After an application has been submitted to the Administrator, but before a determination is made on the issuance or transfer of a permit, the applicant must submit an amendment to the application if there is a significant change in the circumstances represented in the original application which affects the requirements of this subpart. Applicants should consult with NOAA to determine if changes in circumstances are sufficiently significant to require submission of an amendment. The application, as amended, would then serve as the basis for determinations by the Administrator under this part. For each amendment judged by the Administrator to be significant, the Administrator will provide a copy of that amendment to each other Federal agency and department which received a copy of the original application, and also will provide for public notice, hearing and comment on the amendment pursuant to § 971.212. After the issuance or transfer of a permit, any revision of the permit will be made pursuant to § 971.413. Any amendment or modification which would cause coastal zone effects substantially different than those originally reviewed by the state agency would be subject to Federal consistency review as prescribed in 15 CFR part 930.