It could be done. In my opinion, it would not be required, given that there has never been a proven instance in all the situations.... I believe the effort should be put into proper well-bore construction practices and baseline monitoring, and those will provide the public assurance.
To comment on Ms. Ernst, you're right, she has been raising concerns about contamination in the coal-bed methane realm for a number of years. She sued us and the Energy Resources Conservation Board, the regulator in Alberta. The Department of Environment in Alberta has come out definitively saying that there has been no groundwater contamination as a result of our operations in the Rosebud area.