fine particulate matter sip for washington dc special stakeholder meeting february 20, 2008

Fine Particulate Matter SIP for Washington DC

Special Stakeholder Meeting

February 20, 2008

Discussion Topics

Background Air Quality Trends SIP Content Modeling Results Local Emissions Trends Conclusions

PM2.5 SIP Background

Standards - 15 µg/m3(annual) & 65 µg/m3 (daily)

DC area designated nonattainment in 2004 All NOVA monitors in compliance Influence on DC cited for inclusion

Monitored air quality continues to improve SIP process began - Spring 2007 Draft SIP completed – Dec 2007 Public review/comment – Jan 2008

Air Quality – Annual StandardAnnual PM2.5 Design Values

16.517.1

15.8

15.114.6 14.5

13

14

15

16

17

18

1999

-200

1

2000

-200

2

2001

-200

3

2002

-200

4

2003

-200

5

2004

-200

620

09

Year

Desi

gn V

alu

e

13.9

Air Quality – New Daily Standard

24-Hour PM2.5 Design Values

41

4544

42

37 37

30

35

40

45

50

1999

-200

1

2000

-200

2

2001

-200

3

2002

-200

4

2003

-200

5

2004

-200

620

09

Year

Desi

gn V

alu

e

34

SIP Content & Results Combination emission reduction

measures Local point, mobile, & nonroad reductions Significant regional reductions of SO2 & NOX

Attainment demonstrated by 2009 using regional modeling Results consist with other modeling efforts

All other SIP requirements met RACM analysis Conformity budgets Contingency measures

Baseline Attainment StatusAnnual Standard

Attainment Nonattainment

Current & Future StatusAnnual Standard

Attainment Nonattainment

Current Attainment Status2006 Daily Standard

Attainment Nonattainment

Future Predicted Status2006 Daily Standard

Attainment Nonattainment

Mirant PRGS Emission Trends

0

2000

4000

6000

8000

10000

12000

14000

16000

18000

2002 2003 2004 2005 2006

SO2

NOx

PM2.5

VOC

Local Emissions Reductions NOVA Point Sources

0

5000

10000

15000

20000

25000

30000

35000

40000

2002 2006

SO2NOxVOCPM2.5

SO2: - 32,935 TPYNOX: - 8,749 TPY

Conclusions DC area has a more than adequate

monitoring network Entire area currently monitoring

attainment with annual standard No EPA defined “hotspots” exist Model predicted attainment of all

standards by 2009 Complete & fully approvable SIP

Local Area Analysis (LAA) Perceived local “hotspot” at PRGS Onsite monitoring underway No monitored evidence of hotspot exists LAA not required by EPA guidance Comprehensive permit for PRGS in

process Bottom line – permit the appropriate

mechanism to resolve any local issues

Mirant PRGS Monitoring PM2.5 FRM PM2.5 Continuous PM2.5 EBAM Two SO2 Monitors Results to date

consistent with attainment (2007) Annual: 13.5 Daily: 32