By MICHAEL BIESECKER
The operator of a natural gas storage well in Western Pennsylvania says workers have successfully plugged a leak that had been spewing massive amounts of planet-warming methane into the atmosphere for two weeks. Equitrans Midstream says the well at its Rager Mountain storage facility, located in a rural area about 1.5 hours east of Pittsburgh, was sealed shut with concrete on Sunday. Initial estimates indicate the well had been venting about 100 million cubic feet of natural gas per day since Nov. 6. Pennsylvania environmental regulators have issued the company notice of five potential violations of state law.