Related by context. Frequent words. (Click for all words.) 66 landfill 61 contaminating groundwater 61 sewage lagoon 60 contaminated soil 59 contaminated soils 59 evaporation ponds 59 hazardous waste landfill 59 polluted groundwater 57 dredge spoils 57 ash ponds 56 incinerator 56 landfills 56 hazardous waste 55 groundwater contamination 55 Landfill 54 tailings 54 mine tailings 54 sediment 54 gravel pits 53 contaminated sediments 53 fly ash 53 gravel pit 53 wastewater discharge 53 effluent discharge 53 dredged material 53 Disposal Facility 53 groundwater 53 hazardous waste disposal 52 Sanitary Landfill 52 mill tailings 52 leachate 52 toxic waste 51 contaminated sediment 51 cubic yards 51 sewage lagoons 51 dumpsite 51 contaminated groundwater 51 contaminants 51 Superfund cleanup 51 outfall pipe 51 wellfield 51 rock quarry 51 sanitary landfill 50 effluent 50 wastewater treatment 50 waste disposal 50 DEP 50 Hazardous waste 50 Superfund site 50 coal ash 50 Superfund Site 50 lagoons 50 Sediment 50 Landfills 50 roadbeds 49 silt 49 quarry 49 wastewater 49 dewatering 49 retention basins 49 sludge 49 DEQ 49 septic systems 49 impoundment 49 crushed limestone 49 radioactive wastes 49 PCB contamination 49 transuranic waste 49 contamination 49 noxious odors 49 contaminate groundwater 49 bridge abutments 49 outfall 49 bio solids 48 trichlorethylene 48 pumphouse 48 compost piles 48 cleanup 48 sumps 48 IEPA 48 diking 48 Illegal dumping 48 septic tanks 48 livestock manure 48 unnamed tributary 48 streambed 48 underground aquifer 48 PCBs 48 gravel quarry 48 topsoil 48 retention ponds 48 valley fills 48 landfilling 47 wetlands 47 sewage treatment 47 chlorinated solvents 47 impoundments 47 OEPA 47 septic 47 dumpsites 47 sewage