40 CFR Appendix Table 2 to Subpart BBBB of Part 60 - Table 2 to Subpart BBBB of Part 60—Model Rule—Class I Emission Limits for Existing Small Municipal Waste Combustion Units a

For the following pollutants	You must meet the following emission limits b	Using the following averaging times	And determine compliance by the following methods
1. Organics:
Dioxins/Furans (total mass basis)	30 nanograms per dry standard cubic meter for municipal waste combustion units that do not employ an electrostatic precipitator-based emission control system -or-	3-run average (minimum run duration is 4 hours)	Stack test.
	60 nanograms per dry standard cubic meter for municipal waste combustion units that employ an electrostatic precipitator-based emission control system
2. Metals:
Cadmium	0.040 milligrams per dry standard cubic meter	3-run average (run duration specified in test method)	Stack test.
Lead	0.490 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	3-run average (run duration specified in test method)	Stack test.
	85 percent reduction of potential mercury emissions
Opacity	10 percent	Thirty 6-minute averages	Stack test.
Particulate Matter	27 milligrams per dry standard cubic meter	3-run average (run duration specified in test method)	Stack test.
3. Acid Gases:
Hydrogen Chloride	31 parts per million by dry volume 95 percent reduction of potential hydrogen chloride emissions	3-run average (minimum run duration is 1 hour)	Stack test.
Sulfur Dioxide	31 parts per million by dry volume 75 percent reduction of potential sulfur dioxide emissions	24-hour daily block geometric average concentration 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.

a Class I units mean small municipal waste combustion units subject to this subpart that are located at municipal waste combustion plants with an aggregate plant combustion capacity greater than 250 tons per day of municipal solid waste. See § 60.1940 for definitions.

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