HISTORICAL SUMMARY OF THE FEDERAL

RECOMMENDED

(Updated: November 10, 2015)

Beginning in 1977, USEPA’s

Recommended Policy on the Control of Volatile Organic

Compounds

(Recommended Policy) exempt certain chemical compounds from the definition of

VOC or VOM.

1

These compounds were exempt due to their negligible photochemical reactivity

(

i.e.

, their reduced capacity for partaking in the complex atmospheric chemical reactions that

result in the formation in tropospheric ozone). Ultimately, in 1991, USEPA codified its

Recommended Policy in the

Code of Federal Regulations

at 40 C.F.R. 51.100(s) in its definition

of VOC.

Specifically, on July 8, 1977, USEPA established its Recommended Policy in the

Federal

Register

at 42 Fed. Reg. 35314. At that time, USEPA stated that the following compounds

should be exempt from regulation due to their negligible photochemical reactivity:

dichloromethane (methylene chloride) (CAS No. 75-09-2)

2

;

ethane (CAS No. 74-84-0);

methane (CAS No. 74-82-8);

1,1,1-trichloroethane (methyl chloroform) (CAS No. 71-55-6); and

1,1,2-trichloro-1,2,2-trifluoroethane (CFC-113 or Freon 113) (CAS No. 76-13-1)

3

.

USEPA clarified its policy on June 4, 1979, at 44 Fed. Reg. 32043, and May 16, 1980, at 45 Fed.

Reg. 32424.

USEPA later amended its Recommended Policy by adding exempt compounds. On July

22, 1980, at 45 Fed. Reg. 48941, USEPA added five chlorofluorocarbons (CFCs) and one

fluorocarbon (FC)

4

:

1

USEPA consistently uses the term “VOC” rather than “VOM,” but both designations refer to

the same matter. All references in this opinion and order to “VOM” refer to what USEPA calls

“VOC.”

2

USEPA’s July 8, 1977 discussion mentioned methylene chloride and several other compounds,

but none was included in either Table 1, which actually listed the recommended-exempt

compounds, and methylene chloride did not appear in Table 2, which listed low-reactivity

compounds. However, the June 4, 1979 and May 16, 1980 clarifications and later amendments

make it clear that USEPA considered methylene chloride exempt as of the initial publication of

the Recommended Policy on July 8, 1977.

3

Use of the designation “CFC-113” does not include the isomer 1,1,1-trichloro-2,2,2-trifluoro-

ethane (CFC-113) (CAS No. 354-58-5) and mixed isomers (CAS No. 26523-64-8).

---

chlorodifluoromethane (CFC-22) (CAS No. 75-45-6);

chloropentafluoroethane (CFC-115) (CAS Nos. 76-15-3);

dichlorodifluoromethane (CFC-12) (CAS No. 75-71-8);

1,2-dichlorotetrafluoroethane (CFC-114) (CAS No. 76-14-2)

5

;

trichlorofluoromethane (CFC-11) (CAS No. 75-69-4); and

trifluoromethane (FC-23) (CAS No. 75-46-7).

On January 18, 1989, at 54 Fed. Reg. 1987, USEPA added four hydrohalocarbon

compounds (HFCs and HCFCs) to the list of those exempt:

1-chloro-1,1-difluoroethane (HCFC-142b) (CAS No. 75-68-3)

6

.

1,1-dichloro-1-fluoroethane (HCFC-141b) (CAS No. 1717-00-6)

7

;

1,1-dichloro-2,2,2-trifluoroethane (HCFC-123) (CAS No. 306-83-2)

8

; and

1,1,1,2-tetrafluoroethane (HFC-134a) (CAS No. 811-97-2)

9

;

Finally, on March 18, 1991, at 52 Fed. Reg. 11418, USEPA revisited certain compounds

earlier denied exemption and revised the Recommended Policy for the last time, to exclude five

additional hydrohalocarbon compounds and four classes of fluorocarbon compounds. The five

hydrohalocarbon compounds were:

4

This action purported to add trichlorotrifluoroethane (CFC-113), but that compound was

originally listed on July 8, 1977, although then given the parenthetical designation “Freon-113.”

That USEPA counted this single compound twice was further apparent in the action of January

18, 1989, discussed in the text below, when it referred to a list of exempt compounds that

included “eight additional chlorofluorocarbons (CFCs).”

5

Use of the designation “CFC-114” does not include the isomer 1,1-dichlorotetrafluoroethane

(CFC-114a) (CAS No. 374-07-2) and mixed isomers (CAS No. 1320-37-2).

6

Use of the designation “HCFC-142b” does not include the isomers 1-chloro-1,2-difluoroethane

(HCFC-142a) (CAS No. 338-64-7) and 1-chloro-2,2-difluoroethane (CAS No. 338-65-8) and

mixed isomers (CAS No. 25497-29-4).

