Item #3: EPA`s New PM2.5 Standard
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Transcript Item #3: EPA`s New PM2.5 Standard
Item #3
EPA’s New Fine Particle Standard
&
Metropolitan Washington Region
Sunil Kumar
MWAQC, December 18, 2012
MWCOG
New Fine Particle (PM2.5) Standard
December 14, 2012 - EPA announced a new PM2.5
standard
PM2.5 Standards
Annual Standard - Revised from 15.0 µg/m3 (1997) to 12.0 µg/m3
Daily (24-Hour) Standard – Retained existing 35 µg/m3 (2006)
Attainment/nonattainment designations - December 2014
Designations likely effective from early 2015
Attainment date – 2020 (5 years after effective designation date)
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Why Did EPA Make PM2.5 Standard Tighter ?
Multiple studies - negative health impacts at lower levels
than previously understood
• Chronic bronchitis, Asthma attacks
• Respiratory symptoms (cough, wheezing, etc.), Decreased lung function
• Heart attack, Cardiac arrhythmia, Changes in heart rate and heart rate variability
• Premature death
• Prevention of 40,000 premature deaths, 32,000 hospital admissions , 4.7
million days of work lost due to illness from diesel vehicle & equipment
control measures alone
• Reduced hospital admissions, treatment cost , and loss of work hours will lead to
benefits of $4b-$9b per year
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EPA Projections for PM2.5 Attainment
in 2020
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Implementation of New PM2.5 Standard
Requirements for near-roadway monitoring of PM2.5 at
one location in Washington region
Existing monitor can be relocated to meet this requirement
EPA revised Air Quality Index (AQI) to be consistent with
new standard
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Annual PM2.5 Design Value Trend
Annual PM2.5 Design Value
Washington, DC-MD-VA Nonattainment Area (1999-2011)
18.0
17.3
17.1
Design Value (µg/m3)
17.0
16.0
15.8
15.1
1997 Annual PM2.5 Standard = 15.0 µg/m3
15.0
14.2
14.0
14.6
14.5
13.1
13.0
12.4
12.0
2012 Annual PM2.5 Standard = 12.0 µg/m3
11.5
11.0
10.8
10.0
Year
* Design value = 3-year avg of annual mean PM2.5 concentrations.
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24-Hour PM2.5 Design Value Trend
24-Hour PM2.5 Design Value
Washington, DC-MD-VA Nonattainment Area
(1999-2011)
Design Value (µg/m3)
70
65
1997 24-Hour PM2.5 Standard = 65 µg/m3
60
55
50
45
45
41
44
42
38
37
40
35
35
30
32
2006 24-Hour PM2.5 Standard = 35 µg/m3
29
27
26
25
Year
* Design value = 3-year average of 98th percentile of PM2.5 concentrations.
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Emissions Trends, NOx, SO2, PM2.5
(2007-2025)
Emissions Trend
(Washington, DC-MD-VA PM2.5 NAA)
200,000
191,441
NOx
Emissions (tpy)
180,000
SO2
160,000
140,000
PM2.5-Pri
165,247
120,000
100,000
90,799
74,504
80,000
60,000
40,000
33,315
33,287
18,654
18,010
20,724
20,000
0
2007
2017
2025
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New PM2.5 Standard & PM2.5 Maintenance Plan
Washington region scheduled shortly to submit PM2.5
Maintenance Plan for 1997 annual PM2.5 standard (15.0 µg/m3)
Maintenance Plan demonstrates continued attainment in
future years of
Annual PM2.5 Standard - 15.0 µg/m3 (1997)
24-Hour PM2.5 Standard - 35 µg/m3 (2006)
Current downward PM2.5 design value and emissions trends
show likely continued attainment of
Revised annual (12.0 µg/m3 ), and
Existing 24-hour (35 µg/m3 ) standards
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Conclusion
New PM2.5 Standard improves public health
Metro. Washington region is already below the new
standard (meets the tighter standard)
Metro. Washington region expects to be in attainment
of the new standard in 2020 and beyond.
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