Each holder of a fixed nuclear facility construction permit or operating license issued by the United States Nuclear Regulatory Commission or an operator of any other fixed nuclear facility shall submit an annual fee for the services received. This fee shall recover for the State the actual expenses arising from emergency response activities, including training. Costs of activities benefiting more than one facility shall be prorated. The executive director shall send an invoice after completion of emergency response activities held before August 31 of each year. Payment shall be made within 30 days following the date of the invoice.