7

Use of the designation “HCFC-141b” does not include the isomers 1,2-dichlorofluoroethane

(HCFC-141) (CAS No. 430-57-9) and 1,1-dichloro-2-fluoroethane (HCFC-141a) (CAS No. 430-

53-5) and mixed isomers (CAS No. 25167-88-8).

8

Use of the designation “HCFC-123” does not include the isomers 1,2-dichlorotrifluoroethane

(HCFC-123a) (CAS No. 354-23-4) and 1,1-dichloro-1,2,2-trifluoroethane (HCFC-123b) (CAS

No. 812-04-4) and mixed isomers (CAS No. 34077-87-7). There is a separate exclusion for the

1,2-dichlorotrifluoroethane (HCFC-123a) isomer. See text at note 14 below.

9

Use of the designation “HFC-134a” does not include the isomer 1,1,2,2-tetrafluoroethane

(HFC-134) (CAS No. 359-35-3) and mixed isomers (CAS No. 29759-38-4). There is a separate

exclusion for the isomer 1,1,2,2-tetrafluoroethane (HFC-134). See text at note 12 below.

---

1-chloro-1,2,2,2-tetrafluoroethane (HCFC-124) (CAS No. 2837-89-0)

10

;

1,1-difluoroethane (HFC-152a) (CAS No. 75-37-6)

11

.

pentafluoroethane (HFC-125) (CAS No. 354-33-6);

1,1,2,2-tetrafluoroethane (HFC-134) (CAS No. 359-35-3)

12

;

1,1,1-trifluoroethane (HFC-143a) (CAS No. 420-46-2)

13

; and

The four classes of fluorocarbon compounds were:

cyclic, branched, or linear, completely-fluorinated alkanes;

cyclic, branched, or linear, completely-fluorinated ethers with no unsaturations;

cyclic, branched, or linear, completely-fluorinated tertiary amines with no unsaturations;

and

sulfur-containing perfluorocarbons with no unsaturations and with sulfur bonds only to

carbon and fluorine.

On March 18, 1991, at 56 Fed. Reg. 11387, USEPA proposed codifying the

Recommended Policy in its definition of VOC at 40 C.F.R. 51.100(s). This proposed action was

undertaken in conjunction with the last amendments to the Recommended Policy discussed

above. USEPA adopted the amended definition of VOC on February 3, 1992, at 57 Fed. Reg.

3945. This USEPA codification included all the compounds and classes of compounds

previously included as exempt in the Recommended Policy. It also included test methods for

determining compliance with the VOC emissions limits, and a provision addressing situations

where the test method also measured exempt compounds.

USEPA subsequently amended the 40 C.F.R. 51.100(s) definition of VOM on a number

of occasions. Those are summarized as follows:

10

Use of the designation “HCFC-124” does not include the isomer 1-chloro-1,1,2,2-tetrafluoro-

ethane (HCFC-124a) (CAS No. 354-25-6) and mixed isomers (CAS No. 63938-10-3).

11

Use of the designation “HFC-152a” does not include the isomer 1,2-difluoroethane (HFC-152)

(CAS No. 624-72-6) and mixed isomers (CAS No. 27987-06-0).

12

See note 9 above.

13

Use of the designation “HFC-143a” does not include the isomer 1,1,2-trifluoroethane (HFC-

143) (CAS No. 430-66-0) and mixed isomers (CAS No. 27987-06-0).

---

Date of Amendment

(Federal Citation)

(Board Docket)

October 5, 1994

(59 Fed. Reg. 50696)

1-chloro-4-(trifluoromethyl)benzene (p-chloro-

benzotrifluoride, PCBTF) (CAS No. 98-56-6)

cyclic, branched, or linear completely-

methylated siloxanes

July 12, 1995

(R95-2)

June 16, 1995

(60 Fed. Reg. 31633)

propan-2-one (acetone or dimethylketone) (CAS

No. 67-64-1)

October 19, 1995

(R95-16)

February 7, 1996

(61 Fed. Reg. 4588)

tetrachloroethene (tetrachloroethylene,

perchloroethylene) (CAS No. 127-18-4)

February 6, 1997

(R96-16)

October 8, 1996

(61 Fed. Reg. 52847)

1,1,1,2,3,4,4,5,5,5-decafluoropentane (HFC 43-

10mee) (CAS No. 138495-42-8)

1,3-dichloro-1,1,2,2,3-pentafluoropropane

(HCFC-225cb) (CAS No. 507-55-1)

3,3-dichloro-1,1,1,2,2-pentafluoropropane

(HCFC-225ca) (CAS No. 422-56-0)

May 16, 1997

(R97-17)

---

August 22, 1997

(62 Fed. Reg. 44900)

1-chloro-1-fluoroethane (HCFC-151a) (CAS No.

