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(Click for frequent words.) 58 bulk vitrification 58 trihalomethanes THMs 56 fracturing fluids 56 wastewater effluent 55 briny wastewater 55 landfill leachate 55 Sodium cyanide 55 dissolved solids 54 hydraulically fracture 54 fracking fluid 54 caustic wastewater 54 Hydrogen sulfide 54 LLRW 53 polluted groundwater 53 hydraulic fracturing fluids 53 industrial wastewaters 53 harmful contaminants 53 Contaminated groundwater 53 naturally occurring radium 53 lampricide 53 Sewage sludge 52 wastewater 52 transuranic wastes 52 total dissolved solids 52 neutralized VX 52 plutonium americium 52 unlined trenches 52 toxic hydrogen sulfide 52 unlined landfills 52 chlorine disinfectant 52 MBTE 51 sewage effluent 51 chlorine ammonia 51 contaminate aquifers 51 nonpotable water 51 hazardous waste incineration 51 Treated wastewater 51 Reverse osmosis 51 Contaminated soil 51 radioiodine 51 swallowing radioactive iodine 51 Hydrogen sulphide 51 trichloroethene 51 regulate ballast 51 unlined pits 51 wastewater discharges 51 bacteria Clostridium botulinum 51 Calcium chloride 51 Rotenone 51 incinerator ash 51 Hydrogen Sulfide 51 radioactively contaminated 51 Sanitary sewer overflows 51 gypsum byproduct 51 coalbed methane wells 50 discharging wastewater 50 dredged sediment 50 radioactive iodide 50 bio solids 50 hydrofracturing 50 VX byproduct 50 pentachlorophenol 50 monocyte derived stem cells 50 NPDES permits 50 radioactive sludge 50 hydrochloric acids 50 disinfection byproducts 50 contaminates groundwater 50 discharging polluted 50 McClusky Canal 50 slurry ponds 50 subsea dispersants 50 potassium permanganate 50 contaminate groundwater 50 stormwater overflows 50 Sulfuric 50 Superfund hazardous waste 50 situ leach mining 50 sulfur trioxide 50 solvent vapors 50 Metachem 50 chlorinated hydrocarbon 50 contaminating groundwater 50 ethylene glycol antifreeze 49 coal slurry 49 Kolke Creek 49 frack fluid 49 chloramine 49 ultraviolet disinfection 49 methylene chloride 49 nonpotable 49 settling ponds 49 ammonium perfluorooctanoate 49 nahcolite 49 wastewater sludge 49 chemical methyl isocyanate 49 gaseous chlorine 49 Ethylene oxide 49 Sodium hydroxide 49 isotope technetium 49 persistent bio accumulative 49 wastewaters 49 Clean Streams Law 49 herbicide Atrazine 49 disinfectant byproducts 49 dechlorinated 49 SDWA 49 EPCRA 49 aluminum dross 49 polluting groundwater 49 acetochlor 49 harmful vapors 49 sulfuric acids 49 drywall emits 49 nitrogenous compounds 49 Leachate 49 chemical perfluorooctanoic acid 49 fluridone 49 biosolids 49 biosolid 48 Septage 48 Activated charcoal 48 biohazardous 48 Sulfur compounds 48 groundwater contaminants 48 aeration tanks 48 unpermitted discharges 48 hydro fracking 48 Muriatic acid 48 polychlorinated biphenyl PCB 48 nonhazardous waste 48 uncontrolled hazardous waste 48 demineralised water 48 hydrocarbon vapors 48 Brackish water 48 Recovery Act RCRA 48 sulfuric acid mist 48 wastewater discharge 48 Groundwater contamination 48 Hydrogen sulfide gas 48 effluent 48 hazardous vapors 48 TTHMs 48 contrast chlorine disinfection 48 phosphorous nitrogen 48 coalbeds 48 groundwater contaminant 48 ferric chloride 48 Repetz 48 haloacetic acids 48 waste decomposes 48 odorous gases 48 Sodium fluoride 48 Hydrochloric acid 48 KI tablets 48 spokeswoman Skylar McElhaney 48 suspected carcinogen 48 atrazine herbicide 48 Obleski 48 Elemental mercury 48 Countywide landfill 