Related to actively enforcing

law enforcement means the prevention, detection or investigation of terrorist offences or other serious criminal offences;
Law enforcement unit means an individual office, department, division, or other component of an education agency or institution that is officially authorized or designated by that agency or institution to (1) enforce laws or refer matters of law enforcement to appropriate authorities, or (2) maintain the physical security and safety of the agency or institution.
Support enforcement agency means a public official or agency authorized to seek:
Existing source or existing discharger (in the NPDES program) means any source which is not a new source or new discharger.
Federally enforceable means all limitations and conditions which are enforceable by the administrator, including those requirements developed pursuant to 40 CFR Parts 60 and 61, requirements within the Montana state implementation plan, and any permit requirement established pursuant to 40 CFR 52.21 or under regulations approved pursuant to 40 CFR 51, Subpart I, including operating permits issued under an EPA approved program that is incorporated into the Montana state implementation plan and expressly requires adherence to any permit issued under such program.

actively enforcing definition