As a condition of the permit, the producer must allow personnel from the TDEC or the U.S. EPA to inspect the regulated CAFO. They are required to present their credentials and will only inspect a facility “at reasonable times.” This does not mean that they may only inspect the facility at the owner’s convenience. It simply means that most inspections will be conducted during normal business hours. Large CAFOs are required to undergo a yearly inspection at a minimum. Medium CAFOs may be inspected less often.
"W088-CAFO Inspections," The University of Tennessee Agricultural Extension Service, , http://trace.tennessee.edu/utk_agexani/57