Substance list by threshold

The substance list below is sorted by NPRI Threshold Category. To sort the list by other criteria, such as by name, please download the Excel format (76 KB) of the current substance list. To search for a particular substance or CAS Registry Number on this page, press crtl+f.

General Notes:

Abbreviations:

MPO = Manufactured, Processed or Otherwise used

PAHs = Polycyclic aromatic hydrocarbons

VOCs = Volatile Organic Compounds

The Chemical Abstracts Service (CAS) Registry Number (CAS RN) is the property of the American Chemical Society and any use or redistribution, except as required in supporting regulatory requirements and/or for reports to the Government when the information and the reports are required by law or administrative policy, is not permitted without the prior, written permission of the American Chemical Society.

* Other Substance Identifiers (i.e., NA - ##) are used where no single CAS RN applies to a substance.

2016-2017 NPRI Substance List

Prefix Name CAS #or Other Substance Identifier* Part # (Threshold Category) Threshold** Group
  Acetaldehyde 75-07-0 1A 10 tonnes MPO VOC
  Acetonitrile 75-05-8 1A 10 tonnes MPO VOC
  Acetophenone 98-86-2 1A 10 tonnes MPO VOC
  Acrolein 107-02-8 1A 10 tonnes MPO VOC
  Acrylamide 79-06-1 1A 10 tonnes MPO VOC
  Acrylic acid (and its salts)1 79-10-7 1A 10 tonnes MPO VOC
  Alkanes, C10-13, chloro 85535-84-8 1A 10 tonnes MPO  
  Alkanes, C6-18, chloro 68920-70-7 1A 10 tonnes MPO  
  Allyl alcohol 107-18-6 1A 10 tonnes MPO VOC
  Aluminum (fume or dust only) 7429-90-5 1A 10 tonnes MPO  
  Aluminum oxide (fibrous forms only) 1344-28-1 1A 10 tonnes MPO  
  Ammonia (total)2 NA - 16 1A 10 tonnes MPO  
  Aniline (and its salts)1 62-53-3 1A 10 tonnes MPO VOC
  Anthracene 120-12-7 1A 10 tonnes MPO VOC, PAH
  Antimony (and its compounds)3 NA - 01 1A 10 tonnes MPO  
  Asbestos (friable form only) 1332-21-4 1A 10 tonnes MPO  
  Benzene 71-43-2 1A 10 tonnes MPO VOC
  Benzoyl chloride 98-88-4 1A 10 tonnes MPO  
  Benzoyl peroxide 94-36-0 1A 10 tonnes MPO  
  Benzyl chloride 100-44-7 1A 10 tonnes MPO VOC
  Biphenyl 92-52-4 1A 10 tonnes MPO VOC
  Bis (2-ethylhexyl) adipate 103-23-1 1A 10 tonnes MPO  
  Bis (2-ethylhexyl) phthalate 117-81-7 1A 10 tonnes MPO  
  Boron trifluoride 7637-07-2 1A 10 tonnes MPO  
  Bromine 7726-95-6 1A 10 tonnes MPO  
  Bromomethane 74-83-9 1A 10 tonnes MPO VOC
1,3- Butadiene 106-99-0 1A 10 tonnes MPO VOC
2- Butoxyethanol 111-76-2 1A 10 tonnes MPO VOC
  Butyl acrylate 141-32-2 1A 10 tonnes MPO VOC
sec- Butyl alcohol 78-92-2 1A 10 tonnes MPO VOC
i- Butyl alcohol 78-83-1 1A 10 tonnes MPO VOC
n- Butyl alcohol 71-36-3 1A 10 tonnes MPO VOC
tert- Butyl alcohol 75-65-0 1A 10 tonnes MPO VOC
  Butyl benzyl phthalate 85-68-7 1A 10 tonnes MPO VOC
1,2- Butylene oxide 106-88-7 1A 10 tonnes MPO VOC
  Butyraldehyde 123-72-8 1A 10 tonnes MPO VOC
