Section 523.140 - Rate increase procedure(1) Whenever any increase is proposed in the existing rates charged geothermal heat consumers by a district pursuant to ORS 523.130, the board of commissioners shall first provide for a public hearing on such proposal before any increased rates are ordered into effect.(2) The public hearing required under subsection (1) of this section shall be held at a place designated by the board after notice thereof has been given by inclusion of a notice of the public hearing in the geothermal heating bills sent to consumers by the district during the period of 30 days prior to the date of the hearing.