The toxic substance control act and regulations (TSCA) are extensive and complicated. The below links are provided as a resource to contact the particular area of TSCA that may be of concern.

• http://www.epa.gov/compliance/resources/policies/incentives/auditing/tsca.pdf
  This page contains guidance for PCBs, Asbestos, Lead and other TSCA regulated substances.
• http://www.epa.gov/opptintr/
  PCB Home Page, all you want to know about TSCA.
• http://www.epa.gov/opptintr/biotech/index.html
  EPA's TSCA Biological Technology Program.
• http://tsca-inventory.findthedata.org/
  TSCA Chemicals Inventory.