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(Click for frequent words.) 76 polychlorinated biphenyls PCBs 74 Polychlorinated biphenyls 73 PCBs 71 polychlorinated biphenyl 70 trichloroethene TCE 70 polychlorinated biphenyl PCB 70 biphenyls 69 PCBs dioxins 69 toxaphene 69 polychlorinated biphenyls 68 tetrachloroethene 68 Chlordane 68 polyaromatic hydrocarbons 67 perfluorinated chemicals 67 organochlorines 67 biphenyls PCBs 67 trichloroethane 66 trichloroethene 66 heptachlor 66 Chromium VI 66 tetrachlorethylene PCE 66 polynuclear aromatic hydrocarbons 65 Hexavalent chromium 65 DDT PCBs 65 Vinyl chloride 65 polybrominated diphenyl ether 65 TCE trichlorethylene 65 suspected carcinogen 65 chlorinated solvents 65 PCBs pesticides 65 tetrachlorethylene 65 dieldrin 65 arsenic chromium 65 perfluorooctanoic acid PFOA 65 pentachlorophenol 64 benzene toluene xylene 64 chlordane 64 trichlorethylene TCE 64 PDBEs 64 arsenic selenium 64 PAHs polycyclic aromatic hydrocarbons 64 bioaccumulative 64 chlorinated compounds 64 carbon tetrachloride 64 Fecal coliform 63 benzene carcinogen 63 polychlorinated vinyls 63 flame retardants PBDEs 63 organochlorine pesticides 63 glycol ethers 63 tetrachloroethene PCE 63 chlorinated pesticides 63 trichlorethylene 63 polybrominated diphenyl ethers 63 Polychlorinated Biphenyls 63 hormone disrupter 63 polybrominated 63 mercury dioxins 62 contaminants 62 perfluorochemicals 62 HBCD 62 dioxins 62 cadmium arsenic 62 hexachlorobenzene 62 Polychlorinated biphenyls PCBs 62 arsenic cadmium chromium 62 Dieldrin 62 arsenic benzene 62 carcinogenic PCBs 62 PFCAs 62 Trichloroethylene 62 cadmium chromium 62 mercury arsenic 62 DDT dieldrin 62 carcinogenic chemicals 62 PCBs dioxin 62 trihalomethanes THMs 62 PFOAs 62 perfluorooctane sulfonate 62 dioxin concentrations 62 Toxic chemicals 62 beryllium dust 61 carcinogenic byproducts 61 fibrous mineral 61 perfluorinated compounds 61 pollutants 61 Contaminants 61 endocrine disrupting chemicals 61 toxic chemicals 61 banned pesticide DDT 61 aromatic amines 61 DuPont DeLisle plant 61 organochlorine 61 drywall emits 61 degreasing solvent 61 microcystins 61 inorganic contaminants 60 THMs 60 diphenyl ethers 60 Polybrominated 60 toxic polychlorinated biphenyls 60 Trichloroethylene TCE 60 contaminant 60 Dioxins 60 pthalates 60 arsenic barium 60 triclocarban 60 toxic pollutant 60 endrin 60 perfluorooctane sulfonate PFOS 60 groundwater contaminant 60 mercury PCBs 60 toxic dioxins 60 cadmium hexavalent chromium 60 arsenic manganese 60 carcinogenic substance 60 deca BDE 60 chlorinated hydrocarbon 60 chemicals 60 biphenyl 60 toxic substances 60 benzene arsenic 60 organochlorine pesticide 60 chromium VI 60 nitrates phosphates 59 PCBs DDT 59 cyanide arsenic 59 toxins 59 mercury cadmium 59 chemical malachite green 59 PFOS 59 Tetrachloroethylene 59 formaldehyde benzene 59 dioxane 59 barium cadmium 59 TCE PCE 59 polybrominated diphenyl ether PBDE 59 Dioxane 59 arsenic cadmium mercury 59 polychlorinated 59 methyl chloride 59 arsenic cadmium copper 59 #,#,# trichloroethane 59 zinc cadmium 59 chlorinated solvent 59 solvent vapors 59 algal toxins 59 polybrominated diphenyl ethers PBDEs 59 Sodium cyanide 59 Methyl mercury 59 PCB polychlorinated biphenyls 59 aromatic amine 59 persistent bio accumulative 59 chemical perfluorooctanoic acid 59 PCB contamination 59 organotins 59 furans 59 dichloroethene 59 DecaBDE 59 flammable corrosive 58 amphibole asbestos 58 benzo pyrene 58 PBDEs polybrominated diphenyl