On January 29, 2017, EQT used underground horizontal directional drilling (HDD) to drill a hole under State Route 136 in Allegheny County, PA, to install a water pipeline. As they were drilling, using what we now know was an out-of-date map, EQT hit an abandoned coal mine full of water, and four million gallons of acid mine drainage (AMD) leaked into the Monongahela River. EQT worked hard and fast to stop the leak (stopping it two days later) and set up a system to prevent any further leaks. Now, nearly two years later, it’s time to pay the piper. EQT just agreed to a fine of $294,000 for violating the Clean Streams Law, and payment of an additional $100,000 to the Clean Streams Foundation to provide for maintenance, operation, and replacement of a system to keep AMD from leaking at the site in the future.