1 United States Environmental Protection Agency Research Triangle Park, NC 27711

MEMORANDUM

SUBJECT: Emission Standards for Meeting the 90 Percent Requirement Under Section

112(c)(3) and Section 112(k) (3) (B) of the Clean Air Act

FROM: Nathan E. Topham, Environmental Engineer

Metals and Minerals Group, SPPD (D243

- 02)

TO: DOCKET ID: EPA

- HQ

- OAR

- 200 2

- 0 036

DATE: February 18 , 2011

Sections 112(c)(3) and (k)(3)(B) of the Clean Air Act (CAA) require that EPA

promulgate emission standards assuring that area sources representing 90 percent of the area

source emissions of the 30 urban hazardous air pollutants (HAP) 1 are subject to emission

standards. This memorandum describes how the Agency is satisfying this obligation under

sections 112(c)(3) and (k)(3)(B) f or all 30 urban HAP. This memorandum documents the

actions that EPA has taken to fulfill this obligation.

In 1999, EPA published an Urban Air Toxics Strategy (UATS) that included a list of 30

urban HAP. In the UATS, EPA explained that it had created a baseline inventory that would be

used for a number of actions identified in the UATS, including using the inventory as a baseline

for determin ing whether EPA has promulgated sufficient standards to meet the 90 percent

requirement under section 112(c)(3) and (k)(3)(B) (hereinafter referred to as the “section 112( k )

baseline inventory”). 2 Based on that inventory, 3 i n a subsequent notice published November 22,

2002, EPA identified the categories that EPA believed at the time were necessary to meet the

1 Sections 112(c)(3) and (k)(3)(B) require that EPA identify 30 HAP that present the greatest threat to public health in the largest number of urban areas. EPA commonly refers to these HAP as “urban HAP”. As discussed above,
EPA identified the 30 urban HA P in the Urban Air Toxics Strategy, 64 FR 38706 (July 19, 1999).

2 See 64 FR 38706, 38711, n.10. The Section 112(k) baseline inventory is representative of the years 1990

- 1993.

3 See Docket ID: EPA

- HQ

- OAR

- 2002

- 0036

- 0057, posted 11/29/2002.2

oblig ation for all 30 urban HAP ( 67 FR 70427)

. This memo discusses updates made to the

section 112(k) baseline inventory since the November 2002 notice and any associated changes to

the source category list.

In addition, Appendix I to this memorandum ident ifies the source categories for meeting

the 90 percent requirement for each of the 30 urban HAP and the percent of the baseline

inventory each regulated category contributes for each urban HAP. Appendix II lists all of these

standards alphabetically by ca tegory and, for each standard, the regulated urban HAP and the

Code of Federal Regulation reference for the standard

.

I. Categories Not Needed to Meet the 90 Percent Requirement

A. Brick and Structural Clay Products Manufacturing

At the time of the 2002 notice, t he 112( k ) baseline emissions inventory combined the

baseline emissions from the following two area source categories into the “clay products

manufacturing” category : (1) Brick and Structural Clay Products Manufacturing and (2) Clay

Ceramics Manuf

acturing. Based on the combined baseline emissions estimates for these two

area source categories, EPA determined that both categories were needed to meet the 90 percent

requirement under section 112(c)(3) and 112(k)(3)(B) for chromium, lead, manganese, a nd

nickel.

A more detailed assessment of the estimated baseline emissions shows these baseline

emissions to be from the glazing processes during clay ceramics manufacturing. In light of the

above and b ased on our knowledge of the Brick and Structural Clay Products Man ufacturing area

source category , we believe that only trace amounts of these urban HAP are emitted from the

Brick and Structural Clay Products Manufacturing area source category. As shown in Appendix

I, based on the updated section 112( k ) bas eline inventory, we have determined that we only need3

the clay ceramics manufacturing source category to meet the 90 percent requirement for

chromium, lead, manganese, and nickel. On December 26, 2007 EPA established emission

standards that address these urban HAP emissions from the Clay Ceramic Manufacturing area

source category (72 FR 73180).

