Figure: 30 TAC §113.2174(d)

Table 4. Class II Emission Limits for Existing Small Municipal Waste Combustion Unita
Pollutant Emission Limitsb Averaging Times Compliance Method
1. Organics:
      Dioxins/Furans
     (total mass basis)		 125 nanograms per dry
standard cubic meter		 3-run average (minimum
run duration is 4 hours)		 Stack test
2. Metals:
      Cadmium		 0.10 milligrams per dry
standard cubic meter		 3-run average (run
duration specified in test
method)		 Stack test
      Lead 1.6 milligrams per dry
standard cubic meter		 3-run average (run
duration specified in test
method)		 Stack test
      Mercury 0.080 milligrams per dry
standard cubic meter
 
85 percent reduction of
potential mercury emissions		 3-run average (run
duration specified in test
method)		 Stack test
      Opacity 10 percent Thirty 6-minute
averages		 Stack test
      Particulate Matter 70 milligrams per dry
standard cubic meter		 3-run average (run
duration specified in test
method)		 Stack test
3. Acid Gases:
      Hydrogen Chloride		 250 parts per million by
volume
            -or-
50 percent reduction of
potential hydrogen chloride
emissions		 3-run average (minimum
run duration is 1 hour)		 Stack test
      Sulfur Dioxide 77 parts per million by dry
volume
            -or-
50 percent reduction of
potential sulfur dioxide
emissions		 24-hour daily block
geometric average
concentration
            -or-
percent reduction		 Continuous emission
monitoring system
4. Other:
      Fugitive Ash		 Visible emissions for no
more than 5 percent of
hourly observation period		 Three 1-hour
observation periods		 Visible emission test

aClass II units mean all small municipal combustion units subject to this division that are located at municipal waste combustion plants with aggregate plant combustion capacity less than or equal to 250 tons per day of municipal solid waste. See §113.2100 of this title for definitions.

bAll emission limits (except for opacity) are measured at 7 percent oxygen.

cNo monitoring, testing, recordkeeping or reporting is required to demonstrate compliance with the nitrogen oxides limit for Class II units.