Section 120.253 - Discharge by Release into Sanitary Sewerage(A) A licensee may discharge licensed material into sanitary sewerage if each of the following conditions is satisfied:(1) the material is readily soluble, or is readily dispersible biological material, in water;(2) the quantity of licensed radioactive material that the licensee releases into the sewer in one month divided by the average monthly volume of water released into the sewer by the licensee does not exceed the concentration listed in 105 CMR 120.296: Appendix B, Table III; and(3) if more than one radionuclide is released, the following conditions must also be satisfied: (a) the licensee shall determine the fraction of the limit in 105 CMR 120.296: Appendix B, Table III represented by discharges into sanitary sewerage by dividing the actual monthly average concentration of each radionuclide released by the licensee into the sewer by the concentration of that radionuclide listed in 105 CMR 120.296: Appendix B, Table III; and(b) the sum of the fractions for each radionuclide required by 105 CMR120.253(A)(3)(a) does not exceed unity; and(4) the total quantity of licensed or other radioactive material that the licensee releases into the sanitary sewerage in a year does not exceed five curies (185 gigabecquerels) of hydrogen-3, one curie (37 gigabecquerels) of carbon-14, and one curie (37 gigabecquerels) of all other radioactive materials combined.(B) Excreta from individuals undergoing medical diagnosis or therapy with radioactive material are not subject to the limitations contained in 105 CMR 120.253(A).Amended by Mass Register Issue 1373, eff. 9/7/2018.