emissions Standards for Sterilization Facilities (Subpart O) following its residual risk and technology review (RTR). Amendments were initially proposed on […]
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