North Dakota Administrative Code
Title 33.1 - Department of Environmental Quality
Article 33.1-20 - Solid Waste Management and Land Protection
Chapter 33.1-20-11 - Landfill Disposal Of Technologically Enhanced Naturally Occurring Radioactive Material Waste
Section 33.1-20-11-01 - Radioactive waste disposal

1. TENORM waste up to, but not exceeding 50.0 picocuries per gram of radium-226 plus radium-228, may be disposed in a landfill which complies with 33.1-20-07.1 or 33.1-20-10, except that the accumulated amount must not exceed twenty-five thousand tons [22,679.22 metric tons] per year or three thousand tons [2,721.55 metric tons] in any one month unless larger amounts in one month resulting from special cleanup projects are preapproved by the department. Drums or shipping containers of TENORM waste which are not of uniform concentration must not exceed an average concentration of 50.0 picocuries per gram of radium-226 plus radium-228.

2. Equipment contaminated with TENORM which does not exceed a maximum exposure level of one hundred microroentgen per hour, including background radiation, at any accessible location may be disposed in a landfill which complies with 33.1-20-07.1 or 33.1-20-10.

3. TENORM waste must be covered by at least one foot of non-TENORM waste or daily cover material by the end of each operating day. For landfills that operate continuously (twenty-four hours per day), all TENORM waste shall be covered at least once every twenty-four hour period.

4. TENORM waste must be disposed at depth greater than ten feet below the surface of the final landfill cover.

5. For a landfill that is subject to 33.1-20-07.1, if any part of the final cover has slope greater than fifteen percent, then the final cover must have an additional two feet of low permeability soil, for a total minimum cover thickness of five feet.