Related by context. Frequent words. (Click for all words.) 56 mountaintop mining 56 mountaintop removal 52 coal ash 52 mountaintop removal mining 51 MSHA 50 floodplain 50 Clean Water Act 48 tailings 48 watersheds 47 DEQ 47 coal mines 47 sediment 47 groundwater 47 mines 46 coal seams 46 flood plains 46 coal mining 46 wetlands 46 sedimentation 45 mercury emissions 45 CAFOs 44 headwaters 44 flood plain 44 ADEQ 44 sulfur dioxide emissions 44 Superfund sites 44 fracking 43 aquifers 43 Environmental Quality 43 pollutants 43 TCEQ 43 mercury pollution 43 floodplains 43 wetland 43 roadbed 42 EPA 42 mine 42 cubic yards 42 silt 42 quarries 42 DEP 42 tributaries 41 environmental impacts 41 coal 41 aquifer 41 Superfund site 41 dams 41 dredging 41 roadless 41 Environmental Impact Statement 41 septic systems 41 dewatering 41 mining 40 coal fired 40 groundwater contamination 40 ADEM 40 drainages 40 Crandall Canyon 40 hydraulic fracturing 40 pollutant 40 uranium mines 40 coal seam 40 roadless areas 40 topsoil 40 coalbed methane 40 CAFO 40 Yucca Mountain 39 NRC 39 hog farms 39 culverts 39 sediments 39 pollution 39 exploratory drilling 39 livestock grazing 39 quarry 39 retention ponds 39 floodway 39 dredge 39 river basin 39 uranium mining 39 soils 39 Powder River Basin 39 waterways 39 coal combustion 39 Sago Mine 39 landfills 38 IDEM 38 contaminants 38 stormwater 38 Mine Safety 38 damming 38 soil erosion 38 coal mine 38 bull trout 38 gravel pit 38 SWEPCO 38 steep slopes 38 sinkholes 38 Army Corps 38 MPCA 38 conservation easements