Radioactive materials
A1 and A2 values, Minn. Rules 4731.0422
Annual limits on intake, Minn. Rules 4731.2750
Derived air concentrations, Minn. Rules 4731.2750
Exempt concentrations, Minn. Rules 4731.3140
Exempt quantities, Minn. Rules 4731.3145
Nationally tracked source thresholds, Minn. Rules 4731.2820