The Pittsburgh Citizen

Feb. 22: This post has been corrected (see below). Since Pennsylvania’s gas drilling boom ramped up in 2008, companies have been fined regularly for environmental accidents — $23,500 here for spilling 5,000 gallons of waste, $15,557 there for spilling 295 gallons of hydrochloric acid.

Nov. 3: This post has been updated. Workers at a steel mill and a power plant were the first to notice something strange about the Monongahela River last summer. The water that U.S. Steel and Allegheny Energy used to power their plants contained so much salty sediment that it was corroding their machinery. Nearby residents saw something odd, too.

Pennsylvania environment officials have charged Cabot Oil and Gas with five violations after nearly 8,000 gallons of hydraulic fracturing solution spilled from a pipe system in two separate incidents near the town of Dimock last week. The department reported that a third, smaller spill occurred at the site Tuesday morning.

Sept. 22: This post has been corrected.

Pennsylvania environment officials are racing to clean up as much as 8,000 gallons of dangerous drilling fluids after a series of spills at a natural gas production site near the town of Dimock last week.