1615-75-4)

chlorofluoromethane (HCFC-31) (CAS No. 593-

70-4)

1,2-dichloro-1,1,2-trifluoroethane (HCFC-123a)

(CAS No. 354-23-4)

14

difluoromethane (HFC-32) (CAS No. 75-10-5)

2-(difluoromethoxymethyl)-1,1,1,2,3,3,3-

heptafluoropropane ((CF

3

)

2

CFCF

2

OCH

3

) (CAS

No. 163702-08-7)

2-(ethoxydifluoromethyl)-1,1,1,2,3,3,3-

heptafluoropropane ((CF

3

)

2

CFCF

2

OC

2

H

5

) (CAS

No. 163702-06-5)

1-ethoxy-1,1,2,2,3,3,4,4,4-nonafluorobutane

(C

4

F

9

OC

2

H

5

or HFE-7200) (CAS No. 163702-

05-4)

fluoroethane (HFC-161) (CAS No. 353-36-3)

1,1,1,2,3,3-hexafluoropropane (HFC-236ea)

(CAS No. 431-63-0)

1,1,1,3,3,3-hexafluoropropane (HFC-236fa)

(CAS No. 690-39-1)

1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxybutane

(C

4

F

9

OCH

3

or HFE-7100) (CAS No. 163702-

07-6)

1,1,1,3,3-pentafluorobutane (HFC-365mfc)

(CAS No. 406-58-6)

1,1,2,2,3-pentafluoropropane (HFC-245ca)

(CAS No. 679-86-7)

1,1,2,3,3-pentafluoropropane (HFC-245ea)

(CAS No. 24270-66-4)

1,1,1,2,3-pentafluoropropane (HFC-245eb)

(CAS No. 431-31-2)

1,1,1,3,3-pentafluoropropane (HFC-245fa) (CAS

No. 460-73-1)

June 22, 1998

(R98-17)

---

Date of Amendment

(Federal Citation)

(Board Docket)

April 9, 1998

(63 Fed. Reg. 17331)

methyl ethanoate (ethyl acetate) (CAS No. 79-

20-9)

June 22, 1998

(R98-17)

November 29, 2004

(69 Fed. Reg. 69290)

3-ethoxy-1,1,1,2,3,4,4,5,5,6,6,6-dodecafluoro-2-

(trifluoromethyl)hexane (HFE-7500) (CAS No.

297730-93-9)

1,1,1,2,2,3,3-heptafluoro-3-methoxypropane

(HFE-7000) (CAS No. 375-03-1)

1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea)

(CAS No. 431-89-0)

methyl methanoate (methyl formate) (CAS No.

107-31-3)

May 23, 2005

(R05-16)

November 29, 2004

(69 Fed. Reg. 69298)

1,1-dimethylethyl acetate (

t

-butyl acetate) (CAS

No. 540-88-5)

15

May 23, 2005

(R05-16)

January 18, 2007

(72 Fed. Reg. 69298)

1,1,1,2,2,3,4,5,5,5-decafluoro-3-methoxy-4-

(trifluoromethyl)pentane (HFE-7300 and L-

14787) (CAS No. 132182-92-4)

January 16, 2008

(R08-6)

January 21, 2009

(74 Fed. Reg. 3437)

dimethyl carbonate (CAS No. 616-38-6)

4-methyl-1,3-dioxolan-2-one (propylene

carbonate) (CAS No. 108-32-7)

January 11, 2010

(R10-7)

June 22, 2012

77 Fed. Reg. 37610

(1

E

)-1,3,3,3-tetrachloropro-1-pene (HFO-

1234ze) (CAS No. 29118-24-9)

January 24, 2013

(R13-1)

14

See note 8 above.

15

USEPA excluded

t

-butyl acetate from the definition of VOC for purposes of emissions control

and VOC content requirements. USEPA retained

t

-butyl acetate as a VOC for purposes of

recordkeeping, emissions reporting, photochemical dispersion modeling, and inventory

requirements.

---

Date of Amendment

(Federal Citation)

(Board Docket)

February 12, 2013

77 Fed. Reg. 37610

bis(difluoromethoxy)(difluoro)methane

(CHF

2

OCF

2

OCHF

2

or HFE-236cal2) (CAS No.