B. Other Solid Waste Incineration (Human/Animal Cremation)

At the time of the 2002 notice , the section 112(k) baseline inventory included a mercury

emission estimate of about 1.2 tons of mercury from animal cremation and 0.6 tons for human

cremation 4

. We believe that baseline mercury emission estimate for animal cremation was

inaccurate because mercury emissions from cremation are due to mercury use in human dental

r estoration and, therefore, there are no mercury emissions from animal cremation

. The table

below shows the updated section 112(k) baseline mercury emissions for this source category

,

which has no mercury emissions from animal cremation and low mercury emi ssions from human

cremation (0.6 tpy). As shown in Appendix I, we have determined that we do not need this

source category to meet the 90 percent requirement under sections 112(c)(3) and (k)(3)(B).

animal cremation human cremation

TPY % TPY %
7

- PAH 0.0000000306 0.0000023 0.0000000119 0.0000009
Arsenic Compounds 0.0118 0.073 0.00459 0.028 Beryllium Compounds 0.000545 0.0005 0.000211 0.019
Cadmium Compounds 0.00438 0.014 0.0017 0.01
Chromium Compounds 0.0118 0.0036 0.00458 0.0014 Formaldehyde 0.0000000858 0.000000000850 0.0000000332 0.000000000330 Mercury Compounds 0 0 0.6 0.994

4 See Docket I D: EPA

- HQ

- OAR

- 2002

- 0036

- 0057.4

Nickel Compounds 0.0151 0.0059 0.00585 0.0023

C. Area Source Boilers Fired by Natural Gas (part of the Industrial Boilers and

Institutional/Commercial boilers area source categories)

The Industrial Boilers and Institutional/Commercial Boilers area source categories emit

the following urban HAP: polycyclic organic matter (POM), acetaldehyde, acrolein, arsenic,

beryllium, cadmium, chromium, dioxins, formaldehyde, lead , manganese, mercury, nickel, and

polychlorinated biphenyls (PCB). According to the 112(k) baseline inventory (see table below)

,
natural gas

- fired area source boilers emit only acetaldehyde, benzene, and formaldehy de at very

low levels

. There are over 1 million of these natural gas

- fired area source boilers (e.g., boilers

used in churches and schools). We estimate that the cost of controlling the very small amounts of

HAP emissions from natural gas

- fired area source boilers would be over 2 billion dollars

. As

shown in Appendix I, we do not need this group of boilers to meet the 90 percent requirement for

section 112(c)(3) and 112(k)(3)(B).

Industrial Natural Gas

- Fired Area Source Boilers Institutional/Commercial Natural Gas

Fired Area Source Boilers
Urb an HAP Emissions (tons

per year) Percent

Contribution Emissions (tons

per year) Percent

Contribution Acetaldehyde 0.0136 0.001% 0.0174 0.0002%
Benzene 2.2 0.003% 2.81 0.0003% Formaldehyde 78.7 0.008% 100 0.01%

II. Updates to Baseline Emission Inventory for Mercury

The baseline emission inventory contained inaccurate mercury emissions for electric arc

furnaces. Mercury emissions from EAF during 1990 w ere evaluated during the development of

the EAF area source rule pursuant to section 112(c)(3) and (k)(3)(B) of the CAA. Based on5

scrap steel charged in EAFs during 1990 (38 million tons) and a revised emission factor 5 from

scrap steel, the 1990 base

- year mercury emissions from this area source category were estimated

to be 7.8 tons. The inventory in Appendix I has been updated to reflect this change as well as the

change to human/animal cremation mentioned above

.

