UPDATE ON 2008 OZONE

STANDARD

Laura BootheAttainment Planning Branch Supervisor

January 11, 2012

BACKGROUND INFORMATION EPA promulgated a new 8-hour

ozone standard in March 200875 parts per billion

Initial boundary recommendation submitted March 2009 Based on 2006-2008 dataMany areas were violating the

standard

8-HOUR OZONE DESIGN VALUES(2006-2008)

MARCH 2009 BOUNDARY RECOMMENDATION

BACKGROUND INFORMATION September 2009 EPA announced it

was reconsidering the 2008 standardThis delayed the designation process

September 2011 it was announced that the reconsideration was being withdrawnEPA started the implementation

process

CURRENT SITUATION Submitted revised boundary

recommendation October 28, 2011Based on 2009-2011 ambient dataDid not have sufficient time to consult

with elected officials or general publicReserved the right to amend the

recommendation

8-HOUR OZONE DESIGN VALUES(2009-2011)

NORTH CAROLINA’S REVISED BOUNDARY RECOMMENDATION

EPA’S RESPONSE TO BOUNDARY RECOMMENDATION EPA sent a letter to the Governor on

December 8th

Agreed to designate the Greensboro/Winston-Salem/High Point area as unclassifiable/attainment provided 2011 data is certified by February 29, 2012

Intends to support NC’s recommendation for designating the Charlotte/Gastonia/Salisbury area as nonattainment

Will work with the State regarding the appropriate boundaries for this area

Any additional information needs to be submitted by February 29, 2012

NEXT STEPS DAQ is looking at data to determine if parts

of Gaston, Lincoln, and/or Union Counties could be recommended as unclassifiable/attainment

DAQ has meetings scheduled for January 18th and 19th with elected officials and general public in the Charlotte-Gastonia-Salisbury region

By February 29, 2012, North Carolina submits any additional information to EPA regarding the nonattainment boundary for the Charlotte-Gastonia-Salisbury area

EPA designates areas as nonattainment by no later than May 31, 2012 Expect the Charlotte-Gastonia-Salisbury area to

be designated as Marginal