An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Confidential Business Information under TSCA

TSCA CBI Training - Responsibilities

Receive/Store TSCA CBI and Keep a Record of Lock Combinations

DCOs have the responsibility of reviewing incoming TSCA CBI for completeness, including contacting submitters if the information appears incomplete. When materials appear to be complete, DCOs also have the responsibility to ensure that documents are properly stamped, Document Control Numbers are assigned, and that a CBI cover sheet is properly attached to the document.

DCOs are responsible for ensuring CBI is being stored properly. The DCO supervises the storage of TSCA CBI in secure storage containers or in a centralized secure TSCA CBI storage area.

DCOs also have the responsibility of maintaining records of lock combinations for rooms and containers in which TSCA CBI is stored.