If a person refuses to pay a civil penalty after an enforcement order is final, what action can CAC take?

The action that can be taken by the CAC when a person refuses to pay a civil penalty after an enforcement order becomes final is directly tied to their regulatory authority over permits. Denying a person's request for a permit serves as a way to enforce compliance, as obtaining a permit is often necessary for conducting various activities that may impact the environment. The refusal to issue a permit puts pressure on the individual to resolve the outstanding penalty, thereby encouraging adherence to environmental regulations.

While sending the bill to a collections agency may seem like a viable option for recovering unpaid penalties, it does not directly convey the regulatory enforcement authority or the potential consequences of non-compliance. The other two choices regarding photographs and the relevance of subjects are unrelated to the context of enforcing penalties and are not relevant to actions that can be taken by the CAC in this scenario.