(1) No licensee shall discharge radioactive material into a sanitary sewerage system unless:

(a) it is readily soluble or dispersible in water; and

(b) the quantity of any radioactive material released into the system by the licensee in any 1 day does not exceed the larger of:

(i) the quantity which, if diluted by the average daily quantity of sewage released into the sewer by the licensee, will result in an average concentration equal to the limits specified in Appendix A, Table I, Column 2, of this subchapter, or

(ii) ten times the quantity of such material specified in Appendix B of this subchapter; and

(c) the quantity of any radioactive material released in any 1 month, if diluted by the average monthly quantity of water released by the licensee, will not result in an average concentration exceeding the limits specified in Appendix A, Table I, Column 2, of this subchapter; and

(d) the gross quantity of radioactive material released into the sewerage system by the licensee does not exceed 1 curie per year.

(2) Excreta from individuals undergoing medical diagnosis or therapy with radioactive material shall be exempt from any limitations contained in this rule.