Letters to Lessees and Operators

The bureau no longer issues Letters to Lessees and Operators (LTL's).  All notices are now in the form of Notices to Lessees and Operators (NTL's).  This page contains active LTL's which will remain in effect until superseded or rescinded.

• Provide Clarification, Description, and Interpretation with Regard to Pipeline Requirements  (April 18, 1991)