37. The emission of volatile organic compounds into the atmosphere from the combined paint application activities of a bus body paint shop or paint room may exceed the limit prescribed by section 27, provided that the average volatile organic compound content of the paints applied does not exceed 580 g of volatile organic compounds per litre of product applied.
For the purposes of this section, the volatile organic compound content is established according to the annual weighted average composition of the volumes of paint used for each type of paint. If a solvent, hardener or catalyst is mixed with the paint, the volatile organic compound content of the product must be included in the calculation of the average content of paint applied to determine its volatile organic compound content.