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Notice to Lessees (NTLs)

Notices to Lessees and Operators (NTLs) are formal documents that provide clarification, description, or interpretation of a regulation or OCS standard; provide guidelines on the implementation of a special lease stipulation or regional requirement; provide a better understanding of the scope and meaning of a regulation by explaining BSEE interpretation of a requirement; or transmit administrative information such as current telephone listings and a change in BSEE personnel or office address. Letters to Lessees and Operators (LTLs) and Information to Lessees and Operators (ITLs) are also formal documents that provide additional information and clarification, or interpretation of a regulation, OCS standard, or regional requirement, or provide a better understanding of the scope and meaning of a regulation by explaining BSEE interpretation of a requirement.

To view expired or superseded NTLs, select a different NTL status and select submit.

NTL Number Document Summary Status Category Effective Date Posted Date
NTL 1990-G09 ntl90-09.pdf (16.66 KB)


NTL 1989-G07 ntl89-07.pdf (15.34 KB)

Supplemental bonds may be deemed necessary, under the provisions of 30 CFR 256.61 after operations or production have begun, prior to approval of: assignments of interests in leases, designations of operator, exploration plans, development and production plans or development operations coordination documents, or at any other time, where the Minerals Management Service infers that the obligee may not have the financial wherewithal or expertise to carry out the obligations of the lease. Such an inference may be drawn when the obligee has demonstrated a failure to comply with royalty or rental payments, failed to comply with OCS operating regulations, or otherwise indicated a potential inability to carry out the obligations of the lease.

NTL 1989-G05 ntl89-05.pdf (19.83 KB)

This Notice to Lessees and Operators (NTL) implements the Director's authority pursuant to 30 CFR 250.13(b) to approve time periods between operations not to exceed 180 days from the date of the last exploratory drilling operations.

NTL 1988-G07 ntl88-07.pdf (42.51 KB)

There will be a reorganization of the Gulf of Mexico OCS Region Field Operations Office which will result in the establishment of four districts with two subdistrict offices.

NTL 1988-G03 ntl88-03.pdf (14.15 KB)

Pursuant to 30 CFR 250.17, a "Public Information" copy of reports submitted on forms is required. Subpart A of the rule stipulates the information to be made available to the public and identifies the information not available for inspection without the consent of the lessee for certain specified periods on Forms MMS-330 (Well (Re) Completion Report), MMS-331 (Sundry Notice and Reports on Wells), and MMS-331C (Application for Permit to Drill). However, the rule does not specifically address similar data and information submitted pursuant to Subpart K, i.e., on Forms MMS-1866 (Request for Reservoir MER), MMS-1867 (Request for Well MPR), MMS-1868 (Well Potential Test Report), MMS-1869 (Quarterly Oil Well Test Report), and MMS-1870 (Semiannual Gas Well Test Report).

NTL 1988-G02 ntl88-02.pdf (13.79 KB)

Regulatory consolidation rules were published in Federal Register, Vol. 53, No. 63, Friday, April 1, 1988, pp 10596-10777, effective May 31, 1988. Subpart H, "Production Safety Systems, 30 CFR 250.126(b)(1), "Quality Assurance and Performance of Safety and Pollution Prevention Equipment," requires lessee submittal of a list of all certified and noncertified equipment in inventory (installed and in storage) as of April 1, 1988, to the Minerals Management Service (MMS) Deputy Associate Director for Offshore Operations by August 29, 1988.

NTL 1986-G09 ntl86-09.pdf (372.32 KB)

This Notice to Lessees and Operators (NTL) supersedes NTL 80-6 and Letters to Lessees dated November 20, 1980 and February 4, 1985 and is provided pursuant to the Outer Continental Shelf (OCS) Lands Act Amendments of 1978 (43 U.S.C. 1801, et seq), and 30 CFR 250.34 regarding
Environmental Report/Environmental Information requirements for plans submitted in the Gulf of Mexico OCS Region.

