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OAQPS Update

OAQPS Update. March 17, 2009 Region 4 State Modelers Workshop. Overview. OAQPS/AQMG Update 2008 R/S/L Modelers Workshop Call for State Representative AERMOD Modeling System CALPUFF Modeling System Use of Gridded MET 9 th Modeling Conference. Update on OAQPS/AQMG Activities.

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OAQPS Update

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  1. OAQPS Update March 17, 2009 Region 4 State Modelers Workshop

  2. Overview • OAQPS/AQMG Update • 2008 R/S/L Modelers Workshop • Call for State Representative • AERMOD Modeling System • CALPUFF Modeling System • Use of Gridded MET • 9th Modeling Conference

  3. Update on OAQPS/AQMG Activities • AERMOD Modeling System • AERSURFACE and AERSCREEN • AIWG and AERMIC • Update to APTI 423 Course on dispersion modeling • CALPUFF Modeling System • Performance evaluations (near-field & Class 1) • Documentation of evaluation and issues • Peer review (to be done by end of 2009) • New Dispersion Modeling Team • Lead = James Thurman • Reps from across OAQPS, ORD, and OTAQ • Focus on better communication & coordination of development work and applications • Detroit Multi-pollutant Study • Hybrid approach with CMAQ and AERMOD • PM2.5 and selected toxics • Results and documentation later this spring • 2008 R/S/L Modelers Workshop • 9th Modeling Conference

  4. 2008 R/S/L Modelers Workshop • June 9th-12th in Denver, CO • 30th Anniversary, 1978-2008 • ~90 participants • PSD/NSR Policy Training: afternoon of June 9th • 3-day modeling workshop • Day 1=Policy update, Regional/state/local issues & presentations • Day 2=AERMOD & CALPUFF intensive • Day 3=Looking forward to 9th Modeling Conference • Presentations on SCRAM

  5. Call for State Representative • Role (rotating 2 year term of service) • Plan and organize “State issues” and “State presentations” sessions at annual R/S/L modelers workshop • Periodically participate (2-3 times/yr) in EPA OAQPS/RO monthly conference call • Update on state issues & status of workshop • Poll states to gain information or state input on issues as requested by EPA • Process to fill role • Nominations to ROs within next month • EPA OAQPS/ROs to discuss and then make selection • Formal letter to your mgmt requesting time

  6. AERMOD Modeling System • Updates to modeling system components • AERSCREEN • AERSURFACE • AERMOD Implementation Workgroup • AERMIC Discussed in more detail in other presentations

  7. Proprietary AERMOD Memo • Clarification Memo issued regarding regulatory status of proprietary versions of AERMOD • Issue highlighted by proliferation of “parallelized” versions of AERMOD • Appendix W explicit that EPA-preferred model cannot be proprietary • Requirements for acceptance of results from these products are straight-forward; requires equivalency demonstration • Memo expresses expectation that outputs from these proprietary products be easily distinguishable from official EPA version of AERMOD

  8. CALPUFF Modeling System:Current Status under Appendix W • Near-field applications • OAQPS “Clarification Memo” on SCRAM • Call to Regional offices on recent use • Model Clearinghouse MUST be consulted • Long-Range Transport • Regulatory approved version = v5.8 • Work closely with Regional Office & FLMs on protocols and resolving potential issues in specific permit or AQRV context • Consult Model Clearinghouse in cases where questions or concerns • Other applications (risk assessments etc), please feel free to inquire with OAQPS & ROs • Work through Dispersion Modeling Team (James Thurman, lead)

  9. Use of Gridded MET: Activities & Plans • MM5-AERMOD Tool • Evaluating use of MM5 data in AERMOD: used in Detroit MP study and upcoming 2005 NATA • MM5-CALPUFF Tool • Collaborative effort with Region 7 (Bret A), FLMs, and Region 10 (Herman) to develop tool to deliver data directly to CALPUFF • Tool development, evaluation, documentation • EPA will need to develop guidance for R/S/L • Likely used in upcoming Alaska OCS