78522-47-1)

bis(difluoromethyl) ether (oxybis(difluoro-

methane), (difluoromethoxy)(difluoro)methane,

1,1,1',1'-tetrafluorodimethyl ether) (CHF

2

OCHF

2

or HFE-134) (CAS No. 1691-17-4)

1,2-bis(difluoromethoxy)-1,1,2,2-tetrafluoro-

ethane (CHF

2

OCF

2

CF

2

OCHF

2

or HFE-

338pcc13) (CAS No. 188690-78-0)

1-(difloromethoxy)-2-[(difluoromethoxy)-

difluoromethoxy]-1,1,2,2-tetrafluoroethane

(CHF

2

OCF

2

OCF

2

CF

2

OCHF

2

or HFE-43-

10pccc124) (CAS No. 188690-77-9)

November 21,

2013

(R14-7)

August 28, 2013

78 Fed. Reg. 53029

(1

E

)-1-chloro-3,3,3-trifluoroprop-1-ene (Solstice

1233zd(E)) (CAS No. 102687-65-0)

November 21,

2013

R14-7)

October 22, 2013

78 Fed. Reg. 62451

2,3,3,3-tetrafluoropropene (CAS 754-12-1)

June 5, 2014

(R14-16)

March 27, 2014

79 Fed. Reg. 17037

2-amino-2-methylpropan-1-ol (AMP) (CAS 124-

68-5)

March 5, 2015

(R15-5)

THE ILLINOIS DEFINITION OF VOM

Public Act 80-1299, effective August 2, 1978, added Section 9.1 to the Act. Subsection

(e) of Section 9.1 (formerly subsection (c)) requires the Board to incorporate exemptions into the

Illinois definition of VOM based on the federal exemptions. This provision required the Board

to use the Section 7.2 identical-in-substance procedure (exempt from Section 27 of the Act (415

ILCS 5/27 (2002) and the notice provisions of the APA) to incorporate the federal exemptions

into the Illinois definition of VOM.

The Board initially adopted the exemptions as part of Section 27 general rulemakings. In

dockets R78-3 and R78-4 (consolidated), on August 23, 1979, as part of the original Reasonably

Available Control Technology (RACT) rules, the Board adopted a definition of VOM that

excluded methane and ethane, expressly declining to exempt methylene chloride, 1,1,1-

trichloroethane, and CFC-113. In docket R80-5, on December 30, 1982, as part of the RACT II

rules, the Board added methylene chloride and 1,1,1-trichloroethane to the list of exempt

---

compounds. Finally, in docket R86-37, on December 22, 1987, the Board added the other six

CFC and one FC compounds that USEPA had excluded in its Recommended Policy up to that

date.

After that time, the Board repeatedly used the identical-in-substance procedure to

incorporate federal additions to the list of exempt compounds. In docket R89-8, on October 18,

1989, the Board amended the definition of VOM to exempt the additional compounds excluded

by USEPA on January 18, 1989. In docket R91-10, on September 12, 1991, the Board added the

one HCFC, four HFCs, and four classes of compounds exempt by USEPA on March 18, 1991.

In docket R91-24, on July 30, 1992, the Board further updated the Illinois definition of VOM for

purposes of the metropolitan Chicago and East St. Louis areas.

16

Beginning in 1992, with USEPA’s codification of the compounds excluded from VOC,

the Board had a way to readily determine the status of the list of exempt compounds: by

referring to the “List of Sections Affected” in the

Code of Federal Regulations

. At that time, the

Board started treating the updates to the definition of VOM in the same manner that the Board

treats all other identical-in-substance subject matters. The Board began routinely reserving

dockets for each succeeding six-month period and specifically monitoring for federal revisions.

Accordingly, the Board has opened several dockets assigned to this subject matter, and the Board

has dismissed dockets when USEPA did not amend its definition in the relevant time-frame.

Before USEPA’s codification of excluded compounds, the Board relied on the Illinois

Environmental Protection Agency and the regulated community to specifically draw the Board’s

attention to any amendments to USEPA’s Recommended Policy. The Board has consistently

worked to ensure that the Illinois definition of VOM is the same as that used by USEPA, and that

any federal revisions are promptly reflected in the Illinois definition.

What follows is a summary listing of all Board dockets related to exemptions from the

definition of VOM. This table indicates the docket number of each proceeding, the date and

nature of the Board action on each docket, and the general subject matter of each. Those entries

that appear in bold italic amended the definition of VOM to exempt new compounds.

Docket

R78-4

Adopted August 23, 1979. (RACT regulations (general rulemaking);

methane (CAS No. 74-82-8)

16

The amendments in docket R91-24 extended the exemptions to the definitions of VOM

formerly found in 35 Ill. Adm. Code 218 and 219, which the Board added in dockets R91-7 and

R91-8, on July 25, 1991. However, in docket R93-9, on September 9, 1993, the Board

consolidated all definitions into 35 Ill. Adm. Code 211.

---

Board

Docket

R80-5

R86-37

1,1,2-trichloro-1,2,2-trifluoroethane (CFC-113, Freon 113) (CAS No.

