H. Rept. 116-427: Sinkhole Mapping Act of 2019, Report to Accompany H.R. 496, Including Cost Estimate of the Congressional Budget Office, June 4, 2020 [open pdf - 347KB]
From the Purpose of the Bill: "The purpose of H.R. 496 is to direct the Director of the United States Geological Survey to establish a program to map zones that are at greater risk of sinkhole formation, and for other purposes."
H. Rept. 116-427; House Report 116-427
U. S. Government Publishing Office: http://www.gpo.gov/