2019 Base List for DEQ Priority Toxics*

DEQ and OHA Program Priorities (1) Number of Number of Land Air Consumer Program CASRN Chemical Name Chemical Class/Uses Water Quality Media Quality Quality Products Priorities Combustion By-Products Polycyclic Aromatic Hydrocarbons (PAHs) - as N/A Combustion by-products WQS, CR CU AT 9 (total) 3 group 83-32-9 Acenaphthene Combustion by-products 0 0 208-96-8 Acenaphthylene Combustion by-products 0 0 191-26-4 Anthanthrene Combustion by-products 0 0 120-12-7 Anthracene Combustion by-products P3, SWTM, DWP 3 1 56-55-3 Benz(a)anthracene Combustion by-products P3, HHW 2 2 50-32-8 Benzo(a)pyrene Combustion by-products P3, SWTM, DWP 3 1 205-99-2 Benzo(b)fluoranthene Combustion by-products P3, 1 1 205-12-9 Benzo(c)fluorene Combustion by-products 0 0 192-97-2 Benzo(e)pyrene Combustion by-products 0 0 191-24-2 Benzo(g,h,i)perylene Combustion by-products P3, 1 1 205-82-3 Benzo(j)fluoranthene Combustion by-products 0 0 207-08-9 Benzo(k)fluoranthene Combustion by-products P3, 1 1 189-55-9 Benzo(r,s,t)pentaphene Combustion by-products 0 0 218-01-9 Chrysene [benzo(a)phenanthrene] Combustion by-products P3, SWTM, DWP 3 1 226-36-8 Dibenz(a,h)acridine Combustion by-products 0 0 53-70-3 Dibenz(a,h)anthracene Combustion by-products P3, 1 1 224-42-0 Dibenz(a,j)acridine Combustion by-products 0 0 5385-75-1 Dibenzo(a,e)fluoranthene Combustion by-products 0 0 192-65-4 Dibenzo(a,e)pyrene Combustion by-products 0 0 189-64-0 Dibenzo(a,h)pyrene Combustion by-products 0 0 191-30-0 Dibenzo(a,l)pyrene Combustion by-products 0 0 194-59-2 Dibenzo(c,g)carbazole, 7H- Combustion by-products 0 0 206-44-0 Fluoranthene [Benzo(j,k)fluorene] Combustion by-products P3, DWP, 2 1 86-73-7 Fluorene Combustion by-products 0 0 193-39-5 Indeno(1,2,3-cd)pyrene Combustion by-products P3, 1 1 56-49-5 Methylcholanthrene, 3- Combustion by-products 0 0 3697-24-3 Methylchrysene, 5- Combustion by-products 0 0 832-69-9 Methylphenanthrene, 1- Combustion by-products P3 1 1 2381-21-7 Methylpyrene, 1- Combustion by-products P3 1 1 5522-43-0 Nitropyrene, 1- Combustion by-products 0 0 85-01-8 Phenanthrene Combustion by-products P3, DWP 2 1 129-00-0 Pyrene Combustion by-products SWTM, DWP 2 1 N/A Dioxins and Furans - as group Industrial & Combustion By-Product CR, SWTM CU AT 4 3 Industrial and Combustion By- 1746-01-6 2,3,7,8-TCDD {as total TEQ} P3, WQS 2 1 Product 75-07-0 Acetaldehyde Combustion by-product/VOC CR AT TFKA 3 3 107-02-8 Acrolein Combustion by-product AT 1 1 106-99-0 Butadiene, 1,3- Combustion by-product AT 1 1 106-44-5 Cresol, p- Coal Tar / Combustion By-Product 0 0 Multiple Diesel Particulate Matter (PM) Diesel PM AT 1 1 Multiple Naphthalenes VOC & Combustion by-product CU, HHW AT 3 2 8052-41-3 Petroluem Distillates Petroluem Compounds and VOC HHW 1 1 N/A Total Petroluem Hydrocarbons Petroleum compounds/fuels CR CU 2 2 Consumer Product Constituents N/A Phthalates - as a group Plasticizers CR CU, HHW 3 (total) 2 84-66-2 Diethylphthalate SWTM, DWP TFKA 3 2 117-81-7 Bis (2-ethylhexyl) phthalate WQS, TFKA 2 2 84-61-7 Di-cyclohexyl phthalate [DCHP] P3 1 1 131-11-3 Dimethyl phthalate SWTM 1 1 85-68-7 Butylbenzylphthalate SWTM, DWP 2 1 117-84-0 Di-n-octyl phthalate SWTM 1 1 Per- and Polyfluoroalkyl Substances (PFAS) - as N/A Anti-Stain Coatings CR, SWTM, DWP CU 4 (total) 2 a group 375-85-9 Perfluoroheptanoic acid (PFHpA) Anti-Stain Coatings P3, SWTM, DWP 3 1 375-95-1 Perfluorononanoic acid (PFNA) Anti-Stain Coatings P3, SWTM, DWP 3 1 754-91-6 Perfluorooctane sulfonamide (PFOSA) Anti-Stain Coatings P3, SWTM 2 1 1763-23-1 Perfluorooctane sulfonic acid (PFOS) Anti-Stain Coatings P3, SWTM, DWP TFKA 4 2 335-67-1 Perfluorooctanoic acid (PFOA) Anti-Stain Coatings P3, SWTM, DWP 3 1 456-22-4 4-Fluorobenzoic acid (PFBA) Anti-Stain