2570.50—Revocation or modification of exemptions.
(a)
If, after an exemption takes effect, changes in circumstances, including changes in law or policy, occur which call into question the continuing validity of the Department's original conclusions concerning the exemption, the Department may take steps to revoke or modify the exemption.
(b)
Before revoking or modifying an exemption, the Department will publish a notice of its proposed action in the Federal Register and provide interested persons with an opportunity to comment on the proposed revocation or modification. In addition, the Department will give the applicant at least 30 days notice in writing of the proposed revocation or modification and the reasons therefor and will provide the applicant with the opportunity to comment on the revocation or modification.