25 C.F.R. § 517.9
(b) Charges for responding to FOIA requests. The following fees shall be assessed in responding to requests for records submitted under this part, unless a waiver or reduction of fees has been granted pursuant to paragraph (c) of this section:
(c) Statutory waiver. Documents shall be furnished without charge or at a charge below that listed in paragraph (b) of this section where it is determined, based upon information provided by a requester or otherwise made known to the FOIA Officer, that disclosure of the requested information is in the public interest. Disclosure is in the public interest if it is likely to contribute significantly to public understanding of government operations and is not primarily for commercial purposes. Requests for a waiver or reduction of fees shall be considered on a case by case basis. In order to determine whether the fee waiver requirement is met, the FOIA Officer shall consider the following six factors:
(d) Types of requesters. There are four categories of FOIA requesters: Commercial use requesters, educational and non-commercial scientific institutional requesters; representative of the news media; and all other requesters. These terms are defined in § 517.3. The following specific levels of fees are prescribed for each of these categories:
(e) Restrictions on charging fees.
(2) If the Commission fails to comply with the FOIA's time limits for responding to a request, it may not charge search fees or, in cases where records are not sought for commercial use and the request is made by an educational institution, non-commercial scientific institution, or representative of the news media, duplication fees, except as described in paragraphs (e)(2)(i)-(iii) of this section.
(ii) If the FOIA Officer determines that unusual circumstances, as defined by the FOIA, apply and more than 5,000 pages are necessary to respond to the request, then the Commission may charge search fees and duplication fees, where applicable, if the following steps are taken. The FOIA Officer must: