5 Colo. Code Regs. § 1001-29-E
The following procedure shall be used to convert emission limits expressed as lb VOC/gallon coating less water and exempt solvents to limits expressed as lb VOC/gallon solids. This example uses the emission limit of 3.7 lb VOC/gallon coating.
Assume VOC density of the `Presumptive' RACT coating is 7.36 pounds per gallon because this same value was used to determine the "Presumptive" recommended RACT emission limits from volume solids data.
(3.7) LB VOC / GAL COATING LESS WATER x l GAL VOC x 100 / 7.36 LB VOC = (50) V0L% VOC 100- (50) V0L% VOC = (50) V0L% SOLIDS (3.7) LB VOC / GAL COATING LESS H2O x 100 GAL COATING / (50) GAL SOLIDS = (7.4) LB VOC / GAL SOLIDS |
See "A Guideline for Surface Coating Calculations" EPA- 340/ 1-86-0l 6 for additional examples.
The following table lists equivalent mass VOC/volume solids emission limits for various coating operations.
Equivalency Data for Surface Coating Processes (VOC Density = 7.36 lb/gal) | |||
Industrial Finishing Categories | Lb VOC per Gallon Coating less water | Lb VOC per Gallon of Solids | Kg VOC per Liter of Solids |
Can Industry | |||
Sheet Basecoat (Exterior and Interior) and over-varnish; two-piece can exterior (base-coat and over-varnish) | 2.8 | 4.5 | 0.55 |
Two- and three-piece can interior body spray, two-piece can exterior end spray or roll coat | 4.2 | 9.8 | 1.19 |
Three-piece can side-seam spray | 5.5 | 21.7 | 2.61 |
End sealing compound | 3.7 | 7.4 | 0.88 |
Any additional coats | 4.2 | 9.8 | 1.19 |
Coil Coating | |||
Any coat | 2.6 | 4.0 | 0.48 |
Fabric Coating | |||
Fabric coating line | 2.9 | 4.8 | 0.58 |
Vinyl coating line | 3.8 | 7.9 | 0.93 |
Paper Coating | |||
Coating line | 2.9 | 4.8 | 0.58 |
Automotive and Light-Duty Truck Assembly Plant | |||
Primer (electrodeposition) application, flashoff area and oven | 1.9 | 2.6 | 0.31 |
Topcoat application, flashoff area and oven | 2.8 | 4.5 | 0.55 |
Final repair application, flashoff area and oven | 4.8 | 13.8 | 1.67 |
Metal Furniture | |||
Coating line | 3.0 | 5.1 | 0.61 |
Magnet Wire | |||
Wire coating operation | 1.7 | 2.2 | 0.26 |
Large Appliances | |||
Prime, single, or topcoat application area, flashoff area and oven | 2.8 | 4.5 | 0.55 |
Miscellaneous Metal Parts and Products | |||
Air-dried items | 3.5 | 6.7 | 0.80 |
Clear-coated items | 4.3 | 10.3 | 1.25 |
Extreme performance coatings | 3.5 | 6.7 | 0.80 |
Other coatings and systems | 3.0 | 5.1 | 0.61 |
Plastic Film Coating | |||
Plastic film coating line | 2.9 | 4.8 | 0.58 |
5 CCR 1001-29-E