Can't view if you have an adblocker, but the concern is overblown. Ammonia is widely used as an industrial refrigerant, so leaks and their implications are an old story. (I've been through one. Not nice, but you walk away from it.) Ammonia is lighter than air and will rise above the ground in concentrated form. It is also highly hygroscopic and will be absorbed by any precipitation ("alkaline rain") to produce the usual household ammonia. Further dilution will dilute (duh). it is also a normal byproduct of decomposition, so it is a natural occurrence. In some places, it is pumped into the ground directly as fertilizer.
Not to say that you can be careless. A whiff from the household ammonia bottle will wake you up to that in a jiffy. And you would want to keep your distance from any pipeline breach (your nose will let you know). It will not hug the ground.
Can't view if you have an adblocker, but the concern is overblown. Ammonia is widely used as an industrial refrigerant, so leaks and their implications are an old story. (I've been through one. Not nice, but you walk away from it.) Ammonia is lighter than air and will rise above the ground in concentrated form. It is also highly hygroscopic and will be absorbed by any precipitation ("alkaline rain") to produce the usual household ammonia. Further dilution will dilute (duh). it is also a normal byproduct of decomposition, so it is a natural occurrence. In some places, it is pumped into the ground directly as fertilizer.
Not to say that you can be careless. A whiff from the household ammonia bottle will wake you up to that in a jiffy. And you would want to keep your distance from any pipeline breach (your nose will let you know). It will not hug the ground.