All Knowledge & Insights By Date

On April 2, 2025, the U.S. Environmental Protection Agency (EPA) announced that it is postponing the effectiveness of certain provisions of its December 17, 2024, final risk management rule for trichloroethylene (TCE) until June 20, 2025. 90 Fed. Reg. 14415. After EPA issued the final rule in December 2024, it received multiple petitions for an administrative stay of the effective date. EPA denied the requests, and the companies submitted renewed petitions to stay the effective...

On March 21, 2025, the U.S. Court of Appeals for the District of Columbia Circuit heard oral argument in a case challenging the U.S. Environmental Protection Agency’s (EPA) May 3, 2024, final rule amending the procedural framework rule for conducting risk evaluations under the Toxic Substances Control Act (TSCA). United Steel, Paper and Forestry, Rubber, Manufacturing, Energy, Allied Industrial and Service Workers International Union (USW) v. EPA, Consolidated Case No. 24-1151. If you have a...

On January 16, 2025, the U.S. Environmental Protection Agency (EPA) released a compliance guide to assist the regulated community in complying with Workplace Chemical Protection Program (WCPP) requirements for chemicals regulated under Section 6 of the Toxic Substances Control Act (TSCA). EPA states that a WCPP “is a chemical protection program designed to address unreasonable risk posed by chemical exposure to persons in occupational settings.” The compliance guide provides an overview of...

On July 1, 2024, the National Institute for Occupational Safety and Health (NIOSH) posted a NIOSH Science Blog item entitled “Celebrating 20 Years of the Nanotechnology Research Center: Highlights from Engineering Controls and Personal Protective Equipment,” part of a series commemorating the 20th anniversary of the Nanotechnology Research Center (NTRC). The item notes that NIOSH researchers “have conducted laboratory and field research to develop and implement science-based national...

The U.S. Environmental Protection Agency (EPA) announced on February 14, 2022, that it will reopen the comment period for its draft revision to the risk determination for the cyclic aliphatic bromide cluster (HBCD) risk evaluation issued under the Toxic Substances Control Act (TSCA). As reported in our December 29, 2021, memorandum, EPA is reconsidering two key aspects of the risk determinations for HBCD. First, EPA proposes that the appropriate approach to these determinations under TSCA and...

The U.S. Environmental Protection Agency (EPA) announced on March 29, 2021, that it is evaluating its policies, guidance, templates, and regulations under the Toxic Substances Control Act (TSCA) new chemicals program to ensure they “adhere to statutory requirements,” the Biden-Harris Administration’s executive orders, and other directives.  EPA identified several instances where its approach for making determinations and managing risks associated with new chemicals can,...

The National Institute for Occupational Safety and Health (NIOSH) has posted two posters from the NIOSH Nanotechnology Research Center (NTRC) on 3D printing:  3D Printing with Filaments:  Health and Safety Questions to Ask and 3D Printing with Metal Powders:  Health and Safety Questions to Ask.  The posters provide health and safety questions with different control options and information intended to reduce exposure to potential hazards.  The questions...

The International Organization for Standardization (ISO) has published standard ISO/TS 21361:2019, “Nanotechnologies — Method to quantify air concentrations of carbon black and amorphous silica in the nanoparticle size range in a mixed dust manufacturing environment.”  The standard provides guidelines to quantify and identify particles of carbon black and/or amorphous silica in air samples collected in a mixed dust industrial manufacturing environment.  The guidelines describe air sample...

The U.S. Environmental Protection Agency (EPA) is scheduled to publish on October 3, 2018, a direct final rule promulgating significant new use rules (SNUR) for 26 chemical substances, including carbon nanomaterial (generic), that were the subject of premanufacture notices (PMN).  The chemical substances are subject to orders issued by EPA pursuant to Sections 5(e) and 5(f) of the Toxic Substances Control Act (TSCA).  The direct final rule requires persons who intend to...

The National Institute for Occupational Safety and Health (NIOSH) published a Federal Register notice on April 24, 2018, announcing the availability of a draft research plan entitled Continuing to Protect the Nanotechnology Workforce:  NIOSH Nanotechnology Research Plan for 2018-2025 for public comment.  The draft Nanotechnology Research Plan presents the Nanotechnology Research Center (NTRC) strategic plan for fiscal years (FY) 2018-2025, highlighting how the...