4 The Record is a publication from ALL4’s team that takes an in-depth look at technical and regulatory topics.
U.S. EPA Releases New Dispersion Modeling Guidance
Posted: September 12th, 2010
U.S. EPA’s Air Quality Modeling Group (AQMG) released guidance on the U.S. EPA Support Center for Regulatory Atmospheric Modeling (SCRAM) website. The first memorandum entitled “Applicability of Appendix W Modeling Guidance for the 1-hour SO2 NAAQS” was released in conjunction with the […]
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Utility MACT Information Collection Request (ICR) Results Available for Review
Posted: August 14th, 2010
U.S. EPA has initiated work to develop emissions standards for utility power plants under Clean Air Act Section 112, consistent with the D.C. Circuit’s opinion (PDF) regarding the Clean Air Mercury Rule (CAMR). The Court-issued final Consent Decree calls for signature of […]
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U.S. EPA Proposes New Pulp and Paper Information Collection Request
Posted: August 7th, 2010
U.S. EPA is proposing to distribute an information collection request (ICR) to individual Pulp and Paper Mills in an effort to obtain additional emissions related information to aid in U.S. EPA’s re-evaluation of emission standards for the industry. The Clean […]
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“Transport Rule” (aka CAIR Replacement Rule) Proposed by U.S. EPA
Posted: July 26th, 2010
U.S. EPA has released a pre-publication version of the proposed Transport Rule and is proposing to limit the interstate transport of emissions of nitrogen oxides (NOX) and sulfur dioxide (SO2). Under this proposal U.S. EPA would both identify and limit […]
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Changes to the Greenhouse Gas Mandatory Reporting Rule
Posted: July 19th, 2010
On June 28, 2010, the United States Environmental Protection Agency (U.S. EPA) issued a final rule that adds four (4) new source categories to those that will be required to submit annual greenhouse gas (GHG) emissions reports pursuant to the […]
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Changes to the Greenhouse Gas Mandatory Reporting Rule
Posted: July 14th, 2010
On June 28, 2010, the United States Environmental Protection Agency (U.S. EPA) issued a final rule that adds four (4) new source categories to those that will be required to submit annual greenhouse gas (GHG) emissions reports pursuant to the […]
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Boiler MACT and CISWI: To Comment or Not to Comment?… that is the question.
Posted: July 3rd, 2010
To associate Shakespeare and the Boiler MACT/CISWI regulations is quite a stretch I know, but I believe that the decision “to comment or not to comment” is as metaphorically significant as Hamlet’s “to be or not to be” and certainly […]
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More Stringent SO2 NAAQS Finalized by U.S. EPA
Posted: June 27th, 2010
U.S. EPA has announced the promulgation of a new 1-hour National Ambient Air Quality Standard (NAAQS) for sulfur dioxide (SO2). The new 1-hour NAAQS level is 75 parts per billion (ppb) measured as the three year average of the 99th […]
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Stationary Compression and Spark Ignition Internal Combustion Engine Rule Revisions Proposed
Posted: June 23rd, 2010
On May 21, 2010, U.S. EPA proposed amendments to 40 CFR Part 60, Subparts IIII (Standards of Performance for Stationary Compression Ignition Internal Combustion Engines) and Subpart JJJJ (Standards of Performance for Stationary Spark Ignition Internal Combustion Engines). The proposed […]
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U.S. EPA Convenes RSL Modelers Workshop
Posted: June 18th, 2010
On May 10 – 13, U.S. EPA met with regional, state, and local modelers in Portland, Oregon for the U.S. EPA Regional/State/Local (RSL) Modelers Workshop. Several “hot-topic” items were included on the agenda, most notably, the new NO2 and SO2 […]
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