⚗️TSCA Risk Evaluation Procedures Proposed Amendments by EPA
The U.S. Environmental Protection Agency (EPA, "the Agency") is proposing to amend the procedural framework rule for conducting existing chemical risk evaluations under the Toxic Substances Control Act (TSCA). When conducting an existing chemical risk evaluation under TSCA, EPA must determine whether a chemical substance presents an unreasonable risk of injury to health or the environment, without consideration of costs or non-risk factors, including unreasonable risk to a potentially exposed or susceptible subpopulation identified as relevant to the risk evaluation, under the conditions of use. In this action, EPA proposes to rescind or revise certain 2024 amendments to the procedural framework rule to effectuate the best reading of the statute and ensure that the procedural framework rule does not impede the timely completion of risk evaluations or impair the effective and efficient protection of health and the environment.
Learn More⚗️EPA Draft Risk Evaluation on Octamethylcyclotetrasiloxane (D4)
The Environmental Protection Agency (EPA or Agency) is announcing the availability of and seeking public comment on a draft risk evaluation under the Toxic Substances Control Act (TSCA) for Octamethylcyclotetrasiloxane (Cyclotetrasiloxane, 2,2,4,4,6,6,8,8- octamethyl-) (D4) (CASRN 556-67-2). The purpose of risk evaluations under TSCA is to determine whether a chemical substance presents an unreasonable risk of injury to health or the environment under the conditions of use (COUs), including unreasonable risk to potentially exposed or susceptible subpopulations identified as relevant to the risk evaluation by EPA, and without consideration of costs or non-risk factors. EPA used the best available science to prepare this draft risk evaluation and to preliminarily determine, based on the weight of scientific evidence, that D4 poses unreasonable risk to human health and the environment driven primarily by certain conditions of use analyzed in the draft risk evaluation.
Learn More⚗️EPA Draft Risk Evaluations for Phthalates and Business Implications
The Environmental Protection Agency (EPA or Agency) is announcing the availability of and seeking public comment on the draft risk evaluations under the Toxic Substances Control Act (TSCA) for Butyl Benzyl Phthalate (BBP) (CARSN 85-68-7) and Diisobutyl Phthalate (DIBP) (CASRN 84-69-5). The purpose of risk evaluations under TSCA is to determine whether a chemical substance presents an unreasonable risk of injury to health or the environment under the conditions of use, including unreasonable risk to potentially exposed or susceptible subpopulations identified as relevant to the risk evaluation by EPA, and without consideration of costs or non-risk factors. EPA used the best available science to prepare this draft risk evaluation and to preliminarily determine, based on the weight of scientific evidence, that BBP and DIBP pose unreasonable risk to health and the environment driven primarily by certain conditions of use analyzed in the draft risk evaluations.
Learn More⚖️EPA's Peer Review and Draft Risk Evaluations for Phthalates
The Environmental Protection Agency (EPA or Agency) is announcing that there will be two virtual public meetings of the Science Advisory Committee on Chemicals (SACC). On July 21, 2025, a preparatory meeting for the SACC to consider the scope and clarity of the draft charge questions for the peer review; and on August 4 through 8, 2025, a peer review meeting for the SACC to consider the dibutyl phthalate (DBP), the dicyclohexyl phthalate (DCHP), and the di(2- ethylhexyl) phthalate (DEHP) draft risk evaluations, as well as the technical support documents for butyl benzyl phthalate (also known as benzyl butyl phthalate, BBP) and diisobutyl phthalate (DIBP), and public comments. The charge questions will address scientific and technical issues identified for peer review in all five phthalate risk evaluations scheduled to be finalized in 2025. EPA is also announcing the availability of and soliciting public comment on the draft documents and charge questions that will be provided to the SACC for this peer review. The draft risk evaluations and technical support documents were prepared under the Toxic Substances Control Act (TSCA) and will be submitted to the SACC for peer review.
Learn More⚗️EPA Draft Risk Evaluations for Dibutyl and Diethylhexyl Phthalate
The Environmental Protection Agency (EPA or Agency) is announcing the availability of and seeking public comment on the draft risk evaluations under the Toxic Substances Control Act (TSCA) for Dibutyl Phthalate (DBP) (CASRN 84-74-2) and Diethylhexyl Phthalate (DEHP) (CARSN 117-81-7). The purpose of risk evaluations under TSCA is to determine whether a chemical substance presents an unreasonable risk of injury to health or the environment under the conditions of use, including unreasonable risk to potentially exposed or susceptible subpopulations identified as relevant to the risk evaluation by EPA, and without consideration of costs or non-risk factors. EPA used the best available science to prepare this draft risk evaluation and to preliminarily determine, based on the weight of scientific evidence, that DBP and DEHP present unreasonable risk to health and the environment driven primarily by certain conditions of use analyzed in the draft evaluations.
Learn More♻️EPA Reopens Comment Period for Dicyclohexyl Phthalate Risk Evaluation
In the Federal Register of January 7, 2025, EPA announced the availability of and solicited public comment on a draft risk evaluation under the Toxic Substances Control Act (TSCA) for Dicyclohexyl phthalate (DCHP) (1,2-benzenedicarboxylic acid, 1,2-dicyclohexyl ester) (CASRN 84-61-7). This document reopens the comment period, which is scheduled to end on March 10, 2025, for 60 days.
Learn More🔬EPA Announces Rescheduled Meetings on 1,3-Butadiene Risk Evaluation
The Environmental Protection Agency (EPA or Agency) is announcing the rescheduled meeting dates of the Science Advisory Committee on Chemicals (SACC) that had been previously scheduled for February 2025 to consider and review the draft risk evaluation for 1,3- butadiene. The rescheduled preparatory meeting for the SACC to consider the scope and clarity of the revised draft charge questions for the peer review will now be held on March 25, 2025, and the rescheduled peer review meeting for the SACC to consider the draft documents and public comments will now be held on April 1 to 4, 2025. As previously announced, these meetings will be virtual public meetings of the SACC, with the public invited to comment on the scope and clarity of the revised draft charge questions for the peer review and the draft risk evaluation and related documents, including a new supplement of preliminarily refined risk estimates for 1,3-butadiene released from facilities in advance of and during the peer review meeting. The SACC will consider the comments during their discussions.
Learn More💼DOE Meeting on Environmental Management and Budget Recommendations
This notice announces an online virtual combined meeting of the Consent Order Subcommittee, Public Outreach Subcommittee and Risk Evaluation and Management Subcommittee of the Environmental Management Site-Specific Advisory Board (EM SSAB), Northern New Mexico. The Federal Advisory Committee Act requires that public notice of this meeting be announced in the Federal Register.
Learn More⚖️EPA Draft Risk Evaluation for DCHP Under TSCA - Comment Deadline March 2025
The Environmental Protection Agency (EPA or Agency) is announcing the availability of and seeking public comment on a draft risk evaluation under the Toxic Substances Control Act (TSCA) for Dicyclohexyl phthalate (DCHP) (1,2-benzenedicarboxylic acid, 1,2- dicyclohexyl ester) (CASRN 84-61-7). The purpose of risk evaluations under TSCA is to determine whether a chemical substance presents an unreasonable risk of injury to health or the environment, without consideration of costs or other non-risk factors, including unreasonable risk to potentially exposed or susceptible subpopulations identified as relevant to the risk evaluation by EPA, under the conditions of use. EPA has used the best available science to prepare this draft risk evaluation and to preliminarily determine that DCHP poses unreasonable risk to human health.
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