48 SPCC regulations 48 chlorides 48 dredge spoils 48 polyaromatic hydrocarbons PAHs 48 degreasing agent 48 perfluorochemicals PFCs 48 hog lagoons 48 calcium bicarbonate 48 reclaimed wastewater 48 Agrico Chemical Co. 48 Carbon tetrachloride 48 aluminum sulfate 48 spokeswoman Heidi Griesmer 48 discharging ballast 48 stormwater discharges 48 Untreated wastewater 48 Total Dissolved Solids 48 termiticides 48 toluene benzene 48 chlorine disinfection 48 cyanides 48 Bromate 48 pollutes groundwater 48 Edge Moor 48 sewage spews 48 sulfolane 47 oily bilge water 47 beachwater 47 gaseous byproducts 47 Chloramines 47 wet scrubber 47 chlorine byproducts 47 hydrocyanic acid 47 PFOAs 47 evaporation ponds 47 Shieldalloy 47 saltwater byproduct 47 reverse osmosis filters 47 sewage sludge 47 underground coal seams 47 differently Widmer Schlump 47 algal toxins 47 aerobic digester 47 hydro fracturing 47 sprayfield 47 hydrofluoric acid 47 Marcellus drillers 47 perchlorethylene toxic 47 hydrogen sulfide 47 phosmet 47 trihalomethane levels 47 mercury sulfur dioxide 47 brine 47 sludges 47 gob piles 47 dichloroethylene 47 fly ash 47 contaminated groundwater 47 Catskill Aqueduct 47 flowback 47 TCE trichlorethylene 47 VX hydrolyzate 47 biohazardous waste 47 HiPOx 47 fluorides 47 hydrolyzate 47 cerium oxide nanoparticles 47 artisanal shafts 47 bio accumulative 47 Perchlorate contamination 47 filter backwash 47 chemical deicers 47 radioactive wastes 47 barium chromium 47 charcoal filters 47 hydrogen sulphide H2S 47 dispersible 47 wastewater effluents 47 microbiological organisms 47 gasified 47 iron sulphate 47 chromated copper arsenate 47 dichloroethene 47 chloride salts 47 toxic polychlorinated biphenyls 47 Hexavalent chromium 47 contaminents 47 pollute groundwater 47 estrogenic compounds 47 Sodium hypochlorite 47 brackish groundwater 47 hypochlorite 47 raw untreated sewage 47 membrane bioreactor 47 orthophosphate 47 anthracite mines 47 deep saline aquifers 47 carcinogenic polycyclic aromatic hydrocarbons 47 RCRA hazardous waste 47 noxious chemicals 47 digester tanks 47 paints solvents pesticides 47 liquid hog manure 47 sludge 47 thermal hydrolysis 46 Radioactive waste 46 dispersants underwater 46 wastewater lagoons 46 phosphorus pollution 46 National Pollution Discharge 46 toxic solvents 46 remove impurities 46 treated effluent 46 Carbofuran 46 microbiological contamination 46 chemical C8 46 alcohol vaporizers 46 polluting waterways 46 ferrous sulphate 46 toxic alkaloids 46 Blakely Ga. peanut 46 THMs 46 ozonation 46 cyclohexane 46 cocaine alkaloid 46 recombinant bovine somatotropin rbST 46 toxic byproducts 46 Carbon monoxide CO 46 air sparging 46 harmful byproducts 46 discharge effluent 46 Croton watershed 46 arsenic selenium 46 Shiranui Sea 46 septic tank effluent 46 unreclaimed 46 waterborne microorganisms 46 arsenic chromium 46 Mechanical Biological 46 ultrafiltration membranes 46 bio degradable waste 46 salty brine 46 siloxanes 46 salty dissolved solids 46 desulfurization gypsum 46 ORSANCO 46 tailings dumps 46 railcar unloading 46 Serum phosphorus 46 methane nitrous oxide hydrofluorocarbons 46 parathion 46 flue gases 46 sodium hydroxide lye 46 tertiary butyl ether MTBE 46 chemical slops 46 liquefied manure 46 mercury emitted 46 bacterial fermentation 46 denaturant 46 Chlorine dioxide 46 Patapsco aquifer 46 PCB contaminated sediments 46 Conestoga Landfill 46 RCRA 46 mercaptans 46 trichloroethene TCE 46 roxarsone 46 