OAR 629-630-0300: Drainage Systems

(1) Operators shall construct dips, grade reversals or other effective water diversions in skid trails and fire trails as necessary to minimize soil displacement and to ensure runoff water is filtered before entering waters of the state. (2) Operators shall drain skid trails by water barring or other effective means immediately following completion of the operation and at all times during the operation when runoff is likely. (3) Operators shall establish effective drainage on landings during and after use.