Environmentalists are expanding their litigation seeking to force EPA action to ensure that states have the necessary plans in place to reduce regional haze, as the vast majority of state plans for the second phase of the program are now either overdue or awaiting EPA action. In a notice of...
EPA is proposing to delay by three years its deadline for states to submit plans to implement the third phase of its regional haze program that is due to begin in 2029, with plans now due in 2031 instead of 2028, allowing states more time to develop plans that will take into account a...
defined in terms of a PM2.5visibility index based on speciated37PM2.5mass concentrations and relative humidity data to calculate light extinction on a deciview (dv) scale38similar to the current Regional Haze Program.39Specifically, the proposal would have set a 24-hour averaging time of...
Court of Appeals for the Fifth Circuit should vacate the EPA's federal regional haze plan for Texas and Oklahoma rather than remand the rule for correction as the EPA has requested. The states' plans should be reinstated as a result they said. Barring that, Texas and the utilities asked ...
Historically, Southern California has been plagued by smog, which forms when the region’s persistent sunlight interacts with vehicle exhaust and smokestack emissions. The region’s mountainous terrain confines this toxic haze over the region, rather than allowing it to disperse. ...
meters. Aethalometers optically measure the concentration of light absorbing or “black” particles that accumulate on a filter as air flows through it. These particles are produced by incomplete fossil fuel, biofuel and biomass combustion. Under polluted conditions, they appear as smoke or haze....
EPA also recently issued a proposal to address minor errors that have accumulated over time in four NSR regulations. While these minor errors, such as outdated cross references and typographical errors, have not materially impeded the effective operation of the NSR program, EPA believes that it is...
Textron Aviation and other Green Power Partners are helping to reduce the negative health impacts of air emissions, including those related to ozone, fine particles, acid rain and regional haze. According t...
On October 31, 2003, EPA announced the availability of two guidance documents pertaining to the regional haze regulations: 1) Guidance for Estimating Natural Visibility Conditions Under the Regional Haze Program, and 2) Guidance for Tracking Progress Under the Regional Haze Rule. The purpose of the...
EPA Proposes FIP for Texas Regional Haze Plan | Katten Muchin Rosenman LLPDanny G. Worrell