United States Environmental Protection Agency

Air Division

Technical Support Document

For The

Sacramento Metropolitan Air Quality Management District

Rule 101

, General Provisions and Definitions

Prepared by: Cynthia G. Allen Reviewed by: Andrew Steckel

April 2012AGENCY: Sacramento Metropolitan Air Quality Management District

Submittal Date: February 23, 2012 Adoption Date: October 27, 2011 Completeness Date: March 13, 2012

Submitted Rule: Rule 101

, General Provi sions and Definitions

Applicable SIP: Submitted on October 27, 1998 (adopted on September 3, 1998

and approved on March 19, 1999 ) ( 64 FR 13514 )

Background:

Sacramento Metropolitan Air Quality Management District (SMAQMD) is currently designated as a nonattainment area for both the state and federal ozone standards. Since volatile organic compounds (VOCs) are a precursor to ozone, one of the strategies to control ozone pollution is to reduce VOC emissions from existing stationary sources by establis hing more stringent VOC emission limits. One method for complying with low VOC emission limits is through the use of organic compounds with negligible reactivity for ozone formation, also known as exempt compounds. The exempt compounds are listed in SMAQ MD Rule 101, General Provisions and Definitions.

Rule Summary :

SMAQMD Rule 101

, General Provisions and Definitions, is being amended to update the Exempt Compounds list to conform to the Exempt Compounds list of the EPA.

Compounds that have low atmo spheric photochemical reactions are considered to have a negligible level of reactivity. It has been EPA’s policy that organic compounds with a negligible level of reactivity do not need to be regulated to reduce ozone. The

EPA lists negligibly reactive compounds in its regulation ( at 40 CFR 51.100(s)) and

excludes them from the definition of VOCs.

The following compounds are being added to the exempt compounds list :

 1,1,1,2,2,3,3

- heptabluoro

- 3

- methoxy

- propane (n

- C 3 F 7 OCH 3 or HFE

- 7000)

 3

- ethoxy

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

- dodecafluoro

- 2

- (trifluoromethyl) hexane (HFE

7500)

 Methyl formate (HCOOCH 3 )

 1,1,1,2,2,3,4,5,5,5

- decafluoro

- 3

- methoxy

- 4

- tribluoromethyl

- pentane (HFE

- 7300)

 Dimethyl carbonate

 Propylene carbonateMinor changes are being made to add to the c ommon names for two existing

compounds already included in Rule 101:

 HFE

- 7100 for 1,1,1,2,2,3,3,4,4

- nona fluoro

- 4

- methoxy

- butane (C 4 F 9 OCH 3 )

 HFE

- 7200 for 1

- ethoxy

- 1,1,2,2,3,3,4,4,4

- non afluorobutane (C 4 F 9 OC 2 H 5 )

SMAQMD does not anticipate any emissions chang es or any significant impacts to regulated sources or the A QM D resulting from the amendments to Rule 101

.

EPA Evaluation

Amended Rule 101 poses no significant cost to industry and no significant environmental impact.

EPA is recommending approval of SM AQMD Rule 101 under section 110(k) as meeting the requirements of section 110(a) and Part D of the Clean Air Act, as amended

in 1990.

Attachments

1. Submitted Rule 101

, General Provisions and Definitions (adopted October 27, 2011)

2. SIP Approved Rule 101 ( adopted September 3, 1998 ).

3. Strikeo ut/underline version of Rule 101

.