Regulations and Enforcement

Acts, Regulations, Orders, Notice to Lessees

Onshore Oil & Gas Regulations (43 CFR)

National Onshore Oil and Gas Operating Orders

National Notice-to-Lessee(s) (NTLs)

Colorado Notice-to-Lessee(s) (CO-NTLs), and Information Bulletins

District and Field Office NTLs

  • NTL-MDO-91-1 - Bradenhead Testing in Ignacio-Blanco Field, Southern Colorado
  • NTL-MDO-91-1 (Change 1) - Revises earlier NTL to relax bradenhead testing requirements

Surface Operating Standards ( Gold Book )