RE: EI Sub-Com. call - Met. and Fuel Parameters for 8-hour ozone & PM2.5 Mob ModelingFrom: Sunil Kumar Sent: Tuesday, January 17, 2006 12:00 PM To: Jeffrey King Subject: Mob6 inventories priorities from Ram Tangirala Importance: High FYI…… Sunil Kumar 202-962-3244 -------------------------------------------------------------------------------- From: Tangirala, Rama (DOH) [mailto:rama.tangirala@dc.gov] Sent: Wednesday, December 14, 2005 5:53 PM To: Sunil Kumar; Joan Rohlfs; Jeffrey King; Sydnor,James; gaburn@mde.state.md.us; Brian Hug; Diane Franks (E-mail); Marcia Ways; Tim Shepherd; Mohamed Khan; Tom Ballou (E-mail); Sonya Lewis-Cheatham; Elvis, Deirdre (DOH) Cc: Mike Clifford; Eulalie Gower-Lucas; Ron Kirby; Tracey, Stanley (DOH) Subject: RE: EI Sub-Com. call - Met. and Fuel Parameters for 8-hour ozone & PM2.5 Mob Modeling Importance: High Hello! All: There seems to be a lot of confusion about mobile emissions analysis related to the O3 SIPs. I also get a feeling that we are beating the some old horse (seasonal vs. monthly approach) much more than we should otherwise. As you all know, for the 8-hr SIPs, we need the Ozone Season Day (OSD) analysis...we DO NOT need annual inventories for O3 SIPs. For this purpose we recommended using the top 10 episodes' local met inputs. My understanding is that the three states supplied all the needed inputs for the OSD mobile emissions analysis and the COG has all the methodologies in place for developing the inventories. I guess, the primarily focus should be on finalizing the OSD inventories for 8-hr SIPs starting with the Base Year 2002 OSD mobile inventories. I tried to summarize below the important work products related to mobile sector we need for the 8-hr O3 SIPs. 1) Base Year 2002 OZONE SEASON DAY mobile inventories - COG has all the needed inputs from the states, and the methodologies are in place for the OSD analysis...We are way behind the schedule on this. COG has to treat this as a priority and prepare the draft final Base Year OSD mobile emissions at the earliest. 2) Attainment Year 2009 OSD mobile inventories - COG has the needed inputs from the states, and the methodologies are in place. 3) RFP year 2008 OSD mobile inventories, Target, Actual and any other variations that are needed for RFP - COG has all the inputs from the states and the methodologies are in place. As for the annual inventories for O3 and PM2.5 precursors - annual inventories are needed only for the Base Year 2002 initially for meeting a new reporting requirement by EPA R3. Annual inventories for the O3 precursors are not required for RFP. In my view, we are NOT running against tight deadlines related to annual inventories for PM2.5 and/or O3 precursors at this time. COG can develop the annual inventorie at a slower pace as compared to the OSD inventories. Down the road, COG will be developing the annual inventories for the attainment year 2009 for PM2.5 SIPs purpose anyway. For the June 2006 reporting requirement to EPA-R3...if COG folks could not complete the Base Year 2002 annual inventories in time, states could use the MANE-VU/VISTAS annual inventories as place holders. BTW, the MANE-VU annual data for 2002 are readily available in the required NIF format. Hence, below are the analysis products for the annual mobile inventories. 1) Base year 2002 Annual inventories for ozone precursors along with the other PM2.5 precursors - COG has all the needed inputs from the states. a) Ozone precursors annual inventories for the Base Year (possibly by June 2006)- a new requirement by the EPA region 3, and b) PM2.5 direct and precursors inventories for PM2.5 SIPs 2) Attainment Year annual inventories for the PM2.5 SIPs - COG has all the needed inputs from the states. MDE & VADEQ - Please go thro' the monthly fuel parameters data of your state and provide me your thoughts about having a single set of data for the region (as I proposed on the 12/13/05 EI call) for annual inventories development. Hope this provides the much needed clarification to all of us (including myself). Call me with any questions. Thank you. Ram --------- Dr. Rama S. Tangirala Air Quality Division, Bureau of Environmental Quality DC Department of Health 51 N Street, N.E., 5th Floor Washington, D.C. 20002 Ph: (202) 535-2989; Fax: (202) 535-1371 E-mail: rama.tangirala@dc.gov ========================== ________________________________ From: Sunil Kumar [mailto:skumar@mwcog.org] Sent: Tuesday, December 13, 2005 11:48 AM To: Tangirala, Rama (DOH); Joan Rohlfs; Jeffrey King; Sydnor,James; gaburn@mde.state.md.us; Brian Hug; Diane Franks (E-mail); Marcia Ways; Tim Shepherd; Mohamed Khan; Tom Ballou (E-mail); Sonya Lewis-Cheatham Subject: EI Sub-Com. call - Met. and Fuel Parameters for 8-hour ozone & PM2.5 Mob Modeling Ram: Listed below are the source and period of meteorological (temperature, relative humidity, and barometric pressure) inputs that was agreed upon on Sep. 9th, 2005 EI Committee meeting. I have also attached a spread-sheet with fuel parameters listed for all three jurisdictions. 1. COG vs. NMIM 2002 database - Everyone agreed on COG database. 2. Using only one year (2002) vs. three years (2002-2004) worth of data - Everyone agreed on three years (2002-2004) worth of data for both 8-hour ozone and PM2.5 Mobile modeling. 3. Minimum& Maximum vs. Hourly Temperature - Everyone agreed on using monthly average Hourly Temperature and corresponding Hourly Relative Humidity for PM2.5 and top 10 worse 8-hour ozone days' average Hourly Temperature and corresponding Hourly Relative Humidity for 8-hour ozone Mobile modeling. 4. Which weather stations to choose for collecting data - Everyone agreed on using averaged data from Washington Dulles and Reagan National airports for both 8-hour ozone and PM2.5 Mobile modeling. 5. Jim also suggested using monthly average Barometric Pressure from the two airports for PM2.5 Mobile modeling and top 10 worse 8-hour ozone days' average Barometric Pressure for 8-hour ozone Mobile modeling. Thanks, Sunil Kumar 202-962-3244 ________________________________ From: Tangirala, Rama (DOH) [mailto:rama.tangirala@dc.gov] Sent: Tuesday, December 13, 2005 8:58 AM To: Sunil Kumar; Joan Rohlfs; Jeffrey King; Sydnor,James; gaburn@mde.state.md.us; Brian Hug; Diane Franks (E-mail); Marcia Ways; Tim Shepherd; Mohamed Khan; Tom Ballou (E-mail); Sonya Lewis-Cheatham Subject: RE: EI Sub-Commitee call - More Sensitivity Results Sunil: To refresh our memory, please send us (or have it ready at your end) what was recommended for met (and other local) inputs for the 8-hr SIP mobile inventories. Thank you.