Related by context. Frequent words. (Click for all words.) 53 particulate matter 53 pollutant 52 air pollution 52 Superfund site 52 ozone 51 EPA 50 TCEQ 48 Air Quality 47 particulates 47 emission 47 pollutants 46 NOx 45 particulate 45 Environmental Protection Agency 45 smog 45 Environmental Quality 44 DEQ 44 nitrogen oxide 44 emissions 44 pollution 43 floodplain 43 Clean Air 43 mercury emissions 43 IDEM 42 Adequate Yearly Progress 42 emission reductions 42 groundwater contamination 42 polluter 42 attainment 42 hazardous waste 41 National Weather Service 41 AYP 41 emission reduction 41 brownfield 40 sulfur dioxide 40 Superfund 40 flood plain 39 ppb 39 structurally deficient 39 groundwater 39 Comprehensive Plan 39 VOCs 39 adequate yearly 39 coal ash 38 contaminant 38 counties 38 hazardous 38 unincorporated areas 38 benzene 38 greenhouse gas emission 38 watersheds 38 Clean Water Act 38 perchlorate 38 urbanized 38 carcinogen 37 tailpipe emissions 37 interstates 37 GHG emissions 37 volatile organic compounds 37 nitrogen oxides 37 annexed 37 Metropolitan Planning 37 Emissions 37 polluters 37 brownfields 37 GHG 37 mandatory evacuation 37 Smart Growth 37 aquifer 37 PFOA 37 OSHA 37 FutureGen 36 radon 36 CARB 36 precipitation 36 soot 36 Water Quality 36 livability 36 greenhouse gas 36 landfill 36 contaminants 36 unincorporated 36 INDOT 36 TDOT 36 coal fired 35 greenbelt 35 greenhouse gases 35 emitters 35 Interstates 35 Barnett Shale 35 shovel ready 35 abatement 35 PCBs 35 hazardous substances 34 annexation 34 CDBG 34 greenhouse gas emissions 34 environmentally sensitive 34 chromium 34 mercury 34 federally mandated