(AGENPARL) - Roma, 15 Aprile 2024 - (AGENPARL) – lun 15 aprile 2024 Issued: Apr 15, 2024 (11:49am EDT)
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EPA Takes Action to Maintain Public Health Protections for Communities Near
Stationary Combustion Turbines
WASHINGTON – Today, April 15, the U.S. Environmental Protection Agency
denied a petition to remove stationary combustion turbines from the list of
sources subject to regulation for emissions of air toxics, maintaining public
health protections for communities near these facilities. As a result of
denying this petition, stationary combustion turbines will continue to be
required to comply with national limits on hazardous air pollutants such as
formaldehyde under section 112 of the Clean Air Act. 
“Today’s action will ensure people who live, work and play near these
facilities are protected from harmful air pollution,” said EPA Administrator
Michael S. Regan. “EPA is committed to ensuring every community has clean
air to breathe, especially those that have been overburdened and
disproportionately impacted by poor air quality for too long.”
Stationary combustion turbines are typically located at power plants,
compressor stations, landfills, and industrial facilities such as chemical
plants. These turbines generally operate using natural gas, distillate oil,
landfill gas, jet fuel, or process gas. Toxic emissions are present in the
exhaust gases of these turbines and are the result of combustion of the
gaseous and liquid fuels.
Today’s action supports EPA’s comprehensive approach to address climate
and health-harming pollution from stationary combustion turbines. EPA is
engaging with stakeholders on next steps for a broad-based approach to new and
existing combustion turbines, including a proposed revision to the air toxics
standards for combustion turbines as well as separate rulemakings to address
ozone-forming pollution from new combustion turbines and to establish
greenhouse gas emission guidelines for existing combustion turbines. 
EPA’s section 112 regulations limit emissions of air toxics, also called
hazardous air pollutants, such as formaldehyde, toluene, benzene,
acetaldehyde, and metallic HAP (e.g., cadmium, chromium, manganese, lead,
nickel). HAP are known to cause – or are suspected to cause – cancer or
other serious adverse health and environmental effects. Formaldehyde and
acetaldehyde are probable human carcinogens.
Petitioners requested EPA remove, or “delist,” combustion turbines, saying
that cancer risks from this source category were below 1-in-1 million and
would meet the statutory “delisting” threshold. EPA has reviewed data and
analyses submitted as part of this petition as well as additional emissions
testing data. EPA is denying the petition based on the agency’s
determination that the petition is incomplete and because EPA cannot conclude
that there are adequate data to determine that the delisting thresholds in the
Clean Air Act have been met. This is primarily due to both the uncertainty in
the HAP emissions from affected sources and the missing emissions data from a
large number of affected sources in the petitioners’ risk analysis.
A pre-publication version of the notice and a fact sheet are available on the
Stationary Combustion Turbines: National Emission Standards for Hazardous Air
Pollutants webpage.
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