Interagency Review Material -- DRAFT Summary of RTR Residual Risks

Interagency Review Material - Provided in Response to OMB Request

This table is intended to be a summary of risk information provided in the RTR Federal Register notices for each covered RTR source category as of 10/21/11. It may be incomplete, it may contain errors, and may 

not reflect the precise details of the rules for each source category. For more detailed and accurate information check the appropriate Federal Register notice for information relevant to each source category.

Page 1

Rule

Dates Baseline risk (a, b) Risk after RTR (a, b)

Prop Final

MIR (in 1 

million)

(driver)

HI

(driver) Incidence

K Pop. 

> 10-6

Risk

Acceptability

Decision

Ample Margin of

Safety Decision Notes

MIR (in 1 

million)

(driver)

HI

(driver) Incidence

K Pop. 

> 10-6

Coke ovens 8/9/2004 4/15/2005

300

(coke oven 

emissions)

0.4 0.06 500 acceptable

adopt LAER limits 

for MACT-track 

sources

300

(coke oven 

emissions)

0.4 0.06 300

Gasoline 

Distribution 8/10/2005 4/6/2006 5(benzene) 0.2 0.004 6 acceptable no controls; repropose MACT

5

(benzene) 0.2 0.004 6

Cooling towers 10/24/2005 4/7/2006 0.4 0.002 NIA 0 acceptable no controls; repropose MACT 0.4 0.002 NIA 0

Hospital 

sterilizers 10/24/2005 4/7/2006 90(ethylene oxide) 0.03 0.04 250 acceptable no controls; repropose MACT

90

(ethylene oxide) 0.03 0.04 250

Mag tape 10/24/2005 4/7/2006 0.01 0.3 NIA 0 acceptable no controls; repropose MACT 0.01 0.3 NIA 0

Dry Cleaners 12/21/2005 7/27/2006 ----- ----- ----- ----- ----- ----- c ----- ----- ----- -----

major ----- -----

50-400

(perc)

2

(perc) NIA 40-400

"risks are 

acceptable 

after 

application of 

Option 1 

controls"

require enhanced 

LDAR

20-200

(perc) 0.2 0.002-0.003 2-55

area ----- -----

30-220

(perc) 0.1 0.4-4

960-

56,000 acceptable

require enhanced 

LDAR; eliminate 

transfer machines

20-200

perc) NIA NIA NIA

co-res ----- -----

4,000-30,000

(perc)

20

(perc) 0.2-2 NIA unacceptable eliminate PCE emissions d 0 0 0 0

HON 6/14/2006 12/21/2006

100

(many, see 

note)

1

(maleic 

anhydride)

0.14 2,000 acceptable no controls; repropose MACT e

100

(many, see note)

1

(maleic 

anhydride)

0.14 2,000
Interagency Review Material -- DRAFT Summary of RTR Residual Risks

Interagency Review Material - Provided in Response to OMB Request

This table is intended to be a summary of risk information provided in the RTR Federal Register notices for each covered RTR source category as of 10/21/11. It may be incomplete, it may contain errors, and may 

not reflect the precise details of the rules for each source category. For more detailed and accurate information check the appropriate Federal Register notice for information relevant to each source category.

Page 2

Rule

Dates Baseline risk (a, b) Risk after RTR (a, b)

Prop Final

MIR (in 1 

million)

(driver)

HI

(driver) Incidence

K Pop. 

> 10-6

Risk

Acceptability

Decision

Ample Margin of

Safety Decision Notes

MIR (in 1 

million)

(driver)

HI

(driver) Incidence

K Pop. 

> 10-6

Halogenated 

solvent cleaners

8/17/2006

10/20/08 NA

100

(perc, MC, 

TCE)

0.2 - 7.0 0.55 8,000 acceptable

proposed facilitywide emission limits 

on carcinogenic HAP 

from halogenated 

solvent cleaners

f

Petroleum 

refineries 9/4/2007 NA

70

(Bz, naph, 

POM, EDB

0.3 0.04-0.09 460 acceptable

proposed (1) no 

controls or (2) 

controls for storage 

vessels, EBUs, and 

cooling towers

g, h

Polysulfide 

Rubber 12/12/2007 12/16/2008 0 <.01 0 0 acceptable no controls; repropose MACT 0 <.01 0 0

