Marcellus Air Impact Uncertain

Pittsburgh Tribune-Review
20 October 2010
By Tim Puko

Allegheny County health officials said Tuesday they have not decided whether air quality monitoring is needed to oversee Marcellus shale gas wells because of possible air pollution from the drilling process.

They have inspected the only three Marcellus wells drilled in the county and found the amount of air pollution produced is so low that they do not need permits under county regulations, manager Jim Thompson said.

The county's Air Pollution Control Advisory Committee met yesterday in part to hear from opponents of gas drilling about the impact of the natural gas industry on air quality. Previously, most concern about pollution from drilling for natural gas has been about its use of water.

The Group Against Smog and Pollution in Squirrel Hill asked the committee to recommend that the county's Air Quality Program step in because of air pollution they claim gas wells can cause.

Natural gas extraction emits ozone into the air, which is a special problem for Pittsburgh because it has one of the worst ozone problems in the country, said Joe Osborne, legal director of GASP.

Thompson agreed and noted that federal ozone standards are about to be strengthened. Because of Marcellus gas drilling development in surrounding counties, Allegheny County will have air problems from Marcellus regardless of health officials' actions.

There were 1,721 permits issued for wells in the state's Marcellus reserves from January through July and 822 were drilled, compared with 999 permits issued and 263 horizontal wells drilled in the same period a year ago, state figures show. There was more activity in Washington and Greene counties -- 273 permits issued and 148 wells drilled -- than in eight other Southwest Pennsylvania counties combined, according to a state report.

There is no consensus about the total pollution caused by the natural gas industry.

Several shale-drilling regions have reported air pollution spikes, but the industry is addressing that by updating its equipment, said Matt Pitzarella, spokesman at Range Resources Inc. in Cecil, Washington County.

"We know that's something (state regulators) are looking at, so our role in this is going to be to continue to work with them," Pitzarella said, adding that more permitting from a separate regulatory agency is probably unnecessary.

The region consistently ranks among the nation's worst for air quality, which regulators should consider, said George Leikauf, professor of environmental health at the University of Pittsburgh. The state should not have started permitting wells without a strategy to limit emissions, including work limits during the summer when air quality is at its worst, he said.

"It's an engineering problem. It's not insurmountable. But the way the industry likes to do it now, it's cheap. It's always cheaper to pollute," Leikauf said. "We can't absorb anything more."

Tim Puko can be reached at tpuko@tribweb.com or 412-320-7991.