anchor: For the Clear Skies Act, control technology installations have been looked at for the periods between now and 2005, 2005 and 2010, 2010 and 2015, and 2015 and 2020.
positive: Control technology installations have been reviewed for the years between 2005 and 2020.
negative: Control technology reviews have not been looked at for the years between 2005 and 2020.