CRGAQS Revised CAMx 2004 Results Presentation to the

Today’s Presentation • Describe OR/WA emission changes • Describe November 2004 met • •

Additional WA Funding • 2004 and 2018 emission improvements • 2004 November meteorological •

OR/WA Emission Changes • Reviewed/changed ammonia emissions: – All CAFOs increased: – – V:

OR/WA Emission Changes • Reviewed/changed residential wood combustion: – ODEQ revealed x 2 over

OR/WA Emission Changes • Reviewed wind-blown dust methodology – Found some minor issues, but

November Met Changes • Background – August is performing OK, but November lacks secondary

November Met Changes • Approach 1) Gather satellite imagery for the period (provided by

August 2004 Results V: corporatemarketingoverview. ppt

November 2004 Results V: corporatemarketingoverview. ppt

Next Steps • 2018 runs are “in the oven” • 2018 “what-if” scenarios are

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CRGAQS: Revised CAMx 2004 Results Presentation to the Gorge Study Technical Team By ENVIRON International Corporation May 2, 2007 V: corporatemarketingoverview. ppt

Today’s Presentation • Describe OR/WA emission changes • Describe November 2004 met • • V: corporatemarketingoverview. ppt changes Revised 2004 CAMx simulation results Next Steps

Additional WA Funding • 2004 and 2018 emission improvements • 2004 November meteorological • improvements Rerun CAMx – 2004 Base Case, August and November episodes – 2018 Future Case, August and November episodes – 2018 “What-if” scenarios – 2004 and 2018 PSAT runs, both episodes V: corporatemarketingoverview. ppt

OR/WA Emission Changes • Reviewed/changed ammonia emissions: – All CAFOs increased: – – V: corporatemarketingoverview. ppt • x 1. 2 for OR, x 1. 4 for WA Three Mile Canyon near Boardman increased x 4. 3 • head count and “flush” operations identified Certain fertilizer application types increased • x 3. 3 for anhydrous and aqueous • x 2. 7 for nitrogen solution Checked monthly fertilizer allocation by state (but not changed) No 2018 WRAP ammonia – WRAP used 2002 numbers for 2018 • We used 2002 WRAP outside OR/WA for 2018 • We used 2004 OR/WA for 2018

OR/WA Emission Changes • Reviewed/changed residential wood combustion: – ODEQ revealed x 2 over estimate from surveys – WRAP 2018 RWC indicates x 7 growth for OR, x 3 growth for WA, from our 2004 RWC – WRAP emissions contractor (ERG) stated a 4% growth (population-based) – We reduced 2004 RWC by 50% and grew by 4% for 2018 – Monthly profiles differ in 2004 from 2018 (but not changed) V: corporatemarketingoverview. ppt

OR/WA Emission Changes • Reviewed wind-blown dust methodology – Found some minor issues, but did not change given very small component of overall PM V: corporatemarketingoverview. ppt

November Met Changes • Background – August is performing OK, but November lacks secondary aerosols • Lack of fog reduces aqueous SO 4 production • Low humidity reduces NO 3 condensation • Hypothesis: If we can get the fog right, – Aqueous SO 4 production can occur – High humidity will help increase condensation of ammonium nitrate V: corporatemarketingoverview. ppt

November Met Changes • Approach 1) Gather satellite imagery for the period (provided by Paul) 2) Calculate MM 5 average fog water content occurring over the episode -- use as the default water content to fill in the fog “holes” 3) Evaluate imagery against CAMx cloud plots to identify onset of fog and spatial extent – use terrain fields to define valleys and basins where the fog consistently forms and lingers 4) Use results from (2) and (3) to fill in fog in CAMx cloud field 5) Modify CAMx chemistry routine to ensure that relative humidity is 100% for a cloudy grid cell V: corporatemarketingoverview. ppt

August 2004 Results V: corporatemarketingoverview. ppt

November 2004 Results V: corporatemarketingoverview. ppt

Next Steps • 2018 runs are “in the oven” • 2018 “what-if” scenarios are about to • • V: corporatemarketingoverview. ppt start 2004/18 PSAT runs will start after these are completed Complete technical report