4 The Record is a publication from ALL4’s team that takes an in-depth look at technical and regulatory topics.
What is the U.S. EPA Air Office Working on These Days?
Posted: June 21st, 2019
Update: On June 26, 2019, U.S. EPA Assistant Administrator Bill Wehrum has stepped down from his role in the Office of Air and Radiation. The regulated community may see delays in rulemaking until a permanent replacement is named. Please check […]
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A Message to Our Clients – Growth at ALL4…
Posted: June 18th, 2019
“Growth” is a word that has been used A LOT here at ALL4 recently. Whether it is growth in the number of consultants, or new offices (check out our new Raleigh Office Announcement), or new leadership and technical opportunities for […]
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Texas SIP Emission Inventory Revisions for Sites in Bexar County
Posted: June 13th, 2019
In case you have not been following, the U.S. Environmental Protection Agency (U.S. EPA) designated Bexar County (San Antonio area) as nonattainment for the 2015 eight-hour ozone National Ambient Air Quality Standard (NAAQS). This designation was effective on September 24, […]
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Georgia Permittees (Major, Minor, and Synthetic Minor): Permit Application Fees are in Effect
Posted: June 10th, 2019
Last year ALL4 published a blog post covering the proposed amendments to Georgia Administrative Code (G.A.C.) 391-3-1-.03(9), which addressed Georgia’s proposed air permit application fees. The permit application fees were adopted into rule in April 2018 and officially went into […]
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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 […]
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