Wis. Admin. Code Department of Natural Resources NR 445.07

Current through October 28, 2024

Section NR 445.07 - Emission thresholds, standards, control requirements and exemptions

(1) ALL SOURCES OF HAZARDOUS AIR CONTAMINANTS. Except as provided in sub. (5), the following requirements apply:

(a) No owner or operator of a source may cause, allow or permit emissions of a hazardous air contaminant listed in Table A in such quantity or concentration or for such duration as to cause an ambient air concentration of the contaminant off the source property that exceeds the concentration in column (g) of Table A for the contaminant.

Note: Owners and operators of facilities emitting less than 3 tons of volatile organic compounds and 5 tons particulate matter on an annual basis, or who engage in limited or no manufacturing activities, should refer to s. NR 445.11 prior to determining applicable requirements under this section.

(b) The owner or operator of a source may request approval of an alternative to the emission limitation in par. (a). The alternative emission limitation is 10% of the threshold limit value - time weighted average established by the American Conference of Governmental Industrial Hygienists, in the Threshold Limit Values for Chemical Substances and Physical Agents and Biological Exposure Indices for 2000, incorporated by reference in s. NR 484.11(2) (c), for any contaminant with a 24-hour averaging period in column (h) of Table A. The department may approve the alternative emission limitation if both of the following criteria are met:

1. The hazardous air contaminant is emitted no more than 5 days in any consecutive 30-day period.

2. The department determines, after consultation with the department of health services, that the alternative emission limitation will not pose a threat to public health or welfare.

(c) The owner or operator of a source that emits a hazardous air contaminant for which a control requirement is identified in column (i) of Table A in a quantity greater than the amount listed in column (c), (d), (e) or (f) of Table A for the contaminant shall control emissions of the contaminant to the level identified in column (i) of the table. The control requirement shall be applied according to the procedure in s. NR 445.08(2) (f).

(2) SOURCES OF HAZARDOUS AIR CONTAMINANTS FROM THE MANUFACTURE OR TREATMENT OF PESTICIDES, RODENTICIDES, INSECTICIDES, HERBICIDES OR FUNGICIDES. Except as provided in sub. (5) (c) and (d), in addition to the requirements of sub. (1), the owner or operator of a source that manufactures or treats pesticides, rodenticides, insecticides, herbicides or fungicides may not cause, allow or permit emissions of a hazardous air contaminant listed in Table B in a quantity or concentration or for a duration as to cause an ambient air concentration off the source property that exceeds the concentration in column (g) of Table B for the contaminant. For any hazardous air contaminant for which a control requirement is identified in column (i) of Table B that is emitted in an amount greater than the amount listed in column (c), (d), (e) or (f) of Table B for the contaminant, the owner or operator shall control emissions of the contaminant to the level identified in column (i) of the table. The control requirement shall be applied according to the procedure in s. NR 445.08(2) (f).

(3) SOURCES OF HAZARDOUS AIR CONTAMINANTS FROM THE MANUFACTURE OR TREATMENT OF PHARMACEUTICALS. Except as provided in sub. (5) (c) and (d), in addition to meeting the requirements of sub. (1), the owner or operator of a source that manufactures or treats pharmaceuticals and that emits a hazardous air contaminant for which a control requirement is identified in column (i) of Table C in an amount greater than the amount listed in column (c), (d), (e) or (f) of Table C for the contaminant shall control emissions of the contaminant to the level identified in column (i) of the table. The control requirement shall be applied according to the procedure in s. NR 445.08(2) (f).

(4) MUNICIPAL SOLID WASTE AND INFECTIOUS WASTE INCINERATORS.

(a) Except as provided for in par. (b), the owner or operator of a source that combusts municipal solid waste, as defined in s. NR 500.03(150), or infectious waste shall comply with sub. (1), and shall control emissions of hazardous air contaminants having a control requirement identified in column (i) in Table A, B or C to a level that is the lowest achievable emission rate. The control requirement shall be applied according to the procedure in s. NR 445.08(2) (f).

(b) A source that combusts no infectious waste and that combusts no municipal solid waste other than refuse derived fuel in a boiler is not subject to this subsection unless 50% or more of the boiler's heat input is obtained from the refuse derived fuel.

(5) EXEMPT EMISSIONS. Emissions from all of the following are exempt from the requirements of sub. (1) and emissions identified in pars. (c) and (d) are also exempt from the requirements of subs. (2) and (3):

(a) The combustion of group 1 virgin fossil fuels.

(b) The combustion of group 2 virgin fossil fuels vented from a stack that has downwash minimization stack height or a height approved by the department.

(c) A laboratory.

(d)

1. Indoor fugitive sources that emit any hazardous air contaminant with a concentration having a 1-hour or 24-hour average time period in column (h) in Table A, B or C.

2. Indoor fugitive sources that emit any hazardous air contaminant with a control requirement in column (i) or a concentration having an annual time period in column (h) in Table A, B or C that meet all of the following requirements:

a. The contaminant is exhausted to the ambient air through general building ventilation.

b. The contaminant has a threshold limit value established by the American Conference of Governmental Industrial Hygienists, in the Threshold Limit Values for Chemical Substances and Physical Agents and Biological Exposure Indices for 2000, incorporated by reference in s. NR 484.11(2) (c).

c. The owner or operator of the source demonstrates to the department that the source is in compliance with applicable occupational safety and health administration requirements.

(e) Gasoline dispensing for any hazardous air contaminant with a control requirement in column (i) of Table A provided that one of the following applies:

1. The gasoline dispensing facility meets the requirements of s. NR 420.04(3) (b) to (i) and dispenses less than 2 million gallons of gasoline in any 12 consecutive month period.

2. The gasoline dispensing facility dispenses less than 1.25 million gallons of gasoline in any 12 consecutive month period.

(f) Combustion of wood in combustion units that operate with good combustion technology and that were constructed or last modified prior to October 1, 1988 for any hazardous air contaminant with a control requirement in column (i) of Table A. Good combustion technology means technology that provides for a minimization of hazardous air contaminants with control requirements in column (i). Good combustion technology will be determined on a case-by-case basis by the department, taking into account the type of fuel to be burned, the economic and environmental impacts of the combustion, and other costs related to the source. Good combustion technology may include consideration of factors such as temperature, residence time, carbon monoxide emissions, excess oxygen, and turbulence.

Note: See department draft memo dated July 7, 1999, Wood Combustion and Compliance with Chapter NR 445, for further information regarding the use of this exemption. The draft memo may obtained by contacting the Compliance and Enforcement Section of the Bureau of Air Management at 608-266-7718.

(6) USE REQUIREMENTS FOR TABLES A, B AND C.

(a) The emission thresholds in columns (c) to (f) in Tables A, B and C for any hazardous air contaminant may only be used if emissions from the source are vented to the atmosphere in a manner that meets both of the following:

1. The emissions are from an unobstructed discharge point.

Note: Valves designed to open and close at the point of discharge are not considered to be obstructions if they are open at time of emission.

2. The emissions are from a stack that is within 10 degrees of vertical.

(b) For purposes of calculating non-exempt, potential to emit emissions for comparison with the threshold rates in column (c), (d), (e) or (f) in the tables the owner or operator of a source shall do all of the following:

1. Combine non-exempt, potential to emit emissions for each contaminant for all stacks within each of the 4 stack categories.

2. Compare each group of non-exempt, potential to emit emissions against the respective threshold found in column (c), (d), (e) or (f) in the table.

(c) For any group of non-exempt, potential to emit emissions that exceeds the respective threshold in column (c), (d), (e) or (f), consider all non-exempt, potential emissions from the source in determining compliance with the applicable standard or control requirement.

