A recipient other than an individual is in violation of the requirements of this part if the Archivist of the United States or designee determines, in writing, that -
(a) The recipient has violated the requirements of subpart B of this part; or
(b) The number of convictions of the recipient's employees for violating criminal drug statutes in the workplace is large enough to indicate that the recipient has failed to make a good faith effort to provide a drug-free workplace.