Hey Sean,
Impatient developers give you the shytes, With the hydro excavation what psi does the blaster run while trenching the root ball?? I've noticed down here they are starting to protect the exzisting trees during work, Not as big exculsion zone that you really want but better than nothing, I've also seen thin wooden slats wired to the tree to protect it from impact from what ever, It's a step in the right direction.
