Within 30 days after receiving notice from an employee of a conviction pursuant to section 8102(a)(1)(D)(ii) or 8103(a)(1)(D)(ii) of this title, a contractor or grantee shall—

(1) take appropriate personnel action against the employee, up to and including termination; or

(2) require the employee to satisfactorily participate in a drug abuse assistance or rehabilitation program approved for those purposes by a Federal, State, or local health, law enforcement, or other appropriate agency.