_id No. CASRN Contaminant AAQC (µg/m3) Averaging Time Basis Notes
1 1 75-07-0 Acetaldehyde 500 24-Hour Health "N/A"
2 1 75-07-0 Acetaldehyde 500 ½-Hour Health "N/A"
3 2 64-19-7 Acetic acid 2,500 24-Hour Odour To be updated
4 3 67-64-1 Acetone 11,880 24-Hour Health "N/A"
5 4 75-05-8 Acetonitrile 70 24-Hour Health "N/A"
6 5 98-86-2 Acetophenone 1,167 1-Hour Health "N/A"
7 5 98-86-2 Acetophenone 850 10-Minute Odour "N/A"
8 6 74-86-2 Acetylene 56,000 24-Hour Odour To be updated
9 7 107-02-8 Acrolein 0.4 24-Hour Health "N/A"
10 7 107-02-8 Acrolein 4.5 1-Hour Health "N/A"
11 8 79-06-1 Acrylamide 15 24-Hour Health "N/A"
12 9 107-13-1 Acrylonitrile 0.12 Annual Health "N/A"
13 9 107-13-1 Acrylonitrile 0.6 24-Hour Health "Converted from the annual AAQC to allow assessment of 24-hour air quality data"
14 10 124-04-9 Adipic acid 1,167 24-Hour Health "N/A"
15 11 " N/A" Alkyltoluene sulphonamide, N- 120 24-Hour Particulate "N/A"
16 12 106-92-3 Allyl glycidyl ether 60 24-Hour Health "N/A"
17 13 300-92-5 Aluminum distearate 2,180 24-Hour Health "N/A"
18 14 1344-28-1 Aluminum oxide 120 24-Hour Particulate "N/A"
19 15 7047-84-9 Aluminum stearate 2,180 24-Hour Health "N/A"
20 16 637-12-7 Aluminum tristearate 2,180 24-Hour Health "N/A"
21 17 7664-41-7 Ammonia 100 24-Hour Health "N/A"
22 18 12125-02-9 Ammonium chloride 120 24-Hour Particulate "N/A"
23 19 123-92-2 Amyl acetate, iso- 53,200 24-Hour Health & Odour "N/A"
24 20 628-63-7 Amyl acetate, n- 53,200 24-Hour Health & Odour "N/A"
25 21 626-38-0 Amyl acetate, secondary 66,500 24-Hour Health & Odour "N/A"
26 22 7440-36-0 Antimony 25 24-Hour Health "N/A"
27 23 7440-38-2 Arsenic and compounds 0.3 24-Hour Health "N/A"
28 24 7784-42-1 Arsine 5 24-Hour Health "N/A"
29 24 7784-42-1 Arsine 10 ½-Hour Health "N/A"
30 25 1332-21-4 "Asbestos (fibres > 5 µm in length)" "0.04 fibres/cm3" 24-Hour Health "N/A"
31 26 7440-39-3 Barium - total water soluble 10 24-Hour Health "N/A"
32 27 71-43-2 Benzene 0.45 Annual Health "N/A"
33 27 71-43-2 Benzene 2.3 24-Hour Health "Converted from the annual AAQC to allow assessment of 24-hour air quality data"
34 28 50-32-8 Benzo(a)pyrene [as a surrogate of total Polycyclic Aromatic Hydrocarbons (PAHs)] 0.00001 Annual Health "B[a]P is used as a surrogate for the total carcinogenicity of PAHs; this AAQC does not apply to naphthalene (CASRN 91-20-3) nor for any other PAH for which an AAQC may be derived separately"
35 28 50-32-8 Benzo(a)pyrene [as a surrogate of total Polycyclic Aromatic Hydrocarbons (PAHs)] 0.00005 24-Hour Health "Converted from the annual AAQC to allow assessment of 24-hour air quality data"
36 29 65-85-0 Benzoic acid 700 24-Hour Health "N/A"
37 30 95-16-9 Benzothiazole 70 24-Hour Health "N/A"
38 31 98-88-4 Benzoyl chloride 125 24-Hour Corrosion & Health "N/A"
39 32 100-51-6 Benzyl alcohol 880 24-Hour Health "N/A"
40 33 7440-41-7 Beryllium and beryllium compounds 0.01 24-Hour Health "N/A"
41 34 92-52-4 Biphenyl 60 1-Hour Odour To be updated
42 35 1303-96-4 Borax 33 24-Hour Health "N/A"
43 36 10043-35-3 Boric acid 33 24-Hour Health "N/A"
44 37 7440-42-8 Boron 120 24-Hour Particulate "N/A"
45 38 10294-33-4 Boron tribromide 35 24-Hour Corrosion "N/A"
46 39 10294-34-5 Boron trichloride 35 24-Hour Corrosion "N/A"
47 40 7637-07-02 Boron trifluoride 2 24-Hour Vegetation "N/A"
48 41 314-40-9 Bromacil 10 24-Hour Health "N/A"
49 42 7726-95-6 Bromine 20 24-Hour Health "N/A"
50 43 75-25-2 Bromoform 55 24-Hour Health "N/A"
51 44 106-99-0 Butadiene, 1,3- 2 Annual Health "N/A"
52 44 106-99-0 Butadiene, 1,3- 10 24-Hour Health "Converted from the annual AAQC to allow assessment of 24-hour air quality data"
53 45 71-36-3 Butanol, n- 920 24-Hour Health "N/A"
54 45 71-36-3 Butanol, n- 2,100 10-Minute Odour "N/A"
55 46 75-65-0 Butanol, tertiary 30,300 24-Hour Health "N/A"
56 47 5131-66-8 Butoxy-2-propanol, 1- 3,300 24-Hour Health "N/A"
57 48 123-86-4 Butyl acetate, n- 15,000 1-Hour Health "N/A"
58 48 123-86-4 Butyl acetate, n- 1,000 10-Minute Odour "N/A"
59 49 141-32-2 Butyl acrylate 120 24-Hour Particulate "N/A"
60 50 3622-84-2 Butyl benzene sulphonamide, N- 35 24-Hour Health "N/A"
61 51 85-68-7 Butyl benzene phthalate 150 24-Hour Health "N/A"
62 52 123-95-5 Butyl stearate 120 24-Hour Particulate "N/A"
