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This data depicts pipeline locations (1:63,360) in Alaska as digitized primarily from 1:24,000, 1:63,360, and 1:250,000 USGS quadrangles. The source document that represented the newest information and best geographic location was used to capture the data. All infrastructure from the primary source document was digitized and then supplemented with the information from other source documents for additional or updated infrastructure or attributes.
Data represents an estimate of oil and natural gas pipeline densities in the intermountain west based on data collected depicting pipeline locations in the study area. These data represent (for the most part) only larger volume, long distance pipelines and not the shorter, lower volume (so-called 'flowlines') associated with specific fluid energy producing sites. HOWEVER, THESE DATA ONLY REPRESENT THAT PORTION OF ACTUAL ON-THE-GROUND AND BURIED PIPELINES THAT HAVE BEEN MAPPED and that we were able to acquire durng th course of our study. THEREFORE, THIS DATASET IS KNOWN TO BE INCOMPLETE. The actual pipline locations are not shown here. Rather this is a grid representing pipeline density in Km/Km^2. DUE TO THE SENSITVE...
This layer represents lines which have been proposed (per the requirements of Section 368 of the Energy Policy Act of 2005) as West-wide energy corridor centerlines for the final "Programmatic Environmental Impact Statement, Designation of Energy Corridors on Federal Land in the 11 Western States", November 2008. The layer was intersected with surface management agency, BLM field office, and state layers to add more tabular attributes.
The U.S. Department of Transportation (USDOT), Research and Special Projects Administration (RSPA), Office of Pipeline Safety (OPS) is working with other federal and state agencies and the pipeline industry to create a National Pipeline Mapping System (NPMS). The NPMS is a full-featured geographic information system (GIS) containing the location and selected attributes of the major natural gas transmission lines and hazardous liquid trunklines, and liquefied natural gas (LNG) facilities operating in the United States and other offshore entities. Michael Baker Jr., Inc. (Baker), as the primary contractor, assumes all responsibility of the NPMS National Repository. Source data is contributed by pipeline operators...
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