5 Prepared for U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards, Sector Policies and Program Division, Metals and Minerals Grou p. July 18, 2007. Docket Item 0070 in EPA Docket Number OAR

- 2004

- 0083.6 Appe ndix I

– Source Categories for Meeting the 90 Percent Requirement U nder CAA Sections 112(c)(3) and 112(k)(3)(B)

Table I.1

– Percent Contributions to 90 Percent Requirement from Regulated Area Source Categories 6

6 “Full table including “Other” categories will available along with this memo in Docket ID EPA

- HQ

- OAR

- 2002

- 0036.789

Appendix II

– Area Source Categories Used for Meeting the 90 Percent Requirement Under

CAA Section s 112(c)(3) and 112(k)(3)(B)

Table II.1

– Source Categories, Urban HAP, and CFR Subparts Section 112(k) Source Category Name Urban HAP Code of Federal Regulations Part and Subpart Acrylic/Modacrylic Fibers Production Acrylonitrile 40 CFR part 63 subpart
LLLLLL Agricultural Chemicals and Pesticide Manufacturing 1,3

- Dichloropropene, Arsenic Compounds, Chromium Compounds, Hexachlorobenzene, Hydrazine, Lead Compounds, Manganese Compounds 40 CFR part 63 subpart
VVVVVV

Aluminum Foundries Beryllium Compounds, Cadmium Compounds, Chromium Compounds, Lead Compounds, Manganese Compounds, Nickel Compounds 40 CFR part 63 subpart
ZZZZZZ

Asphalt Processing & Asphalt Roofing Manufacturing Chromium Compounds, Polycyclic Organic Matter 40 CFR part 63 subpart
AAAAAAA

Carbon Black Production Polycyclic Organic Matter 40 CFR part 63 subpart
MMMMMM Chemical Preparations Industry Cadmium Compounds, Chromium Compounds, Ethylene Dichloride, Ethylene Oxide, Lead Compounds, Manganese Compounds, Nickel Compounds 40 CFR part 63 subpart
BBBBBBB

Chromic Acid Anodizing, Decorative Chromium Electroplating, Hard Chromium Electroplating Chromium Compounds 40 CFR part 63 subpart
N

Chemical Manufacturing: Chromium Compounds Chromium Compounds 40 CFR part 63 subpart
NNNNNN Clay Ceramics Manufacturing Chromium Compounds, Lead Compounds, Manganese Compounds, Nickel Compounds 40 CFR part 63 subpart
RRRRRR

Commercial Sterilization Facilities Ethylene Oxide 40 CFR part 63 subpart O Copper Foundries Lead Compounds, Manganese Compounds, Nickel Compounds 40 CFR part 63 subpart
ZZZZZZ10

Section 112(k) Source Category Name Urban HAP Code of Federal Regulations Part and Subpart Cyclic Crude & Intermediate Production Acetaldehyde, Cadmium Compounds, Chloroform, Chromium Compounds, Ethylene Dichloride, Hydrazine, Lead Compounds, Manganese Compounds, Methylene Chloride, Nickel Compounds, Quinoline 40 CFR part 63 subpart
VVVVVV

Dry Cleaning Facilities Tetrachloroethylene 40 CFR part 63 subpart
M Ferroalloys Production Chromium Compounds, Manganese Compounds, Polycyclic Organic Matter, Nickel Compounds 40 CFR part 63 subpart
YYYYYY

Flexible Polyurethane Foam Fabrication and Production Methylene Chloride 40 CFR part 63 subpart OOOOOO

Gasoline Distribution Bulk Terminal, Bulk Plant and Pipeline Facilities Benzene, Ethylene Dichloride, Lead Compounds 40 CFR part 63 subpart
BBBBBB

Halogenated Solvent Cleaners / Degreasing Organic Cleaners Methylene Chloride, Tetrachloroethylene, Trichloroethylene 40 CFR part 63 subpart
T

Hazardous Waste Incineration Arsenic Compounds, Beryllium Compounds, Cadmium Compounds, Chromium Compounds, Dioxins, Lead Compounds, Mercury Compounds, Polychlorinated Bip henyls 40 CFR part 63 subpart
EEE

