All permanent GPS monuments require a permit. In some cases, an environmental assessment may even be required. For a temporary campaign GPS system, one generally needs a permit; however, in some cases, there is a possibility of bypassing a permit for brief use of the land.
About one third of the permits are obtained on land owned by each of: (1) the Federal Government; (2) private landowners; and (3) other parties such as airports, cities, counties, or tribal organizations. Click on chart to enlarge. For more details, see below.
PBO acquired the permits for the more than 1,200 sites which are part of the Plate Boundary Observatory (PBO).
It can happen instantly or never, but most commonly, permits will be granted between a few months and two years.