The State Director may authorize the District Director to execute on behalf of the Government, exhibit C of this subpart, at any time during the grant period provided:

1. (a) The extension period is for no more than one year from the final date of the existing Agreement.
2. (b) The need for the extension is clearly justified.
3. (c) If additional funds are needed, a revised budget is submitted with complete justification, and
4. (d) The grantee is within the guidelines in § 1944.407 of this subpart or the State Director determines that the best interest of the Government will be served by the extension.