Section 1000.302  Radioactive Emissions to Unrestricted Areas

a)         A person must not possess, use, receive, or transfer licensed material or engage in licensed activities in a way that releases to the air in an unrestricted area radioactive material exceeding the concentration limits specified in Appendix A.  For this Section, concentrations of radioactive material may be averaged over a period not greater than one year.

b)         For this Section, the concentration limits in Appendix A apply at the boundary of the restricted area.  The concentration of radioactive material discharged through a stack, pipe or similar conduit may be determined for the point where the material leaves the conduit.  If the conduit discharges within the restricted area, the concentration at the boundary may be determined by applying established factors for dilution, dispersion, or decay between the point of discharge and the boundary.

(Source:  Amended at 47 Ill. Reg. 6679, effective May 4, 2023)