Industrial Boilers fired by coal, wood, and oil Acetaldehyde, Acrolein, Arsenic Compounds, Benzene, Beryllium Compounds, Cadmium Compounds, Chromium Compounds, Dioxins, Ethylene Dichloride, Formaldehyde, Lead Compounds, Manganese Compounds, Mercury Compounds, Nickel, Polychlorinated Biphenyls, Polycyclic Organic Matter 40 CFR part 63 subpart
JJJJJJ11

Section 112(k) Source Category Name Urban HAP Code of Federal Regulations Part and Subpart Industrial Inorganic Chemical Manufacturing 1,3

- Dichloropropene, Acetaldehyde, Arsenic Compounds, Cadmium Compounds, Chloroform, Chromium Compounds, Hydrazine, Lead Compounds, Manganese Compounds, Mercury Compounds, Methylene Chloride, Nickel Compounds 40 CFR part 63 subpart
VVVVVV

Industrial Organic Chemical Manufacturing 1,3 Butadiene, Acetaldehyde, Arsenic Compounds, Cadmium Compounds, Chloroform, Chromium Compounds, Ethylene Dichloride, Hydrazine, Lead Compounds, Manganese Compounds, Mercury Compounds, Methylene Chloride, Nickel Compounds 4 0 CFR part 63 subpart
VVVVVV

Inorganic Pigments Manufacturing Chromium Compounds, Lead Compounds, Manganese Compounds, Mercury Compounds, Nickel Compounds 40 CFR part 63 subpart
VVVVVV

Institutional/Commercial Boilers fired by coal, wood, and oil Acetaldehyde, Acrolein, Arsenic Compounds, Benzene, Beryllium Compounds, Cadmium Compounds, Chromium Compounds, Dioxins, Ethylene Dichloride, Formaldehyde, Lead Compounds, Manganese Compounds, Mercury Compounds, Nickel Compounds, Polycyclic Organic Matter 40 CFR part 63 subpart
JJJJJJ

Iron and Steel Foundries Cadmium Compounds, Chromium Compounds, Lead Compounds, Manganese Compounds, Nickel Compounds 40 CFR part 63 subpart
ZZZZZ

Lead Acid Battery Manufacturing Cadmium Compounds, Lead Compounds, Nickel Compounds 40 CFR part 63 subpart
PPPPPP

Medical Waste Incinerators Arsenic Compounds, Cadmium Compounds, Chromium Compounds, Dioxins, Formaldehyde, Lead Compounds, Manganese Compounds, Mercury 40 CFR 60 subpart Ec & 40 CFR part 62 subpart HHH12

Section 112(k) Source Category Name Urban HAP Code of Federal Regulations Part and Subpart Compounds, Nickel Compounds

Mercury Cell Chlor

- Alkali Plants Mercury Compounds 40 CFR part 63 subpart
IIIII

Metal Fabrication and Finishing: Electrical and Electronic Equipment Manufacturing Chromium Compounds, Lead Compounds, Manganese Compounds, Nickel Compounds, Trichloroethylene 40 CFR part 63 subpart
XXXXXX

Metal Fabrication and Finishing: Fabricated Metal Products Cadmium Compounds, Chromium Compounds, Lead Compounds, Manganese Compounds, Nickel Compounds, Trichloroethylene 40 CFR part 63 subpart
XXXXXX

Metal Fabrication and Finishing: Fabricated Plate Work (Boiler Shops) Chromium Compounds, Manganese Compounds, Nickel Compounds 40 CFR part 63 subpart
XXXXXX

Metal Fabrication and Finishing: Fabricated Structural Metal Manufacturing Chromium Compounds, Lead Compounds, Manganese Compounds, Nickel Compounds 40 CFR part 63 subpart
XXXXXX

Metal Fabrication and Finishing: Heating Equipment, Except Electric Chromium Compounds, Manganese Compounds, Nickel Compounds 40 CFR part 63 subpart
XXXXXX

Metal Fabrication and Finishing: Industrial Machinery and Equipment Manufacturing Chromium Compounds, Lead Compounds, Manganese Compounds, Nickel Compounds 40 CFR part 63 subpart
XXXXXX

