Ms Claire Quane:

I can talk about SF6 gas. We have a list of the equipment with which we use it.

We report on it because we report annually to the EPA how much usage we have. In addition, it is important to understand that we manage SF6. We do that through a suite of procedures and those were rolled out in 2015 and 2016. We also have to manage the usage and we do that through containers. We have an inventory of those containers as well.