Audio Files and 

Time Stamps

Wednesday, (August 12, 2015) Day1_AM1_Audio

Presentations by EPA 8:30 - 8:40 AM Conference Overview and Logistics George Bridgers, OAQPS 0:00:04

8:40 - 8:50 AM Welcome and Opening Remarks Chet Wayland, OAQPS 0:07:56

8:50 - 9:05 AM Current Status of Appendix W and Overview of Proposed Revisions to 

Appendix W Tyler Fox, OAQPS 0:15:32

9:05 - 9:15 AM AERMOD v15181 Regulatory Update Roger Brode, OAQPS 0:36:00

9:15 - 9:30 AM Proposed Updates to the AERMOD Modeling System Roger Brode, OAQPS 0:42:38

9:30 - 9:40 AM Proposed Updates to the AERMOD Modeling System - AERSCREEN James Thurman, OAQPS 1:00:57

9:40 - 9:55 AM Proposed Updates to the AERMOD Modeling System - Proposed NO2 

Tier2 and Tier 3 Revisions Chris Owen, OAQPS 1:06:10

9:55 - 10:10 AM Modeling of Mobile Sources Chris Owen, OAQPS 1:13:00

10:10- 10:30 AM Day1_AM2_Audio

10:30 - 10:45 AM Meteorological Data for Dispersion Models James Thurman and Chris Misenis, 

OAQPS 0:00:45

10:45 - 11:00 AM Long Range Transport for NAAQS and Increment Assessments Tyler Fox, Kirk Baker, and Chris 

Owen, OAQPS 0:11:18

11:00 - 11:30 AM Treatment of PM2.5 and Ozone in PSD Compliance Demonstrations Kirk Baker and James Kelly, OAQPS 0:31:50

11:30 - 11:40 AM Status and Role of the Model Clearinghouse George Bridgers, OAQPS 0:53:27

11:40 - 11:55 AM Single-Source and Cumulative Impact Analyses George Bridgers and Tyler Fox, 

OAQPS 1:04:00

11:55 AM - 1:20 PM Day1_PM1_Audio

1:20 - 1:30 PM Introduction to and Opening of the Public Hearing (Day 1) George Bridgers, OAQPS 0:01:22

1:30 - 1:45 PM Source Characterization Issues for Near-Field (AERMOD) Modeling Bob Paine, AECOM for AISI 0:04:04

1:45 - 2:00 PM AERMOD Low Wind Evaluation Results for Tall Stack Databases Bob Paine, AECOM for EPRI 0:19:55

2:00 - 2:15 PM AERMOD Treatment of Buoyant Stack Releases in Convective, Low 

Mixing Height Conditions

Bob Paine, AECOM for Lignite Energy 

Council 0:34:30

2:15 - 2:30 PM Perspectives and Experience with ARM and ARM2 Rich Hamel, ERM 0:46:52

2:30 - 2:45 PM Evaluation of AERMOD with Alternate NOx Chemistry Scheme Cathe Kalisz, API 1:05:30

2:45 - 3:00 PM Optimized use of MMIF for AERMOD in complex terrain Bart Brashers, Ramboll Environ 1:17:28

3:00 - 3:15 PM Recent Experiences with MMIF/WRF for Creating AERMOD Inputs Tom Wickstrom, ERM 1:36:37

3:15 - 3:35 PM Day1_PM2_Audio

3:35 - 3:50 PM Introduction to the AWMA APM Comments and General Items David Long, AEP 0:00:56

3:50 - 4:05 PM AWMA APM Comments on AERMOD Related Issues Mark Garrison, ERM 0:14:00

4:05 - 4:20 PM AWMA APM Comments on Single Source Modeling and Long Range 

Transport Modeling Gale Hoffnagle, TRC 0:29:31

4:20 - 4:35 PM Exponent’s Comments on CALPUFF and AERMOD Modeling Guidance Christopher DesAutels, Exponent 0:42:24

4:35 - 4:50 PM Perspectives on CALPUFF, Roughness, and 30 Miles Mark Garrison, ERM 0:57:13

4:50 - 5:05 PM An Overview of the SCIPUFF Dispersion Model Biswanath Chowdhury, SageManagement 1:12:32

5:05 - 5:20 PM SCICHEM for Regulatory Modeling Eladio Knipping, EPRI 1:27:49

5:20 - 5:25 PM Preliminary Comments on Proposed Changes to Appendix W Rob Kaufmann, Koch Companies for 

NAAQS Implementation Coalition 1:40:47

5:25 PM

11th Conference on Air Quality Modeling

EPA-Research Triangle Park, NC Campus

Final Agenda

Break

Lunch (On Your Own, Onsite Cafeteria is Available )

Adjourn for Day

Break

Public Presentations & 

Comments
Wednesday, (March 14, 

2012) Thursday, (August 13, 2015) Day2_AM1_Audio

8:30 - 8:35 AM Opening of the Public Hearing (Day 2) George Bridgers, OAQPS 0:00:26

8:35 - 8:50 AM Virtual Facilities NAAQS Study Beth Barfield, ERM for NAAQS 

Implementation Coalition 0:03:30

8:50 - 9:05 AM Outstanding Issues for Modeling Low-Level Emission Sources David Heinold, AECOM for AF&PA 0:14:30

9:05 - 9:20 AM Impacts of Measurement Uncertainty and Emissions Variability on 

Modeled Impacts

Zach Emerson and Ashok Jain, NCASI 

for AF&PA 0:29:10

9:20 - 9:35 AM Use of EMVAP for Determining Permitted Emission Rates for Highly 

Variable Sources Related to: Appendix W 8.2

Carlos Szembek, ERM and Bob Paine, 

AECOM 0:41:35

9:35 - 9:50 AM Building Downwash: Problems, Solutions and Next Generation Ron Petersen, CPP, Inc. 0:57:11

9:50 - 10:05 AM Background Concentrations and the Need for a New System to 

Update AERMOD Sergio Guerra, CPP, Inc. 1:13:15

10:05 - 10:25 AM Day2_AM2_Audio

10:25 - 10:40 AM The Use of CAMD Data in Air Quality Modeling David Long, AEP 0:00:54

10:40 - 10:55 AM Initial Feedback on Proposed Revisions to Appendix W Chris Rabideau, Chevron for API 0:16:32

10:55 - 11:10 AM Procedural Concerns Related To EPA’s Regulations and Guidance on 

Air Quality Modeling

Cindy Langworthy, Hunton & Williams 

for UARG 0:28:55

11:10 - 11:25 AM Comments on AERSCREEN George Schewe, Trinity Consultants 0:43:49

11:25 - 11:40 AM Preliminary Comments on Ozone Jeff Bennett, Barr Engineering 0:57:58

11:40 AM - 1:00 PM Day2_PM1_Audio

1:00 - 1:05 PM Invitation to Provide Oral Comments for Individuals That Did Not 

Reserve Time to Speak in Advance George Bridgers, OAQPS 0:02:51

1:05 - 3:00 PM Public Hearing for the Proposed Rulemaking Individuals that did not reserve time to 

speak in advance. 0:05:25

3:00- 3:20 PM

3:20 - 5:00 PM Public Hearing for the Proposed Rulemaking (if needed) Individuals that did not reserve time to 

speak in advance.

5:00 PM

Public Presentations & 

Comments (Continued)

End of 11th Modeling Conference and Public Hearing

Break

Lunch (On Your Own, Onsite Cafeteria is Available)

Break (if needed)