State of Rhode Island 

Department of Environmental Management 

Office of Air Resources 

Notice of Public _Hearing-and Comment Period 

Concerning adoption of the proposed "Providence Carbon Monoxide Limited Maintenance 

Plan" and proposed amendments to the "Rhode Island Air Pollution Control General 

Definitions" regulation and to Air Pollution Control Regulation Nos. 9, 11, 22 and 36. 

Notice is hereby given that a public hearing regarding adoption of the "Providence Carbon 

Monoxide Limited Maintenance Plan" and proposed amendments to the "Rhode Island Air 

Pollution Control General Definitions" regulation and to Air Pollution Control Regulation Nos. 

9, 11, 22 and 36 will be held in Room 300 of the Department of Environmental Management, at 

235 Promenade Street, Providence, Rhode Island on Friday, August 8, 2008 at 10:00 AM, at 

which time interested parties will be heard. 

The proposed "Providence Carbon Monoxide Limited Maintenance Plan" specifies measures that 

will be used by the Department to ensure that Providence remains in attainment of the National 

Ambient Air Quality Standard for carbon monoxide through 2011 . The proposed revisions to 

Regulation No. 11, "Petroleum Liquids Marketing and Storage," would allow gasoline 

dispensing facilities that exclusively fuel rental cars or corporate or commercial fleets to apply 

for exemption from Stage 11 vapor recovery requirements and would require annual testing of 

pressure vacuum caps on Stage 11 systems. 

The proposed revisions to Regulation No. 22, "Air Toxics" would update several Acceptable 

Ambient Levels and Minimum Quantity thresholds ; add an additional substance, n-propyl 

bromide, to the list of regulated air toxics ; exempt existing fuel burning sources (including those 

burning biodiesel), as well as water pollution control systems and small organic solvent cleaning 

sources; and clarify reporting requirements . The Minimum Quantities listed in Regulation No. 9, 

"Air Pollution Control Permits," would be changed to be consistent with those in Regulation No. 

22 . Two guidelines that are referenced in Regulation No. 22, the "Rhode Island Air Toxics 

Guideline" and the "Rhode Island Guideline for Air Quality Modeling for Air Toxics Sources," 

would also be updated . The proposed update to the modeling guideline specifies that, henceforth, 

the Department will perform only screening level modeling when evaluating permit applications . 

The proposed revision to regulation No. 36, "Control of Emissions from Organic Solvent 

Cleaning," would exempt cold cleaners using solvents containing 5% or less volatile organic 

compounds and volatile hazardous air pollutants, clarify work practice and reporting 

requirements, regulate vapor cleaners using trans 1,2-dichloroethylene or n-propyl bromide, 

adopt federal facility-wide emissions limits and establish a vapor pressure limit for solvents used 

for cold cleaning . . The General Definitions regulation would be amended to include definitions 

consistent with the proposed updates of Regulations No . 22 and 36. 
The Office of Air Resources has determined that implementation of the proposed amendments to 

Regulation No. I 1 and the General Definitions regulation would not have a significant adverse 

economic impact on small businesses, cities or towns. Implementation of the proposed 

amendments to Regulation Nos. 9, 22 and 36 may have a significant adverse economic impact on 

small businesses, cities or towns that operate solvent cleaning operations or processes that emit 

air toxics . The Office of Air Resources is requesting comments specifically on how these 

economic impacts can be minimized or eliminated. Copies of the proposed maintenance plan, 

amended regulations and guidelines, and associated fact sheets are available from the Office of 

Air Resources, 235 Promenade Street, Providence, Rhode Island, between 8 :30 am and 4 :00 PM 

and from the Air Resources section of the Department's web site at www.dem.ri.govl. For more 

information contact Barbara Morin at (401) 222-4700, ext. 7012, TCDD (401) 222-6800 . 

Written comments may be sent to the Office of Air Resources at the above address until 4 :00 PM 

on Friday, August 8, 2008, at which time the comment period will end, unless extended by the 

hearing officer. It is requested that persons who wish to make comments during the public 

hearing submit a copy of their statement for the record . Members of the Office of Air Resources 

may question commenters concerning their remarks. 

The Department of Environmental Management building is accessible to those with disabilities . 

Persons ~vith disabilities requiring accomn:odation should contact the Office of Air Resources at 

TCDD (401) 222-6800 or (401) 222-2808 at least three business days prior to the hearing. 

Signed tliis 4d day o/July 2008 

Stepben Majkut, Chief 

Offide of Air Resources