Maybe I can speak to contaminated sites and the historical nature. The commissioner did speak to the fact that this program is intended to look at those historical sites that have been contaminated. Many of the regulations and policies we've been putting in place over the last 20 to 30 years have been helping to reduce the number of new contaminated sites that are coming on board.
Unfortunately, in terms of the emissions, I don't want to misspeak; it isn't my area of expertise.