We have a huge Monterey pine at the end of the garden with its roots in an old well- which we have just started using as water for the house. The roots are huge and the tree will be pulling quite a bit of water from the well. We legally can not hurt the tree in anyway and I don't want to weaken it in case it falls and takes out next door . Question is- can we remove the roots that are in the well without hurting the tree- (could be done over a long time period if that would help. )