Oregon Revised Statutes Public Health and Safety § 451.540

(1) The county court may, for the purpose of establishing a revolving fund to provide money to finance the construction under ORS 451.410 to 451.585 of those service facilities in the county that may be necessary and in implementation of the master plans provided for in ORS 451.120, levy an ad valorem tax of not to exceed 50 cents per year, for a period not to exceed five years, for each $1,000 of real market value of taxable property within all areas of the county, to be served by the facilities included in the master plan. The revenues derived from the taxes shall be deposited with the county treasurer and credited to the revolving fund. Moneys in the revolving fund shall be disbursed by the county treasurer on order of the county court and used solely for the purposes authorized in ORS 451.410 to 451.610.

(2) The boundaries of the territory within which the tax authorized by subsection (1) of this section may be levied shall be determined by the county court after a public hearing. The county court shall direct the county clerk to publish notice of such hearing once a week for two successive weeks prior to the hearing in a newspaper of general circulation published within the proposed boundaries of the territory or, if there is no such newspaper, in a newspaper of general circulation in the county. Any elector or any owner of property within the territory may appear at the hearing to protest inclusion of the property of the voter within the territory, but the county court shall not exclude land which, in its judgment, will be served by the facilities included in the master plan.