Atlanta PM2.5 Attainment Modeling with AERMOD

Transcription

1 Atlanta PM2.5 Attainment Modeling with AERMOD Yan Huang, James Boylan, Peter Courtney, and Michelle Bergin (Georgia EPD Air Protection Branch) EPA Regional/State/Local Modelers Workshop May 12, 2009

2 Outline Background Local AERMOD Modeling Updated 2012 DVF Projections

3 Background

4 Objective Elevated PM2.5 concentration in Atlanta non-attainment area: Regional/urban scale sources Local sources Demonstrate attainment in 2012?

5 Location of Core Urban Sites Doraville Health F.S.#8 E.Rivers Jeff. St. South- DeKalb East Point Forest Park

6 Annual Average PM 2.5 (Stations <3 miles from Fire Station #8) Annual PM2.5 (ug/m3) Fire Station #8 E. Rivers Jefferson Street

7 Railyard and Fire Station #8 Fire Station #8

8 CMAQ PM2.5 Projections AIRS ID County 2002 DVC 2009 DVF 2012 DVF Clayton Cobb Cobb DeKalb DeKalb Fulton Fulton* Gwinnett Hall Paulding * Local Increment at Fire Station #8 = 1.8 µg/m 3

9 CMAQ 12-km Grid Cell

10 AERMOD Modeling for Local Sources

11 Local PM2.5 Sources Rail Yards Inman, Tilford, and Howells On-Road Mobile Marietta Blvd., Marietta St., and Bolton Rd. Local Industrial Facilities Plant McDonough, Meadwestvaco Packaging Systems, others

12 Model Set-Up five year simulation Elevated terrain (AERMAP) Five-hundred meter receptors Seasonal surface parameters with twelve 30-degree wind sectors (AERSURFACE) Meteorological data Peachtree City NWS upper air Atlanta Hartsfield airport NWS surface observation

13 AERMOD Modeling Domain Provided by B. Kim, GA EPD

14 Locomotive Activity Two Class I railroad companies Norfolk Southern CSX Transportation Two locomotive activity categories Line-haul Switching

15 2012 Emission Reductions Railyard 30 Genset replacement by 2012 (currently 42 yard switchers) 93% PM2.5 emission reduction per Genset Mobile ARC link-based VMT data 50 ~ 60% reduction

16 Locomotive PM2.5 Emission Railyard 2002 # of YS 2002 LH (tons/ year) 2002 YS (tons/ year) 2002 Total (tons/ year) 2012 # of Gen sets 2012 LH (tons/ year) 2012 YS (tons/ year) 2012 Total (tons/ year) Total redu ction (%) Inman Tilford Howells

17 Mobile Emission Roadway Length (mi.) 2002 (grams/day) 2012 (grams/day) Reduction (%) Bolton Rd Marietta Rd NA NA Marietta Blvd

18 Local Facilities Map ID Facility Name 2002 PM PM PM Source Type 1 GA Power Plant McDonough Point 2 General Shale Brick Inc Plt Point 3 LaFarge Bldg Materials, Inc Point 4 RL Sutton WPCP Point 5 Central Metals Co 8.00 Point 6 Vulcan Const Materials LP Volume 7 Ennis Paint, Inc 9.61 Volume 8 Meadwestvaco Packaging 10.5 Point 9 Atlanta R M Clayton WPCP 21.1 Point Unit: tons/yr

19 Railyard and Mobile Source Contribution* to Annual PM2.5 PM2.5 (µg/m3) Inman Tilford Marietta Blvd Total FS#8 E. Rivers Jefferson St *Results are presented as 5-year average impact (2002 emissions).

20 Local Facility Contribution* to Annual PM2.5 at FS# PM2.5 (µg/m3) Total* GaPow er Shale Brick LaFarge RL Sutton Ctrl Metal Vulcan Quarry* *Results are presented as 5-year average impact (2002 emissions). Ennis Paint* Mead Pkg* RM Clayton

21 2002 PM2.5 Contributions Source FS #8 (µg/m 3 ) E. Rivers (µg/m 3 ) Railyards Mobile Point Sources TOTAL Modeled Local Increment = µg/m 3 Measured Local Increment = 1.8 µg/m 3

22 Local Contributions at FS #8 Source 2002 (µg/m 3 ) 2012 (µg/m 3 ) Railyards Mobile Point Sources TOTAL Railyard Reduction (Gensets) = µg/m 3 Mobile Reduction = µg/m 3

23 Combining CMAQ and AERMOD Results

24 Railyard Adjustment to DVF Percent (%) Reduction in Modeled Local Increment due to Gensets Railyard Controls = ( µg/m 3 )/( µg/m 3 ) = 29.28% Reduction in Measured Local Increment due to Gensets Railyard Controls = (1.8 µg/m 3 ) * (25.25%) = µg/m 3

25 Mobile Adjustment to DVF Percent (%) Reduction in Modeled Local Increment due to Mobile Controls = ( µg/m 3 )/( µg/m 3 ) = 6.29% Reduction in Measured Local Increment due to Mobile Controls = (1.8 µg/m 3 ) * (5.43%) = µg/m 3

26 Revised 2012 DVF Revised 2012 DVF including Local Gensets Railyard & Mobile Controls = 2012 DVF Local Reductions = µg/m µg/m µg/m 3 = µg/m 3 Plan to redo calculations based on quarterly local increments & quarterly RRFs from AERMOD.

27 Contact Information Yan Huang, Ph.D. Georgia Dept. of Natural Resources 4244 International Parkway, Suite 120 Atlanta, GA