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Energía y medio ambiente · 10/12/20101 min de lectura

Integrated Risk Information System (IRIS); Announcement of Availability of Literature Searches for IRIS Assessments

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Resumen

The U.S. Environmental Protection Agency (EPA) is announcing the availability of literature searches for four IRIS assessments, acetaldehyde (CAS No. 75-07-0), hexachlorobutadiene (CAS No. 87-68-3), hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) (CAS No. 121-82-4), and naphthalene (CAS No. 91-20-3) and requesting scientific information on health effects that may result from exposure to these chemical substances. EPA's IRIS is a human health assessment program that evaluates quantitative and qualitative risk information on effects that may result from exposure to specific chemical substances found in the environment.

Idioma original de la fuente: Federal Register — Environmental Protection AgencyAbrir el comunicado original →

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Energía y medio ambiente · 28/5/2026

Public Meetings of the Science Advisory Board Contaminant Candidate List (CCL) 6 Augmented Drinking Water Committee (DWC)

The Environmental Protection Agency (EPA) Science Advisory Board (SAB) Branch is announcing public meetings of the SAB Contaminant Candidate List (CCL) 6 Augmented Drinking Water Committee (DWC), (CCL 6 DWC). The purpose of the meetings is to receive a briefing from EPA, review the draft contaminant candidate list, review, discuss, and prepare responses to charge questions and discuss the draft responses on the EPA's draft CCL 6.

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Energía y medio ambiente · 27/5/2026

Phasedown of Hydrofluorocarbons: Allocation of 2026 Production and Consumption Allowances Set Aside for Metered Dose Inhalers

The Environmental Protection Agency (EPA) is providing notice that the Agency allocated hydrofluorocarbon (HFC) set-aside allowances to general pool production and consumption allowance holders. For the calendar year 2026 allocation of HFC allowances, the EPA withheld a limited number of allowances from all general pool allowance holders. These allowances were set aside to accommodate unforeseen HFC needs for metered dose inhaler (MDI) end users. Entities that use HFCs as a propellant in MDIs had until April 30, 2026, to apply for these allowances, and the EPA received no applications. Accordingly, the EPA allocated all of the set-aside allowances pro rata amongst general pool allowance holders. This notice is announcing that allocation.

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Energía y medio ambiente · 29/5/2026

Approval and Promulgation of State Air Quality Plans (Negative Declarations) for Designated Facilities and Pollutants; District of Columbia

The Environmental Protection Agency (EPA) is providing notice of and is codifying approval of negative declarations submitted by the District of Columbia Department of Energy and Environment (DCDOEE) on July 19, 2024 and August 28, 2024. The negative declarations submitted by the DCDOEE certify that there are no existing large municipal waste combustors (LMWC), crude oil and natural gas facilities (ONG), or electric utility generating units (EGU) subject to sections 111(d) and 129 of the Clean Air Act (CAA) within the jurisdiction of the District of Columbia.

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Energía y medio ambiente · 29/5/2026

South Carolina; Approval of State Plan for Control of Emissions From Commercial and Industrial Solid Waste Incineration Units

The Environmental Protection Agency (EPA) is taking final action to approve a state plan submitted by the State of South Carolina, through the South Carolina Department of Health and Environmental Control (SC DHEC) on December 19, 2014, and supplemented on September 17, 2018, June 19, 2019, and November 5, 2019, for implementing and enforcing the Emissions Guidelines (EG) applicable to existing Commercial and Industrial Solid Waste Incineration (CISWI) units. The State plan provides for implementation and enforcement of the EG, as finalized by EPA on June 23, 2016, applicable to existing CISWI units for which construction commenced on or before June 4, 2010, or for which modification or reconstruction commenced after June 4, 2010, but no later than August 7, 2013. The State plan also incorporates the CISWI technical amendments finalized by EPA on April 16, 2019. The South Carolina State plan establishes emission limits, monitoring, operating, recordkeeping, and reporting requirements for affected CISWI units.

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Energía y medio ambiente · 29/5/2026

Air Plan Approval; Virginia; Repeal of Existing Stationary Source Regulations

The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision (Revision B23) submitted by the Commonwealth of Virginia. The revision removes two existing stationary sources regulations, emission standards for petroleum refinery operations and emissions standards for large appliance coating application systems, from Virginia's SIP as there are no longer any applicable sources in Virginia. The EPA is approving these revisions to the Virginia SIP in accordance with the requirements of the Clean Air Act (CAA).

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Energía y medio ambiente · 29/5/2026

Partial Approval and Partial Disapproval of Air Quality Implementation Plans; Hawaii; Regional Haze State Implementation Plan for the Second Implementation Period

The Environmental Protection Agency (EPA) is partially approving and partially disapproving the regional haze state implementation plan (SIP) revision submitted by Hawaii on August 2, 2024, under the Clean Air Act (CAA) and the EPA's Regional Haze Rule (RHR) for the program's second implementation period. Hawaii's SIP submission is intended to address the requirement that states must periodically revise their long-term strategies for making reasonable progress towards the national goal of preventing any future, and remedying any existing, anthropogenic impairment of visibility, including regional haze, in mandatory Class I Federal areas. The SIP submission also addresses other applicable requirements for the second implementation period of the regional haze program. The EPA is approving the portions of Hawaii's submission relating to calculations of baseline, current, and natural visibility conditions, progress to date, the uniform rate of progress, reasonably attributable visibility impairment, progress report requirements, and monitoring strategy and other implementation plan requirements. The EPA is disapproving the long-term strategy, including the enforceable shutdown of sever

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