ethers 58 PCB contaminated sediments 58 orthophosphate 58 carcinogenic dioxins 58 dichloroethylene 58 chromium cadmium 58 nitrogenous compounds 58 Volatile Organic Compounds VOCs 58 methyl chloroform 58 azinphos methyl 58 perfluorochemicals PFCs 58 chlorinated hydrocarbons 58 dioxin PCBs 58 PCBs mercury 58 arsenic 58 Pollutants 58 reproductive toxicants 58 cadmium mercury hexavalent 58 potent carcinogen 58 Contaminated soil 58 nonylphenol 58 degreasing agent 58 flame retardant chemicals 58 toxic pollutants 58 phthalates chemicals 58 carbonless copy paper 58 nonylphenol ethoxylates 58 arsenic cadmium 58 cadmium barium 58 carcinogen dioxin 58 mimics estrogen 58 stachybotrys 58 ammonia nitrogen 58 industrial solvent trichlorethylene 58 dioxins furans 58 endocrine disruptors 58 polychlorinated PCBs 58 carcinogenic polycyclic aromatic hydrocarbons 58 Nitric acid 58 mercury chromium 58 Microcystis 57 unlined landfill 57 potentially carcinogenic 57 PBDEs 57 polycyclic aromatic hydrocarbons 57 sulfur trioxide 57 benzene toluene 57 solvent trichlorethylene 57 Groundwater contamination 57 hexavalent chromium polybrominated biphenyls 57 #,# dichloroethane 57 incinerator ash 57 dioxins PCBs 57 benzopyrene 57 fecal chloroform 57 perfluorocarbons 57 2 butoxyethanol 57 carcinogens mutagens 57 tremolite asbestos 57 vinyl chloride monomer 57 vinyl chloride 57 DEHA 57 radiological contaminants 57 methylene chloride 57 hexachlorobenzene HCB 57 organophosphorus pesticides 57 disinfection byproducts 57 crystalline silica 57 arsenic mercury 57 metal degreasing 57 methyl ethyl ketone 57 TCE vapors 57 aromatic hydrocarbons 57 mirex 57 Carbon tetrachloride 57 polluting groundwater 57 pesticide chlorpyrifos 57 Flame retardants 57 tributyl tin 57 crocidolite 57 allyl alcohol 57 contaminated sediments 57 HAAs 57 methyl tert butyl ether 57 Volatile organic compounds 57 hazardous chemicals 57 quaternary amines 57 decaBDE 57 CFCs chlorofluorocarbons 57 estrogenic chemicals 57 benzene ethylbenzene 57 diazinon 57 radioactive radium 56 organophosphate pesticide 56 PBBs 56 carcinogenic chemical 56 Elemental mercury 56 Perfluorinated chemicals 56 Contaminated groundwater 56 chromic acid 56 arsenic cyanide 56 pollutant 56 Endocrine disruptors 56 bio accumulative 56 estrogenic compounds 56 inorganic salts 56 methyl mercury 56 naturally occurring arsenic 56 Brominated flame retardants 56 endocrine disrupters 56 reproductive toxins 56 carbon disulfide 56 barium chromium 56 sludges 56 Asbestos fibers 56 acid PFOA 56 perchlorethylene PCE 56 mercury 56 ozone particulate matter 56 asbestos fibers 56 perchlorethylene 56 Chlorinated 56 toluene diisocyanate 56 barium chloride 56 TTHMs 56 Sewage sludge 56 toluene benzene 56 pyrene 56 vinclozolin 56 azo dyes 56 bioaccumulation 56 endocrine disruptor 56 DDVP 56 stain repellents 56 mercury vapors 56 ethyl acrylate 56 Carbofuran 56 toxicants 56 arsenic beryllium 56 polybrominated biphenyls 56 phthalate DEHP 56 iron oxides 56 carcinogenic benzene 56 polluted groundwater 56 contaminents 56 PVC phthalates 56 chlorine bleaching 56 tributyltin 56 asbestosis lung cancer 56 chlorine disinfectant 56 #,# Dioxane 56 pesticides aldrin 56 contaminated soil 56 Hydrogen Sulfide H2S 55 fluorotelomers 55 polycyclic aromatic hydrocarbon 55 hazardous substances 55 ozone particulates 55 PBDE 55 chlorobenzene 55 toxic flame retardants 55 Methylmercury 55 cadmium mercury 55 ammonium perfluorooctanoate 55 hydrocarbon vapors 55 TBBPA 55 plutonium