Related by context. Frequent words. (Click for all words.) 54 evaporation ponds 47 aquifer recharge 47 mill tailings 47 sewage lagoon 46 retention basins 46 dredge spoils 46 detention basins 45 earthen dams 45 roadbeds 45 wellfield 45 tailings impoundment 45 basin 45 crushed limestone 45 streambeds 44 polluted groundwater 44 gravel pits 44 ponds 44 bottomland 44 storage caverns 44 pumphouse 44 retention ponds 44 heap leach pad 43 lagoons 43 sewage lagoons 43 floodplain 43 berm 43 groundwater pumping 43 basins 43 salt domes 43 gravel 43 storage tanks 42 dam spillway 42 roadbed 42 earthen berms 42 outfall pipe 42 caliche 42 dewatered 42 aquifer 42 liquid manure 42 lakebed 42 bio solids 42 landfill 42 cofferdam 42 gallon propane tank 41 culverts 41 underground aquifer 41 impoundments 41 tailings 41 contaminating groundwater 41 dredged material 41 soils 41 fly ash 41 gravel pit 41 gravel quarry 41 drainage culvert 41 dewater 41 sediment 41 silt 41 rock quarry 41 rip rap 41 groundwater recharge 41 dewatering 41 sludge 41 groundwater 41 acreage 41 coke drums 40 sumps 40 gravel extraction 40 ash ponds 40 coffer dam 40 drainage basins 40 buildable land 40 diking 40 woody debris 40 mine tailings 40 hazardous waste landfill 40 streambed 40 clarifiers 40 lignite coal 40 hectare parcel 40 topsoil 40 acre parcel 40 injection wells 40 wetland 40 sandy soils 40 flood plain 40 wastewater discharge 40 culvert 40 riverbed 40 trunkline 40 Sanitary Landfill 40 riprap 40 wetlands mitigation 40 wetlands 40 acres 40 acre 39 undeveloped parcel 39 undeveloped parcels 39 unnamed tributary 39 creek 39 slurry