4 The record articles

4 The Record is a publication from ALL4’s team that takes an in-depth look at technical and regulatory topics.


U.S. EPA Releases Updated Version (21112) of the AERMOD Modeling System

Posted: May 24th, 2021

On May 11, 2021, the United States Environmental Protection Agency (U.S. EPA) released an updated version of the American Meteorological Society/Environmental Protection Agency Regulatory Model (AERMOD) Modeling System.  The update, dated 21112, includes documentation, executables, and source code for the […]

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CAERS Update for Georgia: HAP Emissions Reporting

Posted: May 19th, 2021

The United States Environmental Protection Agency (U.S. EPA) and Georgia Environmental Protection Division (GEPD) hosted a “HAPs Reporting in CAERS Training” webinar on Tuesday, April 20th to provide Georgia facilities the opportunity to learn more about reporting hazardous air pollutant […]

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Meet Jenny Brown

Posted: May 19th, 2021

What drew you to consulting as a career? Honestly as I look back on my career, it probably isn’t as much of what drew me to consulting as what has kept me in consulting. Right out of college the initial […]

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Meet Claire Corta

Posted: May 3rd, 2021

Claire Corta // Raleigh Office Director // Raleigh, NC Office As someone growing an office, what technical skillsets are you looking for in potential candidates? We have had success with Chemical Engineering and Environmental Engineering students in taking what they […]

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Recap of the CAPCA 2021 Spring Regulatory Update

Posted: April 29th, 2021

The Carolinas Air Pollution Control Association (CAPCA) hosted a virtual workshop on April 8, 2021 that included regulatory updates from the United States Environmental Protection Agency (U.S. EPA), South Carolina Department of Health and Environmental Control (SC DHEC), and the […]

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Meet Stewart McCollam

Posted: April 27th, 2021

Stewart McCollam // Technical Manager // Louisville, KY Office The Kentucky team onboarded to ALL4 as part of a 4Q2020 acquisition, what impact has that had on you and your clients? Being part of an organization that is nationally recognized […]

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