R89-8

1,1,1,2-tetrafluoroethane (HFC-134a) (CAS No. 811-97-2)

---

Board

Docket

R91-10

exempting:

1-chloro-1,2,2,2-tetrafluoroethane (HCFC-124, 2-chloro-1,1,1,2-tetra-

cyclic, branched, or linear, completely fluorinated ethers with no

unsaturations

cyclic, branched, or linear, completely fluorinated tertiary amines

with no unsaturations

sulphur-containing perfluorocarbons with no unsaturations and

R91-24

areas and responded to the February 3, 1992 USEPA codification of the

exemptions)

R92-6

Dismissed April 9, 1992. (No USEPA amendments during July 1, 1991 through

December 31, 1991)

R92-15

Dismissed August 13, 1992. (No USEPA amendments during January 1, 1992

through June 30, 1992)

R93-3

Dismissed January 21, 1993. (No USEPA amendments during July 1, 1992

through December 31, 1992)

R93-21

Dismissed September 23, 1993. (No USEPA amendments during January 1,

1993 through June 30, 1993)

R94-3

Dismissed March 31, 1994. (No USEPA amendments during July 1, 1993

through December 31, 1993)

R94-22

Dismissed October 6, 1994. (No USEPA amendments during January 1, 1994

through June 30, 1994)

---

Board

Docket

R95-2

December 31, 1994), exempting:

1-chloro-4-(trifluoromethyl)benzene (p-chlorobenzotrifluoride,

R95-16

propan-2-one (acetone or dimethylketone) (CAS No. 67-64-1)

R96-6

Dismissed February 15, 1996. (No USEPA amendments during July 1, 1995

R96-16

tetrachloroethene (perchloroethylene) (CAS No. 127-18-4)

R97-1

Dismissed October 17, 1996. (USEPA amendments during January 1, 1995

through June 30, 1995: those of February 7, 1996 were included in docket

R97-17

1,1,1,2,3,4,4,5,5,5-decafluoropentane (HFC 43-10mee) (CAS No.

1,3-dichloro-1,1,2,2,3-pentafluoropropane (HCFC-225cb) (CAS No.

3,3-dichloro-1,1,1,2,2-pentafluoropropane (HCFC-225ca) (CAS No.

422-56-0)

R98-1

Dismissed August 7, 1997. (No USEPA amendments during January 1, 1997

through June 30, 1997)

---

Board

Docket

R98-17

difluoromethane (HFC-32) (CAS No. 75-10-5)

2-(difluoromethoxymethyl)-1,1,1,2,3,3,3-heptafluoropropane

((CF

3

)

2

CFCF

2

OCH

3

) (CAS No. 163702-08-7)

2-(ethoxydifluoromethyl)-1,1,1,2,3,3,3-heptafluoropropane

((CF

3

)

2

CFCF

2

OC

2

H

5

1-ethoxy-1,1,2,2,3,3,4,4,4-nonafluorobutane (C

4

F

9

OC

2

H

5

methyl ethanoate (ethyl acetate) (CAS No. 79-20-9)

1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxybutane (C

4

F

OCH

3

1,1,2,3,3-pentafluoropropane (HFC-245ea) (CAS No. 24270-66-4)

R99-5

Dismissed August 20, 1998. (USEPA amendments during January 1, 1998,

through June 30, 1998: those of April 9, 1998 were included in docket R98-17)

R99-11

Dismissed February 18, 1999. (No USEPA amendments during July 1, 1998,

and December 31, 1998)

R00-1

Dismissed August 19, 1999. (No USEPA amendments during January 1, 1999,

through June 30, 1999)

R00-9

Dismissed February 17, 2000. (No USEPA amendments during July 1, 1999,

through December 31, 1999)

---

Board

Docket

Board Action and Date. (Explanation/Docket Contents)

R01-6

Dismissed July 27, 2000. (No USEPA amendments during January 1, 2000,

through June 30, 2000)

R01-19

Dismissed March 1, 2001. (No USEPA amendments during July 1, 2000, and

December 31, 2000)

R02-4

Dismissed August 23, 2001. (No USEPA amendments during January 1, 2001,

through June 30, 2001)

R02-15

Dismissed February 21, 2002. (No USEPA amendments during July 1, 2001

through December 31, 2001)

R03-3

Dismissed August 8, 2002. (No USEPA amendments during January 1, 2002

and June 30, 2002)

R03-14

Dismissed February 6, 2003. (No USEPA amendments during July 1, 2002 and

December 31, 2002)

R04-2

Dismissed August 7, 2003. (No USEPA amendments during January 1, 2003

and June 30, 2003)

R04-19

Dismissed March 4, 2004. (No USEPA amendments during July 1, 2003

through December 31, 2003)

R05-5

Dismissed September 16, 2004. (No USEPA amendments during January 1,

R05-16

1,1-dimethylethyl acetate (

tert

-butyl acetate) (CAS No. 540-88-5)

3-ethoxy1,1,1,2,3,4,4,5,5,6,6,6-dodecafluoro-2-(trifluoromethyl)hexane

1,1,1,2,2,3,3-heptafluoro-3-methoxypropane (HFE-7000) (CAS No.

