The forage provisions of this chapter apply to all areas where livestock are grazed, and where forage is grown for livestock feed. The ambient action levels apply to areas where fluoride sensitive vegetation is grown for commercial purposes and in public land use areas, such as parks, where fluoride damage to vegetation would adversely impact the use and enjoyment of the area. The ambient action levels are independent of the forage standards and are not designed to relate to potential concentrations in forage.