63 53 7440-43-9 Cadmium and cadmium compounds 0.005 Annual Health "N/A"
64 53 7440-43-9 Cadmium and cadmium compounds 0.025 24-Hour Health "Converted from the annual AAQC to allow assessment of 24-hour air quality data"
65 54 75-20-7 Calcium carbide 10 24-Hour Corrosion "N/A"
66 55 592-01-8 Calcium cyanide (as total salt) 120 24-Hour Particulate "N/A"
67 56 1305-62-0 Calcium hydroxide 13.5 24-Hour Corrosion "N/A"
68 57 1305-78-8 Calcium oxide 10 24-Hour Corrosion "N/A"
69 58 1592-23-0 Calcium stearate 35 24-Hour Health "N/A"
70 59 133-06-2 Captan 25 24-Hour Health "N/A"
71 60 1333-86-4 Carbon black 10 24-Hour Soiling "N/A"
72 61 75-15-0 Carbon disulphide 330 24-Hour Odour To be updated
73 62 630-08-0 Carbon monoxide "15,700 (13 ppm)" 8-Hour Health "N/A"
74 62 630-08-0 Carbon monoxide "36,200 (30 ppm)" 1-Hour Health "N/A"
75 63 56-23-5 Carbon tetrachloride 2.4 24-Hour Health "N/A"
76 64 133-90-4 Chloramben 120 24-Hour Particulate "N/A"
77 65 57-74-9 Chlordane 5 24-Hour Health "N/A"
78 66 7782-50-5 Chlorine 10 24-Hour Health "N/A"
79 66 7782-50-5 Chlorine 230 10-Minute Odour "N/A"
80 67 10049-04-4 Chlorine dioxide 2 24-Hour Health "N/A"
81 68 75-45-6 Chlorodifluoromethane (Freon 22) 350,000 24-Hour Health "See O. Reg. 463/10 for Ozone Depleting Substances and Other Halocarbons for further restrictions on these, and several other ozone-depleting substances"
82 69 75-00-3 Chloroethane 5,600 24-Hour Health "N/A"
83 70 67-66-3 Chloroform 0.2 Annual Health "N/A"
84 70 67-66-3 Chloroform 1 24-Hour Health "Converted from the annual AAQC to allow assessment of 24-hour air quality data"
85 71 18540-29-9 "Chromium compounds (hexavalent forms; CrVI) " "0.00007 (as PM10); 0.00014 (as SPM)" Annual Health "Applies to either CrVI forms only, or to the percentage of CrVI species relative to total chromium"
86 71 18540-29-9 "Chromium compounds (hexavalent forms; CrVI)" "0.00035 (as PM10); 0.0007 (as SPM)" 24-Hour Health "Converted from the annual AAQC to allow assessment of 24-hour air quality data"
87 72 7440-47-3 Chromium compounds (metallic, divalent and trivalent forms) 0.5 24-Hour Health "Applies to either chromium metallic (CASRN 7440-47-3), divalent (CASRN 22541-79-3), and trivalent (CASRN 16065-83-1), or to the percentage of Cr metallic, divalent and trivalent relative to total chromium"
88 73 77-92-9 Citric acid 120 24-Hour Particulate "N/A"
89 73 77-92-9 Citric acid 300 1-Hour Health "N/A"
90 74 8007-45-2 Coal tar pitch volatiles - soluble fraction 0.2 Annual Health "N/A"
91 74 8007-45-2 Coal tar pitch volatiles - soluble fraction 1 24-Hour Health "Converted from the annual AAQC to allow assessment of 24-hour air quality data"
92 75 7440-48-4 Cobalt 0.1 24-Hour Health "N/A"
93 76 7440-50-8 Copper 50 24-Hour Health "N/A"
94 77 1319-77-3 Cresols 75 24-Hour Health "Applies to the following isomers, individually or as a mixture: o-cresol (CASRN 95-48-7), p-cresol (CASRN 106-44-5), and m-cresol (CASRN 108-39-4)"
95 78 506-77-4 Cyanogen chloride 12 24-Hour Health "N/A"
96 79 110-82-7 Cyclohexane 6,100 24-Hour Health "N/A"
97 80 127-20-8 Dalapon sodium salt 50 24-Hour Health "N/A"
98 81 17702-41-9 Decaborane 25 24-Hour Health "N/A"
99 82 124-18-5 Decane, n- 60,000 1-Hour Health & Odour "N/A"
100 83 872-05-9 Decene, 1- 60,000 24-Hour Health "N/A"
101 84 1395-21-7 Detergent enzyme (Subtilisin) 0.06 24-Hour Health "N/A"
102 85 123-42-2 Diacetone alcohol 1,350 10-Minute Odour "N/A"
103 86 333-41-5 Diazinon 3 24-Hour Health "N/A"
104 87 19287-45-7 Diborane 10 24-Hour Health "N/A"
105 88 111-92-2 Dibutyl amine 2,645 1-Hour Health "N/A"
106 89 84-74-2 Dibutyl phthalate (DBP, di-n- butyl phthalate) 50 24-Hour Health "N/A"
107 90 77-58-7 Dibutyltin dilaurate 30 24-Hour Health "N/A"
108 91 131-15-7 Dicapryl phthalate 120 24-Hour Particulate "N/A"
109 92 95-50-1 Dichlorobenzene, 1,2- 30,500 1-Hour Health "N/A"
110 93 106-46-7 Dichlorobenzene, 1,4- 95 24-Hour Health "N/A"
111 94 75-34-3 Dichloroethane, 1,1- 165 24-Hour Health "N/A"
112 95 156-59-2 Dichloroethylene, cis-1,2- 105 24-Hour Health "N/A"
113 96 540-59-0 Dichloroethylene, sym-1,2- 105 24-Hour Health "N/A"
114 97 156-60-5 Dichloroethylene, trans-1,2- 105 24-Hour Health "N/A"
