Oregon Revised Statutes Utility Regulation § 759.665

A just and reasonable rate shall assure the telecommunications utility or people's utility district the recovery from the licensee of not less than all the additional costs of providing and maintaining pole attachment space for the licensee nor more than the actual capital and operating expenses, including just compensation, of the telecommunications utility or people's utility district attributable to that portion of the pole, duct or conduit used for the pole attachment, including a share of the required support and clearance space in proportion to the space used for pole attachment above minimum attachment grade level, as compared to all other uses made of the subject facilities and uses which remain available to the owner or owners of the subject facilities.