326 IAC 2-9-13 External combustion sources

Sec. 13. (a) The following definitions apply throughout this section: (1) "Boiler" means a device that uses the heat generated from combustion of a fuel or electrical resistance to raise the temperature of water above the boiling point for water at the operating pressure. (2) "Dryer" means a device that uses the heat generated from combustion of a fuel or electrical resistance to drive off volatile compounds by evaporation from materials processed in such a device. (3) "Oven" means a device that uses the heat generated from combustion of a fuel or electrical resistance to cause or expedite a chemical curing process or drive off volatile compounds from material processed in such a device. (4) "Process heater" means a device that uses the heat generated from combustion of a fuel or electrical resistance to heat a material so as to augment or expedite its processing. (5) "Space heater" means a device that uses the heat generated from combustion of a fuel or electrical resistance to heat the air inside a building or otherwise provide comfort heating. (6) "Water heater" means a device that uses the heat generated from combustion of a fuel or electrical resistance to raise the temperature of water below the boiling point for water at the operating pressure. (b) Any external combustion source, including any combination of boilers, space heaters, ovens, dryers, or water heaters may elect to comply with this section by complying with the requirements of section 1 of this rule and the following: (1) Visible emissions from the source shall not exceed twenty percent (20%) opacity in twenty-four (24) consecutive readings in a six (6) minute period. The opacity shall be determined using 40 CFR 60, Appendix A, Method 9*. (2) Limiting fuel usage for every twelve (12) month period to less than the limits found in: (A) subsection (f), Table 1 for a single fuel or a combination of two (2) fuels; or (B) subsection (g), Table 2 for a single fuel or a combination of two (2) fuels. (c) Sources electing to comply with subsection (b)(2)(A) must be able to demonstrate compliance not later than thirty (30) days after receipt of a written request by the department or U.S. EPA. No other demonstration of compliance shall be required. A source specific operating agreement is not required for these sources. (d) Sources electing to comply with subsection (b)(2)(B) must: (1) comply with the requirements of section 1 of this rule; and (2) submit a request for a source specific operating agreement. (e) For sources complying with subsection (b)(2)(B), the following records shall be kept at the source: (1) Monthly hours operated for each combustion unit. (2) Records of annual fuel usage for each combustion unit. (3) Routine maintenance records. (f) Table 1 limits shall be as follows: TABLE 1 Fuel Maximum Fuel Usage per Year Single Fuel Natural gas 1,000.0 MMCF Maximum capacity: 0.3 to <10 MMBtu/hr Natural gas 714.0 MMCF Maximum capacity: 10 to 100 MMBtu/hr Natural gas 181.0 MMCF Maximum capacity: >100 MMBtu/hr Fuel oil #1 and #2 (distillate) 1,408.0 kgals Fuel oil #5 and #6 (distillate) 181.0 kgals Liquefied petroleum gas (LPG) 5,263.0 MMCF Coal (bituminous and subbituminous) 786.0 tons Bark-only 5,882.0 tons Wood-only 7,352.0 tons Wood and bark 7,352.0 tons Dual Fuel1 Natural gas 976.0 MMCF Fuel oil #1 and #2 (distillate) 117.0 kgals Maximum capacity: 0.3 to <10 MMBtu/hr Natural gas 697.0 MMCF Fuel oil #1 and #2 (distillate) 117.0 kgals Maximum capacity: 10 to 100 MMBtu/hr Natural gas 177.0 MMCF Fuel oil #1 and #2 (distillate) 117.0 kgals Maximum capacity: >100 MMBtu/hr Fuel oil #1 and #2 (distillate) 1,407.0 kgals Natural gas 83.0 MMCF Maximum capacity: 0.3 to <10 MMBtu/hr Fuel oil #1 and #2 (distillate) 1,407.0 kgals Natural gas 59.0 MMCF Maximum capacity: 10 to 100 MMBtu/hr Fuel oil #1 and #2 (distillate) 1,407.0 kgals Natural gas 15.0 MMCF Maximum capacity: >100 MMBtu/hr Fuel oil #1 and #2 (distillate) 1,291.0 kgals Fuel oil #5 and #6 (residual) 15.0 kgals Coal (bituminous and subbituminous) 786.0 tons Bark, wood, or wood and bark 490.0 tons Bark, wood, or wood and bark 5,858.0 tons Coal (bituminous and subbituminous) 65.0 tons (1Top fuel is intended to be the primary fuel, the bottom fuel is the secondary fuel.) Unit abbreviations: kgals = 103 gallons MMCF = 106 cubic feet (g) Table 2 limits shall be as follows: TABLE 2 Fuel Maximum Fuel Usage per Year Single Fuel Natural gas 1,600.0 MMCF Maximum capacity: 0.3 to <10 MMBtu/hr Natural gas 1,142.0 MMCF Maximum capacity: 10 to 100 MMBtu/hr Natural gas 290.0 MMCF Maximum capacity: >100 MMBtu/hr Fuel oil #1 and #2 (distillate) 2,253.0 kgals Fuel oil #5 and #6 (residual) 291.0 kgals Liquefied petroleum gas (LPG) 8,421.0 MMCF Coal (bituminous and subbituminous) 1,258.0 tons Bark-only 9,411.0 tons Wood-only 11,764.0 tons Wood/bark 11,764.0 tons Dual Fuel1 Natural gas 1,562.0 MMCF Fuel oil #1 and #2 (distillate) 187.0 kgals Maximum capacity: 0.3 to <10 MMBtu/hr Natural gas 1,115.0 MMCF Fuel oil #1 and #2 (distillate) 187.0 kgals Maximum capacity: 10 to 100 MMBtu/hr Natural gas 284.0 MMCF Fuel oil #1 and #2 (distillate) 187.0 kgals Maximum capacity: >100 MMBtu/hr Fuel oil #1 and #2 (distillate fuel) 2,252.0 kgals Natural gas 133.0 MMCF Maximum capacity: 0.3 to <10 MMBtu/hr Fuel oil #1 and #2 (distillate fuel) 2,252.0 kgals Natural gas 95.0 MMCF Maximum capacity: 10 to 100 MMBtu/hr Fuel oil #1 and #2 (distillate fuel) 2,252.0 kgals Natural gas 24.0 MMCF Maximum capacity: >100 MMBtu/hr Fuel oil #1 and #2 (distillate fuel) 2,065.0 kgals Fuel oil #5 and #6 (residual) 24.0 kgals Coal (bituminous and subbituminous) 1,258.0 tons Bark, wood, or wood and bark 784.0 tons Bark, wood, or wood and bark 9,373.0 tons Coal (bituminous and subbituminous) 104.0 tons (1Top fuel is intended to be the primary fuel; the bottom fuel is the secondary fuel.) Unit abbreviations: kgals = 103 gallons MMCF = 106 cubic feet *This document is incorporated by reference. Copies may be obtained from the Government Printing Office, 732 North Capitol Street NW, Washington, D.C. 20401 or are available for review and copying at the Indiana Department of Environmental Management, Office of Air Quality, Indiana Government Center North, Tenth Floor, 100 North Senate Avenue, Indianapolis, Indiana 46204.