Raleigh, NC March 2010 - Quick Notes:

Added 1 hour NO2 standard 100 ppb
Retained annual average of 53
Some monitors will be located to focus on vulnerable groups, perhaps roadways
58% of NOX from mobile sources, only 22% from utilities
New monitors operating by end of 2012.

SO2
proposed new 1-hour standard, replace annual and 24-hour standard
probably 50-100 ppb
Final rule by June 2010.

Ozone, proposal signed, public comment period, final rule by August 31.
evidence showing health effects in healthy adults at 60 ppb
0.06 vs 0.07 = 3000 to 8000 more lives saved each year.

secondary W126 standard (vegetation)- weighted hourly concentrations across days over 3-month season (7 to 15 ppm-hours)
Weighting 0.03 = 0.01 weight
0.05 = 0.11
0.06 = 0.30

Current nonattainment at 75 = CA, eastern seaboard, southeast spots
60-70 extends into AZ, upper NW Utah, MI, IN, IL, more FL counties, more counties in PA, NY, OH
2020 looks bette, mostly just CA, Houston, and Philly / Pittsburgh.
Seasonal secondary standard- mostly CA, QA, around Philly, Knoxville, middle NC, some in western Wyoming

PM2.5
- 24-hour standard was revised from 65 to 35 in 2006.
Retained annual standard of 15
Retained PM10 std to address course
Did not adjust the PM AQI
In Feb 2009, court remanded some portions of the final rule- was annual standard sufficient to protect children/vulnerable.
PM NAAQS Review, proposed rule in November 2010, final by July 2011.
Interim 35 = AQI 100.

Lead:
New source oriented lead monitors at sources > 1 tpy
July 2009- EPA granted petition for reconsideration to lower the threshold (down to 0.5 TPY),
perhaps non-source oriented monitoring (CBSA's > 500K), perhaps tied in with Ncore sites.
New revisions to monitoring requirements in Dec 2009

NO2
Current network was implemented to support an annual standard, but now serves for assessment of ozone formation, PSD, health study support.
But almost none of them are near the road.
Within 100m of expressway, values can be elevated 2 to 5 times ambient levels.
Monitors to be placed within 50m of edge of traffic lane. Operation by January, 2013.
Plan for sites to later add CO, PM, BC, air toxics.
126 Near Road: One in any CBSA > 500K, second if > 2.5M
53 urban Area Monitors: 1 for CBSA > 1M
40 for vulneratble populations.

SO2
about 488 monitors today, about 1/3 source-oriented.
Proposal: Population Weighted Emissions Index
multiply CBSA by SO2 emissions, divide by 1M, "million person-tons per year"
3 monitors if index > 1M (Atlanta, DC, NY)
2 if 10K to 1M
1 if 5K to 10K.
Second Prong (117 monitors) based on statewide contribution to nationwide inventory, for outside of CBSAs.

Q&A:
Cory Chadwick, Cincinatti: where is $$ coming from? (EPA: $15M more in next year's budget as 103 money. $75M to 'core programs')

Laura / Michigan: data in AQS comes from other organizations, hard to tie into state SIP.
: States don't have authority to require airports to change fuel- will have to be federal activity
: Roadway- how will you do non-attainment areas?
: Ozone- setting an unrealistic ozone level will disenfranchise general public, who will listen to AQI anymore? It's like telling someone who is overweight they have to lose 150 lbs at once. We should be incremental. (EPA response- we have to go where the science tells us)

Mike/Puget Sound- Urban Visibility Standard? How would this not be redundant with PM2.5?