4 The Record is a publication from ALL4’s team that takes an in-depth look at technical and regulatory topics.
Appendix W Revision: The New Era of Air Quality Modeling – NO2 Modeling Updates
Posted: January 17th, 2017
(UPDATE 1/26/17) Air dispersion modeling of nitrogen oxides (NOX) emissions and I have a love-hate relationship. As a meteorologist, I love the process of implementing air quality modeling studies, but I hate giving bad news to clients about elevated concentrations…
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Major Source Boiler MACT Report Due January 31, 2017
Posted: January 4th, 2017
So it’s time to complete your first Boiler MACT compliance report. What exactly does that mean? It means that’s just one more thing for you to do in January! (Hint: we can help, contact me.) The report must be submitted via U.S. EPA’s Compliance and Emissions Data Reporting…
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Benzene Fenceline Monitoring – Where Should You Be by Now?
Posted: December 21st, 2016
If you are responsible for environmental compliance at a petroleum refinery, you are well aware of U.S. EPA’s requirements to install and operate a network of passive benzene fenceline monitors. The requirements originate from finalized amendments to 40 CFR Part […]
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TCEQ Reporting Season is Almost Upon Us: Are You Ready to Prepare your Facility Emissions Inventory?
Posted: December 12th, 2016
As the 2016 calendar year winds down to a close, it’s time to start thinking about and planning for the submission of your facility’s Emissions Inventory (EI) to the Texas Commission on Environmental Quality (TCEQ). As you may be aware, an EI submission is due on…
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U.S. EPA Finalizes Leak Detection Methodology Revisions to Subpart W of the GHG Reporting Rule
Posted: December 12th, 2016
Back in March 2016, Megan wrote an article about the proposed alignment between the oil and gas industry leak requirements under 40 CFR Part 98 Subpart W – Mandatory Greenhouse Gas (GHG) Reporting for Petroleum and Natural Gas Systems (Subpart W)…
Read articleDraft MERP Guidance Has Arrived
Posted: December 12th, 2016
MERP…no I’m not referring to the word used to indicate an awkward conversation or making a sound you may hear from the likes of Kermit the Frog. I’m referring to Modeled Emission Rates for Precursors – MERPs. On December 2, 2016…
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U.S. EPA Proposed 2015 Ozone NAAQS Implementation Rule
Posted: December 5th, 2016
On November 2, 2016, the United States Environmental Protection Agency (U.S. EPA) proposed an implementation of the 2015 National Ambient Air Quality Standard (NAAQS) for ozone (2015 ozone NAAQS) with requirements that would apply to states with…
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U.S. EPA Finalizes Reconsiderations to the Area Source Boiler MACT Rule
Posted: December 5th, 2016
On September 14, 2016, the U.S. Environmental Protection Agency (U.S. EPA) took final action on the five issues raised by petitioners in their petitions for reconsideration of 40 CFR Part 63, Subpart JJJJJJ – National Emission Standards for Hazardous Air Pollutants…
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TCEQ’s RAP: Committing to Streamline Air Permitting, How Fitting
Posted: December 5th, 2016
As promised in my November 8, 2016 blog, let’s discuss the much anticipated implementation of the newest Texas Commission on Environmental Quality (TCEQ) permitting program: Readily Available Permit, otherwise known as RAP. To start our discussion…
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A New Take on Air Dispersion Modeling: Re-Entrainment Evaluations
Posted: December 1st, 2016
Facilities are typically introduced to the world of air dispersion modeling when they are required to demonstrate that a proposed project will not exceed regulatory thresholds, such as maximum allowable air toxics screening levels or the National Ambient Air Quality Standards…
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