  C.I. Basic Green 4 569-64-2 1A 10 tonnes MPO  
  C.I. Disperse Yellow 3 2832-40-8 1A 10 tonnes MPO  
  C.I. Solvent Yellow 14 842-07-9 1A 10 tonnes MPO  
  Calcium fluoride 7789-75-5 1A 10 tonnes MPO  
  Carbon disulphide 75-15-0 1A 10 tonnes MPO VOC
  Carbon tetrachloride 56-23-5 1A 10 tonnes MPO VOC
  Carbonyl sulphide 463-58-1 1A 10 tonnes MPO  
  Catechol 120-80-9 1A 10 tonnes MPO  
  CFC-11 75-69-4 1A 10 tonnes MPO  
  CFC-114 76-14-2 1A 10 tonnes MPO  
  CFC-115 76-15-3 1A 10 tonnes MPO  
  CFC-12 75-71-8 1A 10 tonnes MPO  
  CFC-13 75-72-9 1A 10 tonnes MPO VOC
  Chlorine 7782-50-5 1A 10 tonnes MPO  
  Chlorine dioxide 10049-04-4 1A 10 tonnes MPO  
  Chloroacetic acid (and its salts)1 79-11-8 1A 10 tonnes MPO  
  Chlorobenzene 108-90-7 1A 10 tonnes MPO VOC
  Chloroethane 75-00-3 1A 10 tonnes MPO VOC
  Chloroform 67-66-3 1A 10 tonnes MPO VOC
  Chloromethane 74-87-3 1A 10 tonnes MPO VOC
3- Chloropropionitrile 542-76-7 1A 10 tonnes MPO  
  Chromium (and its compounds)4 NA - 04 1A 10 tonnes MPO  
  Copper (and its compounds)3 NA - 06 1A 10 tonnes MPO  
  Cresol (all isomers, and their salts)1,5 1319-77-3 1A 10 tonnes MPO VOC
  Crotonaldehyde 4170-30-3 1A 10 tonnes MPO  
  Cumene 98-82-8 1A 10 tonnes MPO VOC
  Cumene hydroperoxide 80-15-9 1A 10 tonnes MPO  
  Cyanides (ionic) NA - 07 1A 10 tonnes MPO  
  Cyclohexane 110-82-7 1A 10 tonnes MPO VOC
  Cyclohexanol 108-93-0 1A 10 tonnes MPO VOC
  Decabromodiphenyl oxide 1163-19-5 1A 10 tonnes MPO  
  Di- n -octyl phthalate 117-84-0 1A 10 tonnes MPO  
2,6- Di- t-butyl-4-methylphenol 128-37-0 1A 10 tonnes MPO  
2,4- Diaminotoluene (and its salts) 1 95-80-7 1A 10 tonnes MPO  
  Dibutyl phthalate 84-74-2 1A 10 tonnes MPO VOC
p- Dichlorobenzene 106-46-7 1A 10 tonnes MPO VOC
o- Dichlorobenzene 95-50-1 1A 10 tonnes MPO VOC
3,3'- Dichlorobenzidine dihydrochloride 612-83-9 1A 10 tonnes MPO  
1,2- Dichloroethane 107-06-2 1A 10 tonnes MPO VOC
  Dichloromethane 75-09-2 1A 10 tonnes MPO  
2,4- Dichlorophenol (and its salts) 1 120-83-2 1A 10 tonnes MPO  
1,2- Dichloropropane 78-87-5 1A 10 tonnes MPO VOC
  Dicyclopentadiene 77-73-6 1A 10 tonnes MPO VOC
  Diethanolamine (and its salts) 1 111-42-2 1A 10 tonnes MPO  
  Diethyl phthalate 84-66-2 1A 10 tonnes MPO  
  Diethyl sulphate 64-67-5 1A 10 tonnes MPO  
  Dimethyl phthalate 131-11-3 1A 10 tonnes MPO VOC
  Dimethyl sulphate 77-78-1 1A 10 tonnes MPO  
  Dimethylamine 124-40-3 1A 10 tonnes MPO VOC
N,N- Dimethylaniline (and its salts) 1 121-69-7 1A 10 tonnes MPO  
N,N- Dimethylformamide 68-12-2 1A 10 tonnes MPO VOC
4,6- Dinitro- o -cresol (and its salts) 1 534-52-1 1A 10 tonnes MPO  
2,4- Dinitrotoluene 121-14-2 1A 10 tonnes MPO  
1,4- Dioxane 123-91-1 1A 10 tonnes MPO VOC
  Diphenylamine 122-39-4 1A 10 tonnes MPO VOC
  Epichlorohydrin 106-89-8 1A 10 tonnes MPO VOC
2 Ethoxyethanol 110-80-5 1A 10 tonnes MPO VOC