Ethylene 

Propylene 

Rubber

12/12/2007 12/16/2008 0 0.5 0 0 acceptable no controls; repropose MACT 0 0.5 0 0

Butyl Rubber 12/12/2007 12/16/2008 0 0.2 0 0 acceptable no controls; repropose MACT 0 0.2 0 0

Neoprene 12/12/2007 12/16/2008 0 0.8 0 0 acceptable no controls; repropose MACT 0 0.8 0 0

Epoxy Resins 12/12/2007 12/16/2008 0.1 0.08 0.00002 0 acceptable no controls; repropose MACT 0.1 0.08 0.00002 0

Non-nylon 

Polyamides 12/12/2007 12/16/2008 0.4 0.3 0.00003 0 acceptable no controls; repropose MACT 0.4 0.3 0.00003 0

Acetal Resins 12/12/2007 12/16/2008 0.3 0.2 0.00004 0 acceptable no controls; repropose MACT 0.3 0.2 0.00004 0

Hydrogen 

Fluoride 12/12/2007 12/16/2008 0 <.01 0 0 acceptable no controls; repropose MACT 0 <.01 0 0

Marine Tank 

Vessel Loading 10/21/2010 4/21/2011 20(benzene) 0.3 0.02 140 acceptable no controls; repropose MACT i

50

(benzene) 0.3 0.02 140

Pharmaceuticals 10/21/2010 4/21/2011

3

(ethylene 

dichloride)

0.2 0.0008 2 acceptable no controls; repropose MACT

3

(ethylene 

dichloride)

0.2 0.0008 2
Interagency Review Material -- DRAFT Summary of RTR Residual Risks

Interagency Review Material - Provided in Response to OMB Request

This table is intended to be a summary of risk information provided in the RTR Federal Register notices for each covered RTR source category as of 10/21/11. It may be incomplete, it may contain errors, and may 

not reflect the precise details of the rules for each source category. For more detailed and accurate information check the appropriate Federal Register notice for information relevant to each source category.

Page 3

Rule

Dates Baseline risk (a, b) Risk after RTR (a, b)

Prop Final

MIR (in 1 

million)

(driver)

HI

(driver) Incidence

K Pop. 

> 10-6

Risk

Acceptability

Decision

Ample Margin of

Safety Decision Notes

MIR (in 1 

million)

(driver)

HI

(driver) Incidence

K Pop. 

> 10-6

Printing & 

Publishing 10/21/2010 4/21/2011 4(ethyl benzene) 0.08 0.0006 0.3 acceptable no controls; repropose MACT

4

(ethyl benzene) 0.08 0.0006 0.3

Epichlorohydrin 

Elastomers 

Production

10/21/2010 4/21/2011 10

(ethylene oxide) 0.1 0.0001 0.8 acceptable no controls; repropose MACT

10

(ethylene oxide) 0.1 0.0001 0.8

HypalonTM 

Production 10/10/2008 4/21/2011

1

(carbon 

tetrachloride)

0.1 0.0004 0.4 acceptable no controls; repropose MACT j NA NA NA NA

Nitrile 

Butadiene 

Rubber 

Production

10/21/2010 4/21/2011

2

(acrylonitrile, 

1,3-butadiene)

0.009 0.0004 0.07 acceptable no controls; repropose MACT

2

(acrylonitrile, 

1,3-butadiene)

0.009 0.0004 0.07

Polybutadiene 

Rubber 

Production

10/21/2010 4/21/2011 30

(1,3-butadiene) 0.3 0.003 24 acceptable no controls; repropose MACT

30

(1,3-butadiene) 0.3 0.003 24

Styrene 

Butadiene 

Rubber and 

Latex 

Production

10/21/2010 4/21/2011 10

(1,3-butadiene) 0.2 0.004 25 acceptable no controls; repropose MACT

10

(1,3-butadiene) 0.2 0.004 25

Steel Pickling --

HCl Process 

Facilities and 

Hydrochloric 

Acid 

Regeneration 

Plants

10/21/2010 NA 2

(chlorine) NA 0.05(HI>1) acceptable no controls; repropose MACT l

Hard Chromium 

Electroplating 10/21/2010 70(Cr VI) 0.06 0.1-0.8 360-14,200 acceptable no controls; repropose MACT k, l
Interagency Review Material -- DRAFT Summary of RTR Residual Risks

Interagency Review Material - Provided in Response to OMB Request

This table is intended to be a summary of risk information provided in the RTR Federal Register notices for each covered RTR source category as of 10/21/11. It may be incomplete, it may contain errors, and may 

not reflect the precise details of the rules for each source category. For more detailed and accurate information check the appropriate Federal Register notice for information relevant to each source category.