115 98 76-14-2 Dichloro-1,1,2,2-tetrafluoroethane, 1,2- (Freon 114) 700,000 24-Hour Health "See O. Reg. 463/10 for Ozone Depleting Substances and Other Halocarbons for further restrictions on these, and several other ozone-depleting substances"
116 99 109-89-7 Diethyl amine 2,910 1-Hour Health "N/A"
117 100 112-34-5 Diethylene glycol monobutyl ether 65 24-Hour Health "N/A"
118 101 124-17-4 Diethylene glycol monobutyl ether acetate 85 24-Hour Health "N/A"
119 102 111-90-0 Diethylene glycol monoethyl ether 1,100 10-Minute Odour "N/A"
120 103 112-15-2 Diethylene glycol monoethyl ether acetate 1,800 24-Hour Health "N/A"
121 104 111-77-3 Diethylene glycol monomethyl ether 1,200 24-Hour Health "N/A"
122 105 117-81-7 Di(2-ethylhexyl) phthalate 50 24-Hour Health "N/A"
123 106 84-66-2 Diethyl phthalate (DEP) 125 24-Hour Health "N/A"
124 107 75-71-8 Difluorodichloromethane (Freon 12) 500,000 24-Hour Health "See O. Reg. 463/10 for Ozone Depleting Substances and Other Halocarbons for further restrictions on these, and several other ozone-depleting substances"
125 108 84-75-3 Dihexyl phthalate (DHP) 50 24-Hour Health "N/A"
126 109 108-83-8 Diisobutyl ketone 3,500 24-Hour Health "N/A"
127 109 108-83-8 Diisobutyl ketone 649 10-Minute Odour "N/A"
128 110 127-19-5 Dimethyl acetamide, N,N- 300 24-Hour Health "N/A"
129 111 124-40-3 Dimethyl amine 1,840 1-Hour Health & Odour "N/A"
130 112 109-55-7 Dimethyl-1,3-diamino propane, N,N- 20 24-Hour Health "N/A"
131 113 624-92-0 Dimethyl disulphide 56 10-Minute Odour "N/A"
132 114 115-10-6 Dimethyl ether 2,100 24-Hour Odour To be updated
133 115 756-79-6 Dimethyl methylphosphonate 875 24-Hour Health "N/A"
134 116 131-11-3 Dimethyl phthalate (DMP) 125 24-Hour Health "N/A"
135 117 67-68-5 Dimethyl sulfoxide 2,100 24-Hour Health "N/A"
136 118 75-18-3 Dimethyl sulphide 30 10-Minute Odour "N/A"
137 119 117-84-0 Di-n-octyl phthalate 120 24-Hour Health & Particulate "N/A"
138 120 123-91-1 Dioxane 3,500 24-Hour Health "N/A"
139 121 " N/A" "Dioxins, furans and dioxin-like PCBs" "0.1 pg TEQ/m3" 24-Hour Health "See the Appendix for applicable contaminants and calculation of total concentration of dioxins, furans and dioxin-like PCBs"
140 122 646-06-0 Dioxolane-1,3 10 24-Hour Health "N/A"
141 123 122-39-4 Diphenylamine 17.5 24-Hour Health "N/A"
142 124 85-00-7 Diquat dibromide – respirable 0.032 24-Hour Health "N/A"
143 124 85-00-7 Diquat dibromide - total 0.16 24-Hour Health "N/A"
144 125 1886-81-3 Dodecyl benzene sulphonic acid 120 24-Hour Particulate "N/A"
145 126 2439-10-3 Dodine 10 24-Hour Health "N/A"
146 127 548-73-2 Droperidol 1 24-Hour Health "N/A"
147 128 " N/A" Dustfall "4.6 g/m2" Annual Soiling Value is the arithmetic mean of 30-day collection periods over an annual averaging time
148 128 " N/A" Dustfall "7 g/m2" 30-Day Soiling Value is compared against any 30-day collection period
149 129 64-17-5 Ethanol (Ethyl alcohol) 19,000 1-Hour Odour To be updated
150 130 141-78-6 Ethyl acetate 19,000 1-Hour Odour To be updated
151 131 140-88-5 Ethyl acrylate 4.5 1-Hour Odour To be updated
152 132 84-51-5 Ethylanthraquinone, 2- 10 24-Hour Health "N/A"
153 133 100-41-4 Ethyl benzene 1,000 24-Hour Health "N/A"
154 133 100-41-4 Ethyl benzene 1,900 10-Minute Odour "N/A"
155 134 74-85-1 Ethylene 40 24-Hour Vegetation "N/A"
156 135 106-93-4 Ethylene dibromide 3 24-Hour Health "N/A"
157 136 107-06-2 Ethylene dichloride 0.4 Annual Health "N/A"
158 136 107-06-2 Ethylene dichloride 2 24-Hour Health "Converted from the annual AAQC to allow assessment of 24-hour air quality data"
159 137 107-21-1 Ethylene glycol 12,700 24-Hour Health "N/A"
160 138 111-76-2 Ethylene glycol butyl ether (Butyl cellosolve) 2,400 24-Hour Health "N/A"
161 138 111-76-2 Ethylene glycol butyl ether (Butyl cellosolve) 500 10-Minute Odour "N/A"
162 138 112-07-2 Ethylene glycol butyl ether acetate (Butyl cellosolve acetate) 3,250 24-Hour Health "N/A"
163 138 112-07-2 Ethylene glycol butyl ether acetate (Butyl cellosolve acetate) 700 10-Minute Odour "N/A"
164 139 628-96-6 Ethylene glycol dinitrate 3 24-Hour Health "N/A"
165 140 110-80-5 Ethylene glycol ethyl ether (Cellosolve) 380 24-Hour Health "N/A"
166 140 110-80-5 Ethylene glycol ethyl ether (Cellosolve) 1,100 10-Minute Odour "N/A"
167 141 111-15-9 Ethylene glycol ethyl ether acetate (Cellosolve acetate ) 540 24-Hour Health "N/A"