americium 55 haloacetic acid 55 household detergents 55 endotoxins 55 Stachybotrys 55 Dechlorane Plus 55 benzenes 55 insecticide chlorpyrifos 55 solvents pesticides 55 chromium polybrominated biphenyl PBB 55 e coli bacteria 55 Chrysotile asbestos 55 contaminated sediment 55 toxic solvents 55 airborne toxins 55 ethoxylates 55 groundwater plume 55 DDT pesticide 55 friable asbestos 55 bacteria Clostridium botulinum 55 solvents 55 unlined landfills 55 aerosol propellants 55 cyclohexane 55 amphibole 55 dichlorobenzene 55 hormone disruptor 55 industrial degreaser 55 brominated flame 55 Residues 55 pesticides chlorpyrifos 55 prenatal exposures 55 penta BDE 55 Hazardous substances 55 aldrin 55 Palos Verdes Shelf 55 eggshell thinning 55 harmful byproducts 55 MBTE 55 Acrolein 55 particulate matter nitrogen oxides 55 hormone disrupting 55 gaseous pollutants 55 endocrine disrupting 55 fecal coliform contamination 55 perfluorinated 55 octa BDE 55 arsenate 55 Ethylene oxide 55 Aflatoxins 55 dioxin 55 soluble salts 55 endocrine disrupting chemical 55 harmful chemicals 55 hormone disrupters 55 coli bacteria 55 vaccine preservative thimerosal 55 dichloroethane 55 nonstick substance 55 inorganic mercury 55 Particulates 55 contaminating groundwater 55 degrease metal parts 55 chromium mercury 55 harmful contaminants 55 unlined ponds 55 VOC Volatile Organic Compounds 55 magnesium hydroxide 55 microbiological organisms 55 #,# butadiene 54 leaching toxins 54 chlorine ammonia 54 Ozone depleting 54 Sulfate 54 paints sealants 54 endocrine disrupter 54 pesticides herbicides fungicides 54 Freshwater mussels 54 insecticide endosulfan 54 asbestos 54 VOCs Volatile Organic Compounds 54 solvent toluene 54 dioxides 54 #,# dichlorobenzene 54 ethylene dichloride EDC 54 carcinogen benzene 54 contaminated soils 54 aluminum phosphide 54 toxin 54 Anabaena 54 microbiological contamination 54 organotin 54 Sulphur dioxide 54 tremolite 54 corrosives 54 cadmium selenium 54 mercury contamination 54 fluorocarbons 54 tailings basin 54 Methylene chloride 54 bioaccumulates 54 pesticide lindane 54 fecal coliform bacteria 54 aquatic toxicity 54 Inert ingredients 54 brominated flame retardant 54 endocrine disruption 54 BPA phthalates 54 listeria monocytogenes bacteria 54 lindane 54 polychlorinated biphenyls PCB 54 toxicant 54 Kepone 54 organophosphate exposure 54 PFOA 54 roxarsone 54 sulfur gases 54 mercury arsenic cadmium 54 colorless odorless radioactive 54 arsenide 54 chloromethane 54 naturally occurring radium 54 elemental mercury 54 synthetic musks 54 chemical #,# butanediol 54 trimethylamine 54 Clostridium botulinum bacterium 54 corrosive flammable 54 Nitrogen oxides 54 reproductive abnormalities 54 phosphorous nitrogen 54 Volatile Organic Compounds 54 hydrogen chloride HCl 54 Volatile Organic Compounds VOC 54 airborne asbestos fibers 54 bromine compounds 54 nitrate nitrogen 54 volatile organic compounds 54 carcinogenic compounds 54 nauseating odors 54 dioxin TCDD 54 ammonium nitrogen 54 tributyltin TBT 54 PAHs 54 Chlorpyrifos 54 mercury selenium 54 chemical perchlorethylene 54 dyes insecticides 54 Polychlorinated Biphenyls PCBs 54 desulfurization gypsum 54 persistent bioaccumulative 54 sulfur oxide SOx 54 mercury DDT PCBs 54 hormone disruptors 54 chromium nickel 54 artificial sweetener saccharin 54 Bayou Verdine 54 spontaneously ignite 54 Halogenated 54 pollutants emitted 54 kiln dust 54 plastics detergents 54 chlorinated flame retardants 53 pavement sealants 53 carcinogens 53 