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