168 141 111-15-9 Ethylene glycol ethyl ether acetate (Cellosolve acetate ) 300 10-Minute Odour "N/A"
169 142 112-25-4 Ethylene glycol monohexyl ether 2,500 24-Hour Health "N/A"
170 143 75-21-8 Ethylene oxide 0.04 Annual Health "N/A"
171 143 75-21-8 Ethylene oxide 0.2 24-Hour Health "Converted from the annual AAQC to allow assessment of 24-hour air quality data"
172 144 60-00-4 Ethylenediaminetetra acetic acid 120 24-Hour Particulate "N/A"
173 145 60-29-7 Ethyl ether 8,000 24-Hour Health "N/A"
174 145 60-29-7 Ethyl ether 950 10-Minute Odour "N/A"
175 146 763-69-9 Ethyl-3-ethoxy propionate 200 10-Minute Odour "N/A"
176 147 104-76-7 Ethyl hexanol, 2- 600 1-Hour Odour To be updated
177 148 990-73-8 Fentanyl citrate 0.02 24-Hour Health "N/A"
178 149 1309-37-1 Ferric oxide 25 24-Hour Soiling "N/A"
179 150 7664-39-3 Fluoridation – Total fluorides (Growing season) "40 µg/100 cm2" 30-Day Vegetation The growing season is from May 1 to September 30 in Northern Ontario (Northern Region), and from April 1 to October 31 in Southern Ontario (South West, West Central, East & Central Regions)
180 150 7664-39-3 Fluoridation – Total fluorides (Non-growing Season) "80 µg/100 cm2" 30-Day Vegetation The non-growing season which is from October 1 to April 30 in Northern Ontario (Northern Region), and from November 1 to March 31 in Southern Ontario (South West, West Central, East & Central Regions)
181 150 7664-39-3 "Fluorides (as HF) – Gaseous (growing season)" "0.34 (0.4 ppb)" 30-Day Vegetation See Fluoridation note above on growing season
182 150 7664-39-3 "Fluorides (as HF) – Gaseous (growing season)" "0.86 (1 ppb)" 24-Hour Health "Converted from the 30-day AAQC for Fluorides (as HF) – Gaseous (growing season) to allow assessment of 24-hour air quality data"
183 150 7664-39-3 "Fluorides (as HF) – Total (growing season)" "0.69 (0.8 ppb)" 30-Day Vegetation See Fluoridation note above on growing season
184 150 7664-39-3 "Fluorides (as HF) – Total (growing season)" "1.72 (2 ppb)" 24-Hour Vegetation "Converted from the 30-day AAQC for Fluorides (as HF) – Total (growing season) to allow assessment of 24-hour air quality data"
185 150 7664-39-3 "Fluorides (as HF) – Total (non-growing season)" "1.38 (1.6 ppb)" 30-Day Vegetation See Fluoridation note above on non-growing season
186 150 7664-39-3 "Fluorides (as HF) – Total (non-growing season)" "3.44 (4 ppb)" 24-Hour Vegetation "Converted from the 30-day AAQC for Fluorides (as HF) – Total (non-growing season) to allow assessment of 24-hour air quality data"
187 150 7664-39-3 Fluorides in dry forage – Dry weight "60 ppm" 60-Day Effects on animals Average of 2 consecutive months
188 150 7664-39-3 Fluorides in dry forage – Dry weight "35 ppm" 30-Day Effects on animals Average over a growing season
189 150 7664-39-3 Fluorides in dry forage – Dry weight "80 ppm" 30-Day Effects on animals Average results for any single month
190 151 " N/A" Fluorinert 3M-FC-70 120 24-Hour Particulate "N/A"
191 152 50-00-0 Formaldehyde 65 24-Hour Health "N/A"
192 153 64-18-6 Formic acid 500 24-Hour Health "N/A"
193 154 98-01-1 Furfural 1,000 1-Hour Odour To be updated
194 155 98-00-0 Furfuryl alcohol 1,000 24-Hour Health "N/A"
195 156 111-30-8 Glutaraldehyde 14 24-Hour Health "N/A"
196 156 111-30-8 Glutaraldehyde 35 1-Hour Health "Converted from the 24-hour AAQC to allow assessment of 1-hour air quality data"
197 157 52-86-8 Haloperidol 0.1 24-Hour Health "N/A"
198 158 142-82-5 Heptane, n- 11,000 24-Hour Health "N/A"
199 159 77-47-4 Hexachlorocyclopentadiene 2 24-Hour Health "N/A"
200 160 999-97-3 Hexamethyl disilazane 2 24-Hour Health "N/A"
201 161 4035-89-6 HDI Biuret (HDI-BT) 3 24-Hour Health "N/A"
202 162 3779-63-3 HDI Isocyanurate (HDI-IC) 3 24-Hour Health "N/A"
203 163 822-06-0 Hexamethylene diisocyanate (HDI) monomer 0.03 24-Hour Health "N/A"
204 164 28182-81-2 "HDI Polyisocyanate (HDI-BT and HDI-IC)" 3 24-Hour Health "N/A"
205 165 124-09-4 Hexamethylenediamine 16 24-Hour Health "N/A"
206 166 111-49-9 Hexamethyleneimine 315 24-Hour Health "N/A"
207 167 110-54-3 Hexane, n- (n-Hexane and hexane isomers only) 7,500 24-Hour Health "N/A"
208 167 110-54-3 Hexane, n- (part of a mixture) 2,500 24-Hour Health "N/A"
209 168 107-41-5 Hexylene glycol 12,000 1-Hour Health "N/A"
