4 The Record is a publication from ALL4’s team that takes an in-depth look at technical and regulatory topics.
Changes to U.S. EPA PFAS Drinking Water Standards Under the Trump Administration
Posted: July 9th, 2025
In April 2024, the United States Environmental Protection Agency (U.S. EPA) finalized Maximum Contaminant Levels (MCL) for five per- and polyfluoroalkyl substances (PFAS): perfluorooctanoic acid (PFOA), perfluorooctanesulfonic acid (PFOS), perfluorohexanesulfonic acid (PFHxS), perfluorononanoic acid (PFNA), and hexafluoropropylene oxide dimer acid […]
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What is the Texas Environmental, Health, and Safety Audit Privilege Act?
Posted: June 26th, 2025
Enacted by the Texas Legislature and administered by the Texas Commission on Environmental Quality (TCEQ), the Texas Environmental, Health, and Safety Audit Privilege Act—the Audit Act for short—has been in effect since 1997, with the purpose […]
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Understanding New York’s Shift from Dialogue to Enforcement of CLCPA Conformity in Air Permitting
Posted: June 25th, 2025
Updates to the Enforcement of CLCPA Conformity New York State’s Department of Environmental Conservation (NYSDEC) and its Division of Air Resources (DAR) are strengthening their enforcement of greenhouse gas (GHG) emissions targets in the Empire State with recent updates to […]
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2025 Fire Code and Hazardous Material Reporting
Posted: June 25th, 2025
As industrial and commercial facilities continue to handle a wide range of hazardous materials, understanding and complying with fire code requirements is more critical than ever. This article highlights key takeaways from a recent presentation — featuring ALL4 consultants Eli […]
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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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