Title 7 Natural Resources and Environmental Control
1124 Control of Volatile Organic Compound Emissions
15.0 Coil Coating
01/11/1993
15.1 Applicability
15.1.1 The provisions of 15.0 of this regulation apply to any coil coating unit.
15.1.2 The provisions of 15.0 of this regulation do not apply to any coil coating unit within a facility whose actual emissions without control devices from all coil coating units within the facility are less than 6.8 kilograms (kg) (15 pounds [lb]) of volatile organic compounds (VOCs) per day.
15.1.3 An owner or operator of a facility whose emissions are below the applicability threshold in 15.1.2 of regulation shall comply with the certification, recordkeeping, and reporting requirements of 15.7 of this regulation.
15.1.4 Any facility that becomes or is currently subject to the provisions of 15.0 of this regulation by exceeding the applicability threshold in 15.1.2 of this regulation will remain subject to these provisions even if its emissions later fall below the applicability threshold.
15.1.5 Any facility that is currently subject to a state or federal rule promulgated pursuant to the Clean Air Act Amendments of 1977 by exceeding an applicability threshold is and will remain subject to these provisions, even if its throughput or emissions have fallen or later fall below the applicability threshold.
15.2 Definitions. As used in 15.0 of this regulation, all terms not defined herein shall have the meaning given them in the November 15, 1990 Clean Air Act Amendments (CAAA), or in 2.0 of this regulation.
“Coil” means any continuous metal strip with thickness of 0.15 millimeter (mm) (0.006 inch [in.]) or more that is packaged in a roll or coil.
“Coil coating line” means a web coating line where coating is applied to coil.
“Coil coating unit” means a coating application station and its associated flashoff area, drying area, or drying oven wherein coating is applied and dried or cured on a coil coating line. A coil coating line may include more than one coil coating unit.
15.3 Standards
15.3.1 No owner or operator of a coil coating unit subject to 15.0 of this regulation shall cause or allow the application of any coating on that unit with VOC content in excess of 0.31 kilograms per liter (kg/L) (2.6 pounds per gallon [lb/gal]) of coating, excluding water and exempt compounds, as applied.
15.3.2 As an alternative to compliance with the emission limit in 15.3.1 of this regulation, an owner or operator of a coil coating unit may meet the requirements of 15.4 or 15.5 of this regulation.
15.4 Daily-weighted average limitation. No owner or operator of a coil coating unit subject to 15.0 of this regulation shall apply, during any day, coatings on that unit whose daily-weighted average VOC content, calculated in accordance with the procedure specified in Appendix C of this regulation, exceeds the emission limit in 15.3.1 of this regulation.
15.5 Control devices
15.5.1 An owner or operator of a coil coating unit subject to 15.0 of this regulation may comply with 15.0 of this regulation by:
15.5.1.1 Installing and operating a capture system on that unit.
15.5.1.2 Installing and operating a control device on that unit.
15.5.1.3 Determining for each day the overall emission reduction efficiency needed to demonstrate compliance. The overall emission reduction needed for a day is the lesser of the value calculated according to the procedure in 3.0 of Appendix C of this regulation for that day or 95%.
15.5.1.4 Demonstrating each day that the overall emission reduction efficiency achieved for that day, as determined in 3.0 of Appendix D of this regulation, is greater than or equal to the overall emission reduction efficiency required for that day.
15.5.2 An owner or operator of a coil coating unit subject to 15.0 of this regulation shall ensure that:
15.5.2.1 A capture system and control device are operated at all times the coating unit is in operation, and the owner or operator demonstrates compliance with 15.0 of this regulation through the applicable coating analysis and capture system and control device efficiency test methods specified in Appendix B, Appendix D and Appendix E of this regulation and in accordance with the capture efficiency test methods in Appendix D of this regulation.
15.5.2.2 The control device is equipped with the applicable monitoring equipment specified in 2.0 of Appendix D of this regulation, and the monitoring equipment is installed, calibrated, operated, and maintained according to the vendor's specifications at all times the control device is in use.
15.6 Test methods. The test methods found in Appendix A through Appendix D of this regulation shall be used to determine compliance with 15.0 of this regulation.
15.7 Recordkeeping and reporting
15.7.1 An owner or operator of a coil coating unit that is exempt from the emission limitations in 15.3 of this regulation shall comply with the certification, recordkeeping, and reporting requirements in 4.2 of this regulation.
15.7.2 An owner or operator of a coil coating unit subject to 15.0 of this regulation and complying with 15.3 of this regulation by the use of complying coatings shall comply with the certification, recordkeeping, and reporting requirements in 4.3 of this regulation.
15.7.3 An owner or operator of a coil coating unit subject to 15.0 of this regulation and complying with 15.4 of this regulation by daily-weighted averaging shall comply with the certification, recordkeeping, and reporting requirements in 4.4 of this regulation.
15.7.4 An owner or operator of a coil coating unit subject to 15.0 of this regulation and complying with 15.5 of this regulation by the use of control devices shall comply with the testing, reporting, and recordkeeping requirements in 4.5 of this regulation.
