Crews dug up and removed contaminated soil after about 100 gallons of diesel fuel spilled at a natural gas drilling site in northeastern Pennsylvania.

The spill happened last Friday at a Cabot Oil & Gas Corp. site near Dimock in Susquehanna County. That's where the Houston-based company is drilling a number of gas wells into the Marcellus Shale rock formation.

Pennsylvania Department of Environmental Protection spokesman Mark Carmon says the spill did not contaminate ground water or streams.

He said the department ordered Cabot to hire a consultant to ensure that it removed all the contaminated soil.

Last spring, crews at another nearby Cabot well site had to clean up about 800 gallons of diesel that spilled.

Officials are also investigating how natural gas seeped into four nearby private water wells.

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