iron sulfide 53 Malachite green 53 wastewater effluent 53 sulfuryl fluoride 53 aluminum dross 53 Domoic acid neurotoxin 53 hydrogen cyanide HCN 53 paradichlorobenzene 53 naturally occurring mineral 53 Nitrates 53 xylenes 53 particulate matter soot 53 flame retardants 53 cited krypton strontium 53 formaldehyde resin 53 hexavalent chromium 53 Lindane 53 particulate contaminants 53 Methyl bromide 53 radioactively contaminated 53 hazardous solvents 53 butter flavorings 53 amalgam dental fillings 53 polycarbonate plastics 53 DDT pesticide banned 53 Cladosporium 53 Polycyclic aromatic hydrocarbons 53 formaldehyde carcinogen 53 fecal coliforms 53 cyanides 53 organophosphate pesticides 53 ethylmercury 53 Nitrate 53 potent neurotoxin 53 acrolein 53 benzene formaldehyde 53 reproductive toxicity 53 organo 53 carcinogen 53 haloacetic acids 53 chemical perfluorooctanoic acid PFOA 53 Sulfates 53 hydrogen chloride 53 pentachlorophenol PCP 53 antimony arsenic 53 dental amalgams 53 plasticisers 53 PAH concentrations 53 cadmium Cd 53 carcinogenic substances 53 hydroxides 53 hazardous waste 53 trihalomethane 53 carcinogenic toxins 53 leachable 53 TTHM 53 soils sediments 53 pesticides 53 transite 53 tetrahydrofuran 53 dechlorinated 53 E. Coli bacteria 53 brominated flame retardants 53 phosphine 53 ozone depleting substance 53 Effluents 53 toxics 53 radioactive thorium 53 plasticizers 53 phosphates nitrates 53 lead mercury cadmium 53 phosphine gas 53 fluorinated chemicals 53 phosphorous 53 Polybrominated diphenyl ethers 53 trivalent chromium 53 chemical C8 53 mercury potent neurotoxin 53 Epoxy resins 53 Sodium hydroxide 53 Hexavalent Chromium 53 Intersex fish 53 pesticides flame retardants 53 ethylene oxide 53 parathion 53 outgas 53 combustion byproducts 53 DBPs 53 halogenated 53 potassium perchlorate 53 estrogen mimicking 53 microcystin 53 polycyclic aromatic hydrocarbons PAHs 53 ammonia 53 asbestos insulation 53 ozone depleting CFCs 53 bacterial decomposition 53 chromium chloride 53 PVC shower curtains 53 nitrogen oxides carbon monoxide 53 maneb 52 oxalates 52 sulfuric acids 52 Hydrochloric 52 leaking septic tanks 52 biodegraded 52 toxic hydrogen sulfide 52 Shiranui Sea 52 harmful vapors 52 gender bending chemicals 52 dental amalgam fillings 52 chlorine byproducts 52 Benzo pyrene 52 Pyrethrins 52 Stachybotrys chartarum 52 PBDE contamination 52 #,#,# tribromoanisole chemical 52 hydrochloric acid HCl 52 disinfection byproducts DBPs 52 #,# dioxane 52 organophosphorous 52 poisonous chemicals 52 mercury chromium cadmium 52 nitrogen oxides NOx emissions 52 resorcinol 52 polyester resins alkyd resins 52 bioaccumulate 52 Nitrogen oxide 52 degreasing solvents 52 gypsum byproduct 52 ethylbenzene 52 ethyl benzene 52 groundwater contamination 52 CFC refrigerants 52 fibrous mineral commonly 52 organic compounds 52 dredged sediment 52 HoltraChem 52 chemical diethylene glycol 52 endocrine disrupting chemicals EDCs 52 chlorine atoms 52 americium 52 Chlorofluorocarbons 52 toxic residues 52 dimethyl sulfide 52 Trihalomethanes 52 hydrocarbons carbon monoxide 52 tertiary butyl ether MTBE 52 Fecal bacteria 52 Enterococcus bacteria 52 enteric bacteria 52 flame retardant additives 52 ammonium salt 52 organophosphate 52 cleaning solvents 52 halogenated compounds 52 perfluorocarbons PFCs 52 sodium sulfide 52 Brominated 52 hexavalent chrome 52 herbicide residues 52 diphenyl ether 52 sulfur dioxide particulates 52 insulating fluids 52 arsenic contaminated 52 chromium