methyl methanoate (methyl formate) (CAS No. 107-31-3)

R06-3

Dismissed September 1, 2005. (No USEPA amendments during January 1,

2005 through June 30, 2005)

---

Board

Docket

Board Action and Date. (Explanation/Docket Contents)

R06-14

Dismissed May 18, 2006. (No USEPA amendments during July 1, 2005

through December 31, 2005)

R07-1

Dismissed September 21, 2006. (No USEPA amendments during January 1,

2006 through June 30, 2006)

R07-10

Dismissed February 1, 2007. (No USEPA amendments during July 1, 2006

R08-6

through June 30, 2007), exempting:

1,1,1,2,2,3,4,5,5,5-decafluoro-3-methoxy-4-(trifluoromethyl)pentane

(HFE-7300 and L-14787) (CAS No. 132182-92-4)

R08-12

Dismissed March 6, 2008. (No USEPA amendments during July 1, 2007

through December 31, 2007)

R09-6

Dismissed August 21, 2008. (No USEPA amendments during January 1, 2008

through June 30, 2008)

R09-12

Dismissed March 5, 2009. (No USEPA amendments during July 1, 2008

R10-7

4-methyl-1,3-dioxolan-2-one (propylene carbonate) (CAS No. 108-32-7)

R10-16

Dismissed April 1, 2010. (No USEPA amendments during July 1, 2009 through

December 31, 2009)

R11-5

Dismissed August 5, 2010. (No USEPA amendments during January 1, 2010

through June 30, 2010)

R11-12

Dismissed February 17, 2011. (No USEPA amendments during July 1, 2010

through December 31, 2010)

R12-5

Dismissed August 4, 2011. (No USEPA amendments during January 1, 2011

through June 30, 2011)

R12-16

Dismissed February 2, 2012. (No USEPA amendments during July 1, 2011

through December 31, 2011)

---

Board

Docket

R13-1

(1

E

)-1,3,3,3-tetrachloropro-1-pene (HFO-1234ze) (CAS No. 29118-24-

9)

R13-10

Dismissed February 7, 2013. (No USEPA amendments during July 1, 2012

R14-7

bis(difluoromethoxy)(difluoro)methane (CHF

2

OCF

2

OCHF

2

236cal2) (CAS No. 78522-47-1)

bis(difluoromethyl) ether (oxybis(difluoromethane), (difluoro-

methoxy)(difluoro)methane, 1,1,1',1'-tetrafluorodimethyl ether)

(CHF

2

OCHF

2

, HFE-134) (CAS No. 1691-17-4)

1,2-bis(difluoromethoxy)-1,1,2,2-tetrafluoroethane

(CHF

2

OCF

2

CF

2

OCHF

2

, HFE-338pcc13) (CAS No. 188690-78-0)

(1

E

)-1-chloro-3,3,3-trifluoroprop-1-ene (Solstice 1233zd(E)) (CAS No.

102687-65-0)

1-(difloromethoxy)-2-[(difluoromethoxy)difluoromethoxy]-1,1,2,2-

tetrafluoroethane (CHF

2

OCF

2

OCF

2

CF

2

OCHF

2

R14-16

R15-5

2-amino-2-methylpropan-1-ol (AMP) (CAS 124-68-5)

R16-3

Dismissed July 23, 2015. (No USEPA amendments during January 1, 2015

through June 30, 2015)

The following table lists the compounds exempt from the definition of VOM to date in

alphabetical order. The table sets forth the date USEPA excluded each compound from the

definition of VOC and the date on which the Board subsequently voted to exempt each from the

definition of VOM in Illinois.

---

2-amino-2-methylpropan-1-ol

Alternative name: AMP, 1,1-dimethyl-2-

hydroxyethylamine

CAS 124-68-5

October 22, 2013

June 5, 2014

bis(difluoromethoxy)(difluoro)methane

Alternative name: HFE-236cal2

Structural formula: CHF

2

OCF

2

OCHF

2

CAS No. 78522-47-1)

