Infrastructure Bill [HL]

Perhaps I may give just a couple of examples. Water pollution and the impact on aquifers in general could be quite a substantial issue. We already know that the volume of wastewater coming from shale gas extraction sites is substantial. For the most part that will be brought back to base, but where aquifers are involved we are not absolutely clear about that. There are a number of issues which are not just the site-based issues on the surface. They are about what is happening in terms of underground processes as well.