Under the bill, the fee would fluctuate depending on the price of natural gas and, starting in 2013, on the rate of inflation. If the price of natural gas is between $3 and $5, the fee would be $310,000 per well over 15 years. That fee would be lower if the price of gas falls below $3, and would increase if the price of gas rises above $5. The price now is less than $2.50, according to the U.S. Department of Energy.
The maximum fee a company would pay is $355,000 per well, if gas stays above $6 - and that does not account for inflation. The minimum would be $240,000, not counting inflation.
One of the major sticking points as the legislature has tried to hammer out an agreement on this issue has been how - and by whom - money raised by the fee would be distributed.
The agreement would allow counties where drilling occurs to decide whether to impose a fee. If a county declines to impose a fee, half its municipalities would have the option to force it to do so.
The Pennsylvania Public Utility Commission would collect and distribute the fee, according to the summary of the agreement. Sixty percent of the money would go to areas directly affected by drilling for things such as infrastructure and public-safety costs. The other 40 percent would go to statewide projects, many of them environmental, including repairs to greenways and recreational trails, protection of open space, and other beautification projects.
Many Democrats have complained that imposing a fee is equivalent to letting big drillers off the hook. Instead, they have advocated a tax - even though Corbett has been steadfast in his opposition to a drilling tax.
And there are some Republicans who say they believe the industry already pays its fair share of taxes and have opposed adding any new levies.
Contact staff writer Angela Couloumbis at 717-787-5934, acouloumbis@phillynews.com, or @AngelasInk on Twitter.
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