South Carolina Code of Regulations › Chapter 61 - DEPARTMENT OF HEALTH AND ENVIRONMENTAL CONTROL › Subchapter 61-62 - Air Pollution Control Regulations and Standards › Subchapter 61-62.5 - AIR POLLUTION CONTROL STANDARDS › STANDARD NO. 5.2 - CONTROL OF OXIDES OF NITROGEN (NO[x]) › Section 61-62.5.5.2.III - SECTION III - STANDARD REQUIREMENTS FOR NEW AFFECTED SOURCES

Current through Register Vol. 48, No. 6, June 28, 2024
(A) Those affected
				  sources as defined in Section I(A)(1) and (A)(3) above shall apply
				  NOX controls to achieve the limitations provided in
				  Table 1 of this section. Unless otherwise noted, all emission limits for
				  affected sources required to use Continuous Emissions Monitoring (CEMS) shall
				  be based on thirty (30) day rolling averages.
(B) An affected source may request an
				  alternate control limitation by submitting a demonstration that the alternate
				  limitation is a Case-by-Case NOX Control as defined in
				  Section II above.
(C) The
				  Department reserves the right to request that the owner or operator submit
				  additional information for those affected sources that request alternate
				  control limitation in accordance with Section III(B) above.
(D) Affected sources required to install post
				  combustion technology for the control of NOX shall be
				  required to use post combustion for the control of NOX
				  during the ozone season.
Table 1 - NOX Control
					 Standards
Source Type
Emission Limit
Propane and/or Natural Gas-Fired
								  Boilers
>=10 million British thermal units per hour
								  (MMBtu/hr) and < 100 MMBtu/hr
Low-NOX Burners or
								  equivalent technology, shall achieve 0.036 pounds per million British thermal
								  units (lb/MMBtu)
>=100 MMBtu/hr
Low-NOX Burners + Flue Gas Recirculation or
								  equivalent technology, shall achieve 0.036 lb/MMBtu
Distillate Oil-Fired Boilers
>=10 MMBtu/hr and < 100 MMBtu/hr
Low-NOX Burners or equivalent technology, shall
								  achieve 0.15 lb/MMBtu
>=100 MMBtu/hr
Low-NOX Burners + Flue Gas
								  Recirculation or equivalent technology, shall achieve 0.14 lb/MMBtu
Residual Oil-Fired Boilers
>=10 MMBtu/hr and < 100 MMBtu/hr
Low-NOX Burners or
								  equivalent technology, shall achieve 0.3 lb/MMBtu
>=100 MMBtu/hr
Low-NOX Burners + Flue Gas
								  Recirculation or equivalent technology, shall achieve 0.3 lb/MMBtu
Multiple Fuel Boilers
The emission limits for boilers burning multiple
								  fuels are calculated in accordance with the formulas below. Additional fuels or
								  combination of fuels not otherwise listed in this table shall be addressed on a
								  case-by-case basis.
>=10 MMBtu/hr and < 100 MMBtu/hr
En = [(0.036 lb/MMBtu
								  Hng) + (0.15 lb/MMBtu Hdo) + (0.3
								  lb/MMBtu Hro) + (0.35 lb/MMBtu
								  Hc) + (0.2 lb/MMBtu
								  Hw)]/(Hng +
								  Hdo+ Hro +
								  Hc + Hw)
where:
En is the nitrogen oxides
								  emission limit (expressed as nitrogen dioxide
(NO2)), ng/J (lb/million
								  Btu),
Hng is the heat input from
								  combustion of natural gas, and/or propane,
Hdo is the heat input from
								  combustion of distillate oil,
Hro is the heat input from
								  combustion of residual oil,
Hc is the heat input from
								  combustion of coal, and
Hw is the heat input from combustion of wood
								  residue.
>=100 MMBtu/hr
En = [(0.036 lb/MMBtu
								  Hng) + (0.14 lb/MMBtu Hdo) + (0.3
								  lb/MMBtu Hro) + (0.25 lb/MMBtu Hc) + (0.2 lb/MMBtu Hw)]/(Hng + Hdo+ Hro + Hc +
								  Hw)
where:
En is the nitrogen oxides
								  emission limit (expressed as NO2), ng/J
(lb/million Btu),
Hng is the heat input from
								  combustion of natural gas, and/or propane,
Hdo is the heat input from
								  combustion of distillate oil,
Hro is the heat input from combustion of residual
								  oil,
Hc is the heat input from
								  combustion of coal, and
Hw is the heat input from
								  combustion of wood residue.