2- Ethoxyethyl acetate 111-15-9 1A 10 tonnes MPO VOC
  Ethyl acrylate 140-88-5 1A 10 tonnes MPO VOC
  Ethylbenzene 100-41-4 1A 10 tonnes MPO VOC
  Ethylene 74-85-1 1A 10 tonnes MPO VOC
  Ethylene glycol 107-21-1 1A 10 tonnes MPO VOC
  Ethylene oxide 75-21-8 1A 10 tonnes MPO VOC
  Ethylene thiourea 96-45-7 1A 10 tonnes MPO  
  Fluorine 7782-41-4 1A 10 tonnes MPO  
  Formaldehyde 50-00-0 1A 10 tonnes MPO VOC
  Formic acid 64-18-6 1A 10 tonnes MPO VOC
  Halon 1211 353-59-3 1A 10 tonnes MPO  
  Halon 1301 75-63-8 1A 10 tonnes MPO  
  HCFC-122 (all isomers) 6 41834-16-6 1A 10 tonnes MPO  
  HCFC-123 (all isomers) 7 34077-87-7 1A 10 tonnes MPO  
  HCFC-124 (all isomers) 8 63938-10-3 1A 10 tonnes MPO  
  HCFC-141b 1717-00-6 1A 10 tonnes MPO  
  HCFC-142b 75-68-3 1A 10 tonnes MPO  
  HCFC-22 75-45-6 1A 10 tonnes MPO  
  Hexachlorocyclopentadiene 77-47-4 1A 10 tonnes MPO  
  Hexachlorophene 70-30-4 1A 10 tonnes MPO  
n- Hexane 110-54-3 1A 10 tonnes MPO VOC
  Hydrochloric acid 7647-01-0 1A 10 tonnes MPO  
  Hydrogen cyanide 74-90-8 1A 10 tonnes MPO  
  Hydrogen fluoride 7664-39-3 1A 10 tonnes MPO  
  Hydrogen sulphide 7783-06-4 1A 10 tonnes MPO  
  Hydroquinone (and its salts) 1 123-31-9 1A 10 tonnes MPO  
  Iron pentacarbonyl 13463-40-6 1A 10 tonnes MPO  
  Isobutyraldehyde 78-84-2 1A 10 tonnes MPO VOC
  Isophorone diisocyanate 4098-71-9 1A 10 tonnes MPO  
  Isopropyl alcohol 67-63-0 1A 10 tonnes MPO VOC
  Lithium carbonate 554-13-2 1A 10 tonnes MPO  
  Maleic anhydride 108-31-6 1A 10 tonnes MPO VOC
  Manganese (and its compounds)3 NA - 09 1A 10 tonnes MPO  
2- Mercaptobenzothiazole 149-30-4 1A 10 tonnes MPO  
  Methanol 67-56-1 1A 10 tonnes MPO VOC
2- Methoxyethanol 109-86-4 1A 10 tonnes MPO VOC
2-(2- Methoxyethoxy)ethanol 111-77-3 1A 10 tonnes MPO  
2- Methoxyethyl acetate 110-49-6 1A 10 tonnes MPO VOC
  Methyl acrylate 96-33-3 1A 10 tonnes MPO VOC
  Methyl ethyl ketone 78-93-3 1A 10 tonnes MPO VOC
  Methyl iodide 74-88-4 1A 10 tonnes MPO  
  Methyl isobutyl ketone 108-10-1 1A 10 tonnes MPO VOC
  Methyl methacrylate 80-62-6 1A 10 tonnes MPO VOC
  Methyl tert-butyl ether 1634-04-4 1A 10 tonnes MPO VOC
N- Methyl-2-pyrrolidone 872-50-4 1A 10 tonnes MPO VOC
p,p'- Methylene bis(2-chloroaniline) 101-14-4 1A 10 tonnes MPO VOC
1,1- Methylene bis(4-isocyanatocyclohexane) 5124-30-1 1A 10 tonnes MPO  
  Methylene bis(phenylisocyanate) 101-68-8 1A 10 tonnes MPO VOC
p,p'- Methylenedianiline 101-77-9 1A 10 tonnes MPO VOC
N- Methylolacrylamide 924-42-5 1A 10 tonnes MPO  
2- Methylpyridine 109-06-8 1A 10 tonnes MPO  
  Michler’s ketone (and its salts) 1 90-94-8 1A 10 tonnes MPO  
  Molybdenum trioxide 1313-27-5 1A 10 tonnes MPO  
  Naphthalene 91-20-3 1A 10 tonnes MPO VOC, PAH
  Nickel (and its compounds)3 NA - 11 1A 10 tonnes MPO  
  Nitrate ion 9 NA - 17 1A 10 tonnes MPO  
  Nitric acid 7697-37-2 1A 10 tonnes MPO  
  Nitrilotriacetic acid (and its salts) 1 139-13-9 1A 10 tonnes MPO  
