On November 20, 2023, the LSPA sent a white paper to MassDEP entitled “Recommendations for Risk Management Under the MCP for Trichloroethene Exposures Based on Updated Toxicological Information.” The paper was prepared under the auspices of the LSPA’s Technical Practices Committee by Jay Peters of Haley & Aldrich, Inc. and Marie Rudiman of EnviroRisk Solutions, LLC.
Based on evaluation of the updated scientific evidence referenced in this paper, the LSPA concurs with the findings of EPA studies and others that the association of TCE exposure with congenital heart defects (CHDs) is not scientifically supported. The LSPA proposes that MassDEP seriously reconsider and reevaluate the weight of evidence for TCE-induced CHDs and revise its risk management framework for TCE to be based on the chronic immunological endpoint, rather than the developmental effects endpoint. The paper notes that this would have the following implications for the regulation of TCE in Massachusetts: