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Environmental Assessment <br /> ABBREVIATIONS AND ACRONYMS <br /> LPC La Plata County, Colorado <br /> LPCLUC La Plata County Land Use Code <br /> LSC LSC Transportation Consultants, Inc. <br /> LUP Land Use Permit <br /> in meters <br /> MBTA Migratory Bird Treaty Act <br /> MLA Mineral Leasing Act of 1920 <br /> MMBtu one million British thermal units <br /> MP mile post <br /> MPDD mining plan decision document <br /> mph miles per hour <br /> MSHA Mine Safety and Health Administration <br /> N20 nitrous oxide <br /> NAAQS National Ambient Air Quality Standards <br /> NEPA National Environmental Policy Act <br /> NH3 ammonia <br /> NHPA National Historic Preservation Act <br /> NMPM New Mexico Principal Meridian <br /> NO2 nitrogen dioxide <br /> NOX oxides of nitrogen <br /> NRHP National Register of Historic Places <br /> 03 ozone <br /> OEM Office of Emergency Management <br /> OPC opinion of probable cost <br /> OSMRE Office of Surface Mining and Reclamation Enforcement <br /> PaleoWest PaleoWest Archaeology <br /> PAP Permit Application Package <br /> Pb lead <br /> PFYC Potential Fossil Yield Classification <br /> PHC Probable Hydrologic Consequences <br /> PL Public Law <br /> PM10 particulate matter emissions that are less than 10 microns in diameter <br /> PM2.5 particulate matter emissions that are less than of 2.5 microns in diameter <br /> ppm parts per million <br /> PRPA Paleontological Resources Preservation Act of 2009 <br /> PSD Prevention of Significant Deterioration <br /> R2P2 Resource Recovery and Protection Plan <br /> RCP Representative Concentration Pathways <br /> RF radiative forcing <br /> DOI-B LM-CO-S010-2011-0074-EA <br /> September 2017 <br />