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UNITED STATES DEPARTMENT OF THE INTERIOR
MINERALS MANAGEMENT SERVICE
GULF OF MEXICO OCS REGION
| NTL No. 2003-G03 |
Effective Date: January 23,
2003 |
NOTICE TO LESSEES AND OPERATORS
OF FEDERAL OIL, GAS, AND SULPHUR
LEASES IN THE OUTER CONTINENTAL SHELF, GULF OF MEXICO OCS REGION
Remotely Operated Vehicle Surveys in Deepwater
This Notice to Lessees and Operators (NTL) supersedes NTL
No. 2001-G04, effective June 1, 2001, and is being issued to provide for
remotely operated vehicle (ROV) surveys in an eighteenth grid area, covering a
portion of the Eastern Planning Area of the Gulf of Mexico. The NTL is issued
according to 30 CFR 250.103 and provides guidance with regard to ROV surveys and
reports in deepwater areas (water depths greater than 400 meters) of the Gulf of
Mexico.
Introduction and Background
The Minerals Management Service (MMS) Gulf of Mexico OCS
Region (GOMR) has developed a strategy to ensure sound National Environmental
Policy Act (NEPA) compliance for postlease activities in deepwater areas of the
Central Planning Area, the Western Planning Area, and a portion of the Eastern
Planning Area of the Gulf of Mexico. This strategy is outlined in a document
that you can access on the Internet at
http://www.gomr.mms.gov/homepg/regulate/environ/ea_grid/NEPADWSTRATEGY.PDF
The strategy was developed because the MMS GOMR is
concerned that activities related to development in deepwater areas may have
localized impacts on benthic communities, if such communities exist near the
well or well cluster (template) site. These localized impacts are described in
the report, “MMS Deepwater Operations and Activities Environmental Assessment”
(MMS 2000-001).
To carry out this deepwater strategy, the MMS GOMR needs
information to verify the effectiveness of existing requirements and
mitigations. Accordingly, under the authority found at 30 CFR 250.203(o) and 30
CFR 250.204(s), the MMS has established a program to acquire information from
ROV surveys you conduct both before and after certain activities in deepwater
areas of the Gulf of Mexico.
The MMS GOMR will continue to approve OCS plans based on
existing information regarding the general nature of the seafloor in deepwater
areas. If the ROV survey information indicates that previously unknown,
high-value bottom communities exist, such information could lead to future
alterations in the review process; however, it would not affect the current
operation.
ROV Survey Plans
Include an ROV survey plan as an integral part of each
Exploration Plan (EP) that proposes activities in the deepwater area of the
Central Planning Area, the Western Planning Area, and a portion of the Eastern
Planning Area of the Gulf of Mexico. Submit also an ROV survey plan with the
first Development Operations Coordination Document (DOCD) proposing a surface
structure in each of 18 grid areas. (See Attachment No. 1, Grid Map for ROV
Surveys, which shows the 18 established grid areas.) Include the following
information in each ROV survey plan:
- a statement that you are familiar with the ROV survey and
reporting provisions of this NTL;
- a brief description of the survey you plan to conduct,
including timeframes, proposed transects, and the equipment you will use; and
- a statement that you will make biological and physical
observations as described in this NTL and the ROV survey form during two
periods of operations:
- Prespudding (survey performed from the facility) and
- Postdrilling (prior to facility removal).
The GOMR will notify you in the approval letter for your EP
or DOCD whether or not you will need to actually conduct the ROV survey you
propose. The GOMR will base this decision on whether the grid area that contains
your proposed activities has already received adequate ROV survey coverage.
Before you submit an EP, you may consult the aforementioned
Internet address for information about the location and status of previously
conducted and ongoing ROV surveys. When MMS determines that sufficient ROV
information has been gathered for a particular grid, the website will indicate
that all subsequent EP’s proposing activities in that grid need not contain an
ROV survey plan. If that is the case, provide a statement indicating this
information in your EP in lieu of the ROV survey plan.