NTL 1986-G05 ntl86-05.pdf (36.23 KB)

Lessees and Operators, please note that the Minerals Management Service (MMS) has a new form for Designating an Operator.  The new form, copies enclosed, is designated Form MMS-1123 (September 1985). The old form, 9-1123 (Rev. December 1957) will no longer be acceptable.

NTL 1985-G02 ntl85-02.pdf (22.1 KB)

This Notice to Lessees and Operators (NTL) is provided pursuant to Stipulation No. 5 made a part of certain leases issued pursuant to the January 5, 1984, lease offering in the Eastern Gulf of Mexico, to 30 CFR 250.12(a)(1)(iii) concerning suspensions of operations, to 30 CFR 250.12(d) concerning lease extensions, and to 30 CFR 218.154(a) and (c) concerning payment of rentals and lease anniversary date.

NTL 1983-G03 ntl83-03.pdf (250.85 KB)

In accordance with the provisions of 30 CFR 250.11(a), 250.34-1(k), 250.34-2(n), and 250.34-3, the Minerals Management Service (MMS) has established a shallow hazards program to ensure that exploratory, development, and production operations are conducted with a minimum risk to human life and the environment. This Notice to Lessees and Operators (NTL) specifies the requirements necessary to meet this objective in the Gulf of Mexico OCS Region.

NTL 1973-G03 ntl73-03.pdf (13.76 KB)

Certain potential adverse environmental effects have been recognized in the use of polychlorinated biphenyls (PCB's) in liquid heat transfer units. Until recently, the impact of the introduction of PCB's to the environment has gone unnoticed. However, present research on PCB's has indicated them to be chronically toxic to the ecosystem.

NTL 1972-G09 ntl72-09.pdf (30.52 KB)

A flash fire occurred in the production facilities of a producing platform in OCS waters directly resulting from the ignition of fluid from the heat transfer unit. The liquid phase heat transfer system was being used for heating oil to separate water through a chemical-electric treater. It was also to be used as the heating medium for the glycol system to separate water from gas but that system was not in operation.

NTL 2000-G13 ntl2000-g13.pdf (195.26 KB)

This Notice to Lessees and Operators (NTL) supersedes NTL No. 2000-G09, dated March 29, 2000, on this subject. It makes minor technical amendments and corrects some cited authorities. 1. 30 CFR 250.802(b). Exclusion of pressure safety high (PSH) and pressure safety low (PSL) sensors on downstream vessels in a production train As specified in American Petroleum Institute (API) Recommended Practice (RP) 14C, Section A.4, you must install a PSH sensor to provide over-pressure protection for a vessel.

NTL 2008-P01 08-p01.pdf (330.15 KB)

Clarifies the policy on availability and inspection of electronically stored records for tests of installed surface and subsurface  safety devices "at the lessee's field office nearest to the OCS facility or other locations convenient to the District Manager" within the meaning of 30 CFR 804(b) and 1630(b).  Encourages use of electronic record systems to manage inspections and follow-up activity via request for alternate compliance procedure under 30 CFR 250.141. 

Active Oil & Gas Production Safety Systems
NTL 2006-P01 06-p01.pdf (487.6 KB)

The Chief, Office ofFacilities, Safety and Enforcement (OFSE) requires all Pacific OCS Region (POCSR) lessees or right-of-way applicants (you) to perform an analysis of seafloor and subsurface geologic and manmade hazards of all areas considered for production platforms and pipelines (30 CFR 250.242(b), 250.906 and 250.1007 (a)(5)). Hazards analysis is the process ofidentifying and evaluating conditions that might affect the safety ofproposed operations or conditions that might be affected by the proposed operations.

NTL 1998-G26 98-26.pdf (32.24 KB)

This Notice to Lessees and Operators (NTL) supersedes NTL No. 92-02. It is issued to update the cited regulatory authorities and to include a statement regarding the Paperwork Reduction Act of 1995. This NTL is provided under the authority of 30 CFR 250.104(b). According to 30 CFR 250.105(a), 250.702(i), 250.704, 250.913 (a), (b), and (c), and Section 22 of the Lease Agreement pertaining to removal of property on termination of the lease, the Minerals Management Service (MMS) has established a program designed to ensure that any object (i.e., wellheads, platforms, etc.) installed on an Outer Continental Shelf (OCS) lease is properly removed and the site cleared so as not to conflict with other uses of the OCS.