Hazardous Air Contaminant	CAS Number	Thresholds for Emission Points1 (expressed as lbs/hr or lbs/yr)				Ambient Air Standard (per time period in column (h) expressed as micrograms per cubic meter)	Time Period for Standard and Threshold	Control Requirement
		Emissions from Stacks <25 ft	Emissions from Stacks 25 to <40 ft	Emissions from Stacks 40 to <75 ft	Emissions from Stacks >=75 ft
(a)	(b)	(c)	(d)	(e)	(f)	(g)	(h)	(i)
1.	Acetaldehyde	75-07-0	3.36	10.7	20.6	55.3	4,504	1 Hr	N/A
		808	3,318	7,900	27,845	N/A	Annual	BACT
2.	Acetic acid	64-19-7	1.32	5.12	10.3	39.8	589	24 Hr Avg	N/A
3.	Acetic anhydride	108-24-7	1.12	4.36	8.79	33.9	501	24 Hr Avg	N/A
4.	Acetonitrile	75-05-8	3.61	14	28.3	109	1,612	24 Hr Avg	N/A
5.	Acetophenone	98-86-2	2.64	10.3	20.7	79.7	1,179	24 Hr Avg	N/A
6.	Acrolein	107-02-8	0.0171	0.0545	0.105	0.281	22.9	1 Hr	N/A
7.	Acrylamide	79-06-1	0.00161	0.00626	0.0126	0.0486	0.72	24 Hr Avg	N/A
		1.37	5.62	13.4	47.1	N/A	Annual	BACT
8.	Acrylic acid	79-10-7	178	730	1,738	6,126	1	Annual	N/A
		0.317	1.23	2.48	9.56	141	24 Hr Avg	N/A
9.	Acrylonitrile	107-13-1	26.1	107	256	901	N/A	Annual	BACT
10.	Adipic acid	124-04-9	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
11.	Adiponitrile	111-69-3	0.475	1.85	3.72	14.3	212	24 Hr Avg	N/A
12.	Aflatoxins	1402-68-2	2.43	10	23.8	83.9	N/A	Annual	LAER
13.	Allyl alcohol	107-18-6	0.0638	0.248	0.5	1.93	28.5	24 Hr Avg	N/A
14.	Allyl chloride	107-05-1	0.168	0.653	1.32	5.07	75.1	24 Hr Avg	N/A
15.	Allyl glycidyl ether	106-92-3	0.251	0.974	1.97	7.57	112	24 Hr Avg	N/A
16.	Aluminum alkyls and soluble salts, as Al	7429-90-5	0.107	0.417	0.842	3.24	48	24 Hr Avg	N/A
17.	Aluminum pyro powders, as Al	7429-90-5	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
18.	o-Aminoazotoluene (2-Aminoazotoluene)	97-56-3	1.62	6.64	15.8	55.7	N/A	Annual	BACT
19.	4-Aminobiphenyl	92-67-1	0.296	1.22	2.9	10.2	N/A	Annual	LAER
20.	Ammonia	7664-41-7	17,769	73,000	173,810	612,587	100	Annual	N/A
		0.935	3.63	7.33	28.2	418	24 Hr Avg	N/A
21.	Ammonium perfluoroocta-noate	3825-26-1	0.000537	0.00209	0.00421	0.0162	0.24	24 Hr Avg	N/A
22.	Aniline	62-53-3	0.409	1.59	3.21	12.4	183	24 Hr Avg	N/A
23.	o-Anisidine and o-anisidine hydrochloride (mixtures and isomers)	29191-52-4	44.4 0.0271	183 0.105	435 0.212	1,531 0.817	N/A 12.1	Annual 24 Hr Avg	BACT N/A
24.	Antimony and compounds, as Sb	7440-36-0	0.0269	0.104	0.211	0.811	12	24 Hr Avg	N/A
25.	Antimony trioxide	1309-64-4	35.5	146	348	1,225	0.2	Annual	N/A
26.	Arsenic, elemental and inorganic compounds, as As	7440-38-2	0.413	1.7	4.04	14.2	N/A	Annual	LAER
27.	Arsine	7784-42-1	0.00856	0.0333	0.0671	0.258	3.83	24 Hr Avg	N/A
		8.88	36.5	86.9	306	0.05	Annual	N/A
28.	Asbestos, all forms	1332-21-4	2.43	10	23.8	83.9	N/A	Annual	LAER
29.	Aziridine (Ethylenimine)	151-56-4	0.0473	0.184	0.371	1.43	21.1	24 Hr Avg	N/A
30.	Barium, soluble compounds, as Ba	7440-39-3	0.0269	0.104	0.211	0.811	12	24 Hr Avg	N/A
31.	Benz(a)anthracene	56-55-3	16.2	66.4	158	557	N/A	Annual	BACT
32.	Benzene	71-43-2	228	936	2,228	7,854	N/A	Annual	LAER
33.	Benzidine	92-87-5	0.0265	0.109	0.259	0.914	N/A	Annual	LAER
34.	Benzo(b)fluoranthene	205-99-2	2.43	10	23.8	83.9	N/A	Annual	BACT
35.	Benzo(j)fluoranthene	205-82-3	2.43	10	23.8	83.9	N/A	Annual	BACT
36.	Benzo(k)fluoranthene	207-08-9	2.43	10	23.8	83.9	N/A	Annual	BACT
37.	Benzo(a)pyrene	50-32-8	1.62	6.64	15.8	55.7	N/A	Annual	BACT
38.	Benzotrichloride	98-07-7	2.43	10	23.8	83.9	N/A	Annual	BACT
39.	Benzoyl chloride	98-88-4	0.215	0.684	1.31	3.53	287	1 Hr	N/A
40.	Benzoyl peroxide	94-36-0	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
41.	Benzyl acetate	140-11-4	3.3	12.8	25.9	99.6	1,474	24 Hr Avg	N/A
42.	Benzyl chloride	100-44-7	0.278	1.08	2.18	8.4	124	24 Hr Avg	N/A
43.	Beryllium and beryllium compounds, as Be	7440-41-7	0.74 3.55	3.04 14.6	7.24 34.8	25.5 123	N/A 0.02	Annual Annual	BACT N/A
44.	Biphenyl	92-52-4	0.0678	0.263	0.531	2.05	30.3	24 Hr Avg	N/A
45.	Bis(2-chloroethyl)ether (Dichloroethyl ether)	111-44-4	1.57	6.1	12.3	47.4	702	24 Hr Avg	N/A
46.	Bis(2-dimethylaminoethyl) ether (DMAEE)	3033-62-3	0.0176	0.0684	0.138	0.531	7.87	24 Hr Avg	N/A
47.	Bis(2-ethyl hexyl) phthalate (Diethyl hexyl phthalate)	117-81-7	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
48.	Bismuth telluride, as Bi2Te3: Se-doped	1304-82-1	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
49.	Borates, tetra, sodium salts, decahydrate	1303-96-4	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
50.	Borates, tetra, sodium salts, pentahydrate	1303-96-4	0.0537	0.209	0.421	1.62	24	24 Hr Avg	N/A
51.	Boron tribromide	10294-33-4	0.765	2.44	4.69	12.6	1,025	1 Hr	N/A
52.	Boron trifluoride	7637-07-2	0.207	0.66	1.27	3.4	277	1 Hr	N/A
53.	Bromine	7726-95-6	0.0351	0.136	0.275	1.06	15.7	24 Hr Avg	N/A
54.	Bromine pentafluoride	7789-30-2	0.0384	0.149	0.301	1.16	17.2	24 Hr Avg	N/A
55.	Bromodichloromethane	75-27-4	48	197	470	1,656	N/A	Annual	BACT
56.	Bromodiphenyls (Polybro-minated biphenyls; PBBs)	59536-65-1	0.207	0.849	2.02	7.12	N/A	Annual	BACT
57.	Bromoform	75-25-2	0.278	1.08	2.18	8.38	124	24 Hr Avg	N/A
58.	1,3-Butadiene	106-99-0	6.35	26.1	62.1	219	N/A	Annual	BACT
59.	2-Butoxyethanol (Ethylene glycol monobutyl ether; EGBE; Butyl Cellosolve)	111-76-2	2,309,939 5.19	9,490,000 20.2	22,595,238 40.7	79,636,364 157	13,000 2,320	Annual 24 Hr Avg	N/A
60.	n-Butyl acrylate	141-32-2	0.563	2.19	4.41	17	252	24 Hr Avg	N/A
61.	n-Butylamine	109-73-9	1.12	3.56	6.84	18.4	1,496	1 Hr	N/A
62.	n-butyl alcohol (n-Butanol)	71-36-3	11.3	36	69.3	186	15,157	1 Hr	N/A
63.	Butylated hydroxyanisole (BHA)	25013-16-5	31,173	128,070	304,929	1,074,715	N/A	Annual	BACT
64.	Butyl Cellosolve (2-But-oxyethanol; ethylene glycol monobutyl ether; EGBE)	111-76-2	2,309,939 5.19	9,490,000 20.2	22,595,238 40.7	79,636,364 157	13,000 2,320	Annual 24 Hr Avg	N/A
65.	tert-Butyl chromate, as Cr	1189-85-1	0.00747	0.0238	0.0457	0.123	10	1 Hr	N/A
		0.148	0.608	1.45	5.1	N/A	Annual	LAER
66.	n-Butyl glycidyl ether (BGE)	2426-08-6	7.15	27.8	56.1	216	3,195	24 Hr Avg	N/A
67.	n-Butyl lactate	138-22-7	1.61	6.24	12.6	48.5	717	24 Hr Avg	N/A
68.	o-sec-Butylphenol	89-72-5	1.65	6.41	12.9	49.8	737	24 Hr Avg	N/A
69.	p-tert-Butyltoluene	98-51-1	0.326	1.26	2.55	9.83	145	24 Hr Avg	N/A
70.	C.I. Basic Red 9 monohy-drochloride	569-61-9	25	103	245	863	N/A	Annual	BACT
71.	Cadmium and cadmium compounds, as Cd	7440-43-9	0.987	4.06	9.66	34	N/A	Annual	LAER
72.	Calcium cyanamide	156-62-7	0.0269	0.104	0.211	0.811	12	24 Hr Avg	N/A
73.	Calcium hydroxide	1305-62-0	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
74.	Calcium oxide	1305-78-8	0.107	0.417	0.842	3.24	48	24 Hr Avg	N/A
75.	Camphor (synthetic)	76-22-2	0.669	2.6	5.24	20.2	299	24 Hr Avg	N/A
76.	Caprolactam (aerosol and vapor)	105-60-2	1.24	4.83	9.74	37.5	555	24 Hr Avg	N/A
77.	Carbon black	1333-86-4	0.188	0.73	1.47	5.68	84	24 Hr Avg	N/A
78.	Carbon disulfide	75-15-0	124,381	511,000	1,216,667	4,288,112	700	Annual	N/A
		1.67	6.5	13.1	50.5	747	24 Hr Avg	N/A
79.	Carbon tetrabromide	558-13-4	0.0729	0.283	0.571	2.2	32.6	24 Hr Avg	N/A
80.	Carbon tetrachloride	56-23-5	118	487	1,159	4,084	N/A	Annual	BACT
81.	Carbonyl fluoride	353-50-4	0.29	1.13	2.27	8.76	130	24 Hr Avg	N/A
82.	Catechol (Pyrocatechol)	120-80-9	1.21	4.7	9.48	36.5	540	24 Hr Avg	N/A
83.	Cellosolve (2-Ethoxyetha-nol; EGEE)	110-80-5	0.99 35,538	3.85 146,000	7.76 347,619	29.9 1,225,175	442 200	24 Hr Avg Annual	N/A N/A
84.	Cellosolve acetate (2-Eth-oxyethyl acetate; EGEEA)	111-15-9	1.45	5.64	11.4	43.8	649	24 Hr Avg	N/A