210 169 10035-10-6 Hydrogen bromide 668 1-Hour Health "N/A"
211 170 7647-01-0 Hydrogen chloride 20 24-Hour Health "N/A"
212 171 74-90-8 Hydrogen cyanide 8 24-Hour Health "N/A"
213 172 7722-84-1 Hydrogen peroxide 30 24-Hour Health "N/A"
214 173 7783-06-5 Hydrogen sulphide 7 24-Hour Health "N/A"
215 173 7783-06-5 Hydrogen sulphide 13 10-Minute Odour "N/A"
216 174 7439-89-6 Iron (metallic) 4 24-Hour Health "N/A"
217 175 78-83-1 Isobutanol 4,600 24-Hour Health "N/A"
218 175 78-83-1 Isobutanol 2,340 10-Minute Odour "N/A"
219 176 110-19-0 Isobutyl acetate 1,660 10-Minute Odour "N/A"
220 177 67-63-0 Isopropanol (Isopropyl alcohol) 7,300 24-Hour Health "N/A"
221 178 108-21-4 Isopropyl acetate 2,000 10-Minute Odour "N/A"
222 179 98-82-8 Isopropyl benzene 400 24-Hour Health "N/A"
223 180 108-20-3 Isopropyl ether 110,000 24-Hour Health "N/A"
224 181 7439-92-1 Lead and lead compounds 0.2 30-Day Health As arithmetic mean of a 30-day period
225 181 7439-92-1 Lead and lead compounds 0.5 24-Hour Health "Converted from the 30-day AAQC to allow assessment of 24-hour air quality data"
226 182 58-89-9 Lindane (Hexachlorocyclohexane) 5 24-Hour Health "N/A"
227 183 7439-93-2 Lithium (other than hydrides) 20 24-Hour Health "N/A"
228 184 7580-67-8 Lithium hydrides 2.5 24-Hour Health "N/A"
229 185 1309-48-4 Magnesium oxide 120 24-Hour Particulate "N/A"
230 186 557-04-0 Magnesium stearate 35 24-Hour Health "N/A"
231 187 121-75-5 Malathion 120 24-Hour Particulate "N/A"
232 188 108-31-6 Maleic anhydride 30 24-Hour Health "N/A"
233 189 7439-96-5 Manganese and manganese compounds "0.1 (as PM2.5); 0.2 (as PM10); 0.4 (as SPM)" 24-Hour Health "Does not apply to MMT (CASRN 12108-13-3)"
234 190 " N/A" Mercaptans 13 10-Minute Odour "Mercaptan means any organic compound that contains a thiol group; mercaptans are expressed as methyl mercaptan and are calculated as follow: A = Σ ((B × 48) ÷ C), where A = the amount (or concentration) of total mercaptans, expressed as methyl mercaptan, B = the amount (or concentration) of each mercaptan, and C = the molecular weight of each mercaptan"
235 191 120-78-5 Mercaptobenzothiazole disulphide 120 24-Hour Particulate "N/A"
236 192 7439-97-6 Mercury (Hg) 2 24-Hour Health "N/A"
237 192 7439-97-6 Mercury (as Hg) – alkyl compounds 0.5 24-Hour Health "N/A"
238 193 108-62-3 Metaldehyde (Acetaldehyde tetramer) 120 24-Hour Particulate "N/A"
239 194 79-41-4 Methacrylic acid 2,000 24-Hour Odour To be updated
240 195 101-68-8 Methane diphenyl diisocyanate (MDI monomer) 0.7 24-Hour Health "N/A"
241 196 67-56-1 Methanol (Methyl alcohol) 4,000 24-Hour Health "N/A"
242 197 70657-70-4 Methoxy-1-propyl acetate, 2- 1,530 24-Hour Health "N/A"
243 198 72-43-5 Methoxychlor 120 24-Hour Particulate "N/A"
244 199 96-33-3 Methyl acrylate 4 1-Hour Odour To be updated
245 200 109-87-5 Methylal 6,200 24-Hour Health "N/A"
246 201 74-83-9 Methyl bromide 1,350 24-Hour Health "N/A"
247 202 74-87-3 Methyl chloride 320 24-Hour Health "N/A"
248 203 71-55-6 Methyl chloroform (1,1,1- Trichloroethane) 115,000 24-Hour Health "N/A"
249 204 12108-13-3 Methylcyclopentadienyl manganese tricarbonyl (MMT) 10 24-Hour Health "N/A"
250 205 101-14-4 Methylene-bis-2-chloroaniline, 4,4- 10 24-Hour Health "N/A"
251 206 75-09-2 Methylene chloride 44 Annual Health "N/A"
252 206 75-09-2 Methylene chloride 220 24-Hour Health "Converted from the annual AAQC to allow assessment of 24-hour air quality data"
253 207 101-77-9 Methylene dianiline 10 24-Hour Health "N/A"
254 208 75-11-6 Methylene iodide 65 24-Hour Health "N/A"
255 209 78-93-3 Methyl ethyl ketone (2- Butanone) 1,000 24-Hour Health "N/A"
256 210 1338-23-4 Methyl ethyl ketone peroxide 200 1-Hour Health "N/A"
257 210 1338-23-4 Methyl ethyl ketone peroxide 80 24-Hour Health "N/A"
258 211 110-12-3 Methyl-2-hexanone, 5- 630 10-Minute Odour "N/A"
259 212 624-83-9 Methyl isocyanate 1 24-Hour Health "N/A"
260 213 108-10-1 Methyl isobutyl ketone 1,200 24-Hour Odour To be updated
261 214 80-62-6 Methyl methacrylate 860 24-Hour Odour To be updated
262 215 872-50-4 Methyl-2-pyrrolidone, N- 40,000 1-Hour Health "N/A"
263 216 119-36-8 Methyl salicylate 100 24-Hour Health "N/A"
264 217 98-83-9 Methyl styrene, alpha 24,000 1-Hour Health "N/A"
265 218 1634-04-4 Methyl tert-butyl ether 7,000 24-Hour Health "N/A"
