Related by context. Frequent words. (Click for all words.) 54 Marcellus wells 49 wells 49 drillers 47 injection wells 47 fracking fluid 46 reinjection 45 dewater 45 fly ash 44 coalbed methane 44 slurry 44 Marcellus Shale drilling 44 dewatered 43 COGCC 43 coal seams 43 natural gas 43 wastewater 43 Kuparuk 43 total dissolved solids 43 fracing 42 wells drilled 42 hydraulic fracturing 42 groundwater 42 wastewater discharges 42 DEP 42 dewatering 42 DEQ 42 proppant 42 sumps 42 fracking fluids 42 AmerGen 42 polluted groundwater 42 Columbia Gas Transmission 42 wastewater discharge 42 Marcellus Shale 41 submersible pumps 41 dissolved solids 41 borewells 41 smokestack emissions 41 Barnett Shale 41 extraction 41 groundwater pumping 41 drilling 41 Marcellus 41 brine 40 frack 40 fracking 40 hog manure 40 wellfield 40 MMCFD 40 fracs 40 TDEC 40 CBM 40 Petro Reef 40 acreage 40 dredged material 40 flowback 40 frac 40 Neslin 40 shale formations 40 liquid manure 39 ADEQ 39 Petrosearch 39 Marcellus Shale formation 39 reservoirs 39 shale 39 horizontal wells 39 Powder River Basin 39 gasline 39 subsurface 39 chlorides 39 biosolids 39 drilling fluids 39 coal 39 sorbent 39 Biosolids 39 OEPA 39 coal slurry 39 Marcellus shale 39 aquifers 39 bed methane 39 sludge 39 sewage sludge 39 septage 39 groundwater remediation 39 MegaWest 39 coal seam 39 underground aquifer 39 Arkoma 39 compressor stations 39 horizontal drilling 39 CNX Gas 39 absorbents 38 gas 38 basins 38 bio solids 38 liquids 38 valley fills 38 Marcellus Shale Coalition 38 poultry manure 38 TCEQ 38 backfill