Related by context. Frequent words. (Click for all words.) 55 mill tailings 53 transuranic waste 53 evaporation ponds 53 livestock manure 52 polluted groundwater 52 landfill 52 toxic wastes 52 waste 52 contaminated soil 51 tailings 51 toxic waste 51 radioactive wastes 51 hazardous waste 51 Waste Isolation Pilot 51 contaminated soils 50 fracking fluid 50 dumpsites 50 fly ash 49 dredge spoils 49 Waste Treatment 49 dumpsite 49 contaminated sediments 49 mine tailings 48 Biosolids 48 groundwater 48 wastes 48 Municipal Solid Waste 48 Nevada Yucca Mountain 47 woody debris 47 landfilling 47 biosolids 47 contaminate groundwater 47 contaminated groundwater 47 radioactive waste 47 Waste 47 Sediments 47 ash ponds 47 landfills 47 waste repository 47 Tailings 47 Landfill 47 Sanitary Landfill 47 bio solids 46 gravel pits 46 hazardous waste landfill 46 Yucca Mountain repository 46 coal ash 46 Sediment 46 nonhazardous 46 Hazardous waste 46 sewage sludge 46 fracking fluids 46 Umatilla Chemical Depot 46 Hanford Nuclear 46 pollute groundwater 46 Disposal Facility 46 gravel extraction 46 wastewater 46 burial grounds 46 hazardous wastes 46 lawn clippings 46 Yucca Mountain 45 sanitary landfill 45 human excreta 45 dredged material 45 manure 45 lakebed 45 landfilled 44 marine sediments 44 Nuclear Waste 44 civic amenity 44 Skull Valley 44 groundwater contamination 44 hog manure 44 sewage lagoon 44 Landfills 44 Effluent 44 Hanford 44 gravel pit 44 INEEL 44 sludge 44 sediment 44 cattle carcasses 44 plutonium 44 leachate 44 uranium mines 44 RCRA 44 hazardous waste disposal 44 perchlorethylene 43 Hazardous Waste 43 untreated wastewater 43 Dioxins 43 valley fills 43 grass cuttings 43 animal dung 43 dissolved solids 43 crop residues 43 coal slurry 43 gravel quarry 43 streambeds 43 bio remediation