Metal Fabrication and Finishing: Iron and Steel Forging Chromium Compounds, Manganese Compounds, Nickel Compounds 40 CFR part 63 subpart
XXXXXX

Metal Fabrication and Finishing: Primary Metal Products Manufacturing Cadmium Compounds, Chromium Compounds, Lead Compounds, Manganese Compounds, Nickel Compounds, Trichloroethylene 40 CFR part 63 subpart
XXXXXX

Metal Fabrication and Finishing: Valves & Pipe Fittings Cadmium Compounds, Chromium Compounds, Lead Compounds, Nickel Compounds, Trichloroethylene 40 CFR part 63 subpart
XXXXXX13

Section 112(k) Source Category Name Urban HAP Code of Federal Regulations Part and Subpart Misc Organic Chemical Manufacturing 1,3 Butadiene, 1,3

- Dichloropropane, Acetaldehyde, Beryllium Compounds, Cadmium Compounds, Chloroform, Chromium Compounds, Ethylene Dichloride, Hydrazine, Lead Compounds, Manganese Compounds, Mercury Compounds, Methylene Chloride, Nickel Compo unds, Quinoline 40 CFR part 63 subpart
VVVVVV

Municipal Landfills 1,1,2,2

- Tetrachloroethane, 1,2

- Dichloropropane, Acrylonitrile, Benzene, Chloroform, Ethylene Dichloride, Methylene Chloride, Polychlorinated biphenyls, Polycyclic Organic Matter, Tetrachloroethylene, Trichloroethylene, Vinyl Chloride 40 CFR part 63 subpart
AAAA

Hospital Ethylene Oxide Sterilizers Ethylene Oxide 40 CFR part 63 subpart
WWWWW

Nonferrous Foundries Chromium Compounds, Lead Compounds, Manganese Compounds, Nickel Compounds 40 CFR part 63 subpart
ZZZZZZ

Oil & Natural Gas Production Benzene 40 CFR part 63 subpart
HH

Paint and Allied Products Manufacture Benzene, Cadmium Compounds, Chromium Compounds, Lead Compounds, Manganese Compounds, Mercury Compounds, Methylene Chloride, Nickel Compounds 40 CFR part 63 subpart CCCCCCC

Paint Stripping Operations, Misc. Surface Coating, Autobody Refinishing Cadmium Compounds, Chloroform, Chromium Compounds, Lead Compounds, Manganese, Methylene Chloride, Nickel Compounds, Trichloroethylene 40 CFR part 63 subpart
HHHHHH14

Section 112(k) Source Category Name Urban HAP Code of Federal Regulations Part and Subpart

Pharmaceutical Production Arsenic Compounds, Chloroform, Ethylene Dichloride, Manganese Compounds, Methylene Chloride, Nickel Compounds 40 CFR part 63 subpart
VVVVVV

Plastic Materials and Resins Manufacturing 1,3 Butadiene, Acetaldehyde, Ethylene Dichloride, Hydrazine, Lead Compounds, Methylene Chloride 40 CFR part 63 subpart
VVVVVV

Plating and Polishing Arsenic Compounds, Cadmium Compounds, Chromium Compounds, Lead Compounds, Manganese Compounds, Nickel Compounds, Trichloroethylene 40 CFR part 63 subpart
WWWWWW

Portland Cement Arsenic Compounds, Beryllium Compounds, Cadmium Compounds, Chromium Compounds, Dioxins, Lead Compounds, Mercury Compounds, Polychlorinated Biphenyls 40 CFR part 63 subpart
LLL

Prepared Feeds Arsenic Compounds, Chromium Compounds, Manganese Compounds 40 CFR part 63 subpart
DDDDDDD

Pressed & Blown Glass Manufacturing. Arsenic Compounds, Cadmium Compounds, Chromium Compounds, Lead Compounds, Manganese Compounds, Nickel Compounds 40 CFR part 63 subpart SSSSSS

