45 CFR §689.10

1. (a)An affected individual or institution may appeal to the Director in writing within 30 days after receiving the Deputy Director's written decision. The Deputy Director's decision becomes a final administrative action if it is not appealed within the 30 day period.
2. (b)The Director may appoint an uninvolved NSF officer or employee to review an appeal and make recommendations.
3. (c)The Director will normally inform the appellant of a final decision within 60 days after receiving the appeal. That decision will be the final administrative action of the Foundation