Okla. Stat. tit. 82, § 1085.95

Use of loans and grants in conjunction with other financial assistance - Subagreements with owners of private property. A. Loans and grants under the Hazard Mitigation Financial Assistance Program may be used in conjunction with other financial assistance available from the Oklahoma Water Resources Board. B. If a hazard mitigation project includes activities to be conducted on privately owned real property, the loan or grant agreement between the Board and the eligible entity that receives the grant shall contain a provision about any necessary subagreements with the owners of the property.