Bergeson & Campbell, P.C. (B&C®) is a Washington, D.C. law firm providing chemical and chemical product stakeholders unparalleled experience, judgment, and excellence in matters relating to TSCA, and other global chemical management programs.

By Lynn L. Bergeson and Carla N. Hutton
 
The U.S. Environmental Protection Agency (EPA) announced on November 20, 2020, the availability of a supplemental analysis to the draft risk evaluation of 1,4-dioxane under the Toxic Substances Control Act (TSCA).  85 Fed. Reg. 74341.  EPA states that it developed the supplemental analysis in response to public and peer review comments on the draft risk evaluation.  The supplemental analysis includes eight consumer uses, including surface cleaners, laundry/dishwashing detergents, and paint/floor lacquer, where 1,4-dioxane is present as a byproduct.  The supplemental analysis also assesses exposure to the general population from 1,4-dioxane in surface water.  In the supplemental analysis, EPA preliminarily found no unreasonable risk to consumers from the eight conditions of use assessed.  EPA also preliminarily found no unreasonable risks under any of the conditions of use to the general population from exposure to 1,4-dioxane.  Comments are due December 10, 2020.  More information on the draft risk evaluation of 1,4-dioxane is available in our July 2, 2019, memorandum.


 

By Lynn L. Bergeson and Margaret R. Graham, M.S.

On March 22, 2019, the U.S. Environment Protection Agency (EPA) issued a memorandum stating that it was releasing 24 studies in the Colour Index (C.I.) Pigment Violet (PV) 29 docket (Docket No. EPA-HQ-OPPT-2018-0604) that were reviewed by EPA to develop its Draft Risk Evaluation for C.I. PV 29.  EPA states that these studies are being made available to the public prior to the Toxic Substances Control Act (TSCA) Science Advisory Committee on Chemicals (SACC) expert panel peer review of the draft risk evaluation.  That entirety of the reports was originally erroneously claimed to be confidential business information (CBI), therefore, the reports were not included in the public docket previously.   Fifteen of the study reports have been released without any redactions while nine reports were partially redacted.  EPA provides a full list of the studies and their confidential status in the memorandum.  The 24 study reports represent the following disciplines:  #1-17 Human Health; #18-20 Environmental Hazard; #21-22 Environmental Fate, and #23-24 Physical Chemical properties.  Twenty of the 29 studies made available in the dockets were summarized in the European Chemicals Agency’s (ECHA) registration dossier for C.I. PV 29; EPA refers to them as “robust summaries” and states that it has compared the information contained in the robust summaries against the information contained in the study reports for accuracy.  They were posted to the docket in November 2018.