Congressional Budget Office Cost Estimate: S. 1694, One Small Step to Protect Human Heritage in Space Act [open pdf - 30KB]
From the Document: "S. 1694 would direct federal agencies that issue licenses to private entities for lunar activities to require applicants to abide by National Aeronautics and Space Administration (NASA) recommendations on protecting historical lunar landing sites and artifacts. Although several agencies issue licenses and permits for space-related activities--including the Federal Aviation Administration and the National Oceanic and Atmospheric Administration--CBO [Congressional Budget Office] is not aware of any agency that issues licenses specifically for lunar activities. We expect that such licenses, if made available, would be issued infrequently. On that basis, and considering the costs of similar tasks, CBO estimates that any administrative costs to implement S. 1694 would be insignificant over the 2020-2024 period; such spending would be subject to the availability of appropriated funds."
Congressional Budget Office: http://www.cbo.gov/