Existing Area Source(a) Requirements

(a) Existing Area Source - commenced construction or reconstruction on or before June 4, 2010.

 

(b) Existing Large Unit - heat input capacity of 10 MMBtu/hr.

 

(c) Existing Small Unit - heat input capacity less than 10 MMBtu/hr.

 

(d) Boilers that are required to have a tune-up every two (2) years include: (1) Existing small coal-fired boilers that do not meet the definition of limited-use boiler or do not use an oxygen trim system that maintains an optimum air-to-fuel ratio; (2) Existing biomass-fired boilers that do not meet the definition of seasonal boiler or limited-use boiler, or use an oxygen trim system that maintains an optimum air-to-fuel ratio; and (3) Existing oil-fired boilers greater than 5MMBtu/hr that do not meet the definition of seasonal boiler or limited-use boiler, or do not use an oxygen trim system that maintains an optimum air-to-fuel ratio. Boilers that are required to have a tune-up every five (5) years include: (1) Existing seasonal boilers; (2) Existing limited- use boilers; (3) Existing oil-fired boilers less than 5 MMBtu/hr; and (4) Existing boilers with an oxygen trim system that maintains an optimum air-to-fuel ratio that would otherwise be subject to a biennial tune-up.

 

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New Area Source(a) Requirements

(a) New Area Source - commenced construction or reconstruction on or before June 4, 2010.

 

(b) New Large Unit - heat input capacity of 10 MMBtu/hr.

 

(c) New Small Unit - heat input capacity less than 10 MMBtu/hr.

 

(d) Boilers that are required to have a tune-up every two (2) years include: (1) Existing small coal-fired boilers that do not meet the definition of limited-use boiler or do not use an oxygen trim system that maintains an optimum air-to-fuel ratio; (2) Existing biomass-fired boilers that do not meet the definition of seasonal boiler or limited-use boiler, or use an oxygen trim system that maintains an optimum air-to-fuel ratio; and (3) Existing oil-fired boilers greater than 5MMBtu/hr that do not meet the definition of seasonal boiler or limited-use boiler, or do not use an oxygen trim system that maintains an optimum air-to-fuel ratio. Boilers that are required to have a tune-up every five (5) years include: (1) Existing seasonal boilers; (2) Existing limited- use boilers; (3) Existing oil-fired boilers less than 5 MMBtu/hr; and (4) Existing boilers with an oxygen trim system that maintains an optimum air-to-fuel ratio that would otherwise be subject to a biennial tune-up.

 

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Existing Major Source(a) Requirements

(a) Existing Major Source - commenced construction or reconstruction on or before June 4, 2010.

 

(b) New Large Unit - heat input capacity of 10 MMBtu/hr.

 

(c) New Small Unit - heat input capacity less than 10 MMBtu/hr.

 

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New Major Source(a) Requirements

(a) New Major Source - commenced construction or reconstruction on or before June 4, 2010.

 

(b) New Large Unit - heat input capacity of 10 MMBtu/hr or greater.

 

(c) New Small Unit - heat input capacity less than 10 MMBtu/hr.

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Stay Connected For the Life of Your Boiler

 

 

- Frequently Asked
   Boiler MACT
   Questions

 

- What Are the Rules?

- Where Do I Start?

- Step 1 - Determine

   Applicable Rule

- Step 2 - Define Fuels

   Combusted

- Step 3 - Determine

   Compliance   
   Requirements

 

- Key Milestone Dates

- Tune-Up Requirements

- Energy Assessments

- Performance Tests

- Options

- On-Going Requirements

- Repeat Tune-Ups

- Reporting

 

- Existing Area Source

- New Area Source

- Existing Major Source

- New Major Source

 

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