Right, thinking of assembling the equipment…
I am thinking that an atmospheric monitoring station might have some kind of mast for taking some of the measures. It would also have a small suite of sensors that would have to be secured and then configured. Power systems would have to be activated too. Finally, some kind of data link would have to be created, perhaps on a period transmission that fires of every so often. A small satellite in orbit around the plant could relay the information back to the command post. There are some details here that we can play on.