Section 310.246 - Adjustment of permanent rate limit to correct mistakes by June 30, 1998(1) The Department of Revenue may adjust the permanent rate limits for operating taxes established under ORS 310.200 to 310.242 to correct for mistakes. All adjustments by the department must be made by June 30, 1998.(2) No change to the assessment and tax roll shall be made as the result of an adjustment under this section.