40 C.F.R. § 19.2
The penalty levels in the last column of Table 1 to § 19.4 apply to all violations which occurred after December 6, 2013 through November 2, 2015, and to violations occurring after November 2, 2015, where penalties are assessed before August 1, 2016. The statutory civil penalty levels set forth in the fourth column of Table 2 to § 19.4 apply to all violations which occur after November 2, 2015, where the penalties are assessed on or after August 1, 2016 and before January 15, 2017. The statutory civil penalty levels set forth in the last column of Table 2 to § 19.4 apply to all violations which occur after November 2, 2015, where the penalties are assessed on or after January 15, 2017.
[82 FR 3635, Jan. 12, 2017]