For the purposes of section 81(2)(b)(ii) of the Act, the prescribed fee for an application to register or renew the registration of a cooling tower system is the amount calculated by multiplying the number of cooling towers in the cooling tower system by the number of fee units applicable for each period of registration—
(a) one year, 7·5 fee units; or
(b) 2 years, 14 fee units; or
(c) 3 years, 20·5 fee units.