The NC Division of Air Quality (DAQ) is currently accepting public comments on several changes to the NC air toxics program, including the following:

  • Exemptions for natural gas and propane combustion sources having a facility-wide combined heat input of less than 450 MMBtu/hr that are the only sources of benzene emissions at a facility;
  • Exemptions for emergency engines having a facility-wide combined heat input of less than 4,843 horsepower that are the only sources of formaldehyde at a facility;
  • Substantially increasing the toxics permitting emission rates requiring permitting (TPERs) for unobstructed stacks;
  • Formalization of the exemption from permitting for emissions sources subject to maximum achievable control technology (MACT) standards; and
  • Increasing the TPER and ambient allowable levels (AALs) for arsenic.

The NC DAQ will be discussing the proposed changes during a public meeting at 3 P.M. on September 19, 2013 at the main NC Division of Environment and Natural Resources central office located at 217 West Jones Street in Raleigh. The official end of the public comment period ends on October 14, 2013.