Primary Copper Smelting Arsenic Compounds, Cadmium Compounds, Chromium Compounds, Lead Compounds, Nickel Compounds 40 CFR part 63 subpart
EEEEEE

Primary Nonferrous Metal Arsenic Compounds, Cadmium Compounds, Chromium Compounds, Lead Compounds, Manganese Compounds, Nickel Compounds 40 CFR part 63 subpart GGGGGG15

Section 112(k) Source Category Name Urban HAP Code of Federal Regulations Part and Subpart Publicly Owned Treatment Works 1,1,2,2

- Tetrachloroethane, 1,2

- Dichloropropane, 1,3 Butadiene, Acetaldehyde, Acrolein,
Acr ylonitrile, Benzene, Chloroform, Ethylene Oxide, Formaldehyde, Methylene Chloride, Tetrachloroethylene, Trichloroethylene, Vinyl Chloride 40 CFR part 63 subpart
VVV

PVC & Copolymer Production Vinyl Chloride 40 CFR part 63 subpart
DDDDDD Reciprocating Internal Combustion Engines (RICE)

- Existing Compression Ignition, Existing Spark Ignition Acetaldehyde, Arsenic Compounds, Benzene, Beryllium Compounds, Cadmium Compounds, Chromium Compounds, Formaldehyde, Lead Compounds, Manganese Compounds, Mercury Com pounds, Polycyclic Organic Matter 40 CFR part 63 subpart
ZZZZ

Secondary Copper Smelting Cadmium Compounds, Dioxins, Lead Compounds 40 CFR part 63 subpart
FFFFFF Secondary Lead Smelting 1,1,2,2

- Tetrachloroethane, 1,3 Butadiene, 1,3

- Dichloropropane, Acetaldehyde, Acrolein, Arsenic, Benzene, Cadmium Compounds, Chloroform, Chromium Compounds, Dioxins, Formaldehyde, Lead Compounds, Manganese Compounds, Mercury Compounds, Nickel Compounds,
P olycyclic Organic Matter 40 CFR part 63 subpart
X

Secondary Non

- Ferrous Metals Arsenic Compounds, Cadmium Compounds, Chromium Compounds, Lead Compounds, Manganese Compounds, Mercury Compounds, Nickel Compounds 40 CFR part 63 subpart
TTTTTT

Sewage Sludge Incineration 1,1,2,2

- Tetrachloroethane, Acrylonitrile, Cadmium, Chromium, Dioxins, Lead Compounds, Manganese Compounds, Mercury Compounds, Nickel Compounds, Polychlorinated Biphenyls, 40 CFR part 60 subpart
MMMM16

Section 112(k) Source Category Name Urban HAP Code of Federal Regulations Part and Subpart Polycyclic Organic Matter

Small Municipal Waste Combustors Arsenic Compounds, Cadmium Compounds, Chromium Compounds, Dioxins, Formaldehyde, Lead Compounds, Manganese Compounds, Mercury Compounds, Nickel Compounds 40 CFR part 60 subpart AAAA & 40 CFR part 62 subpart JJJ

Stainless and Non

- stainless Steel Manufacturing (EAFs) Arsenic Compounds, Beryllium Compounds, Cadmium Compounds, Chromium Compounds, Lead Compounds, Manganese Compounds, Mercury Compounds, Nickel Compounds, Trichloroethylene 40 CFR part 63 subpart
YYYYY

Synthetic Rubber Manufacturing 1,3 Butadiene 40 CFR part 63 subpart
VVVVVV Wood Preserving Arsenic Compounds, Chromium Compounds, Dioxins, Methylene Chloride 40 CFR part 63 subpart QQQQQQ

Among the 30 urban HAP selected to fulfill the section 112(k) mandate, dioxins, POM,

and PCBs are actually groups of multiple compounds of similar structure. For the purposes of the

112(k) inventory, dioxins are represented by toxicity equivalents while PO M is represented by a

group of seven specific compounds included in the definition of POM that act as a surrogate.

These “7

- PAH” compounds 7 are classified as probable human carcinogens and were used for

determining that POM was one of the 30 pollutants tha t posed the highest risks for urban areas.