Page 4

Rule

Dates Baseline risk (a, b) Risk after RTR (a, b)

Prop Final

MIR (in 1 

million)

(driver)

HI

(driver) Incidence

K Pop. 

> 10-6

Risk

Acceptability

Decision

Ample Margin of

Safety Decision Notes

MIR (in 1 

million)

(driver)

HI

(driver) Incidence

K Pop. 

> 10-6

Decorative 

Chromium 

Electroplating

10/21/2010 70

(Cr VI) 0.06 0.01-0.08 30-390 acceptable no controls; repropose MACT l

Chromium 

Anodizing 

Tanks

10/21/2010 5

(Cr VI) 0.004 0.001-0.003 0.5-2.7 acceptable no controls; repropose MACT l

Shipbuilding & 

Ship Repair 

(surface coating)

12/21/2010 10/31/2011 10

(ethyl benzene)

0.5

(xylenes) 0.003 4 acceptable no controls; repropose MACT

10

(ethyl benzene)

0.5

(xylenes) 0.003 3.7

Wood Furniture 

Manufacturing 

Operations

12/21/2010 10/31/2011 20

(formaldehyde)

0.4

(hexane) 0.005 20 acceptable

proposed 

formaldehyde 

emission limit

10

(ethyl benzene, 

formaldehyde)

0.4 

(hexane) 0.005 20

Primary Lead 

Production 2/17/2011 10/31/2011 30(cadmium)

1 

(cadmium)

50 (lead)

0.0008 4.9

unacceptable 

(primarily 

due to lead)

to get to acceptable 

level, proposed stack

emission cap and air 

lead concentration 

limit in order to 

reduce ambient air 

concentrations to 

NAAQS level; no 

additional controls 

for AMOS

20

(cadmium)

1 (cadmium)

8 (lead) 0.008 110
Interagency Review Material -- DRAFT Summary of RTR Residual Risks

Interagency Review Material - Provided in Response to OMB Request

This table is intended to be a summary of risk information provided in the RTR Federal Register notices for each covered RTR source category as of 10/21/11. It may be incomplete, it may contain errors, and may 

not reflect the precise details of the rules for each source category. For more detailed and accurate information check the appropriate Federal Register notice for information relevant to each source category.

Page 5

Rule

Dates Baseline risk (a, b) Risk after RTR (a, b)

Prop Final

MIR (in 1 

million)

(driver)

HI

(driver) Incidence

K Pop. 

> 10-6

Risk

Acceptability

Decision

Ample Margin of

Safety Decision Notes

MIR (in 1 

million)

(driver)

HI

(driver) Incidence

K Pop. 

> 10-6

Secondary Lead 

Smelting 5/19/2011 50(arsenic)

0.6 

(arsenic)

20 (lead)

0.02 128

unacceptable 

(primarily 

due to lead, 

allowable 

cancer risk of 

200 in a 

million)

to get to acceptable 

level, proposed to 

reduce stack emis by 

factor of 2 for nonlead HAP and order 

of magnitude for lead 

stack emis; no 

additional controls 

for AMOS

for fugitives - total 

enclosure or develop 

monitoring program

10

(arsenic) 0.6 (arsenic)

1 (lead)

0.01

Oil and Natural 

Gas Production 8/23/2011

40

(POM, 

benzene)

0.1

(naphthale

ne)

0.007-0.02 160

unacceptable 

due to 

allowable 

emissions 

from glycol 

dehydrators 

(400 in a 

million), but 

acceptable 

based on 

actuals

proposed to eliminate 

the alternative 

compliance option 

from existing glycol 

dehydrator MACT 

requirements

g

Natural Gas 

Transmission 

and Storage

8/23/2011 30-90

(benzene)

0.4

(benzene)

0.0003-

0.001 2.5 acceptable

proposed to eliminate 

the alternative 

compliance option 

from existing glycol 

dehydrator MACT 

requirements

g 30-90 0.4 0.0003-

0.001 2.5
Interagency Review Material -- DRAFT Summary of RTR Residual Risks

Interagency Review Material - Provided in Response to OMB Request

This table is intended to be a summary of risk information provided in the RTR Federal Register notices for each covered RTR source category as of 10/21/11. It may be incomplete, it may contain errors, and may 

not reflect the precise details of the rules for each source category. For more detailed and accurate information check the appropriate Federal Register notice for information relevant to each source category.