NTL 2009-G37 ntl2009-g37.pdf (95.7 KB)

This Notice to Pipeline Right-of-way Holders (NTL) supersedes NTL No. 2008-G23 on this subject. It extends the time period during which certain pipeline right-of-way (ROW) grants will not expire from November 20, 2009, to June 1, 2010, to allow sufficient time for repairs to be completed on pipelines damaged by Hurricanes Gustav and/or Ike.

NTL 2006-N06 ntl2006-n06.pdf (113.23 KB)

This NTL provides guidelines for flaring and venting approvals and updates personnel contacts. It supersedes NTL No. 2003-P04, dated May 18, 2003; NTL No. 2004-G08, dated April 21, 2004; and NTL No. 2005-G04, dated March 1, 2005. Flaring is the burning of gas in the field as it is released into the atmosphere. Venting is the release of gas into the atmosphere without igniting it. Venting includes gas that is released underwater and bubbles to the atmosphere.

NTL 2004-N02 ntl2004-n02.pdf (67.28 KB)

The 2004 Minerals Management Service (MMS) Industry Awards Program and Luncheon are scheduled for Tuesday, April 27, 2004, at the Inter-Continental in Houston, Texas. This is the 21st year that MMS has honored outstanding companies for their exemplary safety and pollution prevention records, and the sixth year for our industry awards program.

NTL 2011-N11 11-n11.pdf (328.23 KB)

Provides clarification of regulatory requirements for safe and environmentally sound use of subsea pumping as a minerals recovery method in subsea development projects.  Sets forth information requirements for DWOPs (and revisions of DWOPs). Describes examples of equipment and procedures sufficient to meet current expectations of safe, protective operations.

Active Oil & Gas Production Safety Systems, Pipelines and Pipeline Rights-of-Way, Plans and Information
NTL 2006-G04 06-g04.pdf (178.1 KB)

This Notice to Lessees and Operators (NTL) supersedes NTL No. 2001-G09 on this subject. It changes the provision under “Automatic Approvals” to allow for the use of a U.S. Coast Guard type and size rating “B-II” portable dry chemical unit (with a minimum UL Rating (US) of 60- B:C) or a 30-pound portable dry chemical unit, in lieu of a water system, on all platforms that are both minor and unmanned.

NTL 2009-G31 09-g31.pdf (94.27 KB)

Clarifies information regarding the interpretation of Hydrogen Sulfide presence determinations using NACE Standard MR0175-2003.  Restates adoption of the NACE standard as best available and safest technology [BAST] for when use of equipment to prevent sulfide cracking and stress corrosion is required at OCS worksites.

Active Pollution Prevention and Control, Well Operations and Equipment
NTL 2009-G29 09-g29.pdf (73.28 KB)

Clarifies that all pipeline location information is to be reported and submitted in North American Datum (NAD) 27, so as to ensure that surface location data and final location plats for drilling activities, wells, platforms and pipelines are sufficiently accurate.

Active General Requirements, Plans and Information
NTL 2009-G25 09-g25.pdf (234.33 KB)

Offers guidance for when you must shut-in producible wells during rig moves or move a skid or drilling unit between wells as supported by a platform.  The NTL describes various types of rigs and phases of rig movement, and specifies when wells must be shut in and how to delineate the documentation provided to MMS.

Active Decommissioning Activities, Oil and Gas Drilling Operations, Oil and Gas Well Completion Operations, Oil and Gas Well Workover Operations
NTL 2009-G10 09-g10.pdf (21.37 KB)

Updates prior NTL to specify requirement to use a checklist of information regarding jack-up rig fitness using Form MMS-123 to assure the rig is capable of performing at the proposed location.   Clarifies the MMS form is based on information provided at API Recommended Practice 95J.

Active Oil and Gas Drilling Operations