I have almost a 3/4 acre of fill on my land from a prior owner. By fill I mean not able to even pound in a stake, hitting big rocks. As I cannot afford to remove this fill or cover it with top soil, I've started the process to make some soil. I've put 5 chip drops on this fill. It is spread over the ground with nothing added. The chips are largely pine, oak and soft woods like alder.
So as time passes and fungi start to grow, what can I do to help with my next step (2-3 years).
Location: Oregon valley.