(a) If the number of registered devices increases, prior to operation of the new devices the owner or operator must submit:(1) a change notice in a manner prescribed by the department;(2) documentation of a device performance review for all new devices in a manner acceptable to the department; and(3) the fee required under §97.70.(b) If the number of registered devices decreases, the owner or operator must submit notice in a manner approved by the department or omit the devices when submitting a renewal application.