 ADVANCE \y63 

	UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

	REGION III

1650 Arch Street

	Philadelphia, Pennsylvania 19103-2029

January 30, 2008

Mr. David K. Paylor, Director

Virginia Department of Environmental Quality

P.O. Box 1105

Richmond, Virginia 23218

Dear Mr. Paylor:

On January 7, 2008, the U.S. Environmental Protection Agency (EPA)
received a revision to the Virginia State Implementation Plan (SIP) from
the Virginia Department of Environmental Quality concerning amendments
to existing regulations (9 VAC 5 Chapter 30) covering the particulate
matter national ambient air quality standards.  The SIP revision added
the new 24-hour standard of 35µg/m3 for fine particulate matter
(PM2.5), retained the current 24-hour standard of 65µg/m3during the
transition to the new standard, added transitional language to clarify
implementation of these standards, retained the level of the annual
PM2.5 standard at 15µg/m3, removed obsolete language referencing the
annual PM10 standard, and added new reference conditions.  EPA has
determined that the submittal is administratively and technically
complete, and is being reviewed to prepare a Notice of Final Rulemaking.
 

If members of your staff have any questions, they may direct them to
Gobeail McKinley, Air Quality Planning Branch at (215) 814-2033.  She is
the principal contact for this rulemaking.

Sincerely,

					          Judith M. Katz, Director /s/

                                                                     Air
Protection Division 

       

       

	Customer Service Hotline: 1-800-438-2474