February 15, 2013

November 21, 2013

1,2-bis(difluoromethoxy)-1,1,2,2-tetrafluoro-

ethane

Alternative name: HFE-338pcc13

Structural formula: CHF

2

OCF

2

CF

2

OCHF

2

CAS No. 188690-78-0

February 15, 2013

November 21, 2013

bis(difluoromethyl) ether

Alternative names: oxybis(difluoromethane),

(difluoromethoxy)(difluoro)methane, 1,1,1',1'-

tetrafluorodimethyl ether, HFE-134

Structural formula: CHF

2

OCHF

2

CAS No. 1691-17-4

February 15, 2013

November 21, 2013

1-chloro-1,1-difluoroethane

Alternative name: HCFC-142b

CAS No. 75-68-3

January 18, 1989

October 18, 1989

chlorodifluoromethane

Alternative name: CFC-22

CAS No. 75-45-6

July 22, 1980

December 22, 1987

1-chloro-1-fluoroethane

Alternative name: HCFC-151a

CAS No. 1615-75-4

August 22, 1997

June 17, 1998

chlorofluoromethane

Alternative name: HCFC-31

CAS No. 593-70-4

August 22, 1997

June 22, 1998

chloropentafluoroethane

Alternative name: CFC-115

CAS Nos. 76-15-3

July 22, 1980

December 22, 1987

1-chloro-1,2,2,2-tetrafluoroethane

Alternative names: HCFC-124, 2-chloro-

1,1,1,2-tetrafluoroethane

CAS No. 2837-89-0

March 18, 1991

September 12, 1991

---

1-chloro-4-(trifluoromethyl)benzene

Alternative names:

p

-chlorobenzotrifluoride,

PCBTF

CAS No. 98-56-6

October 5, 1994

July 12, 1995

(1

E

)-1-chloro-3,3,3-trifluoroprop-1-ene

Alternative name: Solstice 1233zd(E)

CAS No. 102687-65-0

February 15, 2013

November 21, 2013

1,1,1,2,2,3,4,5,5,5-decafluoro-3-methoxy-4-

(trifluoromethyl)pentane

Alternative names: HFE-7300, L-14787

CAS No. 132182-92-4

January 18, 2007

January 16, 2008

1,1,1,2,3,4,4,5,5,5-decafluoropentane

Alternative name: HFC 43-10mee

CAS No. 138495-42-8

October 8, 1996

May 15, 1997

dichlorodifluoromethane

Alternative name: CFC-12

CAS No. 75-71-8

July 22, 1980

December 22, 1987

1,1-dichloro-1-fluoroethane

Alternative name: HCFC-141b

CAS No. 1717-00-6

January 18, 1989

October 18, 1989

dichloromethane

Alternative name: methylene chloride

CAS No. 75-09-2

July 8, 1977

December 30, 1982

1,3-dichloro-1,1,2,2,3-pentafluoropropane

Alternative name: HCFC-225cb

CAS No. 507-55-1

October 8, 1996

May 15, 1997

3,3-dichloro-1,1,1,2,2-pentafluoropropane

Alternative name: HCFC-225ca

CAS No. 422-56-0

October 8, 1996

May 15, 1997

1,2-dichlorotetrafluoroethane

Alternative name: CFC-114

CAS No. 76-14-2

July 22, 1980

December 22, 1987

1,1-dichloro-2,2,2-trifluoroethane

Alternative name: HCFC-123

CAS No. 306-83-2

January 18, 1989

October 18, 1989

1,2-dichloro-1,1,2-trifluoroethane

Alternative name: HCFC-123a

CAS No. 354-23-4

August 22, 1997

June 22, 1998

---

1,1-difluoroethane

Alternative name: HFC-152a

CAS No. 75-37-6

March 18, 1991

September 12, 1991

difluoromethane

Alternative name: HFC-32

CAS No. 75-10-5

August 22, 1997

June 22, 1998

1-(difloromethoxy)-2-[(difluoromethoxy)-

difluoromethoxy]-1,1,2,2-tetrafluoroethane

Alternative names: H-Galden 1040X, HFE-

43-10pccc124

Structural formula:

CHF

2

OCF

2

OCF

2

CF

2

OCHF

2

CAS No. 188690-77-9)

February 15, 2013

November 21, 2013

2-(difluoromethoxymethyl)-1,1,1,2,3,3,3-hepta-

fluoropropane

Structural formula: (CF

3

)

2

CFCF

2

OCH

3

CAS No. 163702-08-7

August 22, 1997

June 22, 1998

dimethyl carbonate

Alternative name: methyl carbonate

CAS No. 616-38-6

January 21, 2009

January 11, 2010

1,1-dimethylethyl acetate

Alternative name:

tert

-butyl acetate

CAS No. 540-88-5

November 29, 2004

May 23, 2005

ethane

CAS No. 74-84-0

July 8, 1977

August 23, 1979

2-(ethoxydifluoromethyl)-1,1,1,2,3,3,3-hepta-

fluoropropane

Structural formula: (CF

3

)

