TSCA Existing Chemicals & Regulatory HPV Support

US EPA's Toxic Substances Control Act (TSCA) regulations require EPA to address pollution prevention, hazard and exposure assessment, risk assessment, and risk management for chemicals in commerce. Under TSCA, EPA is charged with the responsibility of assessing the safety of chemicals and to act if there are significant risks to human health or the environment. For “existing chemicals,” EPA has programs to address risk assessment and risk reduction measures, data collection and screening, and public access to chemical data. Current actions include identification of TSCA Workplan Chemicals, specific chemical risk management actions, issuance of new rules for chemical data reporting (CDR) and electronic reporting, final rules under TSCA section 4(a) requiring testing for orphan High Production Volume (HPV) chemicals, and updates to the Interagency Testing Committee (ITC) Priority Chemical Lists. EPA has a separate program for "new chemicals."

Exponent’s chemists, toxicologists, ecotoxicologists, and environmental and exposure assessment professionals have a wide-range of experience in managing complex projects, and have the technical and regulatory expertise to assist clients with TSCA existing chemical requirements.

We are uniquely prepared to assist with all aspects of TSCA regulations from evaluation of existing data and data gaps, exposure assessments, risk assessments, data development, electronic reporting, and discussions with EPA before and after your package is submitted to the Agency. Our staff includes consultants who have previously held managerial positions at the EPA Office of Chemical Safety and Pollution Prevention (OCSPP), and we additionally have significant and successful technical and administrative task force management experience.

We are prepared to work with you and your company to design a program to support your TSCA Existing Chemicals needs.

Exponent’s services include:

  • Task force/consortium management
  • Study design, placement, and monitoring of testing programs
  • Hazard, exposure, and risk assessments
  • Assessment of available data
  • Data gap analysis
  • Preparation of data summaries for submission to EPA
  • Chemical grouping, read-across, and SAR analysis and assessments (including OECD QSAR Toolbox 2.2 modeling, and ChemPrint metabolism modeling)
  • Project management



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