The need to streamline the regulations was recognized shortly after the regulations were issued. Prior to the streamlined change, lithographic printers were required to meet two different RACT rules that were put in place in 1995 and in 2009. Some lithographic printing facilities have been subject to both rules and complying with one rule did not mean a facility was in compliance with the other one, which created both enforcement and air permitting conflicts.
The streamlined regulations make it much easier for printing operations to comply as there is now only one set of requirements that need to be met. The DNR has created a fact sheet that explains the revised requirements and it can be found at https://docs.legis.wisconsin.gov/code/admin_code/nr/400/422.pdf