p- Nitroaniline 100-01-6 1A 10 tonnes MPO  
  Nitrobenzene 98-95-3 1A 10 tonnes MPO VOC
  Nitroglycerin 55-63-0 1A 10 tonnes MPO  
2- Nitropropane 79-46-9 1A 10 tonnes MPO  
N- Nitrosodiphenylamine 86-30-6 1A 10 tonnes MPO  
  Octylphenol and its ethoxylates 10 NA - 21 1A 10 tonnes MPO VOC
  Peracetic acid (and its salts) 1 79-21-0 1A 10 tonnes MPO VOC
  Phenol (and its salts) 1 108-95-2 1A 10 tonnes MPO VOC
p- Phenylenediamine (and its salts) 1 106-50-3 1A 10 tonnes MPO  
  Phosgene 75-44-5 1A 10 tonnes MPO  
  Phosphorus (total) 11 NA - 22 1A 10 tonnes MPO  
  Phosphorus (yellow or white only) 7723-14-0 1A 10 tonnes MPO  
  Phthalic anhydride 85-44-9 1A 10 tonnes MPO VOC
  Polymeric diphenylmethane diisocyanate 9016-87-9 1A 10 tonnes MPO  
  Potassium bromate 7758-01-2 1A 10 tonnes MPO  
  Propionaldehyde 123-38-6 1A 10 tonnes MPO VOC
  Propylene 115-07-1 1A 10 tonnes MPO VOC
  Propylene oxide 75-56-9 1A 10 tonnes MPO VOC
  Pyridine (and its salts) 1 110-86-1 1A 10 tonnes MPO VOC
  Silver (and its compounds)3 NA - 13 1A 10 tonnes MPO  
  Sodium fluoride 7681-49-4 1A 10 tonnes MPO  
  Sodium nitrite 7632-00-0 1A 10 tonnes MPO  
  Styrene 100-42-5 1A 10 tonnes MPO VOC
  Sulphuric acid 7664-93-9 1A 10 tonnes MPO  
1,1,2,2- Tetrachloroethane 79-34-5 1A 10 tonnes MPO VOC
1,1,1,2- Tetrachloroethane 630-20-6 1A 10 tonnes MPO  
  Tetrachloroethylene 127-18-4 1A 10 tonnes MPO  
  Thiourea 62-56-6 1A 10 tonnes MPO  
  Thorium dioxide 1314-20-1 1A 10 tonnes MPO  
  Titanium tetrachloride 7550-45-0 1A 10 tonnes MPO  
  Toluene 108-88-3 1A 10 tonnes MPO VOC
  Total reduced sulphur (expressed as hydrogen sulphide) 12 NA - M14 1A 10 tonnes MPO  
1,2,4- Trichlorobenzene 120-82-1 1A 10 tonnes MPO  
1,1,2- Trichloroethane 79-00-5 1A 10 tonnes MPO VOC
  Trichloroethylene 79-01-6 1A 10 tonnes MPO VOC
  Triethylamine 121-44-8 1A 10 tonnes MPO VOC
1,2,4- Trimethylbenzene 95-63-6 1A 10 tonnes MPO VOC
2,2,4- Trimethylhexamethylene diisocyanate 16938-22-0 1A 10 tonnes MPO  
2,4,4- Trimethylhexamethylene diisocyanate 15646-96-5 1A 10 tonnes MPO  
  Vanadium (and its compounds) 13 7440-62-2 1A 10 tonnes MPO  
  Vinyl acetate 108-05-4 1A 10 tonnes MPO VOC
  Vinyl chloride 75-01-4 1A 10 tonnes MPO VOC
  Xylene (all isomers) 14 1330-20-7 1A 10 tonnes MPO VOC
  Zinc (and its compounds) 3 NA - 14 1A 10 tonnes MPO  
  Acrylonitrile 107-13-1 1B 1000 kg MPO VOC
  Arsenic (and its compounds) 3 NA - 02 1B 50 kg MPO  
  Bisphenol A 80-05-7 1B 100 kg MPO  
  Cadmium (and its compounds) 3 NA - 03 1B 5 kg MPO  
  Cobalt (and its compounds)3 NA - 05 1B 50 kg MPO  
  Hexavalent chromium (and its compounds) 3 NA - 19 1B 50 kg MPO  
  Hydrazine (and its salts) 1 302-01-2 1B 1000 kg MPO  
  Isoprene 78-79-5 1B 100 kg MPO VOC
  Lead (and its compounds) 15 NA - 08 1B 50 kg MPO  
  Mercury (and its compounds)3 NA - 10 1B 5 kg MPO  
 
