1,4-Dioxane is a synthetic organic chemical that has been used in a variety of industrial applications, most notably as a stabilizer for chlorinated solvents such as 1,1,1-trichloroethane. Because it is highly mobile in water and has been detected in soil, groundwater, and drinking water supplies worldwide, it has become an emerging environmental contaminant of concern. The U.S. Environmental Protection Agency has determined that 1,4-dioxane is likely to be carcinogenic to humans through all routes of exposure, making its identification and management an important environmental and public health priority.
The 1,4-Dioxane (14D-1, 2021) guidance includes a technical guidance document, fact sheets, and six-part modular training course. It provides environmental professionals, regulators, project managers, and other stakeholders with comprehensive information on the history, sources, occurrence, and regulatory framework of 1,4-dioxane. The guidance covers environmental fate and transport, site investigation strategies, sampling and analytical methods, toxicity and risk assessment, and remediation and treatment technologies. It is designed to support informed decision-making and effective management of 1,4-dioxane contamination.
Topic(s): 1,4-Dioxane, Chlorinated Solvents, Contaminants of Emerging Concern, Remediation Technologies