unchlorinated water 46 transuranic waste 46 ion exchangers 46 azinphos methyl 46 pyritic rock 46 hazardous waste 46 microcystins 46 aerosolize 46 Fecal coliform 46 septic haulers 46 fuel additive methyl 46 hydraulic fracturing fluid 46 treated sewage sludge 46 atrazine concentrations 46 Halliburton Loophole 46 leachate 46 saxitoxin 46 carbon tetrachloride 46 HAAs 46 calcium hypochlorite 46 dischargers 46 polluted stormwater 46 sulfur gases 46 tritium contamination 46 aboveground storage 46 swine manure 46 nonylphenol ethoxylates 46 ferrous alloys 46 SMCRA 46 hazardous wastes 46 pathogenic micro organisms 46 Shannopin 46 Sodium dichromate 45 flammable corrosive 45 chloramines 45 concentrated brine 45 Marcellus shale formation 45 demineralized water 45 wasterwater 45 DBPs 45 benzyl alcohol 45 Hydrogen Sulfide H2S 45 Septic tanks 45 sediment dredged 45 raw sewage discharges 45 Shannopin Mine 45 sodium aluminate 45 untreated effluent 45 anaerobic fermentation 45 arsenic cadmium chromium 45 allergenic proteins 45 dump untreated sewage 45 Freda Tarbell spokeswoman 45 fecal coliform contamination 45 naturally occurring bacteria 45 toxic hydrogen sulphide 45 taconite tailings 45 parasite cryptosporidium 45 garbage incinerators 45 disinfection byproducts DBPs 45 colorless odorless tasteless 45 benzene toluene xylene 45 radio nuclides 45 Teflon coated cookware 45 botulism bacteria 45 NIETC 45 Agrifos 45 washwater 45 foul smelling odor 45 Larry Hajna spokesman 45 NYSE LYO 45 boiler feedwater 45 biosolid waste 45 mill tailings 45 manure lagoons 45 chemical ammonium perfluorooctanoate 45 dichloroethane 45 PFBA 45 Ionic liquids 45 sodium bisulfite 45 fracking chemicals 45 Methane CH4 45 PCBs polychlorinated biphenyls 45 sulphite 45 Biodegradable plastics 45 sedimentation ponds 45 evaporation pond 45 resorcinol 45 inorganic contaminants 45 immiscible 45 Floridan Aquifer 45 hydrogen sulphide 45 chemical bromate 45 CCMUA 45 Placentas 45 spokeswoman Betsy Mallison 45 hazardous waste landfills 45 opportunistic pathogens 45 L ascorbic acid 45 amphibole asbestos 45 Dioxane 45 John Repetz 45 dechlorination 45 absorbent polymers 45 nonstick substance 45 Ecosphere Ozonix 45 Bayou Verdine 45 DilBit 45 Environmental Quality ADEQ 45 platelet concentrates 45 nonradioactive 45 radioactive isotope tritium 45 fracing fluids 45 benzene arsenic 45 cryoprotectants 45 diquat 45 Methyl mercury 45 Charles Sturcken 45 methylene blue 45 heptane 45 PPCPs 45 flocculant 45 colorless odorless poisonous 45 Agri Cycle 45 lung irritant 45 stormwater discharge 45 synthetic gypsum 45 crystalline silica dust 45 PADEP 45 methyl mercaptan 45 kiln dust 45 benzene carcinogen 45 Sodium chloride 45 carbon monoxide colorless odorless 45 sedimentation basin 45 membrane bioreactor MBR 45 beryllium dust 45 chlorine dioxide 45 effluent discharged 45 nontoxic antifreeze 45 nonhazardous 45 phosphorus fertilizers 45 tailings basin 45 naturally occurring fluoride 45 perfluorooctanoic acid PFOA 45 reinjection 45 larvicides 45 spokeswoman Phillippa Cannon 45 poisonous flammable 45 arsenic boron 45 titanium tetrachloride 45 barium strontium 45 raffinate 45 arsenic barium 45 taconite pellets 45 contaminated soils 45 hydrogen sulfide gases 45 radioactive tracers 45 septage 45 odorized 45 particulate matter soot 45 aerated lagoon 45 blowdown stacks 45 tritiated water 45 Hydrogen Sulphide 45 Unpasteurized milk 45 effluents 45 Beneficial Use Photochemical 45 EtO 