UNITED STATES DEPARTMENT OF THE INTERIOR
MINERALS MANAGEMENT SERVICE
GULF OF MEXICO OCS REGION
NTL No. 98-09
August 10, 1998
NOTICE TO LESSEES AND OPERATORS AND PIPELINE RIGHT-OF-WAY HOLDERS IN
THE OUTER CONTINENTAL SHELF, GULF OF MEXICO OCS REGION
Proposed and As-Built Pipeline Location Data
This notice supersedes Notice to Lessees and Operators and Pipeline Right-of-way Holders (NTL) 97-08, dated March 14, 1997, and updates the cited regulatory authorities and includes a statement regarding the Paperwork Reduction Act of 1995.
This notice describes how the Minerals Management Service Gulf of Mexico OCS Region (GOMR) will collect digital pipeline location data for our new pipeline mapping system. The new mapping system is being developed to provide up-to-date pipeline location information to the oil and gas industry and the general public.
Effective April 1, 1997, you will submit proposed and as-built pipeline route data in digital format to the GOMR in accordance with 30 CFR 250.1007(a)(1) and 30 CFR 250.1008(b). This NTL describes the acceptable file format and the timing for the submittal of pipeline location data to the GOMR. This pipeline location data must be submitted in decimal degree latitude and longitude based on the North American Datum (NAD) of 1927. Data collected as NAD 83 must be submitted as NAD 27 equivalents derived using NADCON software, version 2.0 or better.
Pursuant to 30 CFR 250.1007(a)(1), you will submit to the GOMR, Office of Field Operations, Pipeline Section, 1201 Elmwood Park Boulevard, New Orleans, Louisiana 70123, MS 5232, a 3 ½-inch diskette containing the digital coordinates of key points of proposed pipeline routes in a fixed format ASCII file, with all applications for new lease term and right-of-way pipelines and applications to modify the routes of existing pipelines, submitted in accordance with 30 CFR 250.1000(b). Applications to modify the routes of existing pipelines will include digital location data for the entire pipeline segment, including the modified portion. The location data must include sufficient points to provide an accurate representation of the proposed route, including turns. The format of the ASCII file for proposed pipeline routes is outlined in the attached Appendix titled “Format for GOMR Pipeline Route Data Files.”
Pursuant to 30 CFR 250.1008(b), you will submit the digital as-built coordinates of key points of new or recently modified pipeline routes in a fixed format ASCII file. The as-built data for modified pipelines will include data for the entire pipeline segment, including the modified portion. As-built location data can be submitted to the GOMR via e-mail at pipeline_unit@mms.gov or via regular mail on 3 ½-inch diskette. The format of the ASCII file for as-built pipeline routes is outlined in the attached Appendix.
We encourage you to submit the required digital pipeline as-built data to the GOMR as soon as possible after the pipeline is laid, prior to submittal of the final pipeline construction report, so that it can be provided to the oil and gas industry and the general public. The final pipeline construction report for new and modified pipelines, including the certified location plat, will continue to be due no later than 90 days after completion of pipeline construction in accordance with 30 CFR 250.1008(b). The pipeline construction report will certify the accuracy of the previously submitted digital as-built pipeline location data. Three copies of the pipeline construction report are required.
Any questions concerning this notice should be directed to the GOMR, Pipeline Section, at (504) 736-2545.
Paperwork Reduction Act Statement
The information collection provisions of this notice are intended to provide clarification, description, or interpretation of requirements contained in 30 CFR 250, Subpart J. The Office of Management and Budget (OMB) has approved the information collection requirements for these regulations and assigned OMB Control Number 1010-0050. This notice does not impose additional information collection requirements subject to the Paperwork Reduction Act of 1995.
Chris C. Oynes
Regional Director
Attachment
APPENDIX
Format for GOMR Pipeline Route Data Files
The GOMR pipeline mapping system uses digital pipeline location data stored in an Oracle database. All points must be in decimal degree latitude and longitude based on the North American Datum (NAD) of 1927. Data collected as NAD 83 must be submitted as NAD 27 equivalents derived using NADCON software, version 2.0 or better. Longitude is always a negative number for the Gulf of Mexico. The following fixed ASCII file format is required for uploading pipeline route location data into the GOMR database:
Start Position Length Type Data 1 7 MMS assigned pipeline Segment Number* 8 4 Sequence Number (Number of the point, starting with 1) 12 12.8 Latitude (Decimal Degrees) 24 13.8 Longitude (Decimal Degrees - Negative) 37 15 Point Description Code** 52 200 Remarks or Point Description***
*For new proposed pipeline routes leave the segment number blank. The segment number will be assigned by the Pipeline Unit when the application is received.
**The point description code is a code to indicate the general description of the location where the point is recorded. The following are acceptable values for the point description code:
Code Value Value Definition RISER The point represents a riser. CROSSING The point represents a crossing pipeline. TIE-IN The point represents a subsea tie-in. BLOCK LINE The point represents a block boundary. VALVE The point represents a main-line or side-tap valve. Blank space The point represents a non-significant data point.
***The Remarks or Point Description column is optional and can be used to list any miscellaneous information you want to provide for the data point.
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