Air Quality

Recap of the CAPCA 2026 Spring Technical Workshop and Forum

Posted: April 30th, 2026

Author: Emily Mandel This year’s Spring Carolinas Air Pollution Control Association (CAPCA) technical workshop and forum included a wide-range of technical topics of interest to those located in the Carolinas and beyond. In addition to regulatory update highlights presented by […]

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Understanding the Final PEPO NESHAP: Key Changes and Implications

Posted: April 7th, 2026

Author: Andrew Kelley & Dayana Flores Granda The U.S. Environmental Protection Agency (U.S. EPA) has finalized updates to the Polyether Polyols (PEPO) Production National Emission Standards for Hazardous Air Pollutants (NESHAP), 40 CFR Part 63, Subpart PPP. PEPO are chemical […]

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SCAQMD Rules 1401 and 1401.1 – Why Do They Matter?

Posted: April 7th, 2026

Author: Michael McHale As discussed in our previous 4 the Record Article on SCAQMD Permitting 101, air quality permitting is often the critical path for facilities looking to implement capital projects in the South Coast Air Quality Management District’s (SCAQMD’s […]

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Colorado Finalizes Landfill Methane Reduction Rule

Posted: March 5th, 2026

Author: Brian Taylor On December 18, 2025, the Colorado Air Quality Control Commission (AQCC) approved the Colorado Department of Public Health and Environment (CDPHE), Air Pollution Control Division’s (Division) proposed rule establishing requirements for methane emissions reductions from municipal solid […]

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Colorado Public Protections From Toxic Air Contaminants

Posted: March 5th, 2026

Author: Clayton Queen Colorado is implementing big changes for facilities emitting toxic air contaminants (TAC). In June 2022, the Colorado State Assembly passed HB22-1244 (Public Protections From Toxic Air Contaminants), which directed Colorado Public Health & Environment (CDPHE) to implement […]

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U.S. EPA Finalizes Combustion Turbine NSPS Revisions

Posted: January 27th, 2026

Author: Caleb Fetner Less than one week after being signed by U.S. Environmental Protection Agency (U.S. EPA) Administrator Lee Zeldin, the Combustion Turbine New Source Performance Standards (NSPS) revisions were published in the Federal Register on January 15, 2026 and […]

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2026 Look Ahead

Posted: January 14th, 2026

2026 Look Ahead Intro // Colin McCall Happy New Year to all of our readers. We are looking forward to another year of work and camaraderie with our colleagues, clients, and partners. In keeping with tradition, we use our January […]

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2026 Air Quality Look Ahead

Posted: January 14th, 2026

Author: Amy Marshall While 2025 brought a new administration and changes to how the United States Environmental Protection Agency (U.S. EPA) approaches air quality regulation and policy, we expect to see even more air quality regulatory activity in 2026. The […]

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