4 The Record is a publication from ALL4’s team that takes an in-depth look at technical and regulatory topics.
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
ALL4 has been tracking the Clean Water Act (CWA) Hazardous Substances Facility Response Plan (FRP) rule since the proposed rule was published in 2022. The final rule was published last year, and even before the 2024 election, the U.S. Environmental […]
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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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What’s in the Proposed 2025 Ambient Air Monitoring Network Plan for Kentucky?
Posted: June 4th, 2025
Each year, the Kentucky Energy and Environment Cabinet releases its annual plan detailing how ambient air quality will be monitored across the Commonwealth. The Proposed 2025 Ambient Air Monitoring Network Plan is now available for public review and comment until […]
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Stay Current: CEDRI and ERT Updates You Need to Know!
Posted: May 29th, 2025
Stay up-to-date with the latest changes to the United States Environmental Protection Agency (U.S. EPA) Compliance and Emissions Data Reporting Interface (CEDRI) and the Electronic Reporting Tool (ERT). The following updates are important to keep in […]
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Heat Illness and Injury Prevention Rulemaking
Posted: May 29th, 2025
Among all hazardous weather conditions in the United States (U.S.), heat accounts for the most death. According to Centers for Disease Control (CDC) and Prevention and California Code of Regulations (CCR), Title 8, Section 3396, excessive heat can lead to […]
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Change in NPDES Construction General Permit
Posted: May 22nd, 2025
Under the United States Clean Water Act (CWA), construction stormwater discharges into waters of the U.S. (WOTUS) must be authorized by a state or U.S. Environmental Protection Agency (U.S. EPA) National Pollutant Discharge Elimination System (NPDES) permit. U.S. EPA Construction […]
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