Oregon Department of Forestry Rule Rule 629-625-0300 Road Design (1)The purpose of OARs 629-625-0300 (Road Design) through 629-625-0340 (Waste Disposal Areas) is to provide design specifications for forest roads that protect water quality. (2)Operators shall design and construct roads to limit the alteration of natural slopes and drainage patterns to that which will safely accommodate the anticipated use of the road and will also protect waters of the state.