Figure:  25 TAC §289.202(ee)(4)(A)(ii)

Contaminant Maximum Permissible Limits
  pCi/cm2 * dpm/cm2
Beta-gamma emitting
radionuclides;  all
radionuclides with half-
lives less than 10 days;
natural uranium; natural
thorium, uranium-235;
uranium-238; thorium-232;
thorium-228; and thorium-
230 when contained in ores
or physical concentrates….
100 220
All other alpha emitting
radionuclides….
10 22


* To convert picocuries (pCi) to SI units of millibecquerels, multiply the values by 37.