Related by context. Frequent words. (Click for all words.) 53 Hobet 49 contaminating groundwater 49 dewater 49 wastewater discharge 48 wastewater discharges 48 Dunkard Creek 47 effluent discharge 46 mine tailings 46 Clean Water Act 46 sediment runoff 45 valley fills 45 tailings disposal 45 tailings 45 nonpoint source pollution 44 impoundments 44 groundwater contamination 44 dewatering 44 selenium 44 coal slurry 43 contaminate groundwater 43 nutrient runoff 43 Surface Mine 43 pollute groundwater 43 Revett Minerals 43 tailings impoundment 42 coalbed methane wells 42 headwater 42 dewatered 42 tailing ponds 42 Conemaugh River 42 mill tailings 42 timber harvesting 42 headwater streams 42 siltation 42 pollution 41 unnamed tributary 41 longwall mining 41 dischargers 41 Revett 41 Tailings 41 gravel extraction 41 MSHA inspectors 41 situ uranium 41 Cabin Creek 41 Berners Bay 41 NPDES permit 41 environmental impacts 41 sewage discharges 41 groundwater pumping 40 evaporation ponds 40 total dissolved solids 40 mine 40 PCBs polychlorinated biphenyls 40 CONSOL 40 Kennecott 40 sulfur dioxide nitrogen oxide 40 mines 40 Coeur Alaska 40 timber harvest 40 Jeff Gillenwater 40 herbicide spraying 40 Occidental Chemical 40 headwaters 40 longwall 40 nutrient loading 40 groundwater 40 timbering 40 sanitary sewer overflows 40 tailings pond 40 tailings dam 39 Superfund cleanup 39 smokestack emissions 39 revegetate 39 polluted groundwater 39 DEQ 39 intermittent streams 39 Lake Tenkiller 39 Controlled burns 39 dissolved solids 39 Tenmile 39 discharges 39 Elimination System 39 diking 39 Muddy Creek 39 TDEC 39 environmental 39 contaminated sediments 39 heavily polluted 38 Elimination System NPDES 38 coalbed methane 38 roadbeds 38 MSHA 38 sedimentation 38 Darby Mine 38 Cadia 38 streambeds 38 stormwater retention 38 NPDES 38 mussel species 38 Rubbertown 38 mercury pollution