45 spokeswoman Clair Boatwright 45 supercritical CO2 45 aquatic herbicides 45 nitrogen oxides carbon monoxide 45 iso octane 45 Badin Works 45 fibrous mineral 45 chromated copper arsenate CCA 45 benzene ethylbenzene 45 spokesman Lawrence Hajna 45 poisonous gasses 44 recharge basins 44 Underground Injection 44 phosphorus discharges 44 inorganic salts 44 purifying tablets 44 tarlike 44 airborne pollutant 44 cement kiln 44 bituminous mines 44 oxidizing agent 44 radium naturally occurring 44 sulfur dioxide nitrogen oxide 44 thin stillage 44 spokesman Farrell Sklerov 44 endocrine disrupting compounds 44 sprayfields 44 effluents discharged 44 Betsy Mallison 44 azelaic acid 44 contaminate groundwater supplies 44 toxic pollutant 44 sewage discharges 44 artificial sweetener saccharin 44 infested hemlocks 44 algaecide 44 NPDES permit 44 chemical pulping process 44 Pitzarella 44 contaminated soil 44 WVDEP 44 Sewage Facilities 44 molten salts 44 toxic waste 44 Chloramine 44 Firdapse ™ amifampridine phosphate 44 vinyl acetate monomer 44 concentrated nitric 44 barium chloride 44 medical radioisotopes 44 nonhazardous materials 44 Trihalomethanes 44 fumigant methyl bromide 44 tremolite asbestos 44 microfiltration reverse osmosis 44 contaminates drinking 44 organochlorine pesticide 44 naturally occurring arsenic 44 radioactive thorium 44 poisonous cyanide 44 infectious prion 44 asbestos contaminated vermiculite 44 anhydrous ammonia fertilizer 44 fluorinated chemicals 44 sulfur dioxides 44 bacterial spores 44 geologic sequestration 44 unlined lagoons 44 removes impurities 44 refractory ore 44 Glenburn Pond 44 calcium magnesium acetate 44 Beet juice 44 anaerobically digested 44 diacetyl vapors 44 Uddyback Fortson 44 Kennecott Minerals Co. 44 Effluent 44 chlorinated solvents 44 leftover semisolid wastes 44 sequester carbon dioxide emissions 44 ultra violet disinfection 44 iron sulfate 44 dump raw sewage 44 copper sulfate 44 ash impoundment 44 frac fluid 44 methyl tert butyl ether 44 froth flotation 44 colorless flammable liquid 44 unredeemed deposits 44 bacteriologically 44 curium 44 Calcium carbide 44 digestate 44 nitrogen oxides sulfur dioxide 44 hydrotreaters 44 rotenone 44 bacterial toxin 44 Volatile Organic Compounds VOCs 44 emit sulfur dioxide 44 Hydrofracking 44 GE ZeeWeed 44 Polluted runoff 44 Norlite 44 leachates 44 IMPACT Tons 44 frac'ing 44 effluent discharge 44 carcinogenic byproducts 44 smog forming chemicals 44 Kathleen McGinty secretary 44 microbial contaminants 44 biofilter 44 carcinogenic pollutants 44 methyl chloride 44 Clearford SBS TM 44 WASTEC 44 cullet 44 Coal Slurry 44 automobile tailpipes 44 sludge lagoons 44 recovers cellulosic biomass 44 pavement sealants 44 sodium borate 44 Tittabawassee River floodplain 44 Corexit dispersant 44 harmful dioxins 44 chemically contaminated 44 horizontal hydraulic fracturing 44 phosphates nitrates 44 elemental sulfur 44 metal degreasing 44 Biscayne Aquifer 44 wastewater residuals 44 landfills incinerators 44 Water softeners 44 ash ponds 44 DDVP 44 hydrofracking 44 dredged sediments 44 oversulfated chondroitin 44 cryogenic liquids 44 MtBE 44 tetrahydrofuran 44 ammonium compounds 44 untreated wastewater 44 Point Loma Wastewater Treatment 44 mercuric chloride 44 vincristine sulfate 44 sulfated chondroitin sulfate 44 herbicide Spike #DF 44 pollutant discharge 44 Rawl Sales 44 undercooked shellfish 44 Italy Novamont SPA 44 injection wells 44 Sulfate 44 tritium