43 CFR § 2932.55
When must I allow BLM to examine my permit records?
June 11, 2020
(a) You must make your permit records available upon BLM request. BLM will not ask to inspect any of this material later than 3 years after your permit expires.
(b) BLM may examine any books, documents, papers, or records pertaining to your Special Recreation Permit or transactions relating to it, whether in your possession, or that of your employees, business affiliates, or agents.