(d) Documentation. The facility must maintain documentation substantiating compliance with this attestation element. The public access file shall contain the facility pay schedule for nurses or a description of the factors taken into consideration by the facility in making compensation decisions for nurses, if either of these documents exists. Categories of nursing positions not covered by the public access file documentation shall not be covered by the Attestation, and, therefore, such positions shall not be filled or held by H-1C nurses. The facility must maintain the payroll records, as required under the Fair Labor Standards Act at 29 CFR part 516, and make such records available to the Administrator in the event of an enforcement action pursuant to subpart M of this part.