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 This website is no longer updated and links to external websites and some internal pages may not work.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 »

EPCRA Reporting Mechanisms for Protecting Sensitive Business Information

Does EPCRA provide any mechanisms for facilities that must submit Tier II inventory information to protect sensitive business information?

Trade secret and confidential location information (CLI) are two separate confidentiality provisions under EPCRA. Trade secret claims made under EPCRA Sections 303, 311, 312, or 313 allow facilities to claim the specific chemical identity of a chemical as a trade secret. Facilities are then required to submit sanitized and unsanitized substantiation forms and EPCRA reports to EPA and sanitized substantiation forms and EPCRA reports to the appropriate state or local agencies as specified in 40 CFR Parts 355, 370, and 372. The procedures for asserting a claim of trade secrecy are found in 40 CFR Part 350, and the substantiation forms and instructions are available at the following URL:

Since claims of confidentiality regarding the location of chemicals in facilities are not covered by EPCRA trade secrecy protection, facilities are also allowed to submit Confidentiality Location Information (CLI) under EPCRA Section 312 to withhold storage locations of otherwise disclosed chemicals. CLI should not be sent to EPA, but only to the requesting state and local entity. The procedures for withholding CLI are found in 40 CFR 370.64(b), and the Confidential Location Information Form is available at the following URL: