Copper beech - URGENT ENQUIRY

I am posting this question on behalf of a friend and of course would be extremely grateful for any advice that can be offered. I will relay any questions to my friend, but this will take a wee while for the messages to go back and forth (not least as I am currently working circa 14 hours per day!), so responses back may be a wee bit slow and I would appreciate your patience on that.

My friend has a very large Copper Beech tree that is in good health. Very close to the base of the tree is a domestic heating oil tank (kerosine) and that tank developed a split that went unnoticed for a number of days. The tank has been partially emptied and an emergency repair has been made, however it is unknown at this point how much kerosine got out before the leak was spotted - and that leaked kerosine has made it into the ground underneath the tank, and therefore will be in the soil around the roots of the tree.

Is there anything that needs to be done? Will the kerosine damage the tree in any way?

 

So just hope for the best really? I confess my own thoughts were that it is a fairly 'heavy' oil so evaporation would be minimal, and the only thing that would disperse it normally would either be a detergent or some sort of alcohol based drying agent, and neither of those would do the tree any favours either.

Hopefully, it will disperse through the soil and everything will be OK then. Thanks @pete