Tom Wahl spoke on site selection and care of chestnut trees at the Chestnut conference in Letts, Iowa on February 11, 2017. The conference was video taped. This video is 1 hour and 20 minute long. It covers hardiness zones, drainage needs, Ph requirements and more for chestnut trees. Information from the conference is available.
You can watch the vidoe and others from the chestnut conferce on you tube at https://www.youtube.com/watch?v=7aV_U0k-lmg