85.	Refractory ceramic fibers (respirable size)	2.43	10	23.8	83.9	N/A	Annual	BACT
86.	Cesium hydroxide	21351-79-1	0.107	0.417	0.842	3.24	48	24 Hr Avg	N/A
87.	Chlordecone (Kepone)	143-50-0	0.386	1.59	3.78	13.3	N/A	Annual	BACT
88.	Chlorendic acid	115-28-6	68.3	281	668	2,356	N/A	Annual	BACT
89.	Chlorinated diphenyl oxide	55720-99-5	0.0269	0.104	0.211	0.811	12	24 Hr Avg	N/A
90.	Chlorinated paraffins (C12; 60% chlorine)	108171-26-2	71.1	292	695	2,450	N/A	Annual	BACT
91.	Chlorine	7782-50-5	0.0779	0.303	0.611	2.35	34.8	24 Hr Avg	N/A
92.	Chlorine dioxide	10049-04-4	0.0148	0.0576	0.116	0.447	6.62	24 Hr Avg	N/A
93.	Chlorine trifluoride	7790-91-2	0.0282	0.0899	0.173	0.464	37.8	1 Hr	N/A
94.	2-Chloroacetophenone	532-27-4	0.017	0.066	0.133	0.513	7.59	24 Hr Avg	N/A
95.	Chlorobenzene (Mono-chlorobenzene)	108-90-7	2.47	9.61	19.4	74.7	1,105	24 Hr Avg	N/A
96.	o- Chlorobenzylidene mal-ononitrile	2698-41-1	0.0288	0.0917	0.176	0.473	38.6	1 Hr	N/A
97.	1-Chloro-1,1-difluoro-ethane (Hydrochlorofluoro-carbon-142b; HCFC-142b; R-142b)	75-68-3	8,884,381	36,500,000	86,904,762	306,293,706	50,000	Annual	N/A
98.	Chlorodifluoromethane (Hydrochlorofluorocar- bon-22; HCFC-22; R-22)	75-45-6	8,884,381	36,500,000	86,904,762	306,293,706	50,000	Annual	N/A
99.	Chlorodiphenyls (Polychlo-rinated biphenyls; PCBs)	1336-36-3	0.0269 0.1	0.104 0.1	0.211 0.1	0.811 0.1	12 N/A	24 Hr Avg Annual	N/A BACT
100.	1-Chloro-2,3-epoxypro-pane (Epichlorohydrin)	106-89-8	0.102 178	0.395 730	0.797 1,738	3.07 6,126	45.4 1	24 Hr Avg Annual	N/A N/A
		1,481	6,083	14,484	51,049	N/A	Annual	BACT
101.	Chloroethane (Ethyl chloride)	75-00-3	14.2 1,776,876	55.1 7,300,000	111 17,380,952	428 61,258,741	6,333 10,000	24 Hr Avg Annual	N/A N/A
102.	Chloroform	67-66-3	2.62	10.2	20.6	79.2	1,172	24 Hr Avg	N/A
		77.3	317	756	2,663	N/A	Annual	BACT
103.	Chloromethane (Methyl chloride)	74-87-3	5.55	21.5	43.5	167	2,478	24 Hr Avg	N/A
104.	p-Chloroprene	126-99-8	2.43	10	23.8	83.9	N/A	Annual	LAER
		1.95	7.56	15.2	58.7	869	24 Hr Avg	N/A
105.	o-Chlorostyrene	2039-87-4	15.2	59.2	119	460	6,802	24 Hr Avg	N/A
106.	o-Chlorotoluene	95-49-8	13.9	54	109	420	6,213	24 Hr Avg	N/A
107.	Chromium (metal) and compounds other than chromium (VI), as Cr	7440-47-3	0.0269	0.104	0.211	0.811	12	24 Hr Avg	N/A
108.	Chromium (VI): chromic acid mists and dissolved Cr (VI) aerosols, as Cr	7440-47-3	1.42 0.148	5.84 0.608	13.9 1.45	49 5.1	0.008 N/A	Annual Annual	N/A LAER
109.	Chromium (VI): compounds and particulates, as Cr	7440-47-3	17.8 0.148	73 0.608	174 1.45	613 5.1	0.1 N/A	Annual Annual	N/A LAER
110.	Chromyl chloride, as Cr	14977-61-8	0.148	0.608	1.45	5.1	N/A	Annual	LAER
			0.00851	0.0331	0.0667	0.257	3.8	24 Hr Avg	N/A
111.	Cobalt, elemental, and inorganic compounds, as Co	7440-48-4	0.00107	0.00417	0.00842	0.0324	0.48	24 Hr Avg	N/A
112.	Coke oven emissions	2.87	11.8	28	98.8	N/A	Annual	LAER
113.	Copper and compounds, dusts and mists, as Cu	7440-50-8	0.0537	0.209	0.421	1.62	24	24 Hr Avg	N/A
114.	Copper and compounds, fume, as Cu	7440-50-8	0.0107	0.0417	0.0842	0.324	4.8	24 Hr Avg	N/A
115.	p-Cresidine	120-71-8	41.3	170	404	1,425	N/A	Annual	BACT
116.	Cresol (mixtures and isomers)	1319-77-3	1.19	4.62	9.31	35.9	531	24 Hr Avg	N/A
117.	Crotonaldehyde	4170-30-3	0.0642	0.205	0.393	1.06	86	1 Hr	N/A
118.	Cumene (Isopropyl benzene)	98-82-8	13.2	51.3	103	399	5,899	24 Hr Avg	N/A
119.	Cyanamide	420-04-2	0.107	0.417	0.842	3.24	48	24 Hr Avg	N/A
120.	Cyanides, (inorganics), as CN	143-33-9	0.373	1.19	2.29	6.13	500	1 Hr	N/A
121.	Cyanogen	460-19-5	1.14	4.44	8.96	34.5	511	24 Hr Avg	N/A
122.	Cyanogen chloride	506-77-4	0.0563	0.179	0.345	0.926	75.4	1 Hr	N/A
123.	Cyclohexanol	108-93-0	11	42.7	86.2	332	4,916	24 Hr Avg	N/A
124.	Cyclohexanone	108-94-1	5.17	20.1	40.5	156	2,311	24 Hr Avg	N/A
125.	Cyclohexylamine	108-91-8	2.18	8.46	17.1	65.8	973	24 Hr Avg	N/A
126.	Cyclonite	121-82-4	0.0269	0.104	0.211	0.811	12	24 Hr Avg	N/A
127.	Cyclopentadiene	542-92-7	10.9	42.3	85.4	329	4,866	24 Hr Avg	N/A
128.	Danthron (1,8-Dihydroxy-anthroquinone)	117-10-2	80.8	332	790	2,784	N/A	Annual	BACT
129.	DBCP (1,2-Dibromo-3-chloropr-opane)	96-12-8	0.935	3.84	9.15	32.2	N/A	Annual	BACT
130.	DDT (Dichlorodiphenyltri-chloroethane)	50-29-3	0.0537 18.3	0.209 75.3	0.421 179	1.62 632	24 N/A	24 Hr Avg Annual	N/A BACT
131.	Diacetone alcohol	123-42-2	12.8	49.6	100	385	5,701	24 Hr Avg	N/A
132.	2,4-Diaminoanisole sulfate	39156-41-7	480	1,973	4,698	16,556	N/A	Annual	BACT
133.	2,4-Diaminotoluene (Tolu-ene-2,4-diamine)	95-80-7	1.62	6.64	15.8	55.7	N/A	Annual	BACT
134.	Diazomethane	334-88-3	0.0185	0.0718	0.145	0.558	8.25	24 Hr Avg	N/A
135.	Dibenz(a,h)acridine	226-36-8	16.2	66.4	158	557	N/A	Annual	BACT
136.	Dibenz(a,j)acridine	224-42-0	16.2	66.4	158	557	N/A	Annual	BACT
137.	Dibenz(a,h)anthracene	53-70-3	1.48	6.08	14.5	51	N/A	Annual	BACT
138.	7H-Dibenzo(c,g)carbazole	194-59-2	1.62	6.64	15.8	55.7	N/A	Annual	BACT
139.	Dibenzo(a,e)pyrene	192-65-4	1.62	6.64	15.8	55.7	N/A	Annual	BACT
140.	Dibenzo(a,h)pyrene	189-64-0	0.162	0.664	1.58	5.57	N/A	Annual	BACT
141.	Dibenzo(a,i)pyrene	189-55-9	0.162	0.664	1.58	5.57	N/A	Annual	BACT
142.	Dibenzo(a,l)pyrene	191-30-0	0.162	0.664	1.58	5.57	N/A	Annual	BACT
143.	Diborane	19287-45-7	0.00608	0.0236	0.0477	0.184	2.72	24 Hr Avg	N/A
144.	1,2-Dibromo-3-chloropr-opane (DBCP)	96-12-8	0.935	3.84	9.15	32.2	N/A	Annual	BACT
145.	1,2-Dibromoethane (Ethyl-ene dibromide; EDB)	106-93-4	8.08	33.2	79	278	N/A	Annual	BACT
146.	2-N-Dibutylaminoethanol	102-81-8	0.19	0.74	1.49	5.75	85.1	24 Hr Avg	N/A
147.	Dibutylphenyl phosphate	2528-36-1	0.189	0.733	1.48	5.7	84.3	24 Hr Avg	N/A
148.	Dibutyl phthalate (Di-n-bu-tyl phthalate)	84-74-2	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
149.	o-Dichlorobenzene (1,2-Dichlorobenzene)	95-50-1	8.07	31.4	63.3	244	3,608	24 Hr Avg	N/A
150.	p-Dichlorobenzene (1,4-Dichlorobenzene)	106-46-7	162 142,150	664 584,000	1,580 1,390,476	5,569 4,900,699	N/A 800	Annual Annual	BACT N/A
3.23	12.5	25.3	97.5	1,443	24 Hr Avg	N/A
151.	3,3'-Dichlorobenzidine	91-94-1	5.23	21.5	51.1	180	N/A	Annual	BACT
152.	1,3-Dichloro-5,5-dimethyl hydantoin	118-52-5	0.0107	0.0417	0.0842	0.324	4.8	24 Hr Avg	N/A
153.	Dichlorodiphenyltrichloro-ethane (DDT)	50-29-3	18.3 0.0537	75.3 0.209	179 0.421	632 1.62	N/A 24	Annual 24 Hr Avg	BACT N/A
154.	1,1-Dichloroethane (Ethyli-dene dichloride)	75-34-3	21.7	84.5	170	656	9,715	24 Hr Avg	N/A
155.	1,2-Dichloroethane (Ethylene dichloride; EDC)	107-06-2	68.3 2.17	281 8.45	668 17	2,356 65.6	N/A 971	Annual 24 Hr Avg	BACT N/A
156.	Dichloroethyl ether (Bis(2-chloroethyl)ether)	111-44-4	1.57	6.1	12.3	47.4	702	24 Hr Avg	N/A
157.	1,1-Dichloroethylene (Vinylidene chloride)	75-35-4	1.06	4.14	8.35	32.2	476	24 Hr Avg	N/A
158.	1,2-Dichloroethylene	540-59-0	42.6	166	334	1,286	19,033	24 Hr Avg	N/A
158m.	Dichloromethane (Methyl-ene chloride)	75-09-2	9.33 3,781	36.2 15,532	73.1 36,981	282 130,338	4,168 N/A	24 Hr Avg Annual	N/A BACT
159.	1,1-Dichloro-1-nitroethane	594-72-9	0.633	2.46	4.96	19.1	283	24 Hr Avg	N/A
160.	1,2-Dichloropropane (Pro-pylene dichloride)	78-87-5	18.6 711	72.3 2,920	146 6,952	562 24,503	8,318 4	24 Hr Avg Annual	N/A N/A
161.	Dicyclopentadiene	77-73-6	1.45	5.64	11.4	43.8	649	24 Hr Avg	N/A
162.	Diethanolamine	111-42-2	0.107	0.417	0.842	3.24	48	24 Hr Avg	N/A
163.	Diethylamine	109-89-7	0.803	3.12	6.3	24.3	359	24 Hr Avg	N/A
164.	2-Diethylaminoethanol	100-37-8	0.515	2	4.04	15.5	230	24 Hr Avg	N/A
165.	Diethylene triamine	111-40-0	0.227	0.881	1.78	6.84	101	24 Hr Avg	N/A
