For example:

• A large fraction of our clients have operations in severe non-attainment areas. RACT requirements for these facilities mean that most plants have been required to meet lower emissions limits than would be the case in lesser non-attainment or attainment areas. Most of our printer and coater clients have had regenerative thermal oxidizers (RTOs) since the mid-1990s or even earlier.
  
• Since the eastern seaboard is in the ozone transport region (OTR) this area has been non-attainment for ozone since 1990. As a result large combustion sources have had to achieve NOX RACT reductions. As the RACT requirements have been made more stringent over the years these facilities have had to install low-NOX burners, selective catalytic reduction, and other strategies to reduce NOX emissions. ARG has participated with many facilities in evaluating and selecting the right technology application.
  
• VOC sources are major contributors to the ozone non-attainment problem and have also been subject to emission restrictions. Control technologies common to the OTR include RTOs, activated carbon and HEPA filters, use of exempt solvents and coatings, and a host of alternative control strategies and technologies. ARG staff have been active with many facilities in the evaluation and selection of technology options.
  
• New sources and expansions to existing sources must meet even more stringent limits known as lowest achievable emission rate (LAER) and best available control technology (BACT). These technologies are more technically challenging and require a comprehensive top-down analysis using a rigorous EPA specified methodology. ARG has performed many analyses for BACT and LAER control selections.