Okla. Stat. tit. 68, § 68-2938: Basis of application for federal in lieu payments -

Installments.

In making and presenting the application for such payments to

the United States, the county treasurer shall make application for

payments based upon the estimated cost of the public services

available for the benefit of the property in any such project and

the tenants thereon, after taking into consideration the benefits

which may be derived by the county or political subdivision from the

project within its jurisdiction, but the amount shall not be in

excess of the taxes which would result to the county and political

subdivisions for said period if the real property of the project

within the county were taxable. If, after the application is

presented, the United States provides for the payment to be made in

installments, it shall be the duty of the county treasurer to

present a claim or bill to the United States for each installment as

it falls due.