Coatings DWP 1 1 425670-75-3 6:2 fluorotelomer sulfonate (6:2 FTS) Anti-Stain Coatings DWP 1 1 355-46-4 Perfluorohexanesulfonic acid (PFHxS) Anti-Stain Coatings DWP 1 1 307-24-4 Perfluorohexanoic acid (PFHxA) Anti-Stain Coatings DWP 1 1 376-06-7 Perfluorotetradecanoic acid (PFTeA) Anti-Stain Coatings DWP 1 1 Acetyl hexamethyl tetrahydronaphthalene 21145-77-7 Musks/Cosmetics CR 1 1 (AHTN) 80-05-7 Bisphenol A Plasticizers SWTM, CR HHW 3 2 25013-16-5 Butyl-4-hydroxy anisole, 3-tert (BHA) Food additive CR TFKA 2 2 76-22-2 Camphor Medicinal CR 1 1 7782-50-5 Chlorine Disinfectant WQS 1 1 137-05-3 Cyanoacrylate Adhesives HHW 1 1 540-97-6 Cyclohexasiloxane, dodecamethyl- (D6) Cosmetic ingredient P3 1 1 541-02-6 Cyclopentasiloxane, decamethyl- (D5) Cosmetic ingredient P3 1 1 556-67-2 Cyclotetrasiloxane, octamethyl- (D4) Cosmetic ingredient P3 1 1 134-62-3 Diethyltoluamide, N, N- (DEET) Pesticide SWTM, DWP, CR HHW 4 2 5989-27-5 d-Limonene Solvent CR 1 1 107-21-1 Ethylene glycol Coolant HHW 1 1 1222-05-5 Galaxolide [HHCB] {poly musk} Fragrance P3, CR 2 1 70-30-4 Hexachlorophene Disinfectant P3 1 1 124-76-5 Isoborneol Medicinal CR 1 1 89-78-1 Menthol Medicinal CR 1 1 119-36-8 Methyl salicylate Medicinal CR 1 1 15323-35-0 Musk indane Fragrance P3 1 1 81-14-1 Musk ketone {nitro} Fragrance P3 1 1 145-39-1 Musk tibetene Fragrance P3 1 1 81-15-2 Musk xylene {nitro} Fragrance P3 1 1 104-40-5 Nonyphenol, 4- (& ethoxylates) Detergent/Surfactant CR, SWTM, DWP HHW 4 2 140-66-9 Octylphenol, 4-tert- Detergent Metabolite P3, CR TFKA 3 2 108-95-2 Phenol Disinfectant, Antibacterial CR HHW TFKA 3 3 91-22-5 Quinoline Food additive DWP 1 1 83-45-4 Sitostanol, beta- (Stigmastanol) Food additive P3, CR, DWP 3 1 83-46-5 Sitosterol, beta- Food additive P3, CR, DWP 2 1 92-94-4 Terphenyl, p- Laser Dye, Sunscreen Component P3 1 1 1506-02-1 Tonalide (musk tetraline) Fragrance P3 1 1 3380-34-5 Triclosan Disinfectant P3, CR, SWTM, DWP HHW TFKA 5 3 77-93-0 Triethyl Citrate (ethyl citrate) Food additive CR 1 1 8006-64-2 Turpentine Paint Thinner HHW 1 1 108-05-4 Vinyl acetate Paint ingredient HHW 1 1 Current Use Pesticides 94-75-7 2,4-D Pesticide SWTM, DWP, CR HHW 4 2 1912-24-9 Atrazine Pesticide POI, SWTM, DWP, CR HHW 5 2 63-25-2 Carbaryl Pesticide POI, DWP, CR HHW 4 2 1897-45-6 Chlorothalonil Pesticide P3, DWP, CR HHW 4 2 2921-88-2 Chlorpyrifos Pesticide WQS, POC, P3, DWP, CR HHW 6 2 333-41-5 Diazinon Pesticide POC, P3, SWTM, DWP, CR HHW 6 2 330-54-1 Diuron Pesticide POCI, SWTM, DWP, CR HHW 5 2 1071-83-6 Glyphosate Pesticide POI, SWTM, CR, GW, DWP HHW 6 2 121-75-5 Malathion Pesticide POI, SWTM, DWP, CR HHW 5 2 87-86-5 Pentachlorophenol Wood Preservative WQS, CR, DWP CU, HHW 5 2 52645-53-1 Permethrin Pesticide P3, SWTM, DWP, CR HHW 5 2 1582-09-8 Trifluralin Pesticide P3, DWP, CR HHW 4 2 93-72-1 2,4,5-TP (Silvex) Pesticide 0 0 94-82-6 2,4-DB Pesticide SWTM 1 1 51-36-5 3,5-Dichlorobenzoic acid Pesticide SWTM 1 1 16655-82-6 3-Hydroxycarbofuran Pesticide DWP 1 1 100-02-7 4-Nitrophenol Pesticide 0 0 30560-19-1 Acephate Pesticide HHW 1 1 135410-20-7 Acetamiprid Pesticide SWTM 1 1 34256-82-1 Acetochlor Pesticide DWP 1 1 50594-66-6 Acifluorfen Pesticide 0 0 15972-60-8 Alachlor Pesticide P3, DWP 2 1 116-06-3 Aldicarb Pesticide DWP 1 1 1646-88-4 Aldicarb sulfone Pesticide DWP 1 1 1646-87-3 Aldicarb sulfoxide Pesticide DWP 1 1 584-79-2 Allethrin Pesticide 0 0 2032-59-9 Aminocarb Pesticide SWTM 1 1 1066-51-9 Aminomethylphosphonic acid (AMPA) Pesticide POI, SWTM, CR 3 1 86-50-0 Azinphos-methyl Pesticide WQS, DWP 2 1 131860-33-8 Azoxystrobin Pesticide SWTM 1 1 1861-40-1 Benfluralin Pesticide P3 1 1 25057-89-0 Bentazon Pesticide 0 0 82657-04-3 Bifenthrin Pesticide POC, P3, CR 3 1 188425-85-6 Boscalid Pesticide CR 1 1 56073-10-0 Brodifacoum Pesticide HHW 1 1 314-40-9 