Chemical and Petrochemical Industry Proposed Updates to EMACT, MON, OLD MACT, and RSR
Posted: May 4th, 2023
What Rules are Changing? On April 27, 2023, the United States Environmental Protection Agency (U.S. EPA) proposed amendments as a result of reconsideration of the following National Emission Standards for Hazardous Air Pollutants (NESHAP): Generic Maximum […]
Read article
Fuel Flow Monitoring Systems Part 2: Potential Challenges and Best Practices
Posted: April 3rd, 2023
In Part 1, we looked at a few common types of fuel meters, how they measure flow, how they can be applied, and how they can impact a facility’s operations. Data from fuel flow meters are fed into regulatory reports, […]
Read article
Fuel Flow Monitoring Systems Part 1: Common Types and Uses
Posted: March 30th, 2023
Fuel flow monitoring systems measure the amount of fuel consumed by a process and are typically used to measure gaseous or liquid fuels. There are many types of fuel monitors used in practice – differential pressure, coriolis, and ultrasonic are […]
Read articleWhat Do You Need to Know About Starting a Stack Testing Program?
Posted: March 13th, 2023
When your facility finds they need to do a stack test on a piece of equipment, there will be a number of questions thrown at you. Being proactive will go a long way toward having a smooth and positive experience. […]
Read article
Understanding CMS Data Validation
Posted: February 15th, 2023
Many facilities that are subject to the requirements of a Title V Operating Permit must operate and maintain continuous monitoring systems (CMS) to demonstrate ongoing compliance with various state and Federal requirements in the permit. Managing the quality and evaluating […]
Read article
New Source Review (NSR) – What to Expect in 2023
Posted: January 26th, 2023
If you have not already noticed, NSR is a fairly common air quality topic in ALL4’s annual Look Ahead series of articles and in our 4 The Record blog posts, and with good reason. The NSR air permit program, consisting […]
Read article
ALL4’s Texas 2023 Look Ahead
Posted: January 25th, 2023
The new year is upon us, and ALL4 is looking forward to the changes and challenges it will bring. Whether the concerns are related to air, water, waste, or health and safety, we are here to assist and find solutions […]
Read article
Looking Ahead to Maximum Achievable Control Technology (MACT) Rules Updates
Posted: January 19th, 2023
The U.S. Environmental Protection Agency (U.S. EPA) is currently working on several rulemakings under 40 CFR Part 63, National Emission Standards for Hazardous Air Pollutants (NESHAP). For many of these rulemakings, U.S. EPA is under a court-ordered deadline to finalize […]
Read article
U.S. EPA Issues Supplemental Proposal to Oil and Natural Gas Sector Methane and VOC Rules
Posted: January 4th, 2023
On December 06, 2022, the U.S. Environmental Protection Agency (U.S. EPA) released a supplement to its proposed rule from November 15, 2021 which amended existing New Source Performance Standards (NSPS) for Crude Oil and Natural Gas Facilities (40 CFR Part […]
Read article
U.S. EPA Proposes to Remove TRI De Minimis Exemption for PFAS
Posted: December 15th, 2022
On December 5, 2022, U.S. Environmental Protection Agency (U.S. EPA) released a proposed rule pursuant to the National Defense Authorization Act (NDAA) for Fiscal Year 2020 which adds per- and polyfluoroalkyl substances (PFAS) to the list of “Lower Thresholds for […]
Read article