Related by context. Frequent words. (Click for all words.) 59 coal ash 50 TVA 47 TDEC 45 Browns Ferry 44 Watts Bar 40 ash 40 contaminated groundwater 39 impoundments 39 Knoxville 38 Montcoal 38 sediment 38 toxic sludge 37 fly ash 37 sludge 37 polychlorinated biphenyls 37 stormwater 37 cubic yards 37 MDEQ 37 suspended solids 37 Fukushima Daiichi plant 37 Gatlinburg 37 Roane County 37 AmerenUE 36 Great Smoky Mountains 36 leachate 36 Lake Hartwell 36 Massey Energy 35 earthen dam 35 hazardous waste 35 contaminated sediment 35 ADEQ 35 raw sewage 35 TEPCO 35 Fukushima Daiichi 35 coal combustion 35 tailings 35 Newalta 35 wastewater 35 ADEM 35 Disease Registry 35 Continental Connection Flight 35 Sago mine 35 CONSOL 35 Sago Mine 34 contaminated soils 34 Chattahoochee River 34 untreated sewage 34 CNX Gas 34 Cinergy Corp. 34 retention pond 34 Casella Waste Systems 34 Cutcliffe 34 Tennessee 33 spill 33 sewage spills 33 Comair Flight 33 sulfur dioxide emissions 33 UT Knoxville 33 wastewater treatment 33 Entergy Arkansas 33 Colgan Air 33 Eyjafjallajokull volcano 33 coal mine 33 cooling tower 33 Governor Phil Bredesen 33 CH2M Hill 33 FirstEnergy Corp. 33 BP Deepwater Horizon 33 mudflow 33 Army Corps 33 stormwater runoff 33 IEPA 32 sewage 32 SCANA 32 Neuse River 32 Nuclear Regulatory Commission 32 toxic pollutants 32 dredged material 32 Deepwater Horizon 32 Mayon volcano 32 Catawba River 32 coal fired 32 Ameren 32 Lake Lanier 32 silt 32 ITC ^ DeltaCom 32 Davis Besse 32 Morgantown W.Va. 32 DHEC 32 EPD 32 Surface Mining 32 Fukushima Dai ichi 32 BP Macondo 32 radionuclides 32 DEQ 32 AEP 32 contaminated soil 32 Crandall Canyon mine 31 mine tailings 31 spillway 31 retention ponds