Okla. Stat. tit. 82, § 82-1324.12

Plans, specifications, proposed operating budget, schedules of

unit fees and benefit units, rules and regulations, estimates of

cost for any proposed improvement authorized by this act shall be

filed with the secretary of the district. The total benefits of any

such improvement shall be divided into a suitable number of benefit

units. Upon determining a schedule of benefit units and unit fees,

the board of directors shall cause a declaration of availability of

such units for subscription to be entered in its minutes and except

for residents of cities and towns as provided in paragraph 5 of

Section 1324.2 of this title any individual who fails to become a

participating member within thirty (30) days thereafter shall not be

eligible to hold office as a director, nor shall any individual,

firm, partnership, association, or corporation which fails to become

a participating member within ninety (90) days after such

declaration be qualified to participate at any meeting or vote at

any election held thereafter unless such individual, firm,

partnership, association, or corporation shall thereafter become a

participating member. Each landowner within the district shall

subscribe to a number of such units in proportion to the extent he

desires to participate in the benefits of the improvements. As long

as the capacity of the district's facilities permits, participating

members of the district may subscribe to additional units upon

payment of a unit fee for each such unit. Owners or tenants of land

located within the district who are not participating members may

subscribe to such units as the Board in its discretion may grant,

and upon payment of the unit fee for each such unit shall be

entitled to the same rights as original participating members.