ALL4’s Texas 2022 Look Ahead
Posted: January 18th, 2022
Is it just us, or did time fly? While we ended 2021 with COVID still around us, it’s unclear if we are heading into 2022 or 2020-too… I am hoping for a year of lifting mandates and a return to […]
Read article
2022 Look Ahead – Part 3
Posted: January 18th, 2022
The 2022 Look Ahead is a multi-part series consisting of 20 articles to celebrate ALL4’s 20th anniversary. View Part 1 View Part 2 Air Toxics Look Ahead // Amy Marshall There are many things going on in the world of […]
Read article
2022 Look Ahead – Part 2
Posted: January 12th, 2022
The 2022 Look Ahead is a multi-part series consisting of 20 articles to celebrate ALL4’s 20th anniversary. View Part 1 Toxics Release Inventory (TRI) – How to Prepare for 2022 Recordkeeping and Reporting // Sheryl Watkins Since its creation in […]
Read article
The Latest News on Air Quality Requirements in Oregon
Posted: December 6th, 2021
ALL4 has been keeping track of various air quality requirements in Oregon over the past few years. We provide an update on the state’s air quality modeling, regional haze, and greenhouse gas (GHG) requirements below. Air Quality Modeling The Oregon […]
Read article
Updates to Guidance on Ozone and Fine Particulate Matter Permit Modeling Issued by U.S. EPA
Posted: October 8th, 2021
U.S. EPA’s Office of Air Quality Planning and Standards (OAQPS) published the “Revised DRAFT Guidance for Ozone and Fine Particulate Matter Permit Modeling” (Revised Draft Guidance) on September 20, 2021. The Revised Draft Guidance replaces the initial “DRAFT Guidance for Ozone […]
Read article
Proposed Changes to New Hampshire Air Toxics Rules and Potential Ramifications to Stakeholders
Posted: September 22nd, 2021
ALL4 is pleased to continue providing updates regarding changes to New Hampshire air toxics rules and the impacts to stakeholders responsible for compliance. In April 2021, ALL4 presented, “Changes to the New Hampshire Air Toxics Rule: What Could it Mean […]
Read article
Ambient Monitoring Networks and Environmental Justice
Posted: August 5th, 2021
In May 2021 the Air & Waste Management Association (A&WMA) virtually presented the Air Quality Measurements Conference. Amongst the many discussions around the advancements in measurements of air quality, the most common themes revolved around the advancement of citizen-science air […]
Read article
U.S. EPA to Reconsider PM2.5 NAAQS
Posted: July 23rd, 2021
On June 10, 2021 U.S. EPA announced that it would reconsider the previous administration’s decision to retain the particulate matter less than 2.5 microns (PM2.5) National Ambient Air Quality Standard (NAAQS). The previous administration made its final decision to retain […]
Read article
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 […]
Read article
The Fifth Revision of the TCEQ’s Penalty Policy Finalized
Posted: February 24th, 2021
Policy Finalized The Texas Commission on Environmental Quality (TCEQ) recently finalized their Penalty Policy which will result in higher fees and more violation events for industry. These changes were motivated by recent incidents that have caused significant public and environmental […]
Read article