4 The Record is a publication from ALL4’s team that takes an in-depth look at technical and regulatory topics.
U.S. EPA Finalizes Changes to Rules on Reclassification of Major Sources
Posted: September 11th, 2024
The Clean Air Act (CAA) defines a major source of hazardous air pollutant (HAP) emissions as one that has the potential to emit (PTE) 10 tons per year (tpy) or more of any single HAP or 25 tpy or more […]
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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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Draft Post-Construction Stormwater Manual
Posted: September 4th, 2024
On January 28, 2023, the Pennsylvania Department of Environmental Protection (PADEP) released the draft Pennsylvania Post-Construction Stormwater Management (PCSM) Manual (Draft). The Draft is an update of the December 2006 Pennsylvania (PA) stormwater BMP Manual released in. This update provides […]
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Chemical Sector Update – September 2024
Posted: September 3rd, 2024
The second half of 2024 is progressing with a steady drumbeat of air quality regulatory actions and court proceedings related to the chemical industry. This article discusses updates to relevant litigation, summarizes developments in recently promulgated air quality rules, and […]
Read articleU.S. EPA’s Updated 2024 Interim Guidance on the Destruction and Disposal of PFAS
Posted: August 29th, 2024
On April 8, 2024, the U.S. Environmental Protection Agency (U.S. EPA) issued an updated interim guidance for public comment on the destruction and disposal of per and polyfluoroalkyl substances (PFAS) and PFAS-containing materials. U.S. EPA published the first edition […]
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Proposed Amendments to Air Toxics Standards for NESHAP EEE – Hazardous Waste Combustors
Posted: August 28th, 2024
The U.S. Environmental Protection Agency (U.S. EPA) proposed revisions to the National Emission Standards for Hazardous Air Pollutants (NESHAP) from Hazardous Waste Combustors (HWC) (40 CFR Part 63, Subpart EEE) in the Federal Register on July 3, 2024. The HWC […]
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Pennsylvania “SPEED” Permitting
Posted: August 27th, 2024
Businesses in Pennsylvania have long lamented about the time it takes to receive permits from the Pennsylvania Department of Environmental Protection (PADEP). Over the years, different administrations have attempted to address this issue. For example, several years ago PADEP launched […]
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Louisiana Carbon Capture and Storage Updates
Posted: August 22nd, 2024
Before closing the 2024 regular session, the Louisiana Legislature passed five Carbon Capture & Storage (CCS) house bills (HB): HB 966, HB 492, HB 937, HB 516, and HB 934, though HB 934 was subsequently vetoed by Governor Jeff Landry. […]
Read articleDecoding the New PFAS TSCA Reporting Rule: Navigating Compliance and Industry Impact
Posted: August 21st, 2024
Update: On September 4, 2024, U.S. EPA announced a direct final rule to delay the reporting period for this rule due to budgetary constraints. The original reporting window was scheduled to begin on November 12, 2024 and last through May […]
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An Introduction to ECHO
Posted: August 20th, 2024
The Enforcement and Compliance History Online (ECHO) is an online tool created by the United States Environmental Protection Agency (U.S. EPA) to view regulatory compliance and enforcement information about regulated facilities. ECHO provides a user-friendly way to view recent regulations, […]
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