Nonylphenol and its ethoxylates 16 NA - 20 1B 1000 kg MPO VOC
  Selenium (and its compounds) 3 NA - 12 1B 100 kg MPO  
  Thallium (and its compounds) 3 NA - 37 1B 100 kg MPO  
  Tetraethyl lead 78-00-2 1B 50 kg MPO  
  Toluene-2,4-diisocyanate 584-84-9 1B 100 kg MPO  
  Toluene-2,6-diisocyanate 91-08-7 1B 100 kg MPO VOC
  Toluenediisocyanate (mixed isomers) 26471-62-5 1B 100 kg MPO  
  Acenaphthene 83-32-9 2 50 kg total PAHs VOC, PAH
  Acenaphthylene 208-96-8 2 50 kg total PAHs VOC, PAH
  Benzo(a)anthracene 56-55-3 2 50 kg total PAHs VOC, PAH
  Benzo(a)phenanthrene 218-01-9 2 50 kg total PAHs VOC, PAH
  Benzo(a)pyrene 50-32-8 2 50 kg total PAHs VOC, PAH
  Benzo(b)fluoranthene 205-99-2 2 50 kg total PAHs VOC, PAH
  Benzo(e)pyrene 192-97-2 2 50 kg total PAHs VOC, PAH
  Benzo(g,h,i)perylene 191-24-2 2 50 kg total PAHs VOC, PAH
  Benzo(j)fluoranthene 205-82-3 2 50 kg total PAHs VOC, PAH
  Benzo(k)fluoranthene 207-08-9 2 50 kg total PAHs VOC, PAH
  Dibenz(a,j)acridine 224-42-0 2 50 kg total PAHs VOC, PAH
  Dibenzo(a,e)fluoranthene 5385-75-1 2 50 kg total PAHs VOC, PAH
  Dibenzo(a,e)pyrene 192-65-4 2 50 kg total PAHs VOC, PAH
  Dibenzo(a,h)acridine 226-36-8 2 50 kg total PAHs VOC, PAH
  Dibenzo(a,h)anthracene 53-70-3 2 50 kg total PAHs VOC, PAH
  Dibenzo(a,h)pyrene 189-64-0 2 50 kg total PAHs VOC, PAH
  Dibenzo(a,i)pyrene 189-55-9 2 50 kg total PAHs VOC, PAH
  Dibenzo(a,l)pyrene 191-30-0 2 50 kg total PAHs VOC, PAH
7H- Dibenzo(c,g)carbazole 194-59-2 2 50 kg total PAHs VOC, PAH
7,12- Dimethylbenz(a)anthracene 57-97-6 2 50 kg total PAHs VOC, PAH
  Fluoranthene 206-44-0 2 50 kg total PAHs VOC, PAH
  Fluorene 86-73-7 2 50 kg total PAHs VOC, PAH
  Indeno(1,2,3-c,d)pyrene 193-39-5 2 50 kg total PAHs VOC, PAH
3- Methylcholanthrene 56-49-5 2 50 kg total PAHs VOC, PAH
5- Methylchrysene 3697-24-3 2 50 kg total PAHs VOC, PAH
1- Nitropyrene 5522-43-0 2 50 kg total PAHs VOC, PAH
  Perylene 198-55-0 2 50 kg total PAHs VOC, PAH
  Phenanthrene 85-01-8 2 50 kg total PAHs VOC, PAH
  Pyrene 129-00-0 2 50 kg total PAHs VOC, PAH
  Quinoline 91-22-5 2 50 kg total PAHs VOC, PAH
1,2,3,4,7,8,9- Heptachlorodibenzofuran 55673-89-7 3 Activity-based  
1,2,3,4,6,7,8- Heptachlorodibenzofuran 67562-39-4 3 Activity-based  
1,2,3,4,6,7,8- Heptachlorodibenzo-p-dioxin 35822-46-9 3 Activity-based  
  Hexachlorobenzene 118-74-1 3 Activity-based  
1,2,3,7,8,9- Hexachlorodibenzofuran 72918-21-9 3 Activity-based  
1,2,3,6,7,8- Hexachlorodibenzofuran 57117-44-9 3 Activity-based  
1,2,3,4,7,8- Hexachlorodibenzofuran 70648-26-9 3 Activity-based  
2,3,4,6,7,8- Hexachlorodibenzofuran 60851-34-5 3 Activity-based  