Bromacil Pesticide 0 0 23184-66-9 Butachlor Pesticide 0 0 1563-66-2 Carbofuran Pesticide SWTM 1 1 14866-68-3 Chlorate Pesticide, explosives DWP 1 1 6967-29-9 Chloro-2,6-diethylacetanilide, 2- Pesticide 0 0 1570-64-5 Chloro-2-methylphenol, 4- Pesticide 0 0 Chloro-4-isopropylamino-6-amino-s-triazine, 2- 6190-65-4 Pesticide 0 0 {CIAT} 2675-77-6 Chloroneb Pesticide 0 0 101-21-3 Chlorpropham Pesticide 0 0 1702-17-6 Chlorpyralid Pesticide 0 0 21725-46-2 Cyanazine Pesticide 0 0 68359-37-5 Cyfluthrin Pesticide P3, CR 2 1 52315-07-8 Cypermethrin Pesticide P3, CR 2 1 1861-32-1 Dacthal Pesticide DWP, CR 2 1 75-99-0 Dalapon (sodium salt) Pesticide DWP 1 1 1007-28-9 Deisopropylatrazine Pesticide SWTM 1 1 52918-63-5 Deltamethrin (decamethrin) Pesticide P3, CR 2 1 6190-65-4 Desethylatrazine Pesticide SWTM 1 1 96-12-8 Dibromo-3-chloropropane, 1,2- (DBCP) Pesticide DWP 1 1 1918-00-9 Dicamba Pesticide 0 0 1194-65-6 Dichlobenil Pesticide SWTM 1 1 Dichlobenil and 2,6-Dichlorobenzamide 2008-58-4 Pesticide POI, SWTM, CR 3 1 (metabolite) 626-43-7 Dichloroaniline, 3, 5- Pesticide 0 0 95-76-1 Dichloroaniline, 3,4- Pesticide 0 0 95-50-1 Dichlorobenzene o- Pesticide DWP 1 1 120-36-5 Dichloroprop Pesticide 0 0 542-75-6 Dichloropropene Pesticide HHW 1 1 542-75-6 Dichloropropene (1,3-) Pesticide DWP 1 1 62-73-7 Dichlorvos Pesticide CR 1 1 115-32-2 Dicofol Pesticide P3 1 1 141-66-2 Dicrotophos Pesticide 0 0 579-66-8 Diethylaniline, 2,6 Pesticide 0 0 87674-68-8 Dimethenamid-p Pesticide POCI, CR 2 1 60-51-5 Dimethoate Pesticide POI HHW 2 2 85-00-7 Diquat Pesticide DWP 1 1 298-04-4 Disulfoton Pesticide 0 0 959-98-8 Endosulfan I Pesticide SWTM 1 1 33213-65-9 Endosulfan II Pesticide SWTM 1 1 1031-07-8 Endosulfan Sulfate Pesticide P3 1 1 145-73-3 Endothall Pesticide DWP 1 1 66230-04-4 Esfenvalerate Pesticide P3, CR 2 1 55283-68-6 Ethalfluralin Pesticide P3 1 1 563-12-2 Ethion Pesticide 0 0 13194-48-4 Ethoprop (prophos) Pesticide DWP, CR 2 1 24549-06-2 Ethyl-6-methylaniline, 2- Pesticide 0 0 2593-15-9 Etridiazole Pesticide SWTM 1 1 22224-92-6 Fenamiphos Pesticide CR 1 1 13356-08-6 Fenbutatin-oxide Pesticide P3 1 1 39515-41-8 Fenpropathrin Pesticide CR 1 1 51630-58-1 Fenvalerate Pesticide SWTM 1 1 120068-37-3 Fipronil Pesticide P3, CR 2 1 131341-86-1 Fludioxonil Pesticide CR 1 1 98967-40-9 Flumetsulam Pesticide P3 1 1 2164-17-2 Fluometuron Pesticide DWP 1 1 59756-60-4 Fluridone Pesticide SWTM 1 1 944-22-9 Fonofos Pesticide 0 0 319-86-8 Hexachlorocyclohexane, delta- (delta-BHC) Pesticide 0 0 51235-04-2 Hexazionone Pesticide SWTM, DWP, CR 3 1 100728-84-5 Imazamethabenz Pesticide 0 0 81334-34-1 Imazapyr Pesticide DWP, CR 2 1 138261-41-3 Imidacloprid Pesticide POCI, SWTM, DWP, CR 4 1 36734-19-7 Iprodione Pesticide 0 0 465-73-6 Isodrin Pesticide P3 1 1 25311-71-1 Isofenphos Pesticide 0 0 141112-29-0 Isoxaflutole Pesticide 0 0 91465-08-6 lambda-Cyhalothrin Pesticide P3, CR 2 1 330-55-2 Linuron Pesticide P3, DWP, CR 3 1 94-76-6 MCPA Pesticide SWTM 1 1 7085-19-0 MCPP Pesticide SWTM 1 1 150-50-5 Merphos Pesticide 0 0 104206-82-8 Mesotrione Pesticide 0 0 57837-19-1 Metalaxyl Pesticide 0 0 50-00-0 Methaldehyde Pesticide HHW TFKA 2 2 950-37-8 Methidathion Pesticide 0 0 2032-65-7 Methiocarb Pesticide 0 0 16752-77-5 Methomyl Pesticide 0 0 74-83-9 Methyl Bromide Pesticide DWP HHW 2 2 51218-45-2 Metolachlor Pesticide SWTM, POI, DWP, CR 4 1 21087-64-9 Metribuzin Pesticide CR 1 1 74223-64-6 Metsulfuron-Methyl Pesticide POI 1 1 113-48-4 MGK 264 Pesticide SWTM 1 1 2212-67-1 Molinate Pesticide 0 0 2163-80-6 Monosodium Acid Methanearsonate (MSMA) Pesticide 0 0 88671-89-0 Myclobutanil Pesticide P3, CR 2 1 90-15-3 Naphthol, 1- Pesticide 0 0 15299-99-7 Napropamide Pesticide DWP 1 1 27314-13-2 Norflurazon Pesticide 0 0 23135-22-0 Oxamyl Pesticide 0 0 42874-03-3 Oxyfluorfen