Page 6

Rule

Dates Baseline risk (a, b) Risk after RTR (a, b)

Prop Final

MIR (in 1 

million)

(driver)

HI

(driver) Incidence

K Pop. 

> 10-6

Risk

Acceptability

Decision

Ample Margin of

Safety Decision Notes

MIR (in 1 

million)

(driver)

HI

(driver) Incidence

K Pop. 

> 10-6

Ferroalloys 

Production 10/31/2011

80

(arsenic, nickel, 

Cr VI)

90

(manganes

e)

0.002 26 unacceptable

to get to acceptable 

level, proposed to 

reduce fugitive 

emissions by total 

enclosure (or 

fenceline 

monitoring); no 

additional controls 

for AMOS

m

5

(arsenic,

nickel, Cr 6)

2

(Mn) 0.0004 1,300

Mineral Wool 

Production 10/31/2011 4(formaldehyde)

0.04

(formaldeh

yde)

0.0004 1.7 acceptable no controls; repropose MACT

Wool Fiberglass 10/31/2011 40

(Cr VI)

0.2

(formaldeh

yde)

0.05 850 acceptable

proposed limit on lbs 

of total chromium 

compounds per ton of 

glass pulled

n

20

(formaldehyde)

0.2

(formaldehy

de)

0.02 282

Primary 

Aluminum 10/31/2011 30(PAH)

0.4

(HF) 0.005 41 acceptable

after proposed 

controls allowable 

cancer risk will be 30 

in 1 million; AMOS 

achieved

30 

(PAH)

0.4

(HF) 0.005 41

Notes:

Information in italics has not yet been published in the Federal Register and is still considered draft.

(a) Risks are based on actual emissions and are scaled up to represent the entire universe of facilities, where applicable

(b) NIA = no information available; NA = not applicable

(c) ranges of risk values due to range in perchloroethylene UREs

(d) preamble never explicitly said risks were unacceptable; this is actually an acceptability decision, not an ample margin of safety decision

(e) for the facilities with risks greater than 10 in 1 million, drivers include: ethylene oxide, 1,3-butadiene, benzene, 4,4-methylenedianiline, acrylonitrile, and ethylene dichloride

(f) re-proposed and then remanded

(g) range of values due to range of benzene UREs
Interagency Review Material -- DRAFT Summary of RTR Residual Risks

Interagency Review Material - Provided in Response to OMB Request

This table is intended to be a summary of risk information provided in the RTR Federal Register notices for each covered RTR source category as of 10/21/11. It may be incomplete, it may contain errors, and may 

not reflect the precise details of the rules for each source category. For more detailed and accurate information check the appropriate Federal Register notice for information relevant to each source category.

Page 7

Rule

Dates Baseline risk (a, b) Risk after RTR (a, b)

Prop Final

MIR (in 1 

million)

(driver)

HI

(driver) Incidence

K Pop. 

> 10-6

Risk

Acceptability

Decision

Ample Margin of

Safety Decision Notes

MIR (in 1 

million)

(driver)

HI

(driver) Incidence

K Pop. 

> 10-6

(h) the final rule was withdrawn; not on RTR website; new proposal expected 12/15/11

(i) corrected emissions data received during comment period resulted in an increase in the source category MIR

(j) the one remaining Hypalon TM facility closed between original proposal and supplemental proposal

(k) range of incidence & pop exp #s due to conservative & supplemental analyses

(l) re-proposal expected January 2010

(m) as a MACT "fix," also proposed limits for HCl, HF, and formaldehyde and ACI for Hg; as part of control technology review, proposed lower stack emission limits

(n) as a MACT "fix," limits were also set for formaldehyde to address MACT-era HAP surrogacy issue