Digital Maps and Geospatial Data | Princeton University

Shapefile Format –The BLM Colorado State Office periodically generates the GIS dataset for authorized and pending coal lease cases. Lease records are selected from BLM’s LR2000 database for the following case types:340001 –Coal lease341001 –Coal exploration license342001 –Regional coal lease - competitive342504 –Regional competitive emergency/bypass342505 –Non-regional competitive coal lease - LBA342506 –Coal lease - hardship343001 –Coal lease preference right. A Python script then uses the legal land descriptions contained in the extracted LR2000 records to generate a shapefile. BLM’s Geographic Coordinate Database (GCDB) is used as a geographic reference to create the polygon features in the lease GIS dataset. The GIS dataset is projected to NAD83/UTM13N and any geometry errors introduced during processing are repaired.Display generalized authorized and pending coal lease cases created from LR2000 records.Description of the Error Spreadsheet: BLM uses a Python script to automatically generate polygon shapefiles from legal land descriptions contained in LR2000 records. The script does this by looking for a polygon in BLM's GCDB database to match the LR2000 land description and then cloning or subdividing the polygon in the new shapefile. The error spreadsheet that accompanies the downloadable data contains LR2000 records which the script wasn't able to match to GCDB polygons. This typically occurs for one of two reasons. Either the LR2000 record didn't contain a valid legal land description, or the script wasn't able to find a unique polygon in the reference GCDB database to match the legal land description provided in LR2000.A published revision of the Department Manuals Part 305: Departmental Science Effects, Chapter 3: Integrity of Scientific and Scholarly Activities (305 DM 3), effective December 16, 2014, is available online at http://elips.doi.gov/ELIPS/DocView.aspx?id=4056. Scholarly information considered in Departmental decision making must be robust, of the highest quality, and the result of as rigorous scientific and scholarly processes as can be achieved. Most importantly, it must be trustworthy. This policy helps us to achieve that standard (http://www.doi.gov/scientificintegrity/index.cfm)BLM Colorado - Coal Lease Cases (Authorized and Pending)