Pesticide P3, CR, POC 3 1 950-35-6 Paraoxon-methyl Pesticide 0 0 4685-14-7 Paraquat Pesticide HHW 1 1 298-00-0 Parathion-methyl Pesticide 0 0 40487-42-1 Pendamethalin Pesticide P3, DWP, CR 3 1 608-93-5 Pentachlorobenzene Fungicide Precursor P3 TFKA 2 2 298-02-2 Phorate Pesticide 0 0 7786-34-7 Phosdrin (Mevinphos) Pesticide 0 0 732-11-6 Phosmet (Imidan) Pesticide 0 0 1918-02-1 Picloram Pesticide DWP 1 1 67747-09-5 Prochloraz Cereal Fungicide P3 1 1 1610-18-0 Prometon Pesticide 0 1 7287-19-6 Prometryn Pesticide 0 0 23950-58-5 Pronamide Pesticide SWTM 1 1 1918-16-7 Propachlor Pesticide 0 0 709-98-8 Propanil Pesticide 0 0 2312-35-8 Propargite Pesticide P3 1 1 139-40-2 Propazine Pesticide 0 0 139-40-2 Propazine Pesticide SWTM 1 1 60207-90-1 Propiconazole Pesticide POI, DWP, CR 3 1 114-26-1 Propoxur (Baygon) Pesticide DWP HHW 2 2 23950-58-5 Propyzamide Pesticide 0 0 175013-18-0 Pyraclostrobin Pesticide DWP, CR 2 1 129630-19-9 Pyraflufen ethyl Pesticide SWTM 1 1 95737-68-1 Pyriproxyfen Pesticide SWTM 1 1 10453-86-8 Resmethrin Pesticide CR 1 1 83-79-4 Rotenone Pesticide HHW 1 1 759-94-4 S-ethyl dipropylthiocarbamate (EPTC) Pesticide CR 1 1 122-34-9 Simazine Pesticide POI, SWTM, CR, DWP 4 1 62-74-8 Sodium Fluoroacetate Pesticide CR 1 1 74222-97-2 Sulfometuron-methyl Pesticide POI, CR 2 1 26002-80-2 Sumithrin (Phenothrin) Pesticide CR 2 2 107534-96-3 Tebuconazole Pesticide CR 1 1 34014-18-1 Tebuthiuron Pesticide 0 0 79538-32-2 Tefluthrin Pesticide CR 1 1 5902-51-2 Terbacil Pesticide POI 1 1 13071-79-9 Terbufos Pesticide 0 0 5915-41-3 Terbuthylazine Pesticide 0 0 7696-12-0 Tetramethrin Pesticide CR 1 1 153719-23-4 Thiamethoxam Pesticide 0 0 28249-77-6 Thiobencarb Pesticide 0 0 8001-35-2 Toxaphene Pesticide 0 0 87820-88-0 Tralkoxydim Pesticide 0 0 43121-43-3 Triadimefon Pesticide P3 1 1 2303-17-5 Triallate Pesticide 0 0 78-48-8 Tribufos Pesticide 0 0 55335-06-3 Triclopyr Pesticide SWTM, DWP, CR 3 1 41814-78-2 Tricyclazole Pesticide SWTM 1 1 141517-21-7 Trifloxystrobin Pesticide SWTM 1 1 Flame Retardants Polybrominated Diphenyl Ethers (PBDEs) - as a N/A Flame Retardant CR, DWP, SWTM CU 4 (total) 2 group PBDE-047 [2,2',4,4'-Tetrabromodiphenyl 5436-43-1 Flame Retardant P3 1 1 ether] PBDE-099 [2,2’,4,4’,5-Pentabromodiphenyl 60348-60-9 Flame Retardant P3 1 1 ether] PBDE-100 [2,2’,4,4’,6-Pentabromodiphenyl 189084-64-8 Flame Retardant P3 1 1 ether] PBDE-153 [2,2',4,4',5,5'-hexabromodiphenyl 68631-49-2 Flame Retardant P3, 1 1 ether] 1163-19-5 PBDE-209 [decabromodiphenyl ether] Flame Retardant P3, DWP TFKA 3 2 PBDE-138 [2,2’,3,4,4’,5’-Hexabromodiphenyl 36483-60-0 Flame Retardant 0 0 ether] PBDE-154 [2,2’,4,4’,5,6’-Hexabromodiphenyl 36483-60-0 Flame Retardant 0 0 ether] PBDE-185 [2,2',3,4,4',5',6- 68928-80-3 Flame Retardant 0 0 Heptabromodiphenyl ether] 40088-47-9 PBDE-66 [2,3’,4,4’-Tetrabromodiphenyl ether] Flame Retardant 0 0 32536-52-0 Octabromodiphenyl ether Flame Retardant HHW 1 1 PBDE-85 [2,2,3,4,4-Pentabromodiphenyl 32534-81-9 Flame Retardant 0 0 ether] 74-97-5 Bromochloromethane Flame Retardant/Solvent DWP 1 1 101-55-3 Bromophenyl phenyl ether,4- Flame Retardant 0 0 26040-51-7 Di-(2-ethyl)tetrabromophthalate [TBPH] Flame Retardant P3 1 1 25637-99-4 Hexabromocyclodecane (HBCD) Flame Retardant P3 TFKA 2 2 59080-40-9 PBB-153 [2,2',4,4',5,5'-Hexabromobiphenyl] Flame Retardant P3 1 1 79-94-7 Tetrabromobisphenol A (TBBPA) Flame Retardant P3 TFKA 2 2 115-86-6 Triphenyl phosphate Flame Retardant/Plasticizer CR TFKA 2 2 115-96-8 Tris (2-chloroethyl) Phosphate (TCEP) Flame Retardant SWTM, DWP, CR TFKA 4 2 13674-87-8 Tris (dichloroisopropyl) phosphate (TDCP) Flame Retardant SWTM, DWP TFKA 3 2 78-51-3 Tris(2-butoxyethyl)phosphate Flame Retardant CR 1 1 Hormones 65-05-08 Androsten-3,17-dione, 4- Hormone CR 1 1 53-41-8 