Duluth continues to remove ash trees from city streets

I have 20 acres near Poplar, WI. It is heavily forested primarily in ash and aspen. I am seeing ash losses rising exponentially each year. I assume within 10 years all of my ash will be gone. I am trying to encourage maple and birch growth so that the aspen does not take over completely.

I am interested in these details, of how the dead ash is disposed, the description of the infestation in Duluth, the replantings.