Ask the question and answer it yourself.... why did Dallas airport stop fracking near it and why was it so quiet...?  Know your murderers and how they operate.... whether on purpose or accidental through greed does it matter if the end is the same?  We are being systematically poisoned by air, land and sea, but especially our fresh water supplies globally.... Each fracking well produces around 2+ MILLION GALLONS of toxic byproduct they put under pressure back into the ground..... lets see if anyone knows much.... what happens to high pressure in a low pressure atmosphere....?  It expands, thats what, seeking balance in pressure.  So where does it go, EVERYWHERE,including the 1 mile up from below the surface sometimes but mainly into fresh water or groundwater structures.
As far as the Earthquakes produced by fracking, total reality and ALWAYS deemphasized by industry and cheerleaders.  Not enough space here to tell several realities I know from being originally down south in frackville