The NPS cautioned in comments filed to BLM last year that “The construction of the transmission line…will have the potential to impact paleontological resources, including an undetermined number of fossil remains and unrecorded fossil sites,” according to the Public Employees for Environmental Responsibility.
The National Park Service proposed using ground-penetrating radar to detect fossil deposits in the area. Those scans, funded by NV Energy, were completed by Geotech Global Consulting, and the results were published in September. The report described the detection of Pleistocene vertebrate fossils within the national monument.