Rule 25-30.120 requires Commission-regulated water and wastewater utilities to remit regulatory assessment fees based upon their gross operating revenues. The rule amendment would include directives for the filing of either a 15-day or a 30-day extension of the due date for the payment of regulatory assessment fees or regulatory assessment fee return form due date, and would provide that requests for extension will not be granted if the company has any unpaid regulatory assessment fees, penalties, or interest due from a prior period. The Regulatory Assessment Fee Extension Request form would require a statement of good cause for the extension request, as required by Section 350.113(5), FS. The rule is also amended to delete provisions that are no longer necessary.