Androsterone, cis- Hormone CR 1 1 56-53-1 Diethylstilbestrol Synthetic nonsteroidal estrogen P3 1 1 481-30-1 Epitestosterone Hormone CR 1 1 517-09-9 Equilenin Hormone CR 1 1 474-86-2 Equilin Hormone CR 1 1 57-91-0 Estradiol, 17-alpha- Hormone CR 1 1 50-28-2 Estradiol, 17-beta- Hormone SWTM, CRT 2 1 50-27-1 Estriol Hormone SWTM 1 1 53-16-7 Estrone Hormone SWTM, DWP 2 1 57-63-6 Ethynylestradiol, 17a- Hormone P3, CR, SWTM HHW 4 2 53187-98-7 Ketotestosterone, 11- Hormone CR 1 1 72-33-3 Mestranol Hormone CR 1 1 68-22-4 Norethindrone Hormone CR 1 1 57-83-0 Progesterone Hormone CR 1 1 521-18-6 Stanolone Hormone CR 1 1 58-22-0 Testosterone Hormone CR 1 1 Industrial Chemicals or Intermediates Electrical equipment N/A Polychlorinated Biphenyls (PCBs) WQS, CR, SWTM, DWP CU, HHW 6 (total) 2 coolants/insulators Electrical equipment 7012-37-5 PCB-028 [2,4,4'-trichlorobiphenyl] P3, SWTM 2 1 coolants/insulators Electrical equipment 35693-99-3 PCB-052 [2,2',5,5'-tetrachlorobiphenyl] P3, SWTM 2 1 coolants/insulators Electrical equipment 32598-13-3 PCB-077 [3,3',4,4'-tetrachlorobiphenyl] P3, SWTM 2 1 coolants/insulators Electrical equipment 37680-73-2 PCB-101 [2,2',4,5,5'-pentachlorobiphenyl] P3, SWTM 2 1 coolants/insulators Electrical equipment 32598-14-4 PCB-105 [2,3,3',4,4'-pentachlorobiphenyl] P3, SWTM 2 1 coolants/insulators Electrical equipment 31508-00-6 PCB-118 [2,3',4,4',5-pentachlorobiphenyl] P3, SWTM 2 1 coolants/insulators Electrical equipment 57465-28-8 PCB-126 [3,3',4,4',5-pentachlorobiphenyl] P3, SWTM 2 1 coolants/insulators Electrical equipment 35065-28-2 PCB-138 [2,2',3,4,4',5'-hexachlorobiphenyl] P3, SWTM 2 1 coolants/insulators Electrical equipment 35065-27-1 PCB-153 [2,2',4,4',5,5'-hexachlorobiphenyl] P3, SWTM 2 1 coolants/insulators Electrical equipment 35065-29-3 PCB-180 [2,2',3,4,4',5,5'-heptachlorobiphenyl] P3, SWTM 2 1 coolants/insulators Electrical equipment 37680-65-2 PCB 18 [2,2',5-trichlorobiphenyl] SWTM 1 1 coolants/insulators Electrical equipment 70362-50-4 PCB-081 (3,4,4',5-tetrachlorobiphenyl) P3 1 1 coolants/insulators Electrical equipment 74472-37-0 PCB-114 [2,3,4,4',5-pentachlorobiphenyl] P3 1 1 coolants/insulators Electrical equipment 65510-44-3 PCB-123 [2',3,4,4',5-pentachlorobiphenyl] P3 1 1 coolants/insulators Electrical equipment 38380-07-3 PCB-128 [2,2',3,3',4,4'-hexachlorobiphenyl] SWTM 1 1 coolants/insulators Electrical equipment 38380-08-4 PCB-156 [2,3,3',4,4',5-hexachlorobiphenyl] P3 1 1 coolants/insulators Electrical equipment 69782-90-7 PCB-157 [2,3,3',4,4',5'-hexachlorobiphenyl] P3 1 1 coolants/insulators Electrical equipment 52663-72-6 PCB-167 [2,3',4,4',5,5'-hexachlorobiphenyl] P3 1 1 coolants/insulators Electrical equipment 32774-16-6 PCB-169 [3,3',4,4',5,5'-hexachlorobiphenyl] P3 1 1 coolants/insulators Electrical equipment 35065-30-6 PCB-170 [2,2',3,3',4,4',5-heptachlorobiphenyl] SWTM 1 1 coolants/insulators Electrical equipment 52663-68-0 PCB-187 [2,2',3,4',5,5',6-heptachlorobiphenyl] SWTM 1 1 coolants/insulators Electrical equipment 39635-31-9 PCB-189 [2,3,3',4,4',5,5'-heptachlorobiphenyl] P3 1 1 coolants/insulators Electrical equipment 52663-78-2 PCB-195 [2,2',3,3',4,4',5,6-octachlorobiphenyl] SWTM 1 1 coolants/insulators PCB-206 [2,2',3,3',4,4',5,5',6- Electrical equipment 40186-72-9 SWTM 1 1 nonachlorobiphenyl] coolants/insulators PCB-209 [2,2'3,3',4,4',5,5',6,6 '- Electrical equipment 2051-24-3 SWTM 1 1 decachlorobiphenyl] coolants/insulators Electrical equipment 41464-39-5 PCB-44 [2,2',3,5'-tetrachlorobiphenyl] SWTM 1 1 coolants/insulators Electrical equipment 32598-10-0 PCB-66 [2,3',4,4'-tetrachlorobiphenyl] SWTM 1 1 coolants/insulators Electrical equipment 34883-43-7 PCB-8 [2,4'-dichlorobiphenyl] SWTM 1 1 coolants/insulators Industrial intermediate 98-86-2 Acetophenone CR 