1,2,3,6,7,8- Hexachlorodibenzo-p-dioxin 57653-85-7 3 Activity-based  
1,2,3,4,7,8- Hexachlorodibenzo-p-dioxin 39227-28-6 3 Activity-based  
1,2,3,7,8,9- Hexachlorodibenzo-p-dioxin 19408-74-3 3 Activity-based  
  Octachlorodibenzofuran 39001-02-0 3 Activity-based  
  Octachlorodibenzo-p-dioxin 3268-87-9 3 Activity-based  
2,3,4,7,8- Pentachlorodibenzofuran 57117-31-4 3 Activity-based  
1,2,3,7,8- Pentachlorodibenzofuran 57117-41-6 3 Activity-based  
1,2,3,7,8- Pentachlorodibenzo-p-dioxin 40321-76-4 3 Activity-based  
2,3,7,8- Tetrachlorodibenzofuran 51207-31-9 3 Activity-based  
2,3,7,8- Tetrachlorodibenzo-p-dioxin 1746-01-6 3 Activity-based  
  Carbon monoxide 630-08-0 4 20 tonnes release  
  Nitrogen oxides (expressed as nitrogen dioxide) 11104-93-1 4 20 tonnes release  
  PM2.517,18 NA - M10 4 0.3 tonnes release  
  PM1018,19, NA - M09 4 0.5 tonnes release  
  Sulphur dioxide 7446-09-5 4 20 tonnes release  
  Total Particulate Matter 18, 20 NA - M08 4 20 tonnes release  
  Volatile Organic Compounds (VOCs) 21 NA - M16 4 10 tonnes release VOC
  Acetylene 74-86-2 5 1 tonne air release VOC
  Adipic acid 124-04-9 5 1 tonne air release VOC
  Aniline (and its salts) 1 62-53-3 5 1 tonne air release VOC
  Anthraquinone (all isomers) NA - 23 5 1 tonne air release VOC
  Benzene 71-43-2 5 1 tonne air release VOC
1,3- Butadiene 106-99-0 5 1 tonne air release VOC
  Butane (all isomers) NA - 24 5 1 tonne air release VOC
  Butene (all isomers) 25167-67-3 5 1 tonne air release VOC
2- Butoxyethanol 111-76-2 5 1 tonne air release VOC
n- Butyl acetate 123-86-4 5 1 tonne air release VOC
  Chlorobenzene 108-90-7 5 1 tonne air release VOC
  Creosote 8001-58-9 5 1 tonne air release VOC
  Cycloheptane NA - 25 5 1 tonne air release VOC
  Cyclohexene NA - 26 5 1 tonne air release VOC
  Cyclooctane NA - 27 5 1 tonne air release VOC
  Decane (all isomers) NA - 28 5 1 tonne air release VOC
p- Dichlorobenzene 106-46-7 5 1 tonne air release VOC
1,2- Dichloroethane 107-06-2 5 1 tonne air release VOC
  Diethylene glycol butyl ether 112-34-5 5 1 tonne air release VOC
  Diethylene glycol ethyl ether acetate 112-15-2 5 1 tonne air release VOC
  Dihydronapthalene (all isomers) NA - 29 5 1 tonne air release VOC
  Dimethylether 115-10-6 5 1 tonne air release VOC
  Dodecane (all isomers) NA - 30 5 1 tonne air release VOC
  Ethyl acetate 141-78-6 5 1 tonne air release VOC
  Ethyl alcohol 64-17-5 5 1 tonne air release VOC
  Ethylene 74-85-1 5 1 tonne air release VOC
  Ethylene glycol butyl ether acetate 112-07-2 5 1 tonne air release VOC
  Ethylene glycol hexyl ether 112-25-4 5 1 tonne air release VOC
  Formaldehyde 50-00-0 5 1 tonne air release VOC