266 219 110-43-0 Methyl-n-amyl ketone 4,600 24-Hour Health "N/A"
267 220 22832-87-7 Miconazole nitrate 5 24-Hour Health "N/A"
268 221 " N/A" Mineral spirits 2,600 24-Hour Health "“Mineral spirits” is defined as a petroleum distillate mixture of C7 to C12 alkanes (paraffins) and cycloalkanes (naphthenes) where the mixture is in the range from 5 to 20 % aromatics by weight, is less than 0.1 % benzene by weight, has a boiling point in the range from 130 to 220 °C and has a flash point in the range from 21 to 60 °C"
269 222 7439-98-7 Molybdenum 120 24-Hour Particulate "N/A"
270 223 108-90-7 Monochlorobenzene 3,500 1-Hour Health "N/A"
271 223 108-90-7 Monochlorobenzene 4,500 10-Minute Odour "N/A"
272 224 74-89-5 Monomethyl amine 25 24-Hour Odour To be updated
273 225 91-20-3 Naphthalene 22.5 24-Hour Health "N/A"
274 225 91-20-3 Naphthalene 50 10-Minute Odour "N/A"
275 226 90-15-3 Naphthol, alpha- 100 24-Hour Health "N/A"
276 227 7440-02-0 Nickel and nickel compounds "0.02 (as PM10); 0.04 (as SPM)" Annual Health "Does not apply to nickel carbonyl (CASRN 13463-39-3)"
277 227 7440-02-0 Nickel and nickel compounds "0.1 (as PM10); 0.2 (as SPM)" 24-Hour Health "Converted from the annual AAQC to allow assessment of 24-hour air quality data"
278 228 13463-39-3 Nickel carbonyl 0.5 24-Hour Health "N/A"
279 229 7697-37-2 Nitric acid 35 24-Hour Corrosion "N/A"
280 230 139-13-9 Nitrilotriacetic acid 120 24-Hour Particulate "N/A"
281 231 10102-44-0 Nitrogen dioxide "200 (0.10 ppm)" 24-Hour Health "For monitored ambient air levels; for modelled data, estimates of total nitrogen oxides (NOx) should be compared to this AAQC unless sufficient information is available to reliably estimate maximum NO2 concentrations"
282 231 10102-44-0 Nitrogen dioxide "400 (0.20 ppm)" 1-Hour Health See note above
283 232 55-63-0 Nitroglycerin 3 24-Hour Health "N/A"
284 233 10024-97-2 Nitrous oxide 9,000 24-Hour Health "N/A"
285 234 111-65-9 Octane 61,800 10-minute Odour "N/A"
286 235 111-66-0 Octene, 1- 50,000 24-Hour Health "N/A"
287 236 112-80-1 Oleic acid 5 1-Hour Health "N/A"
288 237 144-62-7 Oxalic acid 25 24-Hour Health "N/A"
289 238 90438-79-2 Oxo-heptyl acetate 85 24-Hour Health "N/A"
290 239 88230-35-7 Oxo-hexyl acetate 85 24-Hour Health "N/A"
291 240 10028-15-6 Ozone "165 (0.080 ppm)" 1-Hour Health "N/A"
292 241 7647-10-1 Palladium - water soluble compounds 10 24-Hour Health "N/A"
293 242 1910-42-5 Paraquat dichloride – respirable 0.003 24-Hour Health "N/A"
294 242 1910-42-5 Paraquat dichloride – total 0.015 24-Hour Health "N/A"
295 243 " N/A" Particulate matter – PM2.5 (fine fraction) 28 (2015 target); 27 (2020 target) 24-Hour Health "CAAQS - it reflects a 3-year average of the annual 98th percentile of the daily 24-hr average concentrations; this value could also be used “as is” for comparison to the 24-hour measurement of air quality data"
296 243 " N/A" Particulate matter – PM2.5 (fine fraction) 10.0 (2015 target); 8.8 (2020 target) Annual Health "CAAQS - it reflects a 3-year average of the annual average concentrations; this value could also be used “as is” for comparison to a single annual averaging of air quality data"
297 243 " N/A" Particulate matter – PM10 (inhalable fraction) 50 24-Hour Health "This is an interim AAQC provided as a guide for decision making, with no conversion to other averaging times"
298 244 1406-05-9 Penicillin 0.1 24-Hour Health "N/A"
299 245 19624-22-7 Pentaborane 1 24-Hour Health "N/A"
300 246 87-86-5 Pentachlorophenol 20 24-Hour Health "N/A"
301 247 127-18-4 Perchloroethylene 360 24-Hour Health "N/A"
302 248 108-95-2 Phenol 30 24-Hour Health "N/A"
303 249 75-44-5 Phosgene 45 24-Hour Health "N/A"
304 250 7803-51-2 Phosphine 10 24-Hour Health "N/A"
305 251 7664-38-2 Phosphoric acid 7 24-Hour Health Express as total phosphoric acid calculated in accordance with the following formula: A = B + (C × 1.40), where A = the amount (or concentration) of total phosphoric acid, B = the amount (or concentration) of phosphoric acid, and C = the amount (or concentration) of phosphoric pentoxide
306 252 10025-87-3 Phosphorous oxychloride 12 24-Hour Health "N/A"
307 253 10026-13-8 Phosphorous pentachloride 10 24-Hour Health "N/A"
308 254 85-44-9 Phthalic anhydride 120 24-Hour Particulate "N/A"