contamination 52 organophosphorus 52 benzoates 52 Deca BDE 52 dichloroethene DCE 52 Acrylamide 52 neutralized VX 52 synthetic estrogens 52 elemental sulfur 52 occupationally exposed 52 benzene 52 unlabeled containers 52 volatilize 52 sediment 52 acids solvents 52 toxic vapors 52 toxic waste 52 sulfuric acid mist 52 endocrine disrupting compounds 52 hexavalent 52 chemical bromate 52 perfluorooctane 52 halogenated flame retardants 52 taconite tailings 52 chlorofluorocarbons 52 Nitrosamines 52 chemical vapors 52 sediment dredged 52 Odours 52 hazardous vapors 52 phosphorous fertilizers 52 sulfer 52 bioaerosols 52 Diesel exhaust 52 BTEX chemicals 52 allergens irritants 52 nitrous oxides 52 mercury concentrations 52 organophosphate insecticides 52 carbon monoxide nitrogen dioxide 52 phosphorus 52 ethylene dichloride 52 chloride salts 52 juglone 52 asbestos contaminated vermiculite 52 phthalate plasticizers 52 Dursban 52 methyl parathion 52 nitrates 52 nitrofurans 52 Inorganic arsenic 52 phosphorus pollution 52 stormwater discharges 52 toxic 52 Sediment 52 atmospheric ozone 52 saxitoxin 52 Perchloroethylene 52 E.Coli bacteria 52 inorganic substances 52 toxic gasses 52 wood preservative 52 human carcinogen 52 vinyl lunchboxes 52 Superfund cleanup sites 52 magnesium carbonate 52 particulate matter sulfur dioxide 52 phosphogypsum 52 pentaBDE 52 disinfectant byproducts 52 hydrofluoric acid 52 naphthalene 52 Polluted runoff 52 actinides 51 organic pollutants POPs 51 Contaminant 51 chromium 51 synthetic gypsum 51 methomyl 51 anaerobic decomposition 51 bromate 51 VOC volatile 51 Dichloro Diphenyl Trichloroethane DDT 51 Chloramines 51 Brominated Flame Retardants 51 purines 51 chlorpyrifos 51 chromated copper arsenate 51 cyanazine 51 additive methyl tertiary butyl 51 coal tars 51 dredgings 51 hydrogen sulfide 51 Elevated concentrations 51 Squaw Creek Mine 51 Fecal coliform bacteria 51 Hydrogen sulfide 51 Wissahickon Creek 51 organophosphates 51 radio nuclides 51 elemental phosphorus 51 PFBA 51 amosite 51 particulate matter PM#.# 51 coal tar 51 carbon monoxide nitrogen oxides 51 radium naturally occurring 51 fumigant methyl bromide 51 organochlorine insecticides 51 PFCs 51 phthalates 51 PVC plastics 51 Zonolite insulation 51 dichlorodiphenyltrichloroethane DDT 51 clopyralid 51 allergenic proteins 51 pyrethrins 51 Phosphine 51 pesticide methamidophos 51 pesticide atrazine 51 sediments 51 crystalline silica dust 51 naturally occurring bacterium 51 Sediments 51 atmospheric deposition 51 methyl isobutyl ketone 51 butyl acrylate 51 pesticide contamination 51 Potassium hydroxide 51 organophosphate insecticide 51 dioxin contaminated 51 para dichlorobenzene 51 smog forming compounds 51 insecticides herbicides 51 leaded paint 51 Phthalates 51 airborne particulates 51 butyl acetate 51 brominated flame retardants BFR 51 fluorotelomer 51 atrazine herbicide 51 inorganic compounds 51 tainted vermiculite 51 fumonisins 51 sulfuric acid caustic soda 51 neurotoxin 51 acid sulphate 51 methylamine 51 contamination 51 hydrofluoric acid HF 51 manganese zinc 51 PPCPs 51 lung irritant 51 fragrances dyes 51 formaldehyde preservative 51 unpermitted discharges 51 firefighting foams 51 sulfur oxides nitrogen oxides 51 PVC polyvinyl chloride 51 marine sediments 51 sodium magnesium 51 unlined pits 51 synthetic pyrethroids 51 oversulfated chondroitin sulfate OSCS 51 odorous compounds 51 carbamate insecticides 51 fungi spores 51 sodium hydrochloride 51 ferric chloride 51 furan 51 