1. CRGAQS: CAMx 2018 Results Presentation to the
Gorge Study Technical Team By
ENVIRON International Corporation
February 21, 2007

2. Today’s Presentation Describe 2018 CAMx simulation Next Steps
2018 emissions review
“What-if” scenario emissions review
Results for August 2004 episode
Next Steps

3. 2018 Emissions From WRAP 2018 SMOKE IDA files Uses 2004 emissions for:
Biogenics
Fires
Natural wind-blown dust
Natural ammonia sources
Employed same fugitive dust adjustments as 2004:
Canopy escape factors
Fine/coarse speciation splits

4. What-If Scenarios Case 01 – zero Boardman emissions
Case 02 – zero NH3 emissions for PSAT region 5 (east of Gorge)
Case 03 – zero on-road mobile source emissions for PSAT region 2 (Portland and Vancouver)
Case 04 – zero major point source emissions for PSAT region 2
Case 05 – zero major point source emissions for PSAT region 1 (in-Gorge)

5. PSAT Regions

6. What-If Scenarios
Following slides are presented with no emissions scale
This is to show that emissions changes indeed were incorporated into the modeling as expected

7. What-If Scenario (Case 01)
Grid Cell (103, 50)
Location as derived
From EPA data
Grid Cell (103, 52)
2018 zero Boardman
(note that Morrow
County has no
emissions)
2018 Base Case
(data from WRAP
Note: Boardman position change)

8. What-If Scenario (Case 02)
Ammonia Emissions
(All Sources)

9. What-If Scenario (Case 03)
On-Road Mobile
Source CO
On-Road Mobile
Source NOX

10. What-If Scenario (Case 04)
Area highlighted in blue is PSAT region 2 (Portland-Vancouver)
Major stationary sources with CO emissions are shown
Figure on left is 2018 base case
Figure on right is the Case 04 What-If Scenario

11. What-If Scenario (Case 05)
Area highlighted in blue is PSAT region 1 (In-Gorge)
Major stationary sources with CO emissions are shown
Figure on left is 2018 base case
Figure on right is the Case 05 What-If Scenario

12. 2004 vs Results

13. 2004 vs Results

14. Change in Organics

15. Change in Organics

16. Next Steps Continue with remaining “what-if” scenarios New funding
Investigate “what-if” responses
Complete report
New funding
Emission issues (2018 POA?)
2018 PSAT for Aug 2004 episode
Improve Nov 2004 performance
2018 for Nov 2004 episode
PSAT for Nov 2004 episode