(Chris Detrick | Tribune file photo) Dave Treanor works with his horses in Escalante Wednesday July 29, 2015. Erin and Dave Treanor own Rising DT Ranch Horse Tours, providing horseback tours around Utah’s Grand Staircase National Monument. A new Utah State University study says landscape-sized national monuments such as Bears Ears and Grand Staircase Escalante have a nuanced economic effect on nearby communities that is neither "boon nor bane."