laced 44 corrosives 44 nootkatone 44 Hammonasset River 44 sewage overflowed 44 calcium sulphate 44 radiological contaminants 44 sugar beet pulp 44 carcinogenic chemicals 44 wellfields 44 trichloroethane 44 toxic wastes 44 TTHM 44 thiourea 44 Microcystis 44 DecaBDE 44 biodegraded 44 Air Pollutants NESHAP 44 ethyl acrylate 44 sodium dichromate 44 Velsicol 44 sodium hydrosulfide 44 Inorganic arsenic 44 extract bitumen 44 radioactive radium 44 Amy Hartsock 44 N Viro Soil 44 Corexit #A 44 Biosolids 44 Radioactive tritium 44 dioxin laced 43 E. Coli bacteria 43 Boric acid 43 Treated sludge 43 additive MTBE 43 hazardous solvents 43 bedrock aquifers 43 toxic pollutants 43 lindane 43 Chlorination 43 Mercaptan 43 elemental mercury 43 bronchoscopes 43 flue gas 43 euvolemic hyponatremia 43 Nitric acid 43 surface impoundments 43 pollutes waterways 43 airborne particulates 43 desalinate brackish 43 anaerobic bacteria 43 naturally occurring micro organisms 43 pollutant ozone 43 gypsum pond 43 tetrachloroethene 43 gasified coal 43 hydraulic fracturing fracking 43 Marcellus wells 43 contaminated sediments 43 sodium sulfate 43 pyrometallurgical 43 Arlie Stutzman 43 Methyl iodide 43 methyl isocyanate MIC 43 ethane propane butane 43 potent carcinogen 43 fragrances dyes 43 gasify coal 43 radium 43 respirable dust 43 Squaw Creek Mine 43 chlorine 43 smog forming gases 43 reactor fuel rods 43 Ozone disinfection produces 43 plants STPs 43 tailing ponds 43 chlorinating 43 tasteless odorless 43 phosphorous fertilizers 43 polluted sediment 43 filtration membranes 43 trimethylamine 43 Effluent Treatment Plant 43 Myron Arnowitt 43 trihalomethane 43 cyanide ions 43 PennVest loan 43 Hydraulic fracturing 43 frac fluids 43 fracking fluids 43 septage haulers 43 tainted vermiculite 43 pollutant 43 phosphorus runoff 43 toxicants 43 Elimination System 43 industrial solvent trichlorethylene 43 unpasteurised milk 43 coagulant 43 hypochlorous acid 43 interstate compacts 43 busted wellhead 43 ammonium chloride 43 PCBs dioxins 43 algal species 43 spokeswoman Tisha Petteway 43 cellulose hemicellulose 43 magnesium hydroxide 43 Betsy Mallison spokeswoman 43 polybrominated diphenyl ether 43 hydrofluoric acid HF 43 Charbert 43 biphenyls 43 Saint Ambroise facility 43 isotope polonium 43 Charles Sturcken spokesman 43 salmonella bacterium 43 beneficially reused 43 radioactive tritium 43 emulsified oils 43 BPA Bisphenol 43 reusing wastewater 43 molecularly identical 43 phosphine 43 Sulfur dioxide 43 Model Toxics 43 aluminum phosphide 43 MICHAEL REYNOLDS 43 PCA Blakely 43 Carbon monoxide byproduct 43 overpressurized 43 Trichloroethylene TCE 43 Scriba NY 43 toxic dioxins 43 flammable methane 43 metam sodium 43 naturally occurring radioactive 43 fuel additive MTBE 43 Hueco Bolson 43 asphalt millings 43 toxic nitrobenzene 43 Fast breeder reactors 43 effluent discharges 43 PBDEs polybrominated diphenyl ethers 43 reverse osmosis filtration 43 Methyl bromide 43 additive methyl tertiary butyl 43 Qtrax downloads 43 Corn stover 43 sewage 43 Palisades Nuclear 43 arsenic benzene 43 Integrated Gasification Combined Cycle 43 smokestack emissions 43 hydraulically fracturing 43 gasifying coal 43 cancer causer 43 Ciris 43 nonpoint pollution 43 hydrogen sulfide H2S 43 chelating agents 43 Ultraviolet light 43 Marcellus Shale drillers 43 Athabasca watershed 43 Latex paints 43 hazardous waste disposal 43 bedrock aquifer 43 Duchniak 43 coli bacteria 43 pesticide