166.	Diethyl hexyl phthalate (Bis(2-ethyl hexyl) phthalate; Di-sec-octyl phthalate; DEHP)	117-81-7	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
167.	Diethyl phthalate	84-66-2	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
168.	Diethyl sulfate	64-67-5	2.43	10	23.8	83.9	N/A	Annual	BACT
169.	1,4-Diethylene oxide (1,4-Dioxane)	123-91-1	3.87 231	15 948	30.3 2,257	117 7,956	1,730 N/A	24 Hr Avg Annual	N/A BACT
170.	1,1-Difluoroethane	75-37-6	7,107,505	29,200,000	69,523,810	245,034,965	40,000	Annual	N/A
171.	Diglycidyl ether (DGE)	2238-07-5	0.0286	0.111	0.224	0.863	12.8	24 Hr Avg	N/A
172.	Diglycidyl resorcinol ether	101-90-6	3.63	14.9	35.5	125	N/A	Annual	BACT
173.	1,8-Dihydroxyanthroqui-none (Danthron)	117-10-2	80.8	332	790	2,784	N/A	Annual	BACT
174.	Diisobutyl ketone	108-83-8	7.81	30.4	61.2	236	3,490	24 Hr Avg	N/A
175.	Diisopropylamine	108-18-9	1.11	4.32	8.71	33.6	497	24 Hr Avg	N/A
176.	NjN-Dimethyl acetamide	127-19-5	1.91	7.44	15	57.8	855	24 Hr Avg	N/A
177.	Dimethylamine	124-40-3	0.495	1.92	3.88	14.9	221	24 Hr Avg	N/A
178.	4-Dimethylaminoazoben-zene	60-11-7	1.37	5.62	13.4	47.1	N/A	Annual	BACT
179.	Dimethylaniline (N,N-Di-methylaniline)	121-69-7	1.33	5.17	10.4	40.2	595	24 Hr Avg	N/A
180.	Dimethyl benzene (Xylene (mixtures and isomers); Xylol)	1330-20-7	23.3	90.6	183	704	10,421	24 Hr Avg	N/A
181.	3,3'-Dimethylbenzidine (o-Tolidine)	119-93-7	2.43	10	23.8	83.9	N/A	Annual	BACT
182	Dimethyl carbamoyl chloride	79-44-7	0.48	1.97	4.7	16.6	N/A	Annual	BACT
183.	Dimethylethoxysilane	14857-34-2	0.114	0.445	0.897	3.46	51.1	24 Hr Avg	N/A
184.	N,N-Dimethylformamide	68-12-2	1.61	6.24	12.6	48.5	717	24 Hr Avg	N/A
		5,331	21,900	52,143	183,776	30	Annual	N/A
185.	1,1-Dimethylhydrazine	57-14-7	2.43	10	23.8	83.9	N/A	Annual	BACT
186.	Dimethylphthalate	131-11-3	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
187.	Dimethyl sulfate	77-78-1	2.43	10	23.8	83.9	N/A	Annual	BACT
		0.0277	0.108	0.217	0.836	12.4	24 Hr Avg	N/A
188.	Dinitolmide	148-01-6	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
189.	Dinitrobenzene (mixtures and isomers)	528-29-0	0.0554	0.215	0.434	1.67	24.8	24 Hr Avg	N/A
190.	Dinitrotoluene (mixtures and isomers)	25321-14-6	0.0107	0.0417	0.0842	0.324	4.8	24 Hr Avg	N/A
191.	1,4-Dioxane (1,4-Diethyl-ene oxide)	123-91-1	231 3.87	948 15	2,257 30.3	7,956 117	N/A 1,730	Annual 24 Hr Avg	BACT N/A
192.	Dioxins and Furans, chlorinated (2,3,7,8-Tetrachloro-dibenzo-p-dioxin), as equivalents	1746-01-6	0.0001	0.0001	0.0001	0.0001	N/A	Annual	LAER
193.	Direct Black 38 (benzi-dine-based dye)	1937-37-7	0.846	3.48	8.28	29.2	N/A	Annual	BACT
194.	Direct Blue 6 (benzidine-based dye)	2602-46-2	0.846	3.48	8.28	29.2	N/A	Annual	BACT
195.	Disperse Blue 1	2475-45-8	1,367	5,615	13,370	47,122	N/A	Annual	BACT
196.	Disulfiram	97-77-8	0.107	0.417	0.842	3.24	48	24 Hr Avg	N/A
197.	Divinyl benzene (mixtures and isomers)	1321-74-0	2.86	11.1	22.4	86.3	1,278	24 Hr Avg	N/A
198.	EGBE (2-Butoxyethanol; Ethylene glycol monobutyl ether; Butyl cellosolve)	111-76-2	2,309,939 5.19	9,490,000 20.2	22,595,238 40.7	79,636,364 157	13,000 2,320	Annual 24 Hr Avg	N/A
199.	EGEE (2-Ethoxyethanol; Ethylene glycol monoethyl ether; Cellosolve)	110-80-5	0.99 35,538	3.85 146,000	7.76 347,619	29.9 1,225,175	442 200	24 Hr Avg Annual	N/A N/A
200.	EGEEA (2-Ethoxyethyl acetate; Ethylene glycol monoethyl ether acetate; Cellosolve acetate)	111-15-9	1.45	5.64	11.4	43.8	649	24 Hr Avg	N/A
201.	EGME (2-Methoxyethanol; Methyl Cellosolve)	109-86-4	0.836	3.25	6.55	25.2	373	24 Hr Avg	N/A
202.	EGMEA (2-Methoxyethyl acetate; Methyl Cellosolve acetate)	110-49-6	1.3	5.04	10.2	39.2	580	24 Hr Avg	N/A
203.	Epichlorohydrin (1-Chloro-2,3-epoxypro- pane)	106-89-8	178 0.102 1,481	730 0.395 6,083	1,738 0.797 14,484	6,126 3.07 51,049	1 45.4 N/A	Annual 24 Hr Avg Annual	N/A N/A BACT
204.	1,2-Epoxybutane (1,2-Butylene oxide)	106-88-7	3,554	14,600	34,762	122,517	20	Annual	N/A
205.	Erionite (Zeolites)	66733-21-9	2.43	10	23.8	83.9	N/A	Annual	LAER
206.	Ethanamine (Ethylamine)	75-04-7	0.495	1.92	3.88	14.9	221	24 Hr Avg	N/A
207.	Ethanolamine	141-43-5	0.403	1.56	3.16	12.2	180	24 Hr Avg	N/A
208.	2-Ethoxyethanol (Ethylene glycol monoethyl ether; EGEE; Cellosolve)	110-80-5	35,538 0.99	146,000 3.85	347,619 7.76	1,225,175 29.9	200 442	Annual 24 Hr Avg	N/A N/A
209.	2-Ethoxyethyl acetate (Ethylene glycol monoethyl ether acetate; EGEEA; Cel-losolve acetate)	111-15-9	1.45	5.64	11.4	43.8	649	24 Hr Avg	N/A
210.	Ethyl acrylate	140-88-5	1.1	4.27	8.62	33.2	491	24 Hr Avg	N/A
211.	Ethylamine (Ethanamine)	75-04-7	0.495	1.92	3.88	14.9	221	24 Hr Avg	N/A
212.	Ethyl amyl ketone	541-85-5	7.04	27.4	55.2	213	3,146	24 Hr Avg	N/A
213.	Ethyl benzene	100-41-4	23.3	90.6	183	704	10,421	24 Hr Avg	N/A
		177,688	730,000	1,738,095	6,125,874	1,000	Annual	N/A
214.	Ethyl bromide	74-96-4	1.2	4.65	9.38	36.1	535	24 Hr Avg	N/A
215.	Ethyl tert-butyl ether (ETBE)	637-92-3	1.12	4.36	8.8	33.9	501	24 Hr Avg	N/A
216.	Ethyl butyl ketone	106-35-4	12.5	48.7	98.3	379	5,604	24 Hr Avg	N/A
217.	Ethyl carbamate (Urethane)	51-79-6	6.13	25.2	59.9	211	N/A	Annual	BACT
218.	Ethyl chloride (Chloroethane)	75-00-3	1,776,876 14.2	7,300,000 55.1	17,380,952 111	61,258,741 428	10,000 6,333	Annual 24 Hr Avg	N/A N/A
219.	Ethyl cyanoacrylate	7085-85-0	0.055	0.214	0.431	1.66	24.6	24 Hr Avg	N/A
220.	Ethylene chlorohydrin	107-07-3	0.246	0.783	1.51	4.04	329	1 Hr	N/A
221.	Ethylenediamine	107-15-3	1.32	5.13	10.3	39.9	590	24 Hr Avg	N/A
222.	Ethylene dibromide (EDB; 1,2-Dibromoethane)	106-93-4	8.08	33.2	79	278	N/A	Annual	BACT
223.	Ethylene dichloride (EDC; 1,2-Dichloroethane)	107-06-2	2.17 68.3	8.45 281	17 668	65.6 2,356	971 N/A	24 Hr Avg Annual	N/A BACT
224.	Ethylene glycol monobutyl ether (2-Butoxyethanol; EGBE; Butyl cellosolve)	111-76-2	2,309,939 5.19	9,490,000 20.2	22,595,238 40.7	79,636,364 157	13,000 2,320	Annual 24 Hr Avg	N/A N/A
225.	Ethylene glycol monoethyl ether (2-Ethoxyethanol; EGEE; Cellosolve)	110-80-5	35,538 0.99	146,000 3.85	347,619 7.76	1,225,175 29.9	200 442	Annual 24 Hr Avg	N/A N/A
226.	Ethylene glycol monoethyl ether acetate (2-Ethoxy-ethyl acetate; EGEEA; Cellosolve acetate)	111-15-9	1.45	5.64	11.4	43.8	649	24 Hr Avg	N/A
227.	Ethylene glycol vapor and aerosol	107-21-1	7.47	23.8	45.7	123	10,000	1 Hr	N/A
228.	Ethylene oxide	75-21-8	20.2	83	198	696	N/A	Annual	LAER
229.	Ethylene thiourea	96-45-7	137	562	1,337	4,712	N/A	Annual	BACT
230.	Ethylenimine (Aziridine)	151-56-4	0.0473	0.184	0.371	1.43	21.1	24 Hr Avg	N/A
231.	Ethylidene dichloride (1,1-Dichloroethane)	75-34-3	21.7	84.5	170	656	9,715	24 Hr Avg	N/A
232.	Ethylidene norbornene	16219-75-3	1.84	5.85	11.2	30.2	2,458	1 Hr	N/A
233.	N-Ethylmorpholine	100-74-3	1.27	4.92	9.92	38.2	565	24 Hr Avg	N/A
234.	Ethyl silicate	78-10-4	4.58	17.8	35.9	138	2,045	24 Hr Avg	N/A
235.	Fenamiphos	22224-92-6	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
236.	Flour dust (inhalable fraction)	0.0269	0.104	0.211	0.811	12	24 Hr Avg	N/A
237.	Fluorides, (inorganics), as F	0.134	0.522	1.05	4.05	60	24 Hr Avg	N/A
238.	Fluorine	7782-41-4	0.0835	0.324	0.654	2.52	37.3	24 Hr Avg	N/A
239.	Formaldehyde	50-00-0	137	562	1,337	4,712	N/A	Annual	BACT
240.	Formamide	75-12-7	0.99	3.84	7.76	29.9	442	24 Hr Avg	N/A
241.	Formic acid	64-18-6	0.506	1.96	3.96	15.3	226	24 Hr Avg	N/A
242.	Furan	110-00-9	2.43	10	23.8	83.9	N/A	Annual	BACT
243.	Furfural	98-01-1	0.422	1.64	3.31	12.7	189	24 Hr Avg	N/A
244.	Furfuryl alcohol	98-00-0	2.16	8.37	16.9	65.1	963	24 Hr Avg	N/A
245.	Germanium tetrahydride	7782-65-2	0.0337	0.131	0.264	1.02	15	24 Hr Avg	N/A