Wood Residue Boilers
All types
Combustion controls to minimize
								  NOX emissions or equivalent technology, shall achieve
								  0.20 lb/MMBtu
Coal-Fired Stoker Fed Boilers
< 250 MMBtu/hr
Combustion controls to minimize
								  NOX emissions or equivalent technology, shall achieve
								  0.35 lb/MMBtu
>= 250 MMBtu/hr
Combustion controls to minimize
								  NOX emissions or equivalent technology, shall achieve
								  0.25 lb/MMBtu
Pulverized Coal-Fired Boilers
< 250 MMBtu/hr
Low-NOX Burners +
								  Combustion controls to minimize NOX emissions or
								  equivalent technology, shall achieve 0.35 lb/MMBtu
>= 250 MMBtu/hr
Low-NOX Burners +
								  Combustion controls to minimize NOX emissions +
								  Selective Catalytic Reduction (SCR) or equivalent technology, shall achieve
								  0.14 lb/MMBtu
Municipal Refuse-Fired
								  Boilers
< 250 MMBtu/hr
Combustion modifications to minimize
								  NOX emissions + Flue Gas Recirculation or equivalent
								  technology, shall achieve 195 ppmv at 12 percent CO2
								  (0.35 lb/MMBtu)
>= 250 MMBtu/hr
Staged Combustion and Automatic Combustion Air
								  Control + SCR or equivalent technology, shall achieve 0.18 lb/MMBtu
Internal Combustion Engines
Compression Ignition
Timing Retard
<
4
								  degrees + Turbocharger with Intercooler or equivalent technology, shall achieve
								  490 ppmv at 15 percent O2 (7.64 gram per bhp-hour (gm/bhp-hr))
Spark Ignition
Lean-Burn Technology or equivalent technology,
								  shall achieve 1.0 gm/bhp-hr
Landfill or Digester Gas-Fired
Lean-Burn Technology or equivalent technology,
								  shall achieve 1.25 gm/bhp-hr
Gas Turbines
Simple Cycle - Natural Gas
< 50 Megawatts
Combustion Modifications (for example, dry
								  low-NOX combustors) to minimize
								  NOX emissions or equivalent technology, shall achieve 25
								  ppmv at 15 percent O2 Dry Basis
>= 50 Megawatts
Combustion Modifications (for example, dry
								  low-NOX combustors) to minimize NOx emissions or
								  equivalent technology, shall achieve 9.0 ppmv at 15 percent
								  O2 Dry Basis
Combined Cycle - Natural Gas
< 50 Megawatts
Dry Low-NOX Combustors or equivalent technology,
								  shall achieve 9.0 ppmv at 15 percent O2 Dry Basis
>= 50 Megawatts
Dry Low-NOX Combustors +
								  SCR or equivalent technology, shall achieve 3.0 ppmv at 15 percent
								  O2 Dry Basis
Simple Cycle - Distillate Oil
								  Combustion
< 50 Megawatts
Combustion Modifications and water injection to
								  minimize NOX emissions or equivalent technology, shall
								  achieve 42 ppmv at 15 percent O2 Dry Basis
>= 50 Megawatts
Combustion Modifications and water injection to
								  minimize NOX emissions or equivalent technology, shall
								  achieve 42 ppmv at 15 percent O2 Dry Basis
Combined Cycle - Distillate Oil
								  Combustion
< 50 Megawatts
Dry Low-NOX Combustors with water injection or
								  equivalent technology, shall achieve 42 ppmv at 15 percent
								  O2 Dry Basis
>= 50 Megawatts
Dry Low-NOX Combustors,
								  water injection, and SCR or equivalent technology, shall achieve 10 ppmv at 15
								  percent O2 Dry Basis
Landfill Gas-Fired
Water or steam injection or
								  low-NOX turbine design or equivalent technology, shall
								  achieve 25 ppmv at 15 percent O2 Dry Basis
Fluidized Bed Combustion (FBC)
								  Boiler
Bubbling Bed
Selective Non-catalytic Reduction (SNCR) shall
								  achieve 0.15 lbs/MMBtu
Circulating Bed
SNCR shall achieve 0.07 lbs/MMBtu
Other
Recovery Furnaces
Fourth (4th) level or
								  air to recovery furnace/good combustion practices or equivalent technology,
								  shall achieve 100 ppmv at 8 percent O2 Dry Basis
Cement Kilns
Low-NOX burners or
								  equivalent technology, shall achieve 30 percent reduction from uncontrolled
								  levels.
Lime Kilns
Combustion controls or equivalent technology,
								  shall achieve 175 ppmv at 10 percent O2 Dry
								  Basis.
Fuel Combustion Sources burning any non-specified
								  fuel not listed in Table above. (Examples include but are not limited to
								  process heaters not meeting the definition of "boiler" in Regulation 61-62.1
								  Section I, dryers, furnaces, ovens, duct burners, incinerators, and
								  smelters)
Low-NOX burners or
								  equivalent technology, shall achieve 30 percent reduction from uncontrolled
								  levels.