Mr. Daniel McLoughlin:

The baseline survey indicates clearly that there is no problem at face value or at desktop level. Otherwise, you should not proceed, in terms of a desktop analysis. Once you get into the detailed design, you have to look at the fine grain. You have to get really into it. There is no avoiding it. If there was an understood timeframe within which environmental analysis was verifiable or had a shelf-life, for want of a better expression, that would be worthwhile. I am not sure if that is possible. I have never heard a consensus around it.