Unknown since the natural gas reserves aren’t proven. Additionally, BLM has put so many restrictions on the industry that there won’t be much exploratory drilling. Obviously roads will degrade the grasslands but one of the restrictions is that they have to drill multiple wells from the same drill pad so the impact is less.
This sounds like it parallels the situation of the wildlife preserve in Alaska. The maximum footprint expected from drilling is literally minuscule compared to the overall size of the land in question. This is bureaucracy run amok, not sound wildlife management.