U.S. Environmental Protection Agency April 13, 2011 Final Rules to Reduce Air Toxics from Boilers.

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Presentation transcript:

U.S. Environmental Protection Agency April 13, 2011 Final Rules to Reduce Air Toxics from Boilers

Overview 2 Final Boiler Air Toxics Rules for Major and Area Sources Background Benefits, costs, and impact on jobs Reconsideration Overview requirements

Overview of EPA actions On March 21, 2011 EPA issued three separate but related rules for: Boilers at large sources of air toxics (major sources) Boilers at small sources of air toxics (area sources) Incinerators that burn solid waste at industrial and commercial facilities (CISWI) EPA also issued a final rule that defines solid waste Necessary to determine whether a facility has to meet a boiler standard or an incinerator standard A federal court required EPA to issue these standards no later than February 21. Prior Administrations standards were overturned in court. Final standards signed on February 21, 2011 Final Rules published in the Federal Register on March 21, 2011 EPA also initiated a reconsideration of the final rules for boilers and CISWI 3

How are these rules related? Units that burn SOLID WASTE are subject to requirements under CAA section 129 Units that burn materials that are NOT A SOLID WASTE are subject to requirements under CAA section 112 4

Differences Between the Boilers and CISWI Rules Boilers (sec. 112) Major sources (10 tons of any one toxic/25 tons of all toxics annually) Standards must be set for all emitted toxic air pollutants Limits must be based on maximum achievable control technology (MACT) Area sources Smaller sources (not major) may be regulated based on less stringent generally available control technology (GACT) Exception for certain pollutants (e.g., mercury, polycyclic organic matter) CISWI units (sec. 129) Standards must be set for 9 specific pollutants, not all of which are air toxics Additional siting and operator training requirements No provision authorizing GACT for smaller sources

Reconsideration EPA is initiating a reconsideration of certain aspects of the two boiler rules and Commercial Solid Waste Incinerator (CISWI) rule Published a notice of reconsideration in Federal Register March 21, 2011 Final rules reflect reasonable approaches consistent with requirements of Clean Air Act. Some of the comments raise difficult technical issues that would benefit from additional public involvement. Stakeholders may petition for reconsideration of other issues. 6

Benefits and Costs of These Rules For every $1 that these rules will cost society, the public will see at least $10 to $24 in public health benefits. Installing and maintaining pollution controls for these rules is estimated to cost $2.1 billion per year. Costs of the combined final rules are about 50 percent less than at proposal. These rules will create jobs Analysis of the major and area source boiler rules positive and negative impacts on employment indicate that they alone will create a net gain of about 2,200 jobs. 7

Major Source Boiler Rule National Emission Standard for Hazardous Air Pollutants (NESHAP) for Major Sources: Industrial, Commercial, and Institutional Boilers and Process Heaters 40 CFR Part 63 Subpart DDDDD 8

Boilers and process heaters at major sources (i.e., Boiler MACT) Expected to apply to about 13,800 boilers located at 1,600 facilities, primarily larger industrial sources such as refineries, chemical and manufacturing plants, pulp and paper mills Also includes boilers at some larger commercial and institutional facilities, such as shopping malls and universities Standards vary slightly for existing units vs. new units 9

Establishing MACT standards Section 112 of 1990 Clean Air Act Amendments Required Maximum Achievable Control Technology (MACT) standards for relevant categories For existing sources, at least as stringent as the average of the best performing 12 percent of sources in the subcategory. For new sources, at least as stringent as the emission control achieved by the best controlled similar source. Section 112 allows the Administrator to set work practice standards (such as an annual tune-up requirement) in certain limited situations. Section 112 allows the Administrator to subcategorize, which allows similar equipment to be treated similarly. 10

11 Boiler MACT – Final Subcategories Fifteen subcategories based on design type: Solid fuel Pulverized coal units Coal-fired stokers Coal-fired fluidized bed combustion units Biomass-fired stokers Biomass-fired fluidized bed combustion units Biomass-fired Dutch Ovens/Suspension burners Biomass-fired fuel cells Biomass-fired hybrid suspension/grate units Liquid fuel-fired units Liquid fuel-fired units located in non-continental States and territories Gas 1 (Natural gas/refinery gas) Gas 2 (other gases) Metal processing furnaces (natural gas-fired) Limited Use

Major source boiler rule: Compliance requirements Existing large boilers (>=10mm/BTU) Clean gas (natural gas, refinery gas, or process gas as clean as natural gas) Annual tune-up No numeric emission limits 1-time energy assessment Solid fuel (coal or biomass) Numeric emission limits for 5 pollutants mercury, dioxin, particulate matter (PM), hydrogen chloride (HCl), carbon monoxide (CO) 1-time energy assessment Oil Numeric emission limits for 5 pollutants mercury, dioxin, particulate matter (PM), hydrogen chloride (HCl), carbon monoxide (CO) 1-time energy assessment Process gas that is not clean gas Numeric emission limits for 5 pollutants mercury, dioxin, particulate matter (PM), hydrogen chloride (HCl), carbon monoxide (CO) 1-time energy assessment Limited Use Tune-up every other year 1-time energy assessment No numeric emission limits 12

Major source boiler rule: Compliance requirements New large boilers (>=10mm/BTU) Clean gas (natural gas, refinery gas, or process gas as clean as natural gas) Annual tune-up No numeric emission limits Solid fuel (coal or biomass) Numeric emission limits for 5 pollutants mercury, dioxin, particulate matter (PM), hydrogen chloride (HCl), carbon monoxide (CO) Oil Numeric emission limits for 5 pollutants mercury, dioxin, particulate matter (PM), hydrogen chloride (HCl), carbon monoxide (CO) Process gas that is not clean gas Numeric emission limits for 5 pollutants mercury, dioxin, particulate matter (PM), hydrogen chloride (HCl), carbon monoxide (CO) Limited Use Tune-up every other year No numeric emission limits 13

Major source boiler rule: Compliance requirements Existing small boilers (<10mm/BTU) Gas, solid fuel, oil, or limited use Tune-up every other year 1-time energy assessment No numeric emission limits New small boilers (<10mm/BTU) Gas, solid fuel, oil, or limited use Tune-up every other year No numeric emission limits 14

Boiler MACT Testing and Monitoring Requirements Boilers 10 million Btu/hour or greater with emission limits Testing requirements Initial and annual stack tests*: PM, mercury, HCl, CO Initial stack test only: Dioxin/furan Establish operating parameter limits during initial tests: For example, pressure drop, injection rate, power input, oxygen Monitoring requirements Continuous process parameter or opacity * performance tests can be conducted less often than annually if emissions are at or below 75 percent of emission limit, and no changes in operation or air pollution control 15

Boiler MACT Rule – Initial Notification and Compliance Dates Existing Sources (commenced construction before June 4, 2010) Must comply by March 21, 2014 Initial notification due September 17, 2011 New Sources (commenced construction on or after June 4, 2010) Must comply by May 20, 2011, or upon startup, whichever is later Initial Notification If startup before May 20, 2011, due September 17, 2011 If startup on or after May 20, 2011, due 15 days after startup 16

Area Source Boiler Rule National Emission Standard for Hazardous Air Pollutants (NESHAP) for Area Sources: Industrial, Commercial, and Institutional Boilers 40 CFR Part 63 Subpart JJJJJJ 17

Boilers at area sources (i.e., Boiler Area Source Rule) An area source facility emits or has potential to emit less than 10 tons per year (tpy) of any single HAP and less than 25 tpy of any combination of HAP. Expected to apply to about 187,000 boilers located primarily at commercial facilities (e.g., hotels, office buildings, restaurants) and institutional facilities (e.g., schools, hospitals, prisons) Rule does NOT apply to boilers that are gas-fired Standards vary slightly for existing units vs. new units 18

Establishing GACT Standards Methods, practices and techniques which are commercially available and appropriate for application by sources in the category considering economic impacts and the technical capabilities of the firms to operate and maintain the emissions control systems 19

Area Source Subcategories Oil subcategory Any boiler that burns any liquid fuel and is not in biomass or coal subcategories. Gas-fired boilers that burn liquid fuel during periods of gas curtailment, gas supply emergencies, or periodic testing up to 48 hours per calendar year not included Coal subcategory Any boiler that burns solid fossil fuel and no more than 15 percent biomass on an annual heat input basis Biomass subcategory Any boiler that burns at least 15 percent biomass on an annual heat input basis 20

Area source boiler rule: Compliance requirements Existing large boilers (>=10mm/BTU) Gas (all types) No requirements, not covered by rule Coal Numeric emission limits for 2 pollutants mercury, carbon monoxide (CO) 1-time energy assessment Biomass, Oil Tune-up every other year 1-time energy assessment No numeric emission limits Existing small boilers (<10mm/BTU) Gas (all types) No requirements, not covered by rule Coal, Biomass, Oil Tune-up every other year No numeric emission limits 21

Area source boiler rule: Compliance requirements New large boilers (>=10mm/BTU) Gas (all types) No requirements, not covered by rule Coal Numeric emission limits for 3 pollutants mercury, carbon monoxide (CO), particulate matter (PM) Biomass, Oil Numeric emission limit for 1 pollutant particulate matter (PM) Tune-up every other year New small boilers (<10mm/BTU) Gas (all types) No requirements, not covered by rule Coal, Biomass, Oil Tune-up every other year No numeric emission limits 22

Area Source Rule Testing and Monitoring Requirements Boilers 10 million Btu/hour or greater with emission limits Testing requirements Initial and triennial stack tests: PM, mercury, CO (as applicable) Establish operating parameter limits during initial tests: For example, pressure drop, injection rate, power input, oxygen Monitoring requirements Continuous process parameter or opacity 23

Area Source Rule – Initial Notification and Compliance Dates Existing Sources (commenced construction before June 4, 2010) Tune-up required by March 21, 2012 Compliance with emission limits and energy assessment by March 21, 2014 Initial notification due September 17, 2011 New Sources (commenced construction on or after June 4, 2010) Must comply by May 20, 2011, or upon startup, whichever is later Initial notification due September 17, 2011, or 120 days after the source becomes subject to the standard 24

For more information on the boiler rules: Contact for Sources in New England: Susan Lancey U.S. EPA New England

Appendix-Emission Limit Tables Boilers and CISWI 26

Emission Limits for Major Source Boilers SubcategoryProposed limits, lb/MMBtu unless notedFinal limits, lb/MMBtu unless noted Hg, lb/TBtuHClPMCO, ppmD/F, ng/dscmHg, lb/TBtuHClPMCO, ppmD/F, ng/dscm New coal stoker Solid fuel subcat Solid fuel subcat Solid fuel subcat New coal fluid. bed New coal PC New biomass stoker New biomass fuel cell New biomass fluid. bed New biomass dutch oven1, New biomass susp./grate-- 1, New liquid New gas New non-cont. liquid Exist. coal stoker Solid fuel subcat Solid fuel subcat Solid fuel subcat Exist. coal fluid. Bed Exist. coal PC Exist. biomass stoker Exist. biomass fuel cell Exist. biomass fluid. bed Exist. biomass dutch oven1, Exist. biomass sus./grate-- 3, Exist. liquid Exist. gas Exist. non-cont. liquid New and existing small (<10 MMBtu/hr) units, natural gas-fired units, metal process furnaces, units combusting other clean gases, and limited use units will be subject to work practice standards.

Emission Limits for Area Source Boilers SubcategoryProposed Emission LimitsFinal Emission Limits Hg, lb/TBtuCO, ppmPM, lb/MMBtu Hg, lb/TBtuCO, ppmPM, lb/MMBtu New Coal (> 30 MMBtu/h) 0.42 ( 10 to 30 MMBtu/h) New Biomass (> 30 MMBtu/h) 0.07 ( 10 to 30 MMBtu/h) New Oil Existing Coal Existing Biomass Existing Oil New and existing small (<10 MMBtu/hr) boiler, existing and new biomass-fired boilers, and new and existing oil-fired boilers are subject to a biennial tune-up requirement.

Final Emission Limits for Existing CISWI Sources Pollutant (units) 1 CISWI Subcategories Incinerators Energy Recovery Units Energy Recovery Units - Liquid/Gas Energy Recovery Units - SolidsWaste-burning kilnsBurn-off OvensSmall, remote Incinerators ProposedFinalProposedFinalProposedFinalProposedFinal 2 ProposedFinal HCl (ppmv) CO (ppmv) (biomass units)/59 (coal units) Pb (mg/dscm) Cd (mg/dscm) Hg (mg/dscm) PM, filterable (mg/dscm) Dioxin, Furans, total (ng/dscm) ,6001,200 Dioxin, Furans, TEQ (ng/dscm) NO x (ppmv) (biomass units)/340 (coal units) 1, SO 2 (ppmv) (biomass units)/650 (coal units) Opacity (%) All emission Limits are measured at 7% oxygen. 2 Determined that burn-off ovens are not subject to this final action. 3 EPA is not promulgating opacity limits for CISWI units at this time.

Final Emission Limits for New CISWI Sources 1 All emission Limits are measured at 7% oxygen. 2 Determined that burn-off ovens are not subject to this final action. 3 EPA is not promulgating opacity limits for CISWI units at this time. Pollutant (units) 1 CISWI Subcategories Incinerators Energy Recovery Units Energy Recovery Units - Liquid/Gas Energy Recovery Units - SolidsWaste-buring KilnsBurn-off Ovens Small, remote Incinerators ProposedFinalProposedFinalProposedFinalProposedFinal 2 ProposedFinal HCl (ppmv) CO (ppmv) (biomass units)/46 (coal units) Pb (mg/dscm) Cd (mg/dscm) Hg (mg/dscm) PM, filterable (mg/dscm) Dioxin, Furans, total (ng/dscm) (no limit) ,200 Dioxin, Furans, TEQ (ng/dscm) NO x (ppmv) (biomass units)/340 (coal units) SO 2 (ppmv) (biomass units)/650 (coal units) Opacity (%)