Okla. Stat. tit. 17, § 17-159.20: Petition for service

Upon the petition of any person not served by an existing

transportation line or by a transportation line for which a

certificate has been issued, the Commission may cause the same to be

set for hearing and give due and proper notice in writing at least

ten (10) days prior to the date of hearing to all persons holding

certificates nearest to those requesting service and to the

municipal officers of all municipalities served or to be served by

such water transportation companies, and by publication once a week

for two (2) consecutive weeks in a newspaper or newspapers of

general circulation in the county or counties in which the line is

proposed to be constructed. If at such hearing the Commission finds

from competent evidence that the public convenience and necessity

require the furnishing of water transportation service to the

petitioners, it shall have the further power to order and direct the

person holding a certificate who can most economically extend its

service so as to furnish efficient water transportation service to

the petitioners to so extend its line. It shall not make an order

so requiring unless it finds, from substantial evidence, that the

person so ordered to serve is earning a fair return on the fair

value of its water transportation line and the rendition of service

to the petitioners will not prevent the person so ordered to serve

from earning a fair return on the fair value of its water

transportation line.