1 1 (Dyes/Resins) 7664-41-7 Ammonia Fertilizer/Intermediate for Dyes WQS HHW TFKA 3 3 84-65-1 Anthraquinone Dyes/Pigments CR 1 1 1332-21-4 Asbestos Insulating Material HHW 1 1 119-61-9 Benzophenone Inks/Coatings CR 1 1 98-07-7 Benzotrichloride (trichloromethylbenzene) Industrial Intermediate P3 1 1 108-86-1 Bromobenzene Industrial Solvent/Intermediate DWP 1 1 86-74-8 Carbazole Industrial Intermediate CR 1 1 Industrial Solvent/Intermediate 75-15-0 Carbon Disulfide DWP 1 1 (former soil fumigant) 10049-04-4 Chlorine Dioxide Oxidizing Agent AT 1 1 75-00-3 Chloroethane (Ethyl chloride) Industrial Solvent/Intermediate DWP 1 1 74-87-3 Chloromethane Industrial Solvent/Intermediate DWP 1 1 599-64-4 Cumylphenol, 4- Industrial Intermediate CR 1 1 103-23-1 Di(2-ethylhexyl)adipate Plasticizers DWP 1 1 Industrial Solvent/Intermediate 107-06-2 Dichloroethane (1,2-) DWP 1 1 (former textile/agricultural fumigant) 75-34-3 1,1-Dichloroethane (Ethylidene dichloride) Industrial Solvent/Intermediate DWP 1 1 102-36-3 Dichlorophenyl isocyanate, 3,4- Industrial Intermediate CR 1 1 84-61-7 Di-cyclohexyl phthalate (DCP) Plasticizers P3 1 1 112-34-5 Diethylene glycol monobutly ether Industrial solvent/intermediate AT 1 1 128-39-2 Di-tert-butylphenol, 2,6- UV Stabilizer, Fuel Antioxidizer P3 1 1 32241-08-0 Heptachloronaphthalene Insulation, Preservative, Dyes P3 1 1 87-68-3 Hexachlorobutadiene Industrial Solvent/Intermediate TFKA 1 1 67-72-1 Hexachloroethane Industrial Chemical 0 0 1335-87-1 Hexachloronaphthalene Insulation, Preservative, Dyes P3 1 1 7664-39-3 Hydrofluoric acid Cleaning Agent HHW 1 1 7664-39-3 Hydrogen Fluoride Industrial Intermediate AT 1 1 7783-06-4 Hydrogen Sulfide Industrial Intermediate AT 1 1 120-72-9 Indole Coal Tar Constituent CR 1 1 78-59-1 Isophorone Industrial Intermediate/Solvent CR 1 1 98-82-8 Isopropylbenzene Industrial Intermediate/Fuels CR 1 1 119-65-3 Isoquinoline Industrial Intermediate CR 1 1 136-85-6 Methyl-1H-benzotriazole, 5- De-icer CR 1 1 74-95-3 Methylene bromide (dibromomethane) Solvent DWP 1 1 101-68-8 Methylene diphenyl diisocyanate Polyurethane foam intermediate AT 1 1 Fertilizer, animal and human 14797-55-8 Nitrate DWP 1 1 wastes, natural 62-75-9 N-Nitrosodimethylamine Nitrosamines/ethers/alcohols DWP 1 1 29082-74-4 Octachlorostyrene Industrial Process By-Product P3 1 1 Pentachloroanisole (2,3,4,5,6- 1825-21-4 Wood Preservative P3 1 1 Pentachloroanisole) 1321-64-8 Pentachloronaphthalene Insulation, Preservative, Dyes P3 1 1 1310-73-2 Sodium hydroxide Industrial Cleaner HHW AT 2 2 7440-24-6 Strontium Dyes/Pigments, Metals Hardner DWP 1 1 7664-93-9 Sulfuric Acid Industrial Intermediate HHW AT 2 2 1335-88-2 Tetrachloronaphthalene Insulation, Preservative, Dyes P3 1 1 126-73-8 Tributyl phosphate Industrial Intermediate/Plasticizer CR 1 1 1321-65-9 Trichloronaphthalene Insulation, Preservative, Dyes P3 1 1 732-26-3 Tris-(1,1-dimethylethyl)phenol, 2,4,6- [Alkofen B] Polymer stabilizer P3 1 1 Chemical Intermediate (PVC 75-01-4 Vinyl Chloride (Chloroethene ) DWP CU, HHW TFKA 4 3 products) Legacy Pesticides 309-00-2 Aldrin Legacy Pesticide WQS, SWTM, CR CU 4 2 60-57-1 Dieldrin Legacy Pesticide WQS, SWTM, DWP, CR CU 5 2 57-74-9 Chlordane (and metabolites - as a group) Legacy Pesticide WQS, CR CU 3 (total) 2 57-74-9 alpha-Chlordane Legacy Pesticide SWTM 1 1 5103-71-9 Chlordane, cis- Legacy Pesticide P3 1 1 5103-74-2 Chlordane, trans- Legacy Pesticide P3 1 1 5103-73-1 Cis-Nonachlor Legacy Pesticide SWTM, P3 2 1 27304-13-8 Oxychlordane Legacy Pesticide SWTM 1 1 39765-80-5 Trans-Nonachlor Legacy Pesticide SWTM, P3 2 1 143-50-0 Chlordecone (Kepone) Legacy Pesticide P3 1 1 50-29-3 DDT (and metabolites - as a group) Legacy Pesticide WQS, CR CU, HHW 4 (total) 2 72-54-8 4,4'-DDD Legacy Pesticide P3, SWTM 2 1 