For those of you with experience with geo thermal systems;
Have any of you read or heard the about new envronmental issues that are apparently starting to be looked at regarding how the thermal change to the soil is potentially causing a chemical change to the GEO well surrounding soil and leading to possible leaching / pollution issues?
From what I have heard, there may be some future design changes comming relating to ground water containmation exposure.
From what I understand, it isn't about the GEO loop coolant contaminating the well's soil, it is about how the change in soil chemistry is allowing the potential leaching of undesirable chemicals, already in the soil, to become free to permeate down into, and contanminate sub surface water aquifers.
I would have not even tought about how heating up the soil could have had this potential effect, guess thats why I am not a dirt technician.
Any feed back would be greatly appreciated.