4 The record articles

4 The Record is a publication from ALL4’s team that takes an in-depth look at technical and regulatory topics.

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Compliance Alert

Posted: June 15th, 2011

ALL4 has observed a concerted increase in U.S. EPA compliance inspection activity at major source facilities in recent months. These inspections are not like your typical state compliance inspection and do not appear to be focused on a specific industry […]

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Boiler MACT…Yes…No…Maybe?

Posted: June 10th, 2011

Many questions surround the logic that U.S. EPA used to develop the emission limits contained in the Boiler MACT. One potential flaw identified by those petitioning U.S. EPA for judicial review of the Boiler MACT is the establishment of…

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Slade’s Corner – Avoiding Regulatory “Fatigue”

Posted: June 5th, 2011

It seems like there is a new air quality regulatory initiative being launched by U.S. EPA every week or so. From New Source Review (NSR) interpretations to greenhouse gas (GHG) programs to Maximum Achievable Control Technology (MACT), the litany of […]

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ALL4’s: Is That Your Final Answer?

Posted: May 29th, 2011

Test your knowledge across the environmental field, on the building blocks of air quality rules, on ALL4 general trivia, and challenge you with brain teasers that have perplexed us…Take on ALL4’s Is That Your Final Answer?

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Another Update to AERMOD!!

Posted: May 16th, 2011

On April 12, 2011 U.S. EPA’s Air Quality Modeling Group (AQMG) released another update to the AERMOD (now version 11103) air dispersion model on the Support Center for Regulatory…

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The Forgotten NAAQS

Posted: May 12th, 2011

With all of the excitement surrounding the implementation of the new 1-hour National Ambient Air Quality Standards (NAAQS) for sulfur dioxide (SO2) and nitrogen dioxide (NO2), it’s easy to forget that U.S. EPA is also in the process of reviewing […]

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A New Pennsylvania RACT Rulemaking is on the Way

Posted: May 8th, 2011

The Pennsylvania Department of Environmental Protection (PADEP) has announced that they will be revising their Reasonably Available Control Technology (RACT) regulations in 25 Pa. Code Chapter 129 for control of major sources of nitrogen oxides (NOx) and volatile organic compounds […]

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Introducing Slade’s Corner

Posted: May 5th, 2011

U.S. EPA has once again ventured into new, and this time somewhat troubling, territory. Lisa Jackson, U.S. EPA Administrator and previous official with the State of New Jersey, has proposed to grant a petition filed by the State of New […]

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