4 The Record is a publication from ALL4’s team that takes an in-depth look at technical and regulatory topics.
Portions of Refinery MACT Withdrawn by U.S. EPA
Posted: August 6th, 2011
On July 18, 2011, U.S. EPA published notice in the Federal Register (76 FR 42052) that the residual risk and technology review portions of the revised National Emission Standards for Hazardous Air Pollutants (NESHAP) from Petroleum Refineries (Refinery MACT 1) […]
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ALL4’s: Is That Your Final Answer?
Posted: July 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?
U.S. EPA Regional, State, and Local Dispersion Modelers Workshop Slides Available
Posted: July 20th, 2011
U.S. EPA has made available the presentations from the U.S. EPA Regional, State, and Local Dispersion Modelers Workshop (Workshop)…
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NESHAP Comment Periods Extended
Posted: July 15th, 2011
On July 1, 2011, U.S. EPA announced that it was extending the comment periods for two (2) rules: the proposed new National Emission Standards for Hazardous Air Pollutants (NESHAP) for Coal- and Oil-Fired Electric Utility Steam Generating Units (Utility MACT), […]
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A New Twist to Determining Applicability of Greenhouse Gas Regulations
Posted: July 11th, 2011
On July 1, 2011, U.S. EPA issued a final rule which, for a period of three (3) years, defers the consideration of CO2 emissions from bioenergy and other biogenic sources (biogenic CO2 emissions) when determining whether a stationary source meets […]
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ALL4’s: Is That Your Final Answer?
Posted: June 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?
PM2.5: Repeal and Reminder
Posted: June 25th, 2011
U.S. EPA has repealed the Prevention of Significant Deterioration (PSD) “Grandfathering” provision for particulate matter with an aerodynamic diameter of less than 2.5 microns (PM2.5). Facilities that submitted PSD construction permit applications prior to the promulgation of the PM2.5 New […]
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Marcellus Shale in New York – The Saga Continues
Posted: June 20th, 2011
While numerous drilling operations in Pennsylvania and West Virginia have begun to tap the vast natural gas resources in the Marcellus Shale formation during the past several years, New York has been, to put it mildly, reluctant to join the […]
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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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ALL4 Attends U.S. EPA Regional, State, and Local Dispersion Modelers Workshop
Posted: June 13th, 2011
ALL4’s ambient group members Dan Dix and Colin McCall attended the U.S EPA Regional, State, and Local Dispersion Modelers Workshop (Workshop) held in Atlanta, GA on June 9, 2011. The annual meeting, which is hosted by the U.S. EPA Office […]
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