246.	Glutaraldehyde	111-30-8	0.0153	0.0487	0.0936	0.251	20.5	1 Hr	N/A
247.	Glycidol	556-52-5	0.325	1.26	2.55	9.83	145	24 Hr Avg	N/A
		2.43	10	23.8	83.9	N/A	Annual	BACT
248.	Graphite (all forms except graphite fiber)	7782-42-5	0.107	0.417	0.842	3.24	48	24 Hr Avg	N/A
249.	Hexachlorobenzene (HCB)	118-74-1	0.000107	0.000417	0.000842	0.00324	0.048	24 Hr Avg	N/A
		3.86	15.9	37.8	133	N/A	Annual	BACT
250.	Hexachloroethane	67-72-1	0.52	2.02	4.08	15.7	232	24 Hr Avg	N/A
		444	1,825	4,345	15,315	N/A	Annual	BACT
251.	Hexachloronaphthalene	1335-87-1	0.0107	0.0417	0.0842	0.324	4.8	24 Hr Avg	N/A
252.	Hexamethyl phosphoramide	680-31-9	2.43	10	23.8	83.9	N/A	Annual	BACT
253.	Hexamethylene-1,6-diiso-cyanate (HDI)	822-06-0	1.78 0.00185	7.3 0.00718	17.4 0.0145	61.3 0.0558	0.01 0.826	Annual 24 Hr Avg	N/A N/A
254.	n-Hexane	110-54-3	35,538	146,000	347,619	1,225,175	200	Annual	N/A
		9.47	36.8	74.2	286	4,230	24 Hr Avg	N/A
255.	1,6- Hexanediamine	124-09-4	0.128	0.496	1	3.85	57	24 Hr Avg	N/A
256.	1-Hexene	592-41-6	5.55	21.6	43.5	167	2,478	24 Hr Avg	N/A
257.	Hexone (Methyl isobutyl ketone; MIBk)	108-10-1	11	42.7	86.2	332	4,916	24 Hr Avg	N/A
258.	sec-Hexyl acetate	108-84-9	15.8	61.5	124	478	7,078	24 Hr Avg	N/A
259.	Hexylene glycol	107-41-5	9.02	28.7	55.2	148	12,083	1 Hr	N/A
260.	Hydrazine and hydrazine sulfate	302-01-2	0.363 0.000704	1.49 0.00274	3.55 0.00552	12.5 0.0213	N/A 0.315	Annual 24 Hr Avg	BACT N/A
261.	Hydrochloric acid (Hydrogen chloride; Muriatic acid)	7647-01-0	0.557 3,554	1.77 14,600	3.41 34,762	9.15 122,517	746 20	1 Hr Annual	N/A N/A
262.	Hydrogenated terphenyls	61788-32-7	0.265	1.03	2.08	7.99	118	24 Hr Avg	N/A
263	Hydrogen bromide	10035-10-6	0.741	2.36	4.54	12.2	993	1 Hr	N/A
264.	Hydrogen chloride (Hydrochloric acid; Muriatic acid)	7647-01-0	3,554 0.557	14,600 1.77	34,762 3.41	122,517 9.15	20 746	Annual 1 Hr	N/A N/A
265.	Hydrogen cyanide	74-90-8	0.388	1.24	2.38	6.38	520	1 Hr	N/A
266.	Hydrogen fluoride (Hydrofluoric acid)	7664-39-3	0.183	0.584	1.12	3.01	246	1 Hr	N/A
267.	Hydrogen peroxide	7722-84-1	0.0747	0.29	0.586	2.26	33.4	24 Hr Avg	N/A
268.	Hydrogen sulfide	7783-06-4	0.749	2.91	5.87	22.6	335	24 Hr Avg	N/A
269.	Hydroquinone	123-31-9	0.107	0.417	0.842	3.24	48	24 Hr Avg	N/A
270.	2-Hydroxypropyl acrylate	999-61-1	0.143	0.555	1.12	4.32	63.9	24 Hr Avg	N/A
271.	Indeno(1,2,3-cd)pyrene	193-39-5	16.2	66.4	158	557	N/A	Annual	BACT
272.	Indium	7440-74-6	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
273.	Iodine	7553-56-2	0.0775	0.247	0.475	1.27	104	1 Hr	N/A
274.	lodomethane (Methyl iodide)	74-88-4	0.624	2.42	4.89	18.8	279	24 Hr Avg	N/A
275.	Iron oxide dust and fume, as Fe	1309-37-1	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
276.	Iron salts, soluble, as Fe	0.0537	0.209	0.421	1.62	24	24 Hr Avg	N/A
277.	Isobutyl alcohol	78-83-1	8.14	31.6	63.8	246	3,638	24 Hr Avg	N/A
278.	Isooctyl alcohol	26952-21-6	14.3	55.6	112	432	6,392	24 Hr Avg	N/A
279.	Isophorone	78-59-1	2.11	6.72	12.9	34.7	2,826	1 Hr	N/A
280.	Isophorone diisocyanate	4098-71-9	0.00244	0.00949	0.0191	0.0737	1.09	24 Hr Avg	N/A
281.	Isoprene	78-79-5	2.43	10	23.8	83.9	N/A	Annual	BACT
282.	2-Isopropoxyethanol	109-59-1	5.72	22.2	44.8	173	2,556	24 Hr Avg	N/A
283.	Isopropylamine	75-31-0	0.649	2.52	5.09	19.6	290	24 Hr Avg	N/A
284.	Isopropyl benzene (Cumene)	98-82-8	13.2	51.3	103	399	5,899	24 Hr Avg	N/A
285.	Isopropyl glycidyl ether	4016-14-2	12.8	49.6	100	385	5,702	24 Hr Avg	N/A
286.	N-Isopropylaniline	768-52-5	0.594	2.31	4.66	17.9	265	24 Hr Avg	N/A
287.	Kaolin	1332-58-7	0.107	0.417	0.842	3.24	48	24 Hr Avg	N/A
288.	Kepone (Chlordecone)	143-50-0	0.386	1.59	3.78	13.3	N/A	Annual	BACT
289.	Ketene	463-51-4	0.0462	0.179	0.362	1.39	20.6	24 Hr Avg	N/A
290.	Lead acetate, as Pb	301-04-2	22.2	91.3	217	766	N/A	Annual	BACT
291.	Lead phosphate, as Pb	7446-27-7	148	608	1,448	5,105	N/A	Annual	BACT
292.	Maleic anhydride	108-31-6	0.0215	0.0837	0.169	0.65	9.63	24 Hr Avg	N/A
293.	Manganese, elemental and inorganic compounds, as Mn	7439-96-5	0.0107	0.0417	0.0842	0.324	4.8	24 Hr Avg	N/A
294.	Mercury, as Hg, alkyl compounds	7439-97-6	0.000537	0.00209	0.00421	0.0162	0.24	24 Hr Avg	N/A
295.	Mercury, as Hg, aryl compounds	7439-97-6	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
296.	Mercury, as Hg, inorganic forms including metallic mercury	7439-97-6	53.3	219	521	1,838	0.3	Annual	N/A
		0.00134	0.00522	0.0105	0.0405	0.6	24 Hr Avg	N/A
297.	Mesityl oxide	141-79-7	3.23	12.6	25.4	97.6	1,445	24 Hr Avg	N/A
298.	Methacrylic acid	79-41-4	3.78	14.7	29.7	114	1,690	24 Hr Avg	N/A
299.	2-Methoxyethanol (Methyl cellosolve; EGME)	109-86-4	0.836	3.25	6.55	25.2	373	24 Hr Avg	N/A
300.	2-Methoxyethyl acetate (Methyl Cellosolve acetate; EGMEA)	110-49-6	1.3	5.04	10.2	39.2	580	24 Hr Avg	N/A
301.	4-Methoxyphenol	150-76-5	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
302.	Methyl acrylate	96-33-3	0.378	1.47	2.97	11.4	169	24 Hr Avg	N/A
303.	Methylacrylonitrile	126-98-7	0.147	0.573	1.16	4.45	65.9	24 Hr Avg	N/A
304.	Methylamine	74-89-5	0.341	1.33	2.67	10.3	152	24 Hr Avg	N/A
305.	Methyl n-amyl ketone	110-43-0	12.5	48.7	98.3	379	5,604	24 Hr Avg	N/A
306.	N-Methyl aniline	100-61-8	0.118	0.457	0.923	3.55	52.6	24 Hr Avg	N/A
307.	2-Methyl aziridine (Propy-lenimine; Propylene imine)	75-55-8	0.251 2.43	0.975 10	1.97 23.8	7.57 83.9	112 N/A	24 Hr Avg Annual	N/A BACT
308.	Methyl n-butyl ketone	591-78-6	1.1	4.27	8.62	33.2	492	24 Hr Avg	N/A
309.	Methyl cellosolve (2-Methoxyethanol; EGME)	109-86-4	0.836	3.25	6.55	25.2	373	24 Hr Avg	N/A
310.	Methyl cellosolve acetate (2-Methoxyethyl acetate; EGMEA)	110-49-6	1.3	5.04	10.2	39.2	580	24 Hr Avg	N/A
311.	Methyl chloride (Chloro-methane)	74-87-3	5.55	21.5	43.5	167	2,478	24 Hr Avg	N/A
312.	5-Methyl chrysene	3697-24-3	1.62	6.64	15.8	55.7	N/A	Annual	BACT
313.	Methyl 2-cyanoacrylate	137-05-3	0.0488	0.19	0.383	1.47	21.8	24 Hr Avg	N/A
314.	Methylcyclohexanol	25639-42-3	12.5	48.7	98.3	379	5,604	24 Hr Avg	N/A
315.	o-Methylcyclohexanone	583-60-8	12.3	47.9	96.6	372	5,505	24 Hr Avg	N/A
316.	Methylene bisphenyl isocy-anate (Methylene diphenyl isocyanate; MDI)	101-68-8	0.00275 107	0.0107 438	0.0215 1,043	0.083 3,676	1.23 0.6	24 Hr Avg Annual	N/A N/A
317.	Methylene chloride (Dichloromethane)	75-09-2	9.33 3,781	36.2 15,532	73.1 36,981	282 130,338	4,168 N/A	24 Hr Avg Annual	N/A BACT
318.	4,4'-Methylene bis(2-chlo-roaniline) (MOCA)	101-14-4	4.13	17	40.4	142	N/A	Annual	BACT
319.	Methylene bis(4-cyclohexy-lisocyanate)	5124-30-1	0.00288	0.0112	0.0226	0.087	1.29	24 Hr Avg	N/A
320.	4,4'-Methylenedianiline (and dihydrochloride)	101-77-9	0.0436 3.86	0.169 15.9	0.341 37.8	1.31 133	19.5 N/A	24 Hr Avg Annual	N/A BACT
321.	Methyl ethyl ketone peroxide	1338-23-4	0.108	0.343	0.659	1.77	144	1 Hr	N/A
322.	Methyl formate	107-31-3	14.3	55.5	112	431	6,385	24 Hr Avg	N/A
323.	Methyl hydrazine	60-34-4	0.00101	0.00393	0.00793	0.0306	0.452	24 Hr Avg	N/A
324.	Methyl iodide (lodome-thane)	74-88-4	0.624	2.42	4.89	18.8	279	24 Hr Avg	N/A
325.	Methyl isoamyl ketone	110-12-3	12.5	48.7	98.3	379	5,605	24 Hr Avg	N/A
326.	Methyl isobutyl carbinol	108-11-2	5.61	21.8	44	169	2,507	24 Hr Avg	N/A
327.	Methyl isobutyl ketone (MIBK; Hexone)	108-10-1	11	42.7	86.2	332	4,916	24 Hr Avg	N/A
328.	Methyl isocyanate	624-83-9	0.00251	0.00974	0.0196	0.0757	1.12	24 Hr Avg	N/A
329.	Methyl methacrylate	80-62-6	124,381	511,000	1,216,667	4,288,112	700	Annual	N/A
		11	42.7	86.2	332	4,914	24 Hr Avg	N/A
330.	a-Methyl styrene	98-83-9	13	50.4	102	392	5,800	24 Hr Avg	N/A