chlorpyrifos 43 iodized table 43 Methane hydrates 43 naturally occurring minerals 43 NIOB interval n 43 scrubber sludge 43 hydrocarbons carbon monoxide 43 microfiltration 43 combustion gases 43 unsorted waste 43 hardrock mine 43 nitrate nitrogen 43 livestock manure 43 desulfurizer 43 oxidises 43 Marcellus Shale wells 43 shale tar sands 43 E.Coli bacteria 43 nickel vanadium 43 ash sludge 43 calcium sulfate component 43 uranium dioxide 43 iron sulfide 43 mosquito larvicide 43 FRAC Act 43 lime slurry 43 toxic solvent perchlorethylene 43 corrosion inhibitor 43 regasified 43 Tonawanda Coke 43 coal ash impoundments 43 bentonite clay 43 Haber Bosch process 43 dewatered 43 bacterial overgrowth 43 Environmental Conservation NYSDEC 43 sediment ponds 43 methemoglobin 43 slag byproduct 43 Untreated sewage 43 Sulfates 43 #,# dichloroethane 43 Nitrosamines 43 Coal gasification 43 underground geologic formations 43 chemical neutralization 43 Earthly microbes 43 Hazardous Sites 43 chlorinated solvent 43 Dredged material 43 Toxicity Characteristic Leaching Procedure 43 iodised 43 odorless tasteless 43 soil fumigant 43 KI pills 43 ingested inhaled 43 Hobet 43 carcinogens mutagens 43 alpha emitters 43 toxic sediments 43 hazardous waste dump 43 radioactive byproducts 43 Sulphuric acid 43 ammonia NH3 43 Scott Mandirola 43 uranium tailings 43 leaching toxins 43 Pyrethrins 43 Pamala Vazquez 43 sugar beet molasses 43 nontidal wetlands 43 Ethylene glycol 43 toxic residues 43 Treated sewage 43 Activated carbon 43 organophosphate pesticide 43 Environmental Protection NJDEP 43 ruminant protein 43 suspended solids 43 Effluents 43 sulfur oxides nitrogen oxides 43 phosphorus pentoxide 43 sodium methylate 43 NPDES 43 polycyclic aromatic hydrocarbon 43 tritium contaminated 43 harmful gasses 43 TxLED 43 Countywide Landfill 43 coal ash 43 dispersant Corexit 43 acrolein 43 Rodenticide Act FIFRA 43 powerful neurotoxin 43 cyanoacrylates 43 sulphide ores 43 Doug Szenher spokesman 43 yellowish liquid 43 process gasifies liquid 43 soluble salts 43 uranium ores 43 Sodium bicarbonate 43 coalbed 43 FFDCA 43 reusable cloths 43 biofiltration 43 Homespun remedies 43 Enviromental Protection Agency 43 sulfur dioxide SO2 emissions 43 residual bitumen 43 frack 43 Transuranic waste 43 depuration 43 exempted fracking 43 HoltraChem 43 acid leaching 43 hog manure 43 Ludder 43 molecular sieve 43 Urushiol 43 peracetic acid 43 salt brine mixture 43 liquid de icers 42 hexachlorobenzene HCB 42 phosphogypsum 42 sporadically emitting 42 Lindane 42 Elimination System NPDES 42 mussel species 42 Paducah Gaseous Diffusion Plant 42 #,# dioxane 42 picocurie 42 phosphine gas 42 particulate matter emitted 42 PCBs dioxin 42 contaminants 42 tui chubs 42 uranium hexafluoride 42 Hydrogen fluoride 42 Skippack Creek 42 grease FOG 42 poisonous hydrogen sulfide 42 microscopic soot particles 42 Combe Fill 42 trunklines 42 vapor degreasing 42 tritium radioactive 42 superheated steam 42 backwashing 42 VX sarin 42 bioaccumulative 42 chlorine bromine 42 Methyl tertiary butyl ether 42 magnesium salts 42 emitting radiation 42 carcinogenic benzene 42 dioxin PCBs 42 mercaptan 42 reverse osmosis RO 42 discharged untreated wastewater 42 Bti 42 Chesapeake Appalachia 42 leaked tritium 42 methane 42 methane CH4 42 Response Compensation 42 Kaunisvaara mill 42 Subtitle C 42 silicon tetrafluoride 42 dehydrogenation 42 nitrate fertilizer 42 nutrients iodine 42 tankered 42 beryllium oxide