72-55-9 4,4'-DDE Legacy Pesticide SWTM 1 1 50-29-3 4,4'-DDT Legacy Pesticide SWTM 1 1 3424-82-6 2,4'-DDE Legacy Pesticide SWTM 1 1 789-02-6 2,4'-DDT Legacy Pesticide SWTM 1 1 53-19-0 2,4'-DDD Legacy Pesticide SWTM 1 1 88-85-7 Dinoseb Legacy Pesticide P3 1 1 72-20-8 Endrin Legacy Pesticide P3, CR 2 1 53494-70-5 Endrin ketone Legacy Pesticide SWTM 1 1 106-93-4 Ethylene dibromide (EDB) Legacy Pesticide DWP 1 1 76-44-8 (& Heptachlor (and Heptachlor epoxide) Legacy Pesticide WQS, P3, CR 3 1 1024-57-3) 118-74-1 Hexachlorobenzene Legacy Pesticide P3, CR, DWP TFKA 4 2 CU (all HCH Hexachlorocyclohexane (HCH), gamma- 58-89-9 Pesticide P3, DWP isomers), 4 2 (Lindane) HHW CU (all HCH 319-84-6 Hexachlorocyclohexane, alpha- (alpha-BHC) Legacy Pesticide P3, WQS, CR 4 2 isomers) CU (all HCH 319-85-7 Hexachlorocyclohexane, beta- (beta-BHC) Legacy Pesticide P3, CR 3 2 isomers) 72-43-5 Methoxychlor Legacy Pesticide CR HHW 2 2 2385-85-5 Mirex Legacy Pesticide P3 1 1 82-68-8 Pentachloronitrobenzene Legacy Pesticide P3 1 1 143-33-9 Sodium Cyanide Legacy Pesticide, Mining CR HHW 3 2 95-95-4 Trichlorophenol, 2,4,5- (2,4,5-T) Legacy Pesticide P3 1 1 88-06-2 Trichlorophenol, 2,4,6- Legacy Pesticide P3 1 1 Metals 7429-90-5 Aluminum Metals 0 0 7440-36-0 Antimony Metals SWTM, DWP 2 1 7440-39-3 Barium Metals SWTM, DWP 2 1 74-90-8 Cyanide, Hydrogen Inorganic Compound DWP 1 1 7681-49-4 Fluoride Metal DWP 1 1 7439-98-7 Molybdenum metals DWP 1 1 Fertilizer, animal and human 14797-65-0 Nitrite (as N) DWP 1 1 wastes, natural 7440-28-0 Thallium Inorganic Compound DWP 1 1 7440-38-2 Arsenic Metals P3, WQS, SWTM, DWP, CR CU, HHW AT TFKA 9 4 7440-41-7 Beryllium Metals WQS, SWTM, DWP AT 4 2 56-35-9 Bis (tributyltin) Oxide (including TBT metabolites) Pesticide P3 CU AT 3 3 7440-42-8 Boron Metals 0 0 7440-43-9 Cadmium Metals P3, WQS, SWTM, CR, DWP CU, HHW AT TFKA 9 4 18450-29-9 Chromium Metals DWP, WQS, SWTM, CR CU, HHW AT 7 3 7440-48-4 Cobalt Metals SWTM, CR HHW TFKA 4 3 7440-50-8 Copper Metals WQS, POI, SWTM, DWP, CR CU, HHW 7 2 7440-56-4 Germanium Metals DWP 1 1 7439-92-1 Lead Metals P3, SWTM, CR CU, HHW AT 6 3 7439-96-5 Manganese Metals WQS, SWTM, DWP AT 4 2 7439-97-6 Mercury (and methylmercury) Metals WQS, CR, P3, SWTM, DWP CU, HHW AT TFKA 9 4 7440-02-0 Nickel Metals WQS, SWTM, CR, DWP HHW AT 5 2 7782-49-2 Selenium Metals P3, SWTM, CR, DWP 4 1 7440-22-4 Silver Metals WQS, CR HHW 3 2 1408-79-8 Suflate Metals SWTM 1 1 7440-62-2 Vanadium (fume or dust) Metals DWP AT 1 1 7440-66-6 Zinc Metals WQS, CR CU 3 2 Pharmaceuticals or Wastewater Indicators 103-90-2 Acetaminophen Pharmaceutical CR 1 1 18559-94-9 Albuterol (Salbutamol) Pharmaceutical CR 1 1 58-08-2 Caffeine Stimulant CR, DWP 2 1 298-46-4 Carbamazepine Pharmaceutical SWTM, DWP, CR 3 1 57-88-5 Cholesterol Fecal indicator P3, CR, SWTM, DWP 4 1 76-57-3 Codeine Pharmaceutical CR 1 1 360-68-9 Coprostanol Fecal indicator P3, CR, SWTM, DWP 4 1 486-56-6 Cotinine Pharmaceutical SWTM, CR 2 1 67035-22-7 Dehydronifedipine Pharmaceutical CR 1 1 42399-41-7 Diltiazem Pharmaceutical CR 1 1 611-59-6 Dimethylxanthine, 1,7- (p-Xanthine) Pharmaceutical CR 1 1 147-24-0 Diphenhydramine Pharmaceutical CR, DWP 2 1 83-34-1 Methyl-1(H)-indole, 3-(Skatole) Fecal indicator CR 1 1 2062-78-4 Pimozide Antipsychotic Drug P3 1 1 80214-83-1 Roxithromycin Antibiotic P3 1 1 723-46-6 Sulfamethoxazole Pharmaceutical SWTM, CR, DWP 3 1 148-79-8 Thiabendazole Pharmaceutical CR 1 1 738-70-5 Trimethoprim Pharmaceutical CR 1 1 93413-44-6 Venlafaxine Pharmaceutical SWTM, DWP 2 1 81-81-2 Warfarin Pharmaceutical CR 1 1 Volatile Organic Compounds 67-64-1 Acetone VOC HHW 1 1 71-43-2 Benzene VOC & Combustion by-product SWTM, DWP CU, HHW AT TFKA 6 4 106-46-7 Dichlorobenzene, 1,4- (Dichlorobenzene-p) VOC DWP HHW AT 3 2 75-35-4 Dichloroethylene (1,1-) VOC DWP 1 1 156-59-2 Dichloroethylene (cis-1,2-) VOC DWP 1 1 156-60-5 Dichloroethylene (trans-1,2-) VOC DWP 1 1 Multiple Dichloroethylenes VOC WQS 1 1 75-09-2 Dichloromethane (Methylene Chloride) VOC DWP AT 1 1 78-87-5 Dichloropropane (1,2-) VOC DWP 1 1 123-91-1 Dioxane p- (1,4-Dioxane) Solvent stabilizer DWP CU 1 1 100-41-4 Ethylbenzene VOC SWTM, DWP CU AT TFKA 5 4 Preservative, combustion by- 50-00-0 Formaldehyde CR HHW AT 3 3 product 77-47-4 Hexachlorocyclopentadiene Industrial intermediate DWP 1 1 110-54-3 Hexane VOC HHW 1 1 67-56-1 Methanol VOC HHW 1 1 78-93-3 Methyl Ethyl Ketone (MEK) VOC HHW TFKA 2 2 108-10-1 Methyl isobutyl ketone (MIBK, Hexone) Solvent/VOC DWP 1 1 108-90-7 Monochlorobenzene VOC DWP 1 1 91-20-3 Naphthalene Industrial intermediate DWP 1 1 98-95-3 Nitrobenzene VOC HHW 1 1 100-42-5 Styrene VOC DWP HHW TFKA 3 3 95-94-3 Tetrachlorobenzene, 1,2,4,5- VOC 0 0 127-18-4 Tetrachloroethylene VOC WQS, SWTM, DWP, CR CU, HHW AT 7 3 56-23-5 Tetrachloromethane (Carbon Tetrachloride) VOC DWP HHW 2 2 108-88-3 Toluene (methylbenzene) VOC SWTM, DWP CU, HHW TFKA 5 3 120-82-1 Trichlorobenzene, 1,2,4- VOC DWP 1 1 71-55-6 Trichloroethane (1,1,1-) VOC DWP 1 1 79-00-5 Trichloroethane (1,1,2-) VOC DWP 1 1 79-01-6 Trichloroethylene VOC WQS, SWTM, DWP CU, HHW AT 6 3 96-18-4 Trichloropropane Industrial intermediate DWP 1 1 1330-20-7 Xylenes (dimethylbenzene, all isomers) VOC DWP CU, HHW 3 2

* Red text indicates additions to 2012 Base List chemicals and descriptions. Strikethroughs indicate deletions of chemicals and list descriptions. Yellow highlighted chemicals are ones that meet Focus List criteria.

(1) DEQ WATER, AIR, LAND PROGRAM PRIORITIES

Water Quality Program Priority Lists P3 = Chemical on the Interim Final List of Persistent Pollutants developed by DEQ in response to Senate Bill 737 (2007 Legislative Session) WQS = Toxic pollutant on DEQ's list of impaired waters for surface water body(s) in Oregon [303(d) List], or identified in the 2004/2006 Water Quality Assessment Report as "pollutant of concern" CR = Columbia River Basin Toxics Reduction Plan toxics monitoring and reduction priority list, revised in early 2020 POC = Designated as a Pesticide of Concern by the Oregon Inter-Agency Water Quality Pesticide Management Team. POCs become subject to agency management actions, and are the highest statewiede water quality priorities POI = Designated as a Pesticide of Interest by the Oregon Inter-Agency Water Quality Pesticide Management Team. POIs are evaluated for possible future designation as a Pesticide of Concern, and are moderate statewide water quality priorities SWTM = Statewide Surface Water Toxics Monitoring Program Target Analyte and Assessment List DSP = DEQ Source Drinking Water Monitoring and Reduction Contaminant Priority List, including contaminants with Maximum Contaminant Levels (MCLs) and Health Advisory Levels (HALs) that have been detected in Oregon waters

Land Quality Program Priority Lists CU = Toxic chemical, or group of chemicals, recognized by the DEQ Cleanup Program as a risk driver for cleanup and assessment actions in the state HHW = Toxic Substance on ranked in the top by the Household Hazardous Waste Program Prioritization Tool

Air Quality Program Priority Lists AT = A list of chemicals identified by the DEQ Air Quality Program as priority air toxic pollutants based on monitoring and modeling data, including DEQ Air Quality non-point, mobile and Cleaner Air Oregon Program emissions inventory data on pollutants with numeric Risk Based Concentrations

(2) Consumer and Commercial Product Priority Lists TFKA = 68 Chemicals of High Concern for Children's Health designated as part of the Oregon Health Authority's Toxics-Free Kids Act (TFKA) Program and contained in products