309 255 2062-78-4 Pimozide 1 24-Hour Health "N/A"
310 256 7440-06-4 Platinum - water soluble compounds 0.2 24-Hour Health "N/A"
311 257 " N/A" Polybutene-1-sulfone 120 24-Hour Particulate "N/A"
312 258 1336-36-3 Polychlorinated biphenyls (PCBs) 0.035 Annual Health "N/A"
313 258 1336-36-3 Polychlorinated biphenyls (PCBs) 0.15 24-Hour Health "Converted from the annual AAQC to allow assessment of 24-hour air quality data"
314 259 9010-98-4 Polychloroprene 500 24-Hour Health "N/A"
315 260 9016-87-9 Polymeric methane diphenyl diisocyanate (PMDI) 0.7 24-Hour Health "N/A"
316 261 151-50-8 Potassium cyanide 120 24-Hour Particulate "N/A"
317 262 1310-58-3 Potassium hydroxide 14 24-Hour Corrosion "N/A"
318 263 7757-79-1 Potassium nitrate 120 24-Hour Particulate "N/A"
319 264 71-23-8 Propanol, n- (Propyl alcohol) 16,000 24-Hour Health "N/A"
320 265 123-38-6 Propionaldehyde 10 10-minute Odour "N/A"
321 266 79-09-4 Propionic acid 100 1-Hour Odour To be updated
322 267 123-62-6 Propionic anhydride (as Propionic acid) 100 1-Hour Odour To be updated
323 268 109-60-4 Propyl acetate, n- 6,600 24-Hour Health "N/A"
324 269 115-07-1 Propylene 4,000 24-Hour Health "N/A"
325 270 78-87-5 Propylene dichloride 2,400 24-Hour Odour To be updated
326 271 57-55-6 Propylene glycol 120 24-Hour Particulate "N/A"
327 272 107-98-2 Propylene glycol methyl ether 121,000 10-minute Odour "N/A"
328 273 108-65-6 Propylene glycol monomethyl ether acetate 5,000 24-Hour Odour To be updated
329 274 75-56-9 Propylene oxide 0.3 Annual Health "N/A"
330 274 75-56-9 Propylene oxide 1.5 24-Hour Health "Converted from the annual AAQC to allow assessment of 24-hour air quality data"
331 275 110-86-1 Pyridine 150 24-Hour Health "N/A"
332 275 110-86-1 Pyridine 80 10-minute Odour "N/A"
333 276 106-51-4 Quinone 15 24-Hour Health "N/A"
334 277 7782-49-2 Selenium 10 24-Hour Health "N/A"
335 278 7803-62-5 Silane 150 24-Hour Health "N/A"
336 279 14464-46-1 "Silica - respirable (<10 µm diameter), cristabolite" 5 24-Hour Health "N/A"
337 280 14808-60-7 "Silica - respirable (<10 µm diameter), quartz" 5 24-Hour Health "N/A"
338 281 15468-32-3 "Silica - respirable (<10 µm diameter), tridymite" 5 24-Hour Health "N/A"
339 282 7440-22-4 Silver 1 24-Hour Health "N/A"
340 283 7631-90-5 Sodium bisulphite 120 24-Hour Health & Particulate "N/A"
341 284 7775-09-9 Sodium chlorate 6 24-Hour Health "N/A"
342 285 7758-19-2 Sodium chlorite 20 24-Hour Health "N/A"
343 286 143-33-9 Sodium cyanide 120 24-Hour Particulate "N/A"
344 287 1310-73-2 Sodium hydroxide 10 24-Hour Corrosion "N/A"
345 288 7631-99-4 Sodium nitrate 7,000 24-Hour Health "N/A"
346 289 7772-99-8 "Stannous chloride (as Sn)" 10 24-Hour Health "N/A"
347 290 7440-24-6 Strontium 120 24-Hour Particulate "N/A"
348 291 1633-05-2 Strontium carbonate 120 24-Hour Particulate "N/A"
349 292 18480-07-4 Strontium hydroxide 120 24-Hour Particulate "N/A"
350 293 1314-11-0 Strontium oxide 120 24-Hour Particulate "N/A"
351 294 100-42-5 Styrene 400 24-Hour Health "N/A"
352 295 5329-14-6 Sulfamic acid 120 24-Hour Particulate "N/A"
353 296 7446-09-5 Sulphur dioxide "67 ppb" 10-Minute Health "AAQC for implementation; where 1 ppb of sulphur dioxide is equal to 2.66 μg/m3 (at 20.0oC and 1 atmosphere), rounded"
354 296 7446-09-5 Sulphur dioxide "40 ppb" 1-Hour Health "Converted from the 10-minute AAQC to allow assessment of 1-hour air quality data for implementation; where 1 ppb of sulphur dioxide is equal to 2.66 μg/m3 (at 20.0oC and 1 atmosphere), rounded"
355 296 7446-09-5 Sulphur dioxide "4 ppb" Annual Vegetation "AAQC for implementation; where 1 ppb of sulphur dioxide is equal to 2.66 μg/m3 (at 20.0oC and 1 atmosphere), rounded"
356 297 2551-62-4 Sulphur hexafluoride 600,000 24-Hour Health "N/A"
357 298 7664-93-9 Sulphuric acid 5 24-Hour Health "N/A"
358 299 " N/A" Suspended particulate matter 60 Annual Visibility As the geometric mean of daily measurements over a year
359 299 " N/A" Suspended particulate matter 120 24-Hour Visibility "N/A"
360 300 14807-96-6 Talc - fibrous 2 24-Hour Health "N/A"
361 301 13494-80-9 Tellurium (except hydrogen telluride) 10 24-Hour Health "N/A"
362 302 4559-86-8 Tetrabutylurea 10 24-Hour Health "N/A"
363 303 109-99-9 Tetrahydrofuran 93,000 24-Hour Odour To be updated