2

CFCF

2

OC

2

H

5

CAS No. 163702-06-5

August 22, 1997

June 22, 1998

3-ethoxy-1,1,1,2,3,4,4,5,5,6,6,6-dodecafluoro-2-

(trifluoromethyl)hexane

Alternative name: HFE-7500

CAS No. 297730-93-9

November 29, 2004

May 23, 2005

1-ethoxy-1,1,2,2,3,3,4,4,4-nonafluorobutane

Alternative name: HFE-7200

Structural formula: C

4

F

9

OC

2

H

5

CAS No. 163702-05-4

August 22, 1997

June 22, 1998

---

fluoroethane

Alternative names: ethylfluoride, HFC-161

CAS No. 353-36-3

August 22, 1997

June 22, 1998

1,1,1,2,2,3,3-heptafluoro-3-methoxypropane

Alternative name: HFE-7000

Structural formula: n-C

3

F

7

OCH

3

CAS No. 375-03-1

November 29, 2004

May 23, 2005

Alternative name: HFC-227ea

CAS No. 431-89-0

November 29, 2004

May 23, 2005

1,1,1,2,3,3-hexafluoropropane

Alternative name: HFC-236ea

CAS No. 431-63-0

August 22, 1997

June 22, 1998

1,1,1,3,3,3-hexafluoropropane

Alternative name: HFC-236fa

CAS No. 690-39-1

August 22, 1997

June 22, 1998

methane

CAS No. 74-82-8

July 8, 1977

August 23, 1979

methylated siloxane compounds:

cyclic, branched, or linear completely-

methylated siloxanes

October 5, 1994

July 12, 1995

4-methyl-1,3-dioxolan-2-one

Alternative name: propylene carbonate

CAS No. 108-32-7

January 21, 2009

January 11, 2010

methyl ethanoate

Alternative name: methyl acetate

CAS No. 79-20-9

April 9, 1998

June 22, 1998

methyl methanoate

Alternative name: methyl formate

Structural formula: HCOOCH

3

CAS No. 107-31-3

November 29, 2004

May 23, 2005

1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxybutane

Alternative name: HFE-7100

Structural formula: C

4

F

9

OCH

3

CAS No. 163702-07-6

August 22, 1997

June 22, 1998

1,1,1,3,3-pentafluorobutane

Alternative name: HFC-365mfc

CAS No. 406-58-6

August 22, 1997

June 22, 1998

---

pentafluoroethane

Alternative name: HFC-125

CAS No. 354-33-6

March 18, 1991

September 12, 1991

1,1,1,2,3-pentafluoropropane

Alternative name: HFC-245eb

CAS No. 431-31-2

August 22, 1997

June 22, 1998

1,1,1,3,3-pentafluoropropane

Alternative name: HFC-245fa

CAS No. 460-73-1

August 22, 1997

June 22, 1998

1,1,2,2,3-pentafluoropropane

Alternative name: HFC-245ca

CAS No. 679-86-7

August 22, 1997

June 22, 1998

1,1,2,3,3-pentafluoropropane

Alternative name: HFC-245ea

CAS No. 24270-66-4

August 22, 1997

June 22, 1998

perfluoroalkane compounds

:

cyclic, branched, or linear, completely

fluorinated alkanes

March 18, 1991

September 12, 1991

perfluoro ether compounds

:

cyclic, branched, or linear, completely

fluorinated ethers with no unsaturations

March 18, 1991

September 12, 1991

perfluoro tertiary amine compounds

:

cyclic, branched, or linear, completely

fluorinated tertiary amines with no

unsaturations

March 18, 1991

September 12, 1991

perfluoro organosulfur compounds

:

sulfur-containing perfluorocarbons with no

unsaturations and with sulfur bonds only to

carbon and fluorine

March 18, 1991

September 12, 1991

propan-2-one

Alternative names: acetone, dimethylketone

CAS No. 67-64-1

June 16, 1995

October 19, 1995

tetrachloroethene

Alternative names: tetrachloroethylene,

perchloroethylene, tetrachloroethylene

CAS No. 127-18-4

February 7, 1996

February 6, 1997

---

(1

E

)-1,3,3,3-tetrachloropro-1-pene

Alternative name:

trans

-1,3,3,3-Tetrachloro-

propene, HFO-1234ze

CAS No. 29118-24-9

June 22, 2012

January 24, 2013

1,1,2,2-tetrafluoroethane

Alternative name: HFC-134

CAS No. 359-35-3

March 18, 1991

September 12, 1991

1,1,1,2-tetrafluoroethane

Alternative name: HFC-134a

CAS No. 811-97-2

January 18, 1989

October 18, 1989

2,3,3,3-tetrafluoropropene

Alternative name: HFC-1234YF

CAS 754-12-1

March 27, 2014

March 5, 2015

1,1,1-trichloroethane

Alternative name: methyl chloroform

CAS No. 71-55-6

July 8, 1977

December 30, 1982

trichlorofluoromethane

Alternaitve name: CFC-11

CAS No. 75-69-4

July 22, 1980

December 22, 1987

1,1,2-trichloro-1,2,2-trifluoroethane

Alternative names: CFC-113, Freon 113

CAS No. 76-13-1

July 8, 1977

December 22, 1987

1,1,1-trifluoroethane

Alternative name: HFC-143a

CAS No. 420-46-2

March 18, 1991

September 12, 1991

trifluoromethane

Alternative name: HFC-23

CAS No. 75-46-7

July 22, 1980

December 22, 1987