Additionally, 7

- PAH had a robust emissions inventory for urban area sources for the purposes of

section 112(k). A more detailed discussion on the selection of the 30 urban HAP and how they

7 The 7

- PAH compounds are: benz(a)anthracene, benzo(a)pyrene, benzo (b)fluoranthene, benzo(k)fluoranthene, chrysene, dibenz(a,h)anthracene, and indeno(1,2,3

- cd)pyrene17

are inventoried for the purpose of section 112(k) can be found on the EPA’s Technology

Transfer Network Area Source Standards webpage at

<http://www.epa.gov/ttn/atw/area/arearules.html>. Table II.2 lists the 30 urban HAP, the

percent subject to regulation, and the Code of Federa l Regulation parts and subparts used to

reach the regulated percentage.

Table II.2

– Regulated Percentages of 30 Urban HAP

Urban HAP Percent Subject to Regulation Code of Federal Regulations Part and

Subpart

1,1,2,2

- Tetrachloroethane 100.0% 40 CFR part 63 subparts X, VVV, AAAA, MMMM
1,2

- Dichloropropane 95.0% 41 CFR part 63 subparts VVV, AAAA

1,3 Butadiene 96.6% 40 CFR part 63 subparts X, VVV,
VVVVVV
1,3

- Dichloropropene 99.5% 40 CFR part 63 subparts X, VVVVVV

Acetaldehyde 92.5% 40 CFR part 63 subparts X, VVV, ZZZZ, JJJJJJ, VVVVVV

Acrolein 99.2% 40 CFR part 63 subparts X, VVV, JJJJJJ

Acrylonitrile 95.9% 40 CFR part 63 subparts VVV, AAAA, MMMM, LLLLLL Arsenic Compounds 99.7% 40 CFR part 63 subparts X, EEE, LLL ZZZZ, YYYYY, EEEEEE, GGGGGG, JJJJJJ, QQQQQQ, SSSSSS, TTTTTT, VVVVVV, WWWWWW,
DDDDDDD ; 40 CFR part 60 subpart
MMMM ; 40 CFR part 62 subparts HHH, JJJ; 40 CFR part 60 subparts Ec, AAAA
Benzene 93.7% 40 CFR part 63 subparts X, VVV, AAAA, ZZZZ, BBBBBB, HHHHHH, JJJJJJ, CCCCCCC

Beryllium Compounds 100.0% 40 CFR part 63 subparts EEE, LLL, ZZZZ, YYYYY, JJJJJJ, VVVVVV,
ZZZZZZ18 Urban HAP Percent Subject to Regulation Code of Federal Regulations Part and

Subpart
Cadmium Compounds 93.3% 40 CFR part 63 subparts X, EEE, LLL, ZZZZ, YYYYY, ZZZZZ, EEEEEE, FFFFFF, GGGGGG, HHHHHH, JJJJJJ, PPPPPP, SSSSSS, TTTTTT, VVVVVV, WWWWWW, XXXXXX, ZZZZZZ, BBBBBBB, CCCCCCC ; 40 CFR part 60 subpart MMMM; 40 CFR part 62 subparts HHH, JJJ; 40 CFR part 60 subparts Ec, AAAA
Chloroform 93.5% 40 CFR part 63 subparts X, VVV, AAAA, HHHHHH, VVVVVV
Chromium Compounds 90.1% 40 CFR part 63 subparts N, X, EEE, LLL, YYYYY, ZZZZZ, EEEEEE, GGGGGG, HHHHHH, JJJJJJ, QQQQQQ, SSSSSS, TTTTTT, VVVVVV, WWWWWW, XXXXXX, YYYYYY, ZZZZZZ, AAAAAAA, BBBBBBB, CCCCCCC, DDDDDDD; 40 CFR part 62 subparts HHH, JJJ; 40 CFR part 60 subparts Ec, MMMM,
A AAA Dioxins (2,3,7,8