  Furfuryl alcohol 98-00-0 5 1 tonne air release VOC
  Heavy alkylate naphtha 64741-65-7 5 1 tonne air release VOC
  Heavy aromatic solvent naphtha 64742-94-5 5 1 tonne air release VOC
  Heptane (all isomers) NA - 31 5 1 tonne air release VOC
n- Hexane 110-54-3 5 1 tonne air release VOC
  Hexane 22 NA - 32 5 1 tonne air release VOC
  Hexene (all isomers) 25264-93-1 5 1 tonne air release VOC
  Hydrotreated heavy naphtha 64742-48-9 5 1 tonne air release VOC
  Hydrotreated light distillate 64742-47-8 5 1 tonne air release VOC
  Isopropyl alcohol 67-63-0 5 1 tonne air release VOC
  Light aromatic solvent naphtha 64742-95-6 5 1 tonne air release VOC
D- Limonene 5989-27-5 5 1 tonne air release VOC
  Methanol 67-56-1 5 1 tonne air release VOC
  Methyl ethyl ketone 78-93-3 5 1 tonne air release VOC
  Methyl isobutyl ketone 108-10-1 5 1 tonne air release VOC
2- Methyl-3-hexanone 7379-12-6 5 1 tonne air release VOC
  Methylindan (all isomers) 27133-93-3 5 1 tonne air release VOC
  Mineral spirits 64475-85-0 5 1 tonne air release VOC
  Myrcene 123-35-3 5 1 tonne air release VOC
  Naphtha 8030-30-6 5 1 tonne air release VOC
  Nonane (all isomers) NA - 33 5 1 tonne air release VOC
  Octane (all isomers) NA - 34 5 1 tonne air release VOC
  Pentane (all isomers) NA - 35 5 1 tonne air release VOC
  Pentene (all isomers) NA - 36 5 1 tonne air release VOC
beta- Phellandrene 555-10-2 5 1 tonne air release VOC
  Phenyl isocyanate 103-71-9 5 1 tonne air release VOC
alpha- Pinene 80-56-8 5 1 tonne air release VOC
beta- Pinene 127-91-3 5 1 tonne air release VOC
  Propane 74-98-6 5 1 tonne air release VOC
  Propylene 115-07-1 5 1 tonne air release VOC
  Propylene glycol butyl ether 5131-66-8 5 1 tonne air release VOC
  Propylene glycol methyl ether acetate 108-65-6 5 1 tonne air release VOC
  Solvent naphtha light aliphatic 64742-89-8 5 1 tonne air release VOC
  Solvent naphtha medium aliphatic 64742-88-7 5 1 tonne air release VOC
  Stoddard solvent 8052-41-3 5 1 tonne air release VOC
  Styrene 100-42-5 5 1 tonne air release VOC
  Terpenes (all isomers) 68956-56-9 5 1 tonne air release VOC
  Tetrahydrofuran 109-99-9 5 1 tonne air release VOC
  Toluene 108-88-3 5 1 tonne air release VOC
1,2,4- Trimethylbenzene 95-63-6 5 1 tonne air release VOC
  Trimethylbenzene 23 25551-13-7 5 1 tonne air release VOC
  Trimethylfluorosilane 420-56-4 5 1 tonne air release VOC
  Vinyl acetate 108-05-4 5 1 tonne air release VOC
  VM & P naphtha 8032-32-4 5 1 tonne air release VOC
  White mineral oil 8042-47-5 5 1 tonne air release VOC
  Xylene (all isomers) 14 1330-20-7 5 1 tonne air release VOC