Performing an ROV Survey
- Perform a visual survey of the seafloor in the vicinity
of your proposed well or well cluster (template) site using an ROV equipped
with video imaging capabilities.
- For each well or well cluster site, conduct this ROV
survey on two separate occasions, one immediately before you begin your
activities and the other immediately after you complete all activities at the
site.
- Run the ROV along at least six transects. Make sure
that each of the six excursions extends at least 100 meters from the launch
point and that at least one transect passes directly over or very near the
well or well cluster site. We suggest that the transect pattern consist of
track lines located at 60-degree intervals.
- Videotape the seafloor continuously during the entire
survey. You may want to obtain additional imagery, such as scanning sonar,
that may help depict bottom conditions.
- Run the ROV close enough to the seafloor so that you
can observe and identify relatively small animals and features (one inch and
larger) on the resulting videotape. When you encounter each type of animal for
the first time, stop the ROV momentarily so that you can take close-up video
footage. Try also to get close-up images of each bottom type and other
interesting features on the videotape as they are encountered. Additional
detail concerning how to conduct the surveys, along with answers to common
questions, can be found on the website mentioned above.
Recording Information from Your ROV Surveys
Use the ROV Survey Report (Form MMS-141) or a reasonable
facsimile to record basic biological and physical information from your
observations of the videotape during both of the ROV survey excursions (see
Attachment No. 2). If you prefer, you can download a copy of this form from the
aforementioned website. Log all major events, including transect starts and
stops, and visual sightings of deepwater animals and bottom conditions on the
ROV Survey Log Sheet on page 2 of Form MMS-141. No scientific expertise is
required to do this; simply do the best job possible. In describing your
observations, you can refer to the pictures of many common deep-sea animal
groups and seafloor types on pages 3 and 4 of Form MMS-141, or just provide
simple descriptions.
We have found that the seafloor is generally a rather
featureless plain with relatively few visible animals and minimal currents.
Ensure that you provide an account of the types of animals you do encounter and
the appearance of the seafloor, such as color and texture. We are interested in
all observations of animals, indications of currents such as ripple marks, and
bottom types. Of particular interest is your observation of any hardbottom areas
or outcrops with attached animals.
For additional information on the appearance of
chemosynthetic communities, consult the following websites:
http://www.gomr.mms.gov/homepg/regulate/environ/chemo/chemo.html and
http://www.bio.psu.edu//cold_seeps/index.html
Show the time and counter number for each of these
observations. Show the tracks in the survey report with transect numbers, times,
and bearings indicated so that video images may be later located in relation to
the well or well cluster site and using the videotape timelines.
Submitting the Results of an ROV Survey
Submit the completed Form MMS-141 or facsimile to the GOMR
within 60 days after you complete the final ROV survey. Submit also, all of the
videotapes and any other imagery you may have obtained, such as ROV scanning
sonar data, that could help depict bottom conditions. Mail the form and
videotapes/sonar data to the address below:
U.S. Department of the Interior
Minerals Management Service
Office of Field Operations
Attention: Plans Section (MS 5230)
1201 Elmwood Park Boulevard
New Orleans, Louisiana 70123-2394
Paperwork Reduction Act of 1995 Statement
The information collection referred to in this NTL provides
clarification, description, or interpretation of requirements contained in 30
CFR 250, Subpart B. The Office of Management and Budget (OMB) approved the
information collection requirements for these regulations and assigned OMB
Control No. 1010-0049. This NTL does not impose additional information
collection requirements subject to the Paperwork Reduction Act of 1995.
Contacts
Contact Mr. Nick Wetzel ((504) 736-2419) of the GOMR Plans
Section if you have any questions concerning ROV survey plans or EP’s and DOCD’s.
Contact either Dr. Robert Rogers ((504) 736-2898) or Mr. Greg Boland ((504)
736-2740) of the GOMR Environmental Sciences Section if you have any questions
regarding ROV surveys and reporting.
Chris C. Oynes
Regional Director
Attachments