The Texas Railroad Commission regulates the disposal of oil and gas NORM under Environmental Protection, Subchapter F, Oil and Gas NORM. Subchapter F establishes the requirements for oil and gas NORM waste disposal for the purpose of protecting public health and the environment. Oil and gas NORM waste is defined as any solid, liquid, or gaseous material or combination of materials (excluding source material, special nuclear material, and by-product material) that spontaneously emits radiation in its natural physical state, is discarded or unwanted, constitutes, is contained in, or has contaminated oil and gas waste, and exceeds the exemption criteria specified in 25 Texas Administrative Code 289.259(d)(1)(B) and (d)(2) prior to treatment or processing that reduces the radioactivity concentration.