U.S. EPA Releases Significant Update to AP-42 Section 2.4 for Solid Waste Landfills
Posted: August 2025
In May 2025, the United States Environmental Protection Agency (U.S. EPA) released a significant update to AP-42 Section 2.4 for Municipal Solid Waste Landfills and the associated LandGEM model for estimating air emissions from solid waste landfills. AP-42 Section 2.4 […]
Read MoreOptimizing Air Emissions Calculations with Digital Solutions: Identifying Air Emissions Templates
Posted: August 2025
What is an Air Emissions “Template”? Templates are used to group similar emissions calculations within digital solution platforms. The way templates are handled varies depending on the software used, but templates are a common concept and approach across software systems. […]
Read MoreSpain Sets New All-Time Record in Renewable Energies
Posted: July 2025
2023 was the most renewable year in Spain’s history, recording an all-time high of over 135,000 GWh. The current situation of renewable energies in Spain continues to improve, with special emphasis on wind and photovoltaic energy. In 2018, the European […]
Read MoreWhat is the Texas Environmental, Health, and Safety Audit Privilege Act?
Posted: June 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 […]
Read MoreUpdate on the California Climate Disclosure Laws
Posted: June 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 […]
Read MoreNew Draft Tennessee Multi-Sector General Permit for Industrial Stormwater
Posted: April 2025
The Tennessee Multi-Sector General Permit (TMSP) is intended to authorize industrial stormwater discharges to waters of the State of Tennessee from industrial facilities. The TMSP expires on June 30, 2025 and the Tennessee Department of Environment and Conservation (TDEC) has […]
Read MorePower Sector Resources
Posted: April 2025
The staff at ALL4 possesses extensive experience in the power sector, particularly in relation to coal and natural gas-fired power plants, offshore wind power, and the full gamut of renewable energy projects. We cultivate enduring relationships with our clients in […]
Read MoreNorth Carolina Takes Decisive Action in Regulating PFAS in Wastewater
Posted: April 2025
On September 11, 2024, the Water Quality Committee of North Carolina Department of Environmental Quality’s (NCDEQ) Environmental Management Commission (EMC) approved a motion to establish per- and polyfluoroalkyl substances (PFAS) monitoring for “every industrial and National Pollutant Discharge Elimination System […]
Read MoreWashington State Disclosure of Greenhouse Gas Emissions SB-6092 2023-2024
Posted: April 2025
The Washington Senate Bill 6092 (SB 6092), known as the Washington Climate Corporate Data Accountability Act, introduces greenhouse gas (GHG) disclosure requirements for large companies operating within the state. The bill would mandate businesses with over $1 million in annual […]
Read MoreUnlocking the Versatility of Power BI Desktop
Posted: March 2025
In the digital age, businesses have a need to manage vast amounts of data from various sources. It is important to use this data to gain insights to assist strategic decision-making and support organizational growth. Achieving these goals […]
Read More