43 CFR §429.22

1. (a)After you receive your use authorization, Reclamation may charge you for additional administrative costs incurred for activities such as:
   1. (1)Monitoring your authorized use over time to ensure compliance with the terms and conditions of your use authorization; and
   2. (2)Periodic analysis of your long-term use to adjust your use fee to reflect current conditions.
2. (b)If your additional payment is not received by Reclamation within 90 days after notification to you in writing of the additional administrative costs, Reclamation may take action to terminate your use authorization.