4 The Record is a publication from ALL4’s team that takes an in-depth look at technical and regulatory topics.
U.S. EPA Proposes to Repeal Certain Provisions of the Mercury and Air Toxics Standards for Power Plants
Posted: June 19th, 2025
On June 11, 2025, the United States Environmental Protection Agency (U.S. EPA) proposed to repeal certain provisions of the 2024 amendments to the National Emission Standards for Hazardous Air Pollutants (NESHAP) for Coal- and Oil-Fired Electric Utility Steam Generating Units […]
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U.S. EPA Proposes to Repeal GHG Standards for Fossil Fuel-Fired Power Plants
Posted: June 19th, 2025
On June 11, 2025, in response to President Trump’s energy-related Executive Orders, the United States Environmental Protection Agency (U.S. EPA) signed a proposal to repeal all greenhouse gas (GHG) emissions standards for fossil fuel-fired power plants. U.S. EPA also proposes […]
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Update on the California Climate Disclosure Laws
Posted: June 19th, 2025
The California Air Resources Board (CARB) hosted a virtual workshop, which was open to the public, to discuss the state’s climate disclosure laws on May 29, 2025. The two climate disclosure laws are the Corporate Climate Data Accountability Act (commonly […]
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Best Practices for Importing Data into Digital Tools
Posted: June 19th, 2025
The ability to import and export bulk data in digital tools is key for administrators to be able to add, modify, and extract multiple records in the tool quickly and efficiently. Having and adhering to best practices when using this […]
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So You Have To Do A Stack Test…
Posted: June 12th, 2025
This article will briefly describe some best practices to determine particulate matter (PM) emissions using United States Environmental Protection Agency (U.S. EPA) Methods 5 and 202 for filterable particulate matter (FPM) and condensable particulate matter (CPM), respectively. The best practices […]
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How To Develop A Regulatory Compliant QA/QC Program For Your CMS – Part 1
Posted: June 11th, 2025
During a regulatory inspection or audit you may be asked to provide a Quality Assurance/Quality Control (QA/QC) Plan for your Continuous Monitoring System (CMS). You provide the QA/QC Plan, and the inspector/auditor determines that the QA/QC Plan is robust enough […]
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CWA Hazardous Substances FRP: Implementation Delay Loading
Posted: June 11th, 2025
September 10, 2025 Update: The Spring 2025 regulatory agenda was released in early September, including a short update on the Clean Water Act (CWA) Hazardous Substances Facility Response Plan (FRP) rule. The entry did not give many details but confirmed […]
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Carolinas Regulatory Updates
Posted: June 5th, 2025
The 2025 Spring Carolinas Air Pollution Control Association (CAPCA) technical workshop and forum, hosted in Asheville, NC, kicked off with two workshops, one focused on emissions factors and tools for calculating emissions, and the other focused on the intersection of […]
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OSHA’s Site-Specific Targeting Program
Posted: June 5th, 2025
On April 8, 2025, the Occupational Safety and Health Administration (OSHA) released directive CPL 02-01-067, updating its site-specific-targeting (SST) program. The SST is the agency’s primary initiative for targeting non-construction workplaces with 20 or more employees for inspections based on […]
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Mississippi AERF Process Changes
Posted: June 4th, 2025
In April 2025, the Mississippi Department of Environmental Quality (MDEQ) announced updates to the annual emissions reporting form (AERF) submittal process. In accordance with 11 Miss. Admin. Code Pt. 2, R,6.6, Title V Program sources must submit a completed reporting […]
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