Wisconsin Administrative Code › Department of Natural Resources › NR 400-499 - Environmental Protection - Air Pollution Control › Chapter NR 446 - Control Of Mercury Emissions › Subchapter I - General Provisions › Section NR 446.04 - Procedures for determining annual mercury emissions

Current through June 24, 2024
Except as provided in subchs. II, III and IV, beginning on
					 January 1, 2005, the owner or operator of a major stationary source shall
					 calculate annual mercury emissions using the procedures and methods in this
					 section.
(1) STATIONARY SOURCE
				  COMBUSTION UNIT.
(a) The owner or operator of
				  a combustion unit at the source which is not subject to subchs. II, III and IV
				  shall calculate annual mercury emissions using the procedures of this
				  subsection for each emissions unit and shall provide all associated data to the
				  department.
(b) The owner or
				  operator shall determine the mass mercury content of each fuel by multiplying
				  the mercury content of the fuel times the amount of the fuel consumed. The
				  mercury content of the fuel shall be determined either through testing
				  according to the procedures in ASTM D3684-01, incorporated by reference in s.
				  NR
				  484.10(47m), or an equivalent method
				  approved by the department, or from published data which lists the mercury
				  content of the specific fuel.
(c)
1. Except as provided in subd. 2., the owner
				  or operator shall calculate the removal efficiency of mercury by air pollution
				  control equipment for each fuel used, except natural gas and fuel oil, based on
				  source performance tests on the equipment conducted according to the following
				  methods and procedures:
a. The source
				  performance tests shall be conducted according to Method 101A in Appendix B of
				  , incorporated by reference in s.
				  NR
				  484.04(23); Method 29 in Appendix A
				  of , incorporated by reference in s.
				  NR
				  484.04(20m); Method 30A or 30B in
				  Appendix A of , incorporated by reference in s.
				  NR
				  484.04(20s) and (20t) respectively;
				  or ASTM D6784-02, incorporated by reference in s.
				  NR
				  484.10(55x).
b. A sample of the fuel burned during the
				  test shall be analyzed for mercury content, using ASTM D3684-01, incorporated
				  by reference in s.
				  NR
				  484.10(47m), or an equivalent method
				  approved by the department. During each of the 3 runs of the performance test,
				  a separate sample of the fuel being burned during the run shall be collected
				  and analyzed.
c. During the source
				  performance testing, the consumption of fuel shall be monitored and
				  recorded.
2. Instead of
				  conducting a source performance test under subd. 1., information derived from
				  performance testing of other combustion units which are similar in terms of the
				  type of combustion unit, particulate control equipment, fuel characteristics,
				  and operating parameters may be used if the performance test was conducted
				  according to the procedures in subd. 1.
(d) The owner or operator shall determine the
				  annual mercury emissions by subtracting the mass mercury removed by air
				  pollution control equipment from the mass mercury in the fuel.
(e) Nothing in this section shall prohibit
				  the department from requiring other methods of determining annual mercury
				  emissions.
(f) The owner or
				  operator of a combustion source subject to this subsection may request that the
				  department approve alternative methods for determining annual mercury
				  emissions