364 304 137-26-8 Tetramethyl thiuram disulphide 10 24-Hour Health "N/A"
365 305 62-56-6 Thiourea 20 24-Hour Health "N/A"
366 306 7440-31-5 Tin 10 24-Hour Health "N/A"
367 307 7440-32-6 Titanium 120 24-Hour Particulate "N/A"
368 308 13463-67-7 Titanium dioxide 34 24-Hour Health "N/A"
369 309 35711-34-3 Tolmetin sodium 5 24-Hour Health "N/A"
370 310 108-88-3 Toluene 2,000 24-Hour Odour To be updated
371 311 584-84-9 Toluene di-isocyanate, 2,4- 0.2 24-Hour Health "N/A"
372 312 26471-62-5 Toluene di-isocyanate, 2,4- and 2,6- (mixed isomers) 0.2 24-Hour Health "N/A"
373 313 " N/A" "Total reduced sulphur (TRS) compounds (for facilities that are part of the class identified by NAICS code 3221 (Pulp, Paper and Paperboard Mills))" 14 24-Hour Health "Applies to a mixture of reduced sulphur compounds, primarily dimethyl disulphide, dimethyl sulphide, hydrogen sulphide and mercaptans - calculated as the sum of the concentrations of the reduced sulphur compounds; if monitoring a specific reduced sulphur compound, then the AAQC for that specific compound applies"
374 313 " N/A" "Total reduced sulphur (TRS) compounds (for facilities that are part of the class identified by NAICS code 3221 (Pulp, Paper and Paperboard Mills))" 13 10-minute Odour "See TRS note above for 24-hour AAQC"
375 313 " N/A" Total reduced sulphur (TRS) compounds (for other facilities) 7 24-Hour Health "See TRS note above for 24-hour AAQC for Pulp, Paper and Paperboard Mills"
376 313 " N/A" Total reduced sulphur (TRS) compounds (for other facilities) 13 10-minute Odour "See TRS note above for 24-hour AAQC for Pulp, Paper and Paperboard Mills"
377 314 56-35-9 Tributyltin oxide 0.14 24-Hour Health "N/A"
378 315 120-82-1 Trichlorobenzene, 1,2,4- 400 24-Hour Health "N/A"
379 316 79-01-6 Trichloroethylene (TCE) 2.3 Annual Health "N/A"
380 316 79-01-6 Trichloroethylene (TCE) 12 24-Hour Health "Converted from the annual AAQC to allow assessment of 24-hour air quality data"
381 317 79-01-6 Trichlorofluoromethane 6,000 24-Hour Health "See O. Reg. 463/10 for Ozone Depleting Substances and Other Halocarbons for further restrictions on these, and several other ozone-depleting substances"
382 318 76-05-1 Trifluoroacetic acid 15 24-Hour Health "N/A"
383 319 76-13-1 Trifluorotrichloroethane 800,000 24-Hour Health "See O. Reg. 463/10 for Ozone Depleting Substances and Other Halocarbons for further restrictions on these, and several other ozone-depleting substances"
384 320 75-50-3 Trimethyl amine 0.5 1-Hour Odour To be updated
385 321 526-73-8 Trimethylbenzene, 1,2,3- (individual isomer or Trimethylbenzene mixture) 220 24-Hour Health "N/A"
386 322 95-63-6 Trimethylbenzene, 1,2,4- (individual isomer or trimethylbenzene mixture) 220 24-Hour Health "N/A"
387 323 108-67-8 Trimethylbenzene, 1,3,5- (individual isomer or trimethylbenzene mixture) 220 24-Hour Health "N/A"
388 324 77-99-6 Trimethylol propane 1,250 24-Hour Health "N/A"
389 325 " N/A" Tripropyltin methacrylate 1 24-Hour Health "N/A"
390 326 7440-61-1 "Uranium and uranium compounds (U in PM10)" 0.03 Annual Health "N/A"
391 326 7440-61-1 "Uranium and uranium compounds (U in SPM)" 0.06 Annual Health "N/A"
392 326 7440-61-1 Uranium and uranium compounds "0.15 (as PM10); 0.3 (as SPM)" 24-Hour Health "Converted from the annual AAQC to allow assessment of 24-hour air quality data"
393 327 7440-62-2 Vanadium 2 24-Hour Health "N/A"
394 328 75-01-4 Vinyl chloride 0.2 Annual Health "N/A"
395 329 75-01-4 Vinyl chloride 1 24-Hour Health "Converted from the annual AAQC to allow assessment of 24-hour air quality data"
396 330 75-35-4 Vinylidene chloride (1,1- Dichloroethene) 10 24-Hour Health "N/A"
397 331 81-81-2 Warfarin 10 24-Hour Health "N/A"
398 332 1330-20-7 Xylenes 730 24-Hour Health "Applies to the following isomers, individually or as a mixture: o-Xylene (CASRN 95-47-6), p-Xylene (CASRN 106-42-3), and m-Xylene (CASRN 108-38-3)"
399 332 1330-20-7 Xylenes 3,000 10-minute Odour "Applies to the following isomers, individually or as a mixture: o-Xylene (CASRN 95-47-6), p-Xylene (CASRN 106-42-3), and m-Xylene (CASRN 108-38-3)"
400 333 7440-66-6 Zinc 120 24-Hour Particulate "N/A"
401 334 7646-85-7 Zinc chloride 10 1-Hour Health "N/A"
402 335 557-05-1 Zinc stearate 35 24-Hour Health "N/A"