4 The Record is a publication from ALL4’s team that takes an in-depth look at technical and regulatory topics.
The Ever-Evolving Science of Air Quality Modeling
Posted: June 3rd, 2019
One of the reasons I’ve enjoyed air quality modeling during my 16-year career with ALL4 is because it’s an ever-evolving science. The air quality modeling that I was learning and conducting 16 years ago is vastly different than the air […]
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So, You Thought You Were Through With RACT 2 – Think Again
Posted: May 22nd, 2019
On April 23, 2016, the Pennsylvania “RACT 2 Rule” (i.e., Additional RACT Requirements for Major Sources of NOX and VOCs) was published final in the Pennsylvania Bulletin. The rule includes provisions intended to meet Reasonably Available Control Technology (RACT) requirements […]
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Continuous Monitoring Systems (CMS) in Pennsylvania: The Devil’s in the Details
Posted: May 22nd, 2019
Does your facility operate a continuous monitoring system (CMS) in Pennsylvania? If so, it’s possible that you, or someone at your facility, is familiar with Pennsylvania Department of Environmental Protection (PADEP) Continuous Source Monitoring Manual (CSMM) Revision No. 8 (Rev. […]
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Georgia Emissions Statements, and Emissions Inventories, and Fees, Oh My!
Posted: May 8th, 2019
While some states have already wrapped up their annual air emissions reporting and fee requirements for the 2018 reporting year, annual reporting deadlines are quickly approaching for facilities in Georgia. The Georgia Environmental Protection Division (GEPD) requires annual emissions statements, […]
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Upcoming Updates to Texas Nonattainment Reclassification
Posted: May 7th, 2019
At this year’s Air and Waste Management Association (AWMA) Gulf Coast Chapter (GCC) Annual Conference, several folks from ALL4’s Houston Office had the opportunity to hear from Donna Huff of the Air Programs Division at the Texas Commission on Environmental […]
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Upcoming Changes to the Turbine MACT With a Short Timeline to Comply
Posted: April 23rd, 2019
On Friday, April 12, 2019, U.S. EPA proposed changes to the National Emission Standards for Hazardous Air Pollutants for Stationary Combustion Turbines [40 CFR 63, Subpart YYYY (Turbine MACT)] as a result of its risk and technology review (RTR). This […]
Read articleAir Quality Related Bills to Watch in the 86th Texas Legislative Session
Posted: April 19th, 2019
“Check out Kristin’s updated article What Happened: Air Quality Bills to Watch in the 86th Texas Legislative Session“. As discussed in The 86th Texas Legislative Session: The Process and Implications for Texas Facilities with Air Permits, every two years, the […]
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6 Months Left to Comply with the Subpart MM Amendments
Posted: April 19th, 2019
Six months ago I wrote about what you should be doing to begin preparing for the October 11, 2019 compliance date for amendments to 40 CFR Part 63, Subpart MM (National Emission Standards for Hazardous Air Pollutants for Chemical Recovery […]
Read articleThe 86th Texas Legislative Session: The Process and Implications for Texas Facilities with Air Permits
Posted: April 19th, 2019
“Check out Kristin’s updated article What Happened: Air Quality Bills to Watch in the 86th Legislative Session. Every two years the Texas House and Senate members converge upon Austin for a 140-day legislative session (session). As part of the 86th […]
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Preparing for Subpart MM 2020 Performance Testing
Posted: April 18th, 2019
40 CFR Part 63, Subpart MM (National Emission Standards for Hazardous Air Pollutants for Chemical Recovery Combustion Sources at Kraft, Soda, Sulfite, and Stand-Alone Semichemical Pulp Mills) was amended in October 2017. The amendments include a periodic performance testing provision, […]
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