331.	Methyl tert-butyl ether (MTBE)	1634-04-4	7.75 533,063	30.1 2,190,000	60.7 5,214,286	234 18,377,622	3,462 3,000	24 Hr Avg Annual	N/A N/A
332.	MIBK (Methyl isobutyl ketone; Hexone)	108-10-1	11	42.7	86.2	332	4,916	24 Hr Avg	N/A
333.	Mirex	2385-85-5	0.348	1.43	3.41	12	N/A	Annual	BACT
334.	Molybdenum, as Mo, metal and insoluble compounds	7439-98-7	0.537	2.09	4.21	16.2	240	24 Hr Avg	N/A
335.	Molybdenum, as Mo, soluble compounds	7439-98-7	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
336.	Monochlorobenzene (Chlorobenzene)	108-90-7	2.47	9.61	19.4	74.7	1,105	24 Hr Avg	N/A
337.	Morpholine	110-91-8	3.83	14.9	30	116	1,710	24 Hr Avg	N/A
338.	MTBE (Methyl tert-butyl ether)	1634-04-4	533,063 7.75	2,190,000 30.1	5,214,286 60.7	18,377,622 234	3,000 3,462	Annual 24 Hr Avg	N/A N/A
339.	Muriatic acid (Hydrogen chloride; Hydrochloric acid)	7647-01-0	3,554 0.557	14,600 1.77	34,762 3.41	122,517 9.15	20 746	Annual 1 Hr	N/A N/A
340.	Mustard gas	505-60-2	2.43	10	23.8	83.9	N/A	Annual	LAER
341.	Naphthalene	91-20-3	2.82	10.9	22.1	85	1,258	24 Hr Avg	N/A
342.	2-Naphthylamine	91-59-8	2.43	10	23.8	83.9	N/A	Annual	LAER
343.	Nickel and compounds, as Ni	7440-02-0	6.83	28.1	66.8	236	N/A	Annual	BACT
344.	Nickel carbonyl, as Ni	13463-39-3	6.83	28.1	66.8	236	N/A	Annual	BACT
		0.0188	0.0729	0.147	0.566	8.38	24 Hr Avg	N/A
345.	Nickel subsulfide, as Ni	12035-72-2	3.7	15.2	36.2	128	N/A	Annual	LAER
346.	Nitric acid	7697-37-2	0.277	1.08	2.17	8.36	124	24 Hr Avg	N/A
347.	Nitrilotriacetic acid	139-13-9	1,185	4,867	11,587	40,839	N/A	Annual	BACT
348.	p-Nitroaniline	100-01-6	0.161	0.626	1.26	4.86	72	24 Hr Avg	N/A
349.	Nitrobenzene	98-95-3	0.27	1.05	2.12	8.17	121	24 Hr Avg	N/A
350.	p-Nitrochlorobenzene	100-00-5	0.0346	0.134	0.271	1.05	15.5	24 Hr Avg	N/A
351.	Nitroethane	79-24-3	16.5	64.1	129	498	7,369	24 Hr Avg	N/A
352.	Nitrogen mustards (2,2'-Dichloro-N-methyl- diethylamine)	51-75-2	2.43	10	23.8	83.9	N/A	Annual	BACT
353.	Nitromethane	75-52-5	2.68	10.4	21	81	1,198	24 Hr Avg	N/A
354.	1-Nitropropane	108-03-2	4.89	19	38.4	148	2,186	24 Hr Avg	N/A
355.	2-Nitropropane	79-46-9	2.43	10	23.8	83.9	N/A	Annual	BACT
		1.96	7.6	15.3	59.1	875	24 Hr Avg	N/A
356.	1-Nitropyrene	5522-43-0	16.2	66.4	158	557	N/A	Annual	BACT
357.	N-Nitrosodi-n-butylamine	924-16-3	1.11	4.56	10.9	38.3	N/A	Annual	BACT
358.	N-Nitrosodiethanolamine	1116-54-7	2.22	9.13	21.7	76.6	N/A	Annual	BACT
359.	N-Nitrosodiethylamine	55-18-5	0.0413	0.17	0.404	1.42	N/A	Annual	BACT
360.	N-Nitrosodimethylamine	62-75-9	0.127	0.521	1.24	4.38	N/A	Annual	BACT
361.	N-Nitrosodi-n-propyla-mine	621-64-7	0.888	3.65	8.69	30.6	N/A	Annual	BACT
362.	N-Nitroso-N-ethylurea	759-73-9	0.231	0.948	2.26	7.96	N/A	Annual	BACT
363.	N-Nitroso-N-methylurea	684-93-5	0.0523	0.215	0.511	1.8	N/A	Annual	BACT
364.	N-Nitrosomethylvinyla-mine	4549-40-0	2.43	10	23.8	83.9	N/A	Annual	BACT
365.	N-Nitrosomorpholine	59-89-2	0.935	3.84	9.15	32.2	N/A	Annual	BACT
366.	N'-Nitrosonornicotine	16543-55-8	2.43	10	23.8	83.9	N/A	Annual	BACT
367.	N-Nitrosopiperidine	100-75-4	0.658	2.7	6.44	22.7	N/A	Annual	BACT
368.	N-Nitrosopyrrolidine	930-55-2	2.91	12	28.5	100	N/A	Annual	BACT
369.	N-Nitrososarcosine	13256-22-9	2.43	10	23.8	83.9	N/A	Annual	BACT
370.	Nitrotoluene (mixtures and isomers)	88-72-2	0.603	2.34	4.72	18.2	269	24 Hr Avg	N/A
371.	Nitrous oxide	10024-97-2	4.84	18.8	37.9	146	2,160	24 Hr Avg	N/A
372.	Octachloronaphthalene	2234-13-1	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
373.	Oxalic acid	144-62-7	0.0537	0.209	0.421	1.62	24	24 Hr Avg	N/A
374.	p,p'-Oxybis(benzenesulfo-nyl hydrazide)	80-51-3	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
375.	Pentachloronaphthalene	1321-64-8	0.0269	0.104	0.211	0.811	12	24 Hr Avg	N/A
376.	Pentachloronitrobenzene (Quintobenzene; PCNB)	82-68-8	0.0269	0.104	0.211	0.811	12	24 Hr Avg	N/A
377.	Pentachlorophenol (PCP)	87-86-5	0.0269	0.104	0.211	0.811	12	24 Hr Avg	N/A
378.	Pentyl Acetate (mixtures and isomers)	628-63-7	14.3	55.6	112	432	6,390	24 Hr Avg	N/A
379.	Perchloroethylene (Tetra-chloroethylene)	127-18-4	301 9.11	1,237 35.4	2,946 71.4	10,383 275	N/A 4,069	Annual 24 Hr Avg	BACT N/A
380.	Perchloromethyl mercaptan	594-42-3	0.0408	0.159	0.32	1.23	18.2	24 Hr Avg	N/A
381.	Perfluoroisobutylene	382-21-8	0.00611	0.0195	0.0374	0.1	8.18	1 Hr	N/A
382.	Persulfates (ammonium, potassium, sodium)	7727-54-0	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
383.	PGME (Propylene glycol monomethyl ether)	107-98-2	355,375	1,460,000	3,476,190	12,251,748	2,000	Annual	N/A
384.	Phenol	108-95-2	1.03	4.02	8.1	31.2	462	24 Hr Avg	N/A
385.	Phenolphthalein	77-09-8	2.43	10	23.8	83.9	N/A	Annual	BACT
386.	Phenylenediamine (mixtures and isomers)	106-50-3	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
387.	Phenyl ether vapor	101-84-8	0.374	1.45	2.93	11.3	167	24 Hr Avg	N/A
388.	Phenyl glycidyl ether (PGE)	122-60-1	0.033	0.128	0.259	0.996	14.7	24 Hr Avg	N/A
389.	Phenylhydrazine	100-63-0	0.0238	0.0923	0.186	0.717	10.6	24 Hr Avg	N/A
390.	Phenyl mercaptan	108-98-5	0.121	0.47	0.949	3.65	54.1	24 Hr Avg	N/A
391.	Phosgene	75-44-5	0.0217	0.0844	0.17	0.656	9.71	24 Hr Avg	N/A
392.	Phosphine	7803-51-2	0.0224	0.0871	0.176	0.677	10	24 Hr Avg	N/A
393.	Phosphoric acid	7664-38-2	0.0537	0.209	0.421	1.62	24	24 Hr Avg	N/A
		1,777	7,300	17,381	61,259	10	Annual	N/A
394.	Phosphorus (yellow)	7723-14-0	0.00544	0.0212	0.0427	0.164	2.43	24 Hr Avg	N/A
395.	Phosphorus oxychloride	10025-87-3	0.0337	0.131	0.264	1.02	15.1	24 Hr Avg	N/A
396.	Phosphorus pentachloride	10026-13-8	0.0457	0.178	0.359	1.38	20.4	24 Hr Avg	N/A
397.	Phosphorus pentasulfide	1314-80-3	0.0537	0.209	0.421	1.62	24	24 Hr Avg	N/A
398.	Phosphorus trichloride	7719-12-2	0.0604	0.234	0.473	1.82	27	24 Hr Avg	N/A
399.	Phthalic anhydride	85-44-9	0.325	1.26	2.55	9.82	145	24 Hr Avg	N/A
400.	Picric acid	88-89-1	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
401.	Platinum (metal)	7440-06-4	0.0537	0.209	0.421	1.62	24	24 Hr Avg	N/A
402.	Platinum, soluble salts, as Pt	7440-06-4	0.000107	0.000417	0.000842	0.00324	0.048	24 Hr Avg	N/A
403.	Polybrominated biphenyls (PBBs; Bromodiphenyls)	59536-65-1	0.207	0.849	2.02	7.12	N/A	Annual	BACT
404.	Polychlorinated biphenyls (PCBs; Chlorodiphenyls; Arochlor)	1336-36-3	0.0269 0.1	0.104 0.1	0.211 0.1	0.811 0.1	12 N/A	24 Hr Avg Annual	N/A BACT
405.	Potassium hydroxide	1310-58-3	0.149	0.476	0.914	2.45	200	1 Hr	N/A
406.	1,3-Propane sultone	1120-71-4	2.58	10.6	25.2	88.8	N/A	Annual	BACT
407.	Propargyl alcohol	107-19-7	0.123	0.479	0.965	3.72	55	24 Hr Avg	N/A
408.	P-Propiolactone	57-57-8	0.444	1.83	4.35	15.3	N/A	Annual	BACT
		0.0792	0.308	0.62	2.39	35.4	24 Hr Avg	N/A
409.	Propionic acid	79-09-4	1.63	6.32	12.8	49.1	727	24 Hr Avg	N/A
410.	Propylene dichloride (1,2-Dichloropropane)	78-87-5	711 18.6	2,920 72.3	6,952 146	24,503 562	4 8,318	Annual 24 Hr Avg	N/A N/A
411.	Propylene glycol mono-methyl ether (PGME)	107-98-2	355,375	1,460,000	3,476,190	12,251,748	2,000	Annual	N/A
412.	Propylene oxide	75-56-9	5,331	21,900	52,143	183,776	30	Annual	N/A
		2.55	9.91	20	77	1,140	24 Hr Avg	N/A
		480	1,973	4,698	16,556	N/A	Annual	BACT
413.	Propylenimine (2-Methyl aziridine; Propylene imine)	75-55-8	0.251 2.43	0.975 10	1.97 23.8	7.57 83.9	112 N/A	24 Hr Avg Annual	N/A BACT
414.	Pyridine	110-86-1	0.77	2.99	6.04	23.2	344	24 Hr Avg	N/A
415.	Pyrocatechol (Catechol)	120-80-9	1.21	4.7	9.48	36.5	540	24 Hr Avg	N/A
416.	Quintobenzene (Penta-chloronitrobenzene)	82-68-8	0.0269	0.104	0.211	0.811	12	24 Hr Avg	N/A
417.	Resorcinol	108-46-3	2.42	9.4	19	73	1,081	24 Hr Avg	N/A
418.	Rhodium (metal) and insoluble compounds, as Rh	7440-16-6	0.0537	0.209	0.421	1.62	24	24 Hr Avg	N/A
