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Fuel combustion operations may be eligible for coverage under the registration permit or general conditional major permit if the facility is comprised of any of the following:

  • Boilers;
  • Emergency generators;
  • Non-emergency generators;
    • Examples: peak-shaving generators
  • Fuel Storage tanks;
  • Ethylene Oxide Sterilizers (hospitals only); and
  • Sources exempt under S.C. Regulation 61-62.1, Section II(B).

Criteria

Registration Permit

  • Maximum size for a single boiler burning fuels other than natural gas and propane is limited to 30 million BTU/hr heat input capacity;
  • The total capacity of all boilers on site is limited to 100 million BTU/hr heat input capacity;
  • Fuel combustion sources at the facility must be fired on natural gas, propane, virgin No. 2 fuel oil, virgin diesel, and biodiesel that meets ASTM D-6751;
  • Non-emergency generators are certified by the manufacturer to meet EPA’s nonroad diesel engine emission standards/tiers;
  • To be exempt from modeling, non-emergency generators are limited to operating no more than 500 hours per year; and
  • Facility is a true minor source.

General Conditional Major Operating Permit

  • Maximum size of a single boiler must be less than 100 million BTU/hr rated input capacity.
  • Only the following fuels may be used: natural gas, propane, virgin fuel oil (sulfur content equal to or less than 2.1% by weight), biodiesel that meets ASTM D-6751 and used spec oil as defined in S.C. Regulation 61-62.1, Section I.
  • Each criteria pollutant is limited to less than 100 tons per year (TPY);
  • Single hazardous air pollutant (HAP) is limited to less than 10 TPY; and
  • Combined HAPs are limited to less than 25 TPY.

How Do I Apply for the General or Registration Permit?

Paper applications for all non-Title V sources will no longer be accepted after Feb. 1, 2025.  All submissions should be submitted through ePermitting.*

*If operations, normally covered by construction permits, are located in one of the eight coastal counties of the Coastal Zone under SCDES-Bureau of Coastal Management's jurisdiction (Beaufort, Berkeley, Charleston, Colleton, Dorchester, Georgetown, Horry, and Jasper), then a coastal zone consistency certification may be required.

Emission Estimator Tools

  • Fuel Combustion Calculator - this spreadsheet calculates Criteria Pollutant emissions from combustion sources using emission factors.

Reporting Tool

Air Permitting Contacts