Or. Admin. R. 250-010-0710 – Existing Structures

(1) Any repairs or maintenance of a floating structure, including those existing structures placed on the waters of this state prior to January 1, 1992, shall comply with provisions as specified in OAR 250-010-0705.
(2) Repairs or maintenance to existing encapsulated foam flotation that was encapsulated with the following previously approved of materials and methods of encapsulation, and was installed before January 1, 2019, are exempt from the requirements in OAR 250-010-0710(1) and may be repaired or maintained in accordance with OAR 250-010-0705 or with like materials and in a like manner to the existing encapsulation material and method:
1. (a) Treated dimensional wood, 1.5 inches (actual) or more in thickness.
2. (b) Treated plywood 0.5 inches or more in thickness.
3. (c) Pliable (soft) plastic sheets, 7 mils or more in thickness, chemically or securely bonded.
(3) Any alteration or addition of an existing floating structure which leads to an increase in the square footage of that floating structure, must comply with the provisions as specified in OAR 250-010-0705.

ORS 830.110

ORS 830.110 & ORS 830.955