"Utilities regulators for the District of Columbia on Tuesday denied Exelon Corp’s $6.8 billion bid for Pepco Holdings Inc, dealing a major blow to a deal that would have created the country's top power distributor."

"Recently released testing results in western Pennsylvania, upstream from Pittsburgh, reveal evidence of radioactive contamination in water flowing from an abandoned mine. Experts say that the radioactive materials may have come from illegal dumping of shale fracking wastewater."

"A former chemical company executive charged over a spill that fouled the drinking water of about 300,000 West Virginians pleaded guilty to two misdemeanors on Tuesday, according to federal court documents."

"Sixteen companies have reached a $14.3 million settlement with the U.S. Environmental Protection Agency and the state of Maryland to stabilize and cap waste and contaminated soil at the Central Chemical Superfund site in Hagerstown, the agency announced Monday."

"A Baltimore City Circuit Court judge has ruled that the information railroads submit to the state about the volume and frequency of their crude oil shipments is public."

"RICHMOND, Va. — The U.S. Forest Service has raised hundreds of concerns about a proposed natural gas pipeline that would carve a 30-mile swath through national forests in Virginia and West Virginia."

"Virginia Gov. Terry McAuliffe, never stingy with superlatives or shy about boosterism, has been bragging lately in a way that has neighboring Maryland steamed."

"The federal administrators and elected leaders overseeing the restoration of the Chesapeake Bay say there are signs that the watershed is getting cleaner. But environmental advocates say the restoration process is falling dangerously behind schedule."