Notes:

Disclaimer:

Should any inconsistencies be found between this list and the official Canada Gazette, Part I Notice with respect to substances in the National Pollutant Release Inventory, the Notice will prevail.

**Threshold Category Descriptions:

   Part 1A: A report is required for one or more substances if they were manufactured, processed or otherwise used (MPO) at a facility at a concentration ≥ 1% by weight (except for by-products and mine tailings) and in a quantity of 10 tonnes or more, and employees worked 20,000 hours or more at a facility.

   Part 1B: A report is required for substances if they were manufactured, processed or otherwise used at a facility in quantities equal to or exceeding quantity and concentration thresholds, and employees worked 20,000 hours or more at a facility. The concentration threshold is not applicable for by-products or tailings/waste rock.

   Part 2: A report is required for substances if polycyclic aromatic hydrocarbons (PAHs) were incidentally manufactured or present in mine tailings, and released, disposed or transferred from a facility in a combined quantity of 50 kilograms or more, and employees worked 20,000 hours or more at a facility. Wood preservation facilities using creosote must report regardless of the reporting threshold for PAHs and regardless of the number of hours worked by employees.

   Part 3: A report is required for substances if a facility was engaged in specific activities.

   Part 4: All facilities are required to consider Criteria Air Contaminants (CACs) released from stationary combustion equipment regardless of the number of employees at the facility. Additionally, facilities with greater than 20,000 employee hours must also consider all other sources of CACs at the facility.

   Part 5: A report is required for any of the 75 listed Volatile Organic Compounds (VOCs) (including individual substances, isomer groups and other groups and mixtures) if they were released to air in a quantity of 1 tonne or greater and the 10 tonne air release threshold for VOCs (under Part 4) was met.

Substance Notes:

1 Total of the acid or base and its salts, expressed as the molecular weight of the acid or base. The CAS RN corresponds to the weak acid or base.

2 Total of ammonia (NH3 - CAS RN 7664-41-7) and the ammonium ion (NH4+ - CAS RN 14798-03-9) in solution, expressed as ammonia.

3 Total of the pure element and the equivalent weight of the element contained in any compound, alloy or mixture.

4 Total of pure chromium and the equivalent weight of chromium contained in any compound, alloy or mixture. Excludes hexavalent chromium (and its compounds).

5 Total of all isomers of cresol:  m-cresol (CAS RN 108-39-4), o-cresol (CAS RN 95-48-7) and p-cresol (CAS RN 106-44-5).

6 Total of all isomers, including, but not limited to, isomers with CAS RN 354-12-1, 354-15-4 and 354-21-2.

7 Total of all isomers, including, but not limited to, isomers with CAS RN 306-83-2, 354-23-4, 812-04-4 and 90454-18-5.

8 Total of all isomers, including, but not limited to, isomers with CAS RN 76-14-2, 354-25-6, 374-07-2 and
2837-89-0.

9 Nitrate ion in solution at a pH of 6.0 or more.

10 Total of octylphenol and its ethoxylates, limited to:  CAS RN 140-66-9, 1806-26-4, 27193-28-8, 68987-90-6, 9002-93-1, and 9036-19-5.

11 Excludes yellow or white phosphorous (CAS RN 7723-14-0).

12 Total of hydrogen sulphide (CAS RN 7783-06-4), carbon disulphide (CAS RN 75-15-0), carbonyl sulphide (CAS RN 463-58-1), dimethyl sulphide (CAS RN 75-18-3), dimethyl disulphide (CAS RN 624-92-0), and methyl mercaptan (CAS RN 74-93-1), expressed as hydrogen sulphide.

13 Total of pure vanadium and the equivalent weight of vanadium contained in any compound or mixture. Excludes vanadium contained in an alloy.

14 Total of all isomers of xylene:  m-xylene (CAS RN 108-38-3), o-xylene (CAS RN 95-47-6) and p-xylene (CAS RN 106-42-3).

15 Total of pure lead and the equivalent weight of lead contained in any compound, alloy or mixture. Excludes lead (and its compounds) contained in stainless steel, brass or bronze alloys and lead contained in tetraethyl lead (CAS RN 78-00-2).

16Total of nonylphenol, its ethoxylates and derivatives, limited to:  CAS RN 104-40-5, 25154-52-3, 84852-15-3, 1323-65-5, 26523-78-4, 28987-17-9, 68081-86-7, 68515-89-9, 68515-93-5, 104-35-8, 20427-84-3,
26027-38-3, 27177-05-5, 27177-08-8, 28679-13-2, 27986-36-3, 37251-69-7, 7311-27-5, 9016-45-9,
27176-93-8, 37340-60-6, 51811-79-1, 51938-25-1, 68412-53-3, 9051-57-4, 37205-87-1, 68412-54-4, and 127087-87-0.

17 Particulate matter with a diameter less than or equal to 2.5 micrometres.

18 Filterable particulate matter, on a dry basis. Excludes condensable particulate matter.

19 Particulate matter with a diameter less than or equal to 10 micrometres.

20 Particulate matter with a diameter less than 100 micrometres.

21 Volatile organic compounds as set out in section 65 of the List of Toxic Substances in Schedule 1 of the Canadian Environmental Protection Act, 1999.

22 Total of all isomers. Excludes n-hexane (CAS RN 110-54-3).

23 Total of 1,2,3-trimethylbenzene (CAS RN 526-73-8) and 1,3,5-trimethylbenzene (CAS RN 108-67-8). Excludes 1,2,4-trimethylbenzene (CAS RN 95-63-6).

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