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Subpart AAAA - Standards of Performance for Small Municipal Waste Combustion Units for Which Construction is Commenced After August 30, 1999 or for Which Modification or Reconstruction is Commenced After June 6, 2001

RegSenseAir QualityCFR SubpartCFR RegulationsEnvironmental Protection Agency (EPA)EnvironmentalAir QualityFocus AreaEnglishAir ProgramsUSA

Table 1 to Subpart AAAA of Part 60 - Emission Limits for New Small Municipal Waste Combustion Units

For the following pollutantsYou must meet the
following emission limits a		Using the following
averaging times		And determine compliance by the following methods
a All emission limits (except for opacity) are measured at 7 percent oxygen.
b 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 more than 250 tons per day of municipal solid waste. See §60.1465 for definitions.
c Class II 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 no more than 250 tons per day of municipal solid waste. See §60.1465 for definitions.
d No monitoring, testing, recordkeeping, or reporting is required to demonstrate compliance with the nitrogen oxides limit for Class II units.
1. Organics
Dioxins/Furans (total mass basis)13 nanograms per dry standard cubic meter3-run average (minimum run duration is 4 hours)Stack test.
2. Metals:
Cadmium0.020 milligrams per dry standard cubic meter3-run average (run duration specified in test method)Stack test.
Lead0.20 milligrams per dry standard cubic meter3-run average (run duration specified in test method)Stack test.
Mercury0.080 milligrams per dry standard cubic meter or 85 percent reduction of potential mercury emissions3-run average (run duration specified in test method)Stack test.
Opacity10 percentThirty 6-minute averagesStack test.
Particulate Matter24 milligrams per dry standard cubic meter3-run average (run duration specified in test method)Stack test.
3. Acid Gases:
Hydrogen Chloride25 parts per million by dry volume or 95 percent reduction of potential hydrogen chloride emissions3-run average (minimum run duration is 1 hour)Stack test
Nitrogen Oxides (Class I units) b150 (180 for 1st year of operation) parts per million by dry volume24-hour daily block arithmetic average concentrationContinuous emission monitoring system.
Nitrogen Oxides (Class II units) c500 parts per million by dry volumeSee footnote dSee footnote d
Sulfur Dioxide30 parts per million by dry volume or 80 percent reduction of potential sulfur dioxide emissions24-hour daily block geometric average concentration or percent reductionContinuous monitoring emission system.
4. Other:
Fugitive AshVisible emissions for no more than 5 percent of hourly observation periodThree 1-hour observation periodsVisible emission test.

Table 2 to Subpart AAAA of Part 60 - Carbon Monoxide Emission Limits for New Small Municipal Waste Combustion Units

Table 3 to Subpart AAAA of Part 60 - Requirements for Validating Continuous Emission Monitoring Systems (CEMS)

For the following continuous emission monitoring systemsUse the following methods in appendix A of this part to validate pollutant concentration levelsUse the following methods in appendix A of this part to measure oxygen (or carbon dioxide)
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 more than 250 tons per day of municipal solid waste. See §60.1465 for definitions.
1. Nitrogen Oxides (Class I units only) aMethod 7, 7A, 7B, 7C, 7D, or 7EMethod 3 or 3A.
2. Sulfur DioxideMethod 6 or 6CMethod 3 or 3A.
3. Carbon MonoxideMethod 10, 10A, or 10BMethod 3 or 3A.

Table 4 to Subpart AAAA of Part 60 - Requirements for Continuous Emission Monitoring Systems (CEMS)

For the following pollutantsUse the following span values for your CEMSUse the following performance specifications in appendix B of this part for your CEMSIf needed to meet minimum
data requirements, use the
following alternate methods
in appendix A of this part
to collect data
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 more than 250 tons per day of municipal solid waste. See §60.1465 for definitions.
1. Opacity100 percent opacityP.S. 1Method 9.
2. Nitrogen Oxides (Class I units only) aControl device outlet: 125 percent of the maximum expected hourly potential nitrogen oxides emissions of the municipal waste combustion unitP.S. 2Method 7E.
3. Sulfur DioxideInlet to control device: 125 percent of the maximum expected sulfur dioxide emissions of the municipal waste combustion unit. Control device outlet: 50 percent of the maximum expected hourly potential sulfur dioxide emissions of the municipal waste combustion unitP.S. 2Method 6C.
4. Carbon Monoxide125 percent of the maximum expected hourly potential carbon with monoxide emissions of the municipal waste combustion unitP.S. 4AMethod 10 alternative interference trap.
5. Oxygen or Carbon Dioxide25 percent oxygen or 25 percent carbon dioxideP.S. 3Method 3A or 3B.

Table 5 to Subpart AAAA of Part 60 - Requirements for Stack Tests

To measure the following pollutantsUse the following methods in appendix A of this part to determine the sampling locationUse the methods in appendix A of this part to measure pollutant concentrationAlso note the following additional information
a Must simultaneously measure oxygen (or carbon dioxide) using Method 3A or 3B in appendix A of this part.
b Use CEMS to test sulfur dioxide, nitrogen oxide, and carbon monoxide. Stack tests are not required except for quality assurance requirements in appendix F of this part.
1. Organics:
Dioxins/FuransMethod 1Method 23 aThe minimum sampling time must be 4 hours per test run while the municipal waste combustion unit is operating at full load.
2. Metals:
CadmiumMethod 1Method 29 aCompliance testing must be performed while the municipal waste combustion unit is operating at full load.
LeadMethod 1Method 29 aCompliance testing must be performed while the municipal waste combustion unit is operating at full load.
MercuryMethod 1Method 29 aCompliance testing must be performed while the municipal waste combustion unit is operating at full load.
OpacityMethod 9Method 9Use Method 9 to determine compliance with opacity limit. 3-hour observation period (thirty 6-minute averages).
Particulate MatterMethod 1Method 5 aThe minimum sample Matter volume must be 1.0 cubic meters. The probe and filter holder heating systems in the sample train must be set to provide a gas temperature no greater than 160 ±14°C. The minimum sampling time is 1 hour.
3. Acid Gases: b
Hydrogen ChlorideMethod 1Method 26 or 26A aTest runs must be at least 1 hour long while the municipal waste combustion unit is operating at full load.
4. Other: b
Fugitive AshNot applicableMethod 22 (visible emissions)The three 1-hour observation period must include periods when the facility transfers fugitive ash from the municipal waste combustion unit to the area where the fugitive ash is stored or loaded into containers or trucks.
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