419.	Rhodium, soluble compounds, as Rh	7440-16-6	0.000537	0.00209	0.00421	0.0162	0.24	24 Hr Avg	N/A
420.	Safrole	94-59-7	28.2	116	276	972	N/A	Annual	BACT
421.	Selenium and compounds, as Se	7782-49-2	0.0107	0.0417	0.0842	0.324	4.8	24 Hr Avg	N/A
422.	Silicon tetrahydride (Silane)	7803-62-5	0.353	1.37	2.77	10.7	158	24 Hr Avg	N/A
423.	Sodium azide, as sodium azide or hydrazoic acid vapor	26628-22-8	0.0218	0.0696	0.134	0.359	29.3	1 Hr	N/A
424.	Sodium bisulfite	7631-90-5	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
425.	Sodium hydroxide	1310-73-2	0.149	0.476	0.914	2.45	200	1 Hr	N/A
426.	Sodium metabisulfite	7681-57-4	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
427.	Stoddard solvent (Mineral spirits)	8052-41-3	30.8	119	241	929	13,742	24 Hr Avg	N/A
428.	Strong inorganic acid mists containing sulfuric acid (>35% by weight)	7664-93-9	2.43	10	23.8	83.9	N/A	Annual	BACT
429.	Styrene, monomer	100-42-5	4.58	17.8	35.9	138	2,045	24 Hr Avg	N/A
		177,688	730,000	1,738,095	6,125,874	1,000	Annual	N/A
430.	Sulfometuron methyl	74222-97-2	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
431.	Sulfur monochloride	10025-67-9	0.412	1.31	2.53	6.78	552	1 Hr	N/A
432.	Sulfur tetrafluoride	7783-60-0	0.033	0.105	0.202	0.542	44.2	1 Hr	N/A
433.	Sulfuric acid	7664-93-9	0.0537	0.209	0.421	1.62	24	24 Hr Avg	N/A
434.	Sulprofos	35400-43-2	0.0537	0.209	0.421	1.62	24	24 Hr Avg	N/A
435.	Talc, containing no asbestos fibers	14807-96-6	0.107	0.417	0.842	3.24	48	24 Hr Avg	N/A
436.	Tantalum, metal and oxide dusts, as Ta	7440-25-7	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
437.	TCDD (2,3,7,8-Tetrachloro-dibenzo-p-dioxin), as equivalents	1746-01-6	0.0001	0.0001	0.0001	0.0001	N/A	Annual	LAER
438.	Tellurium and compounds, except hydrogen telluride, as Te	13494-80-9	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
439.	Terphenyls	26140-60-3	0.373	1.19	2.29	6.13	500	1 Hr	N/A
440.	2,3,7,8-Tetrachlorodiben-zo-p-dioxin (Dioxin; 2,3,7,8-TCDD), as dioxin equivalents	1746-01-6	0.0001	0.0001	0.0001	0.0001	N/A	Annual	LAER
441.	1,1,2,2-Tetrachloroethane	79-34-5	0.369	1.43	2.89	11.1	165	24 Hr Avg	N/A
442.	Tetrachloroethylene (Per-chloroethylene)	127-18-4	9.11 301	35.4 1,237	71.4 2,946	275 10,383	4,069 N/A	24 Hr Avg Annual	N/A BACT
443.	Tetrachloronaphthalene	1335-88-2	0.107	0.417	0.842	3.24	48	24 Hr Avg	N/A
444.	1,1,1,2-Tetrafluoroethane	811-97-2	14,215,010	58,400,000	139,047,619	490,069,930	80,000	Annual	N/A
445.	Tetrafluoroethylene	116-14-3	0.44	1.71	3.45	13.3	197	24 Hr Avg	N/A
		2.43	10	23.8	83.9	N/A	Annual	BACT
446.	Tetrahydrofuran	109-99-9	31.7	123	248	956	14,155	24 Hr Avg	N/A
447.	Tetranitromethane	509-14-8	0.00215	0.00837	0.0169	0.065	0.962	24 Hr Avg	N/A
		2.43	10	23.8	83.9	N/A	Annual	BACT
448.	Thallium, elemental and soluble compounds, as Tl	7440-28-0	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
449.	Thionyl chloride	7719-09-7	0.363	1.16	2.23	5.97	487	1 Hr	N/A
450.	Thiourea	62-56-6	84.6	348	828	2,917	N/A	Annual	BACT
451.	Tin organic compounds, as Sn	7440-31-5	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
452.	Tin, metal, oxides and inorganic compounds, except tin hydride, as Sn	7440-31-5	0.107	0.417	0.842	3.24	48	24 Hr Avg	N/A
453.	o-Tolidine (3,3'-Dimethyl-benzidine)	119-93-7	2.43	10	23.8	83.9	N/A	Annual	BACT
454.	Toluene (Toluol)	108-88-3	71,075	292,000	695,238	2,450,350	400	Annual	N/A
		10.1	39.3	79.3	306	4,522	24 Hr Avg	N/A
455.	2,4-/2,6-Toluene diisocya-nate (mixtures and isomers) (TDI)	584-84-9	162 0.00191 12.4	664 0.00743 51.1	1,580 0.015 122	5,569 0.0578 429	N/A 0.855 0.07	Annual 24 Hr Avg Annual	BACT N/A N/A
456.	Toluene-2,4-diamine (2,4-Diaminotoluene)	95-80-7	1.62	6.64	15.8	55.7	N/A	Annual	BACT
457.	m- and p-Toluidine	108-44-1	0.471	1.83	3.69	14.2	210	24 Hr Avg	N/A
458.	o-Toluidine and o-toluidine hydrochloride and mixed isomers	95-53-4	34.8 0.471	143 1.83	341 3.69	1,201 14.2	N/A 210	Annual 24 Hr Avg	BACT N/A
459.	Toluol (Toluene)	108-88-3	71,075	292,000	695,238	2,450,350	400	Annual	N/A
		10.1	39.3	79.3	306	4,522	24 Hr Avg	N/A
460.	Tributyl phosphate	126-73-8	0.117	0.455	0.917	3.53	52.3	24 Hr Avg	N/A
461.	1,2,4-Trichlorobenzene	120-82-1	2.77	8.82	17	45.5	3,711	1 Hr	N/A
462.	1,1,2-Trichloroethane	79-00-5	2.93	11.4	23	88.5	1,310	24 Hr Avg	N/A
463.	Trichloroethylene (Tri-chloroethene)	79-01-6	888 14.4	3,650 56.1	8,690 113	30,629 436	N/A 6,449	Annual 24 Hr Avg	BACT N/A
464.	Trichloronaphthalene	1321-65-9	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
465.	2,4,6-Trichlorophenol	88-06-2	573	2,355	5,607	19,761	N/A	Annual	BACT
466.	1,2,3-Trichloropropane	96-18-4	2.43	10	23.8	83.9	N/A	Annual	BACT
		3.24	12.6	25.4	97.8	1,447	24 Hr Avg	N/A
467.	Triethanolamine	102-71-6	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
468.	Triethylamine	121-44-8	0.222	0.864	1.74	6.71	99.3	24 Hr Avg	N/A
469.	1,3,5-Triglycidyl-s-triazi-netrione	2451-62-9	0.00269	0.0104	0.0211	0.0811	1.2	24 Hr Avg	N/A
470.	Trimellitic anhydride	552-30-7	0.00299	0.00951	0.0183	0.0491	4	1 Hr	N/A
471.	Trimethyl benzene (mixtures and isomers)	25551-13-7	6.6	25.6	51.7	199	2,949	24 Hr Avg	N/A
472.	Trimethylamine	75-50-3	0.649	2.52	5.09	19.6	290	24 Hr Avg	N/A
473.	2,4,6-Trinitrotoluene (TNT)	118-96-7	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
474.	Triorthocresyl phosphate	78-30-8	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
475.	Triphenyl phosphate	115-86-6	0.161	0.626	1.26	4.86	72	24 Hr Avg	N/A
476.	Tris(2,3-dibromopropyl phosphate)	126-72-7	2.69	11.1	26.3	92.8	N/A	Annual	BACT
477.	Tungsten, as W, metal and insoluble compounds	7440-33-7	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
478.	Tungsten, as W, soluble compounds	7440-33-7	0.0537	0.209	0.421	1.62	24	24 Hr Avg	N/A
479.	Uranium (natural), soluble and insoluble compounds, as U	7440-61-1	0.0107	0.0417	0.0842	0.324	4.8	24 Hr Avg	N/A
480.	Urethane (Ethyl carbamate)	51-79-6	6.13	25.2	59.9	211	N/A	Annual	BACT
481.	n-Valeraldehyde	110-62-3	9.46	36.8	74.2	286	4,227	24 Hr Avg	N/A
482.	Vanadium pentoxide, as V2O5, respirable dust and fume	1314-62-1	0.00269	0.0104	0.0211	0.0811	1.2	24 Hr Avg	N/A
483.	Vinyl acetate	108-05-4	35,538	146,000	347,619	1,225,175	200	Annual	N/A
1.89	7.35	14.8	57.1	845	24 Hr Avg	N/A
484.	Vinyl bromide	593-60-2	0.117	0.456	0.921	3.55	52.5	24 Hr Avg	N/A
485.	Vinyl chloride	75-01-4	17,769	73,000	173,810	612,587	100	Annual	N/A
		202	830	1,975	6,961	N/A	Annual	LAER
486.	Vinyl cyclohexene dioxide (4-Vinyl-1-cyclohexene diepoxide)	106-87-6	2.43 0.0308	10 0.12	23.8 0.241	83.9 0.93	N/A 13.8	Annual 24 Hr Avg	BACT N/A
487.	4-Vinyl cyclohexene	100-40-3	0.0238	0.0923	0.186	0.717	10.6	24 Hr Avg	N/A
488.	Vinyl fluoride	75-02-5	0.101	0.393	0.793	3.05	45.2	24 Hr Avg	N/A
489.	Vinylidene chloride (1,1-Dichloroethylene)	75-35-4	1.06	4.14	8.35	32.2	476	24 Hr Avg	N/A
490.	Vinyl toluene	25013-15-4	13	50.4	102	392	5,800	24 Hr Avg	N/A
491.	Xylene (mixtures and isomers) (Xylol; Dimethyl benzene)	1330-20-7	23.3	90.6	183	704	10,421	24 Hr Avg	N/A
492.	m-Xylene-([ALPHA], [ALPHA]'-diamine	1477-55-0	0.00747	0.0238	0.0457	0.123	10	1 Hr	N/A
493.	Xylidine (mixtures and isomers)	1300-73-8	0.133	0.517	1.04	4.02	59.5	24 Hr Avg	N/A
494.	Yttrium metal and compounds, as Y	7440-65-5	0.0537	0.209	0.421	1.62	24	24 Hr Avg	N/A
495.	Zeolites (Erionite)	66733-21-9	2.43	10	23.8	83.9	N/A	Annual	LAER
496.	Zirconium and compounds, as Zr	7440-67-7	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A