- TCDD) 99.6% 40 CFR part 63 subparts X, EEE, LLL, FFFFFF, JJJJJJ ; 40 CFR part 62 subparts HHH, JJJ; 40 CFR part 60 subparts Ec, MMMM, AAAA

Ethylene Dichloride 93.2% 40 CFR part 63 subparts AAAA, BBBBBB, JJJJJJ, VVVVVV,
BBBBBBB Ethylene Oxide 93.5% 40 CFR part 63 subparts O, VVV, WWWWW, BBBBBBB Formaldehyde 95.0% 40 CFR part 63 subparts X, HHH, VVV, ZZZZ, JJJJJJ, 40 CFR part 62 subparts HHH, JJJ; 40 CFR part 60 subparts Ec, AAAA

Hexachlorobenzene 98.7% 40 CFR part 63 subpart VVVVVV Hydrazine 97.4% 40 CFR part 63 subpart VVVVVV19 Urban HAP Percent Subject to Regulation Code of Federal Regulations Part and

Subpart
Lead Compounds 90.3% 40 CFR part 63 subparts X, EEE, LLL, ZZZZ, YYYYY, BBBBBB, EEEEEE, FFFFFF, GGGGGG, HHHHHH, PPPPPP, RRRRRR, SSSSSS, TTTTTT, VVVVVV, WWWWWW, XXXXXX, ZZZZZZ, BBBBBBB, CCCCCCC, JJJJJJ; 40 CFR part 62 subparts HHH, JJJ; 40 CFR part 60 subparts Ec,
AAAA Manganese Compounds 90.0% 40 CFR part 63 subparts X, ZZZZ, YYYYY, GGGGGG, HHHHHH, JJJJJJ, RRRRRR, SSSSSS, TTTTTT, VVVVVV, WWWWWW, XXXXXX, ZZZZZZ, AAAAAAA, BBBBBBB, CCCCCCC, DDDDDDD ; 40 CFR part 62 subparts HHH, JJJ; 40 CFR part 60 subparts Ec, MMMM, AAAA Mercury Compounds 92.1% 40 CFR part 63 subparts X, EEE, LLL, ZZZZ, IIIII, YYYYY, JJJJJJ, TTTTTT, VVVVVV, AAAAAAA, CCCCCCC; 40 CFR part 62 subparts HHH, JJJ; 40 CFR part 60 subparts Ec, MMMM,
AAAA Methylene Chloride 92.5% 40 CFR part 63 subparts T, VVV, AAAA, HHHHHH, OOOOOO, QQQQQQ, VVVVVV, CCCCCCC
Nickel Compounds 90.0% 40 CFR part 63 subparts X, YYYYY, ZZZZZ, EEEEEE, HHHHHH, PPPPPP, RRRRRR, SSSSSS, TTTTTT, VVVVVV, WWWWWW, XXXXXX, ZZZZZZ, BBBBBBB, CCCCCCC, JJJJJJ; 40 CFR part 62 subparts HHH, JJJ; 40 CFR part 60 subparts Ec, MMMM, AAAA Polychlorinated biphenyls 91.0% 40 CFR part 63 subparts EEE, LLL, AAAA, JJJJJJ; 40 CFR part 60 subpart
MMMM
Polycyclic Organic Matter 93.1% 40 CFR part 63 subparts X, AAAA, ZZZZ, AAAAAA, JJJJJJ, MMMMMM,
YYYYYY ; 40 CFR part 60 subpart
MMMM Quinoline 100.0% 40 CFR part 63 subpart VVVVVV20 Urban HAP Percent Subject to Regulation Code of Federal Regulations Part and

Subpart
Tetrachloroethylene 99.0% 40 CFR part 63 subparts M, T, VVV,
AAAA Trichloroethylene 90.9% 40 CFR part 63 subparts T, VVV, AAAA, YYYYY, HHHHHH, WWWWWW, XXXXXX Vinyl Chloride 94.7% 40 CFR part 63 subparts VVV, AAAA,
DDDDDD