The filing fee to accompany the notice of intention to organize a bank or trust company shall be that established by WAC 208-512-045, as now or hereafter amended. If the application is withdrawn by applicants before a field investigation is undertaken a refund will be made based upon retention of that portion deemed adequate to cover processing and preliminary investigation costs. The retained portion shall be the greater of:

(1) $500.00, or

(2) Estimated number of hours times the current hourly rate as established by WAC 208-512-045 as devoted to processing and preliminary review and investigation.