Or. Admin. R. 333-120-0310
(1) When it is not practicable to apply process or other engineering controls to control the concentrations of radioactive material in air to values below those that define an airborne radioactivity area, the licensee must, consistent with maintaining the total effective dose equivalent ALARA, increase monitoring and limit intakes by one or more of the following means:
ORS 453.635
ORS 453.605 - 453.807
PH 4-2007, f. & cert. ef. 3-1-07
PH 12-2006, f. & cert. ef. 6-16-06
HD 15-1994, f. & cert. ef. 5-6-94