On The Environment Report yesterday, we heard from Michigan Department of Environmental Quality Communications Director Brad Wurfel about his agency's views on the safety of hydraulic fracturing.
In the interview, he said drillers have been using hydraulic fracturing since the 1960's to drill vertical wells.
We pointed out there are important differences between traditional vertical drilling and a newer method called horizontal hydraulic fracturing. The new method allows drillers to get natural gas that's much deeper underground.
One of the things to note:
With the more traditional, vertical hydraulic fracturing we’re talking about tens of thousands of gallons of water – horizontal hydraulic fracturing uses millions of gallons.
This is water that’s contaminated and cannot be used again.
In the interview, Brad Wurfel said:
"In 50 years and 12,000 wells around the state, we’ve never had to respond to an environmental emergency with hydraulic fracturing."
I followed up with him on this point today, to ask about this leak that my colleague Lester Graham reported on in February 2011:
The Associated Press reports a leak has shut down a drilling operation not too far from Traverse City.
It's not yet clear whether it will damage underground water sources. It does raise questions as to whether Michigan regulations are adequate to protect the environment while exploiting the gas reserves in the state.
Here is Wurfel's response: