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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PFAS Now in Ambient Air and a Vapor Intrusion Risk?
Posted: April 4th, 2024
Vapor Intrusion (VI) is the process in which contaminants in subsurface soil or water migrate upwards into the ambient air. This poses a risk to indoor air quality in buildings which have been constructed over contaminated sites. The most common […]
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D.C. Circuit Vacates U.S. EPA’s SSM SIP Call
Posted: March 21st, 2024
On March 1, 2024, the U.S. Court of Appeals for the District of Columbia (D.C.) Circuit decided 2 to 1 to vacate the United States Environmental Protection Agency’s (U.S. EPA’s) State Implementation Plan Call with respect to certain startup, shutdown, […]
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Enforcement Alert – BWON
Posted: March 19th, 2024
In February 2024, the United States Environmental Protection Agency (U.S. EPA) Office of Civil Enforcement issued a long expected Enforcement Alert targeting facilities subject to 40 CFR Part 61 Subpart FF – National Emission Standard for Benzene Waste Operations (BWON). […]
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Now Boarding: Mississippi Facilities to CAERS Version 5
Posted: March 12th, 2024
The United States Environmental Protection Agency (U.S. EPA) Combined Air Emissions Reporting System (CAERS) is officially being rolled out to 11 Mississippi pilot facilities in 2024! U.S. EPA hosted a training in December 2023 with Mississippi Department of Environmental Quality […]
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Lime Manufacturing NESHAP Supplemental Proposal Issued
Posted: March 6th, 2024
A supplemental notice of proposed rulemaking to the 40 CFR Part 63, Subpart AAAAA (National Emission Standards for Hazardous Air Pollutants for Lime Manufacturing Plants [Lime Manufacturing NESHAP]) was published in the February 9, 2024 Federal Register. The U.S. Environmental […]
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Revisions to the Risk Management Program Safer Communities by Chemical Accident Prevention Requirements
Posted: March 6th, 2024
Introduction On February 27, 2024, the United States Environmental Protection Agency (U.S. EPA) signed final Safer Communities by Chemical Accident Prevention (SCCAP) Risk Management Program (RMP) regulations. The amendments include changes and enhancements to accident prevention program requirements, emergency preparedness […]
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Proposed Changes to Project Emissions Accounting (PEA) Regulations
Posted: March 4th, 2024
The U.S. Environmental Protection Agency (EPA) signed proposed changes to the 2020 Project Emissions Accounting (PEA) provisions in the Prevention of Significant Deterioration (PSD) and Nonattainment New Source Review (NNSR) regulations on February 22, 2024. Collectively, the PSD and NNSR […]
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Annual PM2.5 NAAQS Lowered!
Posted: February 8th, 2024
On February 7, 2024, the United States Environmental Protection Agency (U.S. EPA) made the long-awaited announcement that the annual particulate matter less than 2.5 microns (PM2.5) National Ambient Air Quality Standard (NAAQS) will be lowered from 12 micrograms per cubic […]
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