Note: The emission rates in columns (c) to (f) in Table A for any hazardous air contaminant may only be used if emissions are from an unobstructed vertical discharge point. Owners and operators of sources unable to use this table should refer to s. NR 445.08(2).

1 For purposes of calculating non-exempt, potential to emit emissions for comparison with the threshold value in column (c), (d), (e) or (f) in the table the owner or operator of a source would:

- combine non-exempt, potential to emit emissions for each contaminant for all stacks within each of the 4 stack categories,

- compare each group of non-exempt, potential to emit emissions against the respective threshold found in column (c), (d), (e) or (f) in the table

- if any group exceeds it's respective threshold in column (c), (d), (e) or (f), consider all non-exempt, potential to emit emissions from the source in determining compliance with the applicable standard or control requirement.

Hazardous Air Contaminant	CAS Number	Thresholds for Emission Points1 (expressed as lbs/hr or lbs/yr)				Ambient Air Standard (per time period in	Time Period for Standard and Threshold	Control Requirement
Emissions from Stacks <25 ft	Emissions from Stacks 25 to <40 ft	Emissions from Stacks 40 to <75 ft	Emissions from Stacks >=75 ft	column (h) expressed as micrograms per cubic meter)
(a)	(b)	(c)	(d)	(e)	(f)	(g)	(h)	(i)
1.	Aldrin	309-00-2	0.0134	0.0522	0.105	0.405	6	24 Hr Avg	N/A
2.	Amitrole	61-82-5	6.58	27	64.4	227	N/A	Annual	BACT
0.0107	0.0417	0.0842	0.324	4.8	24 Hr Avg	N/A
3.	Antimony hydride (Stibine)	7803-52-3	0.0274	0.107	0.215	0.828	12.2	24 Hr Avg	N/A
4.	ANTU	86-88-4	0.0161	0.0626	0.126	0.486	7.2	24 Hr Avg	N/A
5.	Atrazine	1912-24-9	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
6.	Azinphos-methyl	86-50-0	0.0107	0.0417	0.0842	0.324	4.8	24 Hr Avg	N/A
7.	Baygon (Propoxur)	114-26-1	0.0269	0.104	0.211	0.811	12	24 Hr Avg	N/A
8.	Benomyl	17804-35-2	0.537	2.09	4.21	16.2	240	24 Hr Avg	N/A
9.	Bromacil	314-40-9	0.537	2.09	4.21	16.2	240	24 Hr Avg	N/A
10.	Bromomethane (Methyl bromide)	74-83-9	888	3,650	8,690	30,629	5	Annual	N/A
0.209	0.81	1.64	6.3	93.2	24 Hr Avg	N/A
11.	Captafol	2425-06-1	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
12.	Captan	133-06-2	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
13.	Carbaryl	63-25-2	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
14.	Carbofuran	1563-66-2	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
15.	Chlordane	57-74-9	0.0269	0.104	0.211	0.811	12	24 Hr Avg	N/A
16.	Chlorinated camphene (Toxaphene)	8001-35-2	5.55	22.8	54.3	191	N/A	Annual	BACT
0.0269	0.104	0.211	0.811	12	24 Hr Avg	N/A
17.	1-Chloro-1-nitropropane	600-25-9	0.543	2.11	4.25	16.4	243	24 Hr Avg	N/A
18.	Chloropicrin (Trichloro-nitromethane)	76-06-2	0.0361	0.14	0.283	1.09	16.1	24 Hr Avg	N/A
19.	Chlorpyrifos	2921-88-2	0.0107	0.0417	0.0842	0.324	4.8	24 Hr Avg	N/A
20.	Crufomate	299-86-5	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
21.	Cyhexatin	13121-70-5	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
22.	Demeton	8065-48-3	0.00568	0.0221	0.0445	0.171	2.54	24 Hr Avg	N/A
23.	Diazinon	333-41-5	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
24.	1,3-Dichloropropene	542-75-6	444	1,825	4,345	15,315	N/A	Annual	BACT
0.244	0.947	1.91	7.36	109	24 Hr Avg	N/A
3,554	14,600	34,762	122,517	20	Annual	N/A
25.	2,2-Dichloropropionic acid	75-99-0	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
26.	Dichlorvos	62-73-7	88.8	365	869	3,063	0.5	Annual	N/A
0.0483	0.188	0.379	1.46	21.6	24 Hr Avg	N/A
27.	Dicrotophos	141-66-2	0.0134	0.0522	0.105	0.405	6	24 Hr Avg	N/A
28.	Dieldrin	60-57-1	0.0134	0.0522	0.105	0.405	6	24 Hr Avg	N/A
29.	Dinitro-o-cresol (4,6-Dinitro-o-cresol)	534-52-1	0.0107	0.0417	0.0842	0.324	4.8	24 Hr Avg	N/A
30.	Dioxathion	78-34-2	0.0107	0.0417	0.0842	0.324	4.8	24 Hr Avg	N/A
31.	Diquat, respirable dust (various compounds) (Diquat dibromide)	2764-72-9	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
32.	Diquat, total dust (various compounds) (Diquat dibro-mide)	2764-72-9	0.0269	0.104	0.211	0.811	12	24 Hr Avg	N/A
33.	Disulfoton	298-04-4	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
34.	Endosulfan	115-29-7	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
35.	Endrin	72-20-8	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
36.	EPN	2104-64-5	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
37.	Ethion	563-12-2	0.0215	0.0835	0.168	0.649	9.6	24 Hr Avg	N/A
38.	Fensulfothion	115-90-2	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
39.	Fenthion	55-38-9	0.0107	0.0417	0.0842	0.324	4.8	24 Hr Avg	N/A
40.	Fonofos	944-22-9	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
41.	Heptachlor and heptachlor epoxide	76-44-8	0.00269	0.0104	0.0211	0.0811	1.2	24 Hr Avg	N/A
42.	Hexachlorobutadiene	87-68-3	0.0115	0.0445	0.0898	0.346	5.12	24 Hr Avg	N/A
43.	Hexachlorocyclohexane and isomers (Lindane and isomers)	58-89-9	0.0269	0.104	0.211	0.811	12	24 Hr Avg	N/A
		5.73	23.5	56.1	198	N/A	Annual	BACT
44.	Hexachlorocyclopenta-diene	77-47-4	0.00599	0.0233	0.047	0.181	2.68	24 Hr Avg	N/A
45.	Lindane and other hexa-chlorocyclohexane isomers	58-89-9	5.73	23.5	56.1	198	N/A	Annual	BACT
		0.0269	0.104	0.211	0.811	12	24 Hr Avg	N/A
46.	Methomyl	16752-77-5	0.134	0.522	1.05	4.05	60	24 Hr Avg	N/A
47.	Methyl bromide (Bromo-methane)	74-83-9	888	3,650	8,690	30,629	5	Annual	N/A
		0.209	0.81	1.64	6.3	93.2	24 Hr Avg	N/A
48.	Methyl demeton	8022-00-2	0.0269	0.104	0.211	0.811	12	24 Hr Avg	N/A
49.	Methyl parathion	298-00-0	0.0107	0.0417	0.0842	0.324	4.8	24 Hr Avg	N/A
50.	Metribuzin	21087-64-9	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
51.	Mevinphos (Phosdrin)	7786-34-7	0.00483	0.0188	0.0379	0.146	2.16	24 Hr Avg	N/A
52.	Monocrotophos	6923-22-4	0.0134	0.0522	0.105	0.405	6	24 Hr Avg	N/A
53.	Naled	300-76-5	0.161	0.626	1.26	4.86	72	24 Hr Avg	N/A
54.	Paraquat (respirable sizes) (Paraquat chloride)	1910-42-5	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
55.	Parathion	56-38-2	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
56.	Phenothiazine	92-84-2	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
57.	Phorate	298-02-2	0.00269	0.0104	0.0211	0.0811	1.2	24 Hr Avg	N/A
58.	Pindone	83-26-1	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A
59.	Propoxur (Baygon)	114-26-1	0.0269	0.104	0.211	0.811	12	24 Hr Avg	N/A
60.	Pyrethrum	8003-34-7	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
61.	Quinone	106-51-4	0.0237	0.0923	0.186	0.717	10.6	24 Hr Avg	N/A
62.	Rotenone (commercial)	83-79-4	0.269	1.04	2.11	8.11	120	24 Hr Avg	N/A
63.	Sodium fluoroacetate	62-74-8	0.00269	0.0104	0.0211	0.0811	1.2	24 Hr Avg	N/A
64.	Stibine (Antimony hydride)	7803-52-3	0.0274	0.107	0.215	0.828	12.2	24 Hr Avg	N/A
65.	Strychnine	57-24-9	0.00806	0.0313	0.0632	0.243	3.6	24 Hr Avg	N/A
66.	Sulfotep (TEDP)	3689-24-5	0.0107	0.0417	0.0842	0.324	4.8	24 Hr Avg	N/A
67.	Sulfuryl fluoride	2699-79-8	1.12	4.36	8.79	33.8	501	24 Hr Avg	N/A
68.	TEPP	107-49-3	0.00269	0.0104	0.0211	0.0811	1.2	24 Hr Avg	N/A
69.	Thiram	137-26-8	0.0537	0.209	0.421	1.62	24	24 Hr Avg	N/A
70.	Toxaphene (Chlorinated camphene)	8001-35-2	5.55	22.8	54.3	191	N/A	Annual	BACT
0.0269	0.104	0.211	0.811	12	24 Hr Avg	N/A
71.	Trichloronitromethane (Chloropicrin)	76-06-2	0.0361	0.14	0.283	1.09	16.1	24 Hr Avg	N/A
72.	Warfarin	81-81-2	0.00537	0.0209	0.0421	0.162	2.4	24 Hr Avg	N/A

Note:The emission rates in columns (c) to (f) in Table B for any hazardous air contaminant may only be used if emissions are from an unobstructed vertical discharge point. Owners and operators of sources unable to use this table should refer to s. NR 445.08(2).

1For purposes of calculating non-exempt, potential to emit emissions for comparison with the threshold value in column (c), (d), (e) or (f) in the table the owner or operator of a source would:

-combine non-exempt, potential to emit emissions for each contaminant for all stacks within each of the 4 stack categories,

-compare each group of non-exempt, potential to emit emissions against the respective threshold found in column (c), (d), (e) or (f) in the table,

-if any group exceeds it's respective threshold in column (c), (d), (e) or (f), consider all non-exempt, potential to emit emissions from the source in determining compliance with the applicable or control requirement

	Hazardous Air Contaminant	CAS Number	Thresholds for Emission Points1 (expressed as lbs/hr or lbs/yr)				Ambient Air Standard (per time period in column (h) expressed as micrograms per cubic meter)	Time Period for Standard and Threshold	Control Requirement
			Emissions from Stacks <25 ft	Emissions from Stacks 25 to <40 ft	Emissions from Stacks 40 to <75 ft	Emissions from Stacks >=75 ft
(a)	(b)	(c)	(d)	(e)	(f)	(g)	(h)	(i)
1.	Adriamycin	23214-92-8	2.43	10	23.8	83.9	N/A	Annual	BACT
2.	Azathioprine	446-86-6	3.48	14.3	34.1	120	N/A	Annual	LAER
3.	Bischloroethyl nitrosourea	154-93-8	2.43	10	23.8	83.9	N/A	Annual	BACT
4.	N,N-Bis (2-chloro- ethyl)-2-naphthylamine (Chlornaphazine)	494-03-1	2.43	10	23.8	83.9	N/A	Annual	LAER
5.	Bis(chloromethyl) ether (BCME) and technical grade	542-88-1	2.43	10	23.8	83.9	N/A	Annual	LAER
6.	1,4-Butanediol dimethane-sulphonate (Myleran; busul-phan)	55-98-1	2.43	10	23.8	83.9	N/A	Annual	LAER
7.	Chlorambucil	305-03-3	0.0137	0.0562	0.134	0.471	N/A	Annual	LAER
8.	Chlornaphazine (N,N-Bis (2-chloroethyl)-2-naphthyl- amine)	494-03-1	2.43	10	23.8	83.9	N/A	Annual	LAER
9.	1-(2-Chloroethyl)-3-cyclo-hexyl-1-nitrosourea (CCNU)	13010-47-4	2.43	10	23.8	83.9	N/A	Annual	BACT
10.	Chloromethyl methyl ether (CMME)	107-30-2	2.43	10	23.8	83.9	N/A	Annual	LAER
11.	Cyclophosphamide	50-18-0	10.5	42.9	102	360	N/A	Annual	LAER
12.	Dacarbazine	4342-03-4	0.127	0.521	1.24	4.38	N/A	Annual	BACT
13.	Diethylstilbestrol (DES)	56-53-1	0.0178	0.073	0.174	0.613	N/A	Annual	LAER
14.	Estradiol (Oestradiol)	50-28-2	0.162	0.664	1.58	5.57	N/A	Annual	BACT
15.	Iron dextran complex	9004-66-4	2.43	10	23.8	83.9	N/A	Annual	BACT
16.	Melphalan	148-82-3	0.048	0.197	0.47	1.66	N/A	Annual	LAER
17.	Mestranol	72-33-3	2.43	10	23.8	83.9	N/A	Annual	BACT
18.	N-Methyl-N'-nitro-N-nitro-soguanidine (MNNG)	70-25-7	0.74	3.04	7.24	25.5	N/A	Annual	BACT
19.	Myleran (1,4-Butanediol dimethanesulphonate; Busul-phan)	55-98-1	2.43	10	23.8	83.9	N/A	Annual	LAER
20.	Oestradiol (Estradiol)	50-28-2	0.162	0.664	1.58	5.57	N/A	Annual	BACT
21.	Phenazopyridine and phena-zopyridine hydrochloride	136-40-3	36.3	149	355	1250	N/A	Annual	BACT
22.	Phenytoin and sodium salt of phenytoin	57-41-0	2.43	10	23.8	83.9	N/A	Annual	BACT
23.	Procarbazine and procarbazine hydrochloride	366-70-1	0.444	1.83	4.35	15.3	N/A	Annual	BACT
24.	Propylthiouracil	51-52-5	6.13	25.2	59.9	211	N/A	Annual	BACT
25.	Streptozotocin	18883-66-4	0.0573	0.235	0.561	1.98	N/A	Annual	BACT
26.	Thiotepa (Tris(1-aziri-dinyl)phosphine sulfide)	52-24-4	0.523	2.15	5.11	18	N/A	Annual	LAER
27.	Tris(1-aziridinyl)phosphine sulfide (Thiotepa)	52-24-4	0.523	2.15	5.11	18	N/A	Annual	LAER

The emission rates in columns (c) to (f) in Table C for any hazardous air contaminant may only be used if emissions are from an unobstructed vertical discharge point. Owners and operators of sources unable to use this table should refer to s. NR 445.08(2).

1For purposes of calculating non-exempt, potential to emit emissions for comparison with the threshold value in column (c), (d), (e) or (f) in the table the owner or operator of a source would:

-combine non-exempt, potential to emit emissions for each contaminant for all stacks within each of the 4 stack categories,

-compare each group of non-exempt, potential to emit emissions against the respective threshold found in column (c), (d), (e) or (f) in the table

-if any group exceeds its respective threshold in column (c), (d), (e) or (f), consider all non-exempt, potential to emit emissions from the source in determining compliance with the applicable standard or control requirement

Wis. Admin. Code Department of Natural Resources NR 445.07

CR 02-097: cr. Register June 2004 No. 582, eff. 7-1-04; CR 07-076: am. Tables A, B and C Register July 2008 No. 631, eff. 8-1-08; correction in (1) (b) 2. made under s. 13.92(4) (b) 6, Stats., Register August 2008 No. 632.