bacteria listeria monocytogenes 51 benzene toluene ethylbenzene 51 chromium manganese 51 prussic acid 51 inhaled asbestos fibers 51 lead cadmium arsenic 51 chromium arsenic 51 attracting vermin 51 Libby vermiculite 51 Elevated levels 51 nonhazardous waste 51 Pyrethroids 51 Tittabawassee River floodplain 51 sulphates 51 carcinogenic 51 iron manganese 51 rat poisons 51 polycyclic aromatic hydrocarbons PAH 51 carbon disulphide 51 diethyl 51 ammonia NH3 51 leachates 51 BPA bisphenol 51 malachite green 51 barium arsenic 51 Ultrafine particles 51 vermiculite ore 51 biosolid 51 hydrochlorofluorocarbons HCFCs 51 sulfur dioxides 51 oxidized mercury 51 zinc oxide nanoparticles 51 electrical insulators 51 diglycol 51 remote blackwater streams 51 perfluorooctanoate PFOA 51 recyclable plastics 51 neurotoxins 51 Salmonella Listeria 51 ethanolamine 51 perchlorates 51 nonradioactive 51 hatchery raceways 51 phosphogypsum stacks 51 dissolved oxygen DO 51 sulfonate 51 Nitrate contamination 51 dichloromethane 51 probable carcinogen 51 chemical 51 flux residues 51 VOCs 51 powerful neurotoxin 51 Corexit dispersant 51 colorless flammable liquid 51 toxic algae blooms 51 ammonium chloride 51 carbon monoxide sulfur dioxide 51 iron sulphate 51 LLRW 51 hazardous wastes 51 inorganic arsenic 51 Bromate 51 sealants paints 51 carbonyls 51 insulation fireproofing 50 E Coli bacteria 50 anomalous arsenic antimony 50 gallium germanium 50 microbial degradation 50 Methyl Tertiary Butyl Ether 50 Airplanes sprayed 50 herbicide Atrazine 50 Domoic acid 50 stain resistant coatings 50 chlorine bromine 50 solvent perchlorethylene 50 gaseous chlorine 50 dimethyl 50 thirdhand smoke 50 hydrogen sulphide H2S 50 trihalomethanes 50 isoprenoid 50 toxins leaching 50 hydrogen sulfide fumes 50 Air Pollutants 50 sulfolane 50 Teflon cookware 50 aspergillus 50 diisocyanate 50 strontium sulfide 50 Naphthalene 50 insolubles 50 Cyanobacteria 50 n butyl 50 radioactive isotopes chemotherapeutics cytokines 50 phenanthrene 50 cancer causer 50 Methylene Chloride 50 chromated copper arsenate CCA 50 naturally occurring asbestos 50 arsenic contamination 50 halons 50 chlorofluorocarbon 50 polyaromatic hydrocarbons PAHs 50 PAH compounds 50 manganese chromium 50 Vermiculite 50 contaminants leach 50 urea formaldehyde 50 toxicity 50 dibutyl phthalate DBP 50 flammable solvents 50 soot smog 50 fly ash 50 Ethylene glycol 50 synthetic estrogen 50 sulfide nanoparticles 50 Radioactive tritium 50 pesticide aldicarb 50 ethyl mesilate 50 embayments 50 volatilized 50 polybrominated diphenyl ethers PBDE 50 disinfection byproduct 50 chlortetracycline 50 TiO2 nanoparticles 50 Mold spores 50 swallowing radioactive iodine 50 ash ponds 50 oxidized cholesterol 50 phosphorus runoff 50 arsenic bismuth 50 enterococcus bacteria 50 BDEs 50 coal tar sealant 50 chemical ammonium perfluorooctanoate 50 methylparaben 50 harmful substances 50 BSE prions 50 acid sulphate soils 50 waste decomposes 50 Formaldehyde 50 Brackish water 50 resuspend 50 sodium dichromate 50 reproductive toxicant 50 sumithrin 50 Transuranic waste 50 mercury emitted 50 contaminated 50 Microcystis aeruginosa 50 pollutant ozone 50 Parabens 50 solvent TCE 50 Sodium Hydroxide 50 phosphonates 50 domoic acid naturally occurring 50 hazardous waste dump 50 benzyl alcohol 50 Sodium Cyanide 50 probable carcinogens 50 phyto oestrogens 50 aflatoxin B1 50 trace amounts 50 Toxins 50 ethylene dibromide 50 Microscopic particles 50 EtO 50 sodium sulfite 50 polluting waterways