I wonder if this can be remediated by covering the chickens run in a deep layer of mulch and shredded leaves, letting that compost over time as the chickens poo

I wonder if this can be remediated by covering the chickens run in a deep layer of mulch and shredded leaves, letting that compost over time as the chickens poop and scratch in it. Over time the layer of contaminated soil could be buried deeper under fresh compost. I also wonder if you could innoculate the wood chips with a fungus whose mycelium could filter out the soil a bit.