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On December 20, 2012, and again on September 14, 2016, the U.S. Environmental Protection Agency (U.S. EPA) finalized changes to the rule (40 CFR Part 63, Subpart JJJJJJ) regulating existing and new industrial, commercial, and institutional boilers located at area source facilities. An area source facility emits or has the potential to emit less than 10 tons per year (tpy) of any single air toxic or less than 25 tpy of any combination of air toxics. The final rule applies to boilers located at area source facilities that burn coal, oil, biomass, or non-waste materials, but not boilers that burn only gaseous fuels (including but not limited to natural gas, process gas, landfill gas, hydrogen, LPG) and or any solid waste as defined in 40 CFR Part 241. The vast majority of area source boilers are estimated to be located at commercial and institutional facilities and generally owned or operated by small entities.
The following list of boilers at area sources are exempt from the requirements of 40 CFR 63, JJJJJJ.
Area sources are to submit a Notice of Applicability to the U.S. EPA Region 5 by January 20, 2014 or within 120 days after start-up. Courtesy copies may be mailed to IDEM’s Office of Air Quality (OAQ), Compliance Branch.
Indiana Department of Environmental Management
Office of Air Quality Compliance Branch MC 61-53
100 North Senate Avenue IGCN 1003
Indianapolis, IN 46204-2251
New boilers are those having commenced construction or reconstruction after June 4, 2010.
Energy assessments provide owners and operators of boilers opportunities to reduce energy usage and increase efficiency of their systems. The U.S. EPA does not require owners and operators of boilers to implement recommendations made by the assessment. A one-time energy assessment was required by March 12, 2014 for area source boilers subject to this requirement. New and limited use boilers are not subject to this requirement.
|Existing Boiler Subcategory||Boiler Capacity|
|Liquid Fuel (used oil, bio diesel, fuel oil, bio fuel, vegetable oil)||≥ 10 MMBTU/hr|
|Biomass||≥ 10 MMBTU/hr|
|Coal||≥ 10 MMBTU/hr|
|Seasonal Boilers||≥ 10 MMBTU/hr|
The purpose of a boiler tune-up is to evaluate the boiler operating efficiency and make adjustments as needed.
|Existing Boilers Subcategories||Boiler Capacity||Initial Tune-up Compliance Date||Tune-up Frequency|
|Liquid Fuel (used oil, biodiesel, fuel oil, biofuel, vegetable oil)||Any Capacity||03/21/2014||Every five (5) years for boilers with an oxygen trim system, otherwise every two (2) years|
|Bio Mass (solid fuel that is not solid waste, i.e., wood residue, wood products)||Any Capacity||03/21/2014||Every five (5) years for boilers with an oxygen trim system, otherwise every two (2) years|
|Coal||Any Capacity||03/21/2014||Every five (5) years for boilers with an oxygen trim system, otherwise every two (2) years|
|Seasonal and Limited-Use Boilers||Any Capacity||03/21/2014||Every five (5) years|
New boilers must conduct a tune-up within 25 or 61 months of start-up depending on their fuel source subcategory.
Area source boilers are also subject to performance testing and one-time energy assessments depending on the age, capacity, and fuel-type category. If you are unsure whether you are subject to these requirements, select from either “New” or “Existing” from the fuel categories listed below for details on your specific requirements. Please note area source boilers included within the process gas fuel-type category are not subject to this rule.
If so, you must provide notice of the date upon which you switched fuels or made the physical change.
Notification must identify:
Process gas boilers that have liquid fuel for back-up will still fall under the Process Gas category if the usage of liquid fuel is limited to 48 hours or less per year and the liquid fuel is utilized during a period of gas curtailment or supply interruption.