An agency brings an enforcement action against a polluting landowner who is diverting water from his sewer into a local lake rather than the city sewer. After the agency brings the suit to court, the landowner voluntarily renovates his system and pays all relevant fines.

An agency brings an enforcement action against a polluting company that is dumping nuclear waste into a local reservoir. After receiving notice of the administrative action, the company continues the dumping. When the agency finally files in court to enjoin the dumping, the company shuts off all of its pipes to the reservoir, effectively ceasing all illegal dumping.

The plaintiff challenges a law that prohibits certain conduct. However, the time period in which that conduct can occur lasts approximately 9 months, while the time in which federal court can be completed last years. At the time the case is heard, the plaintiff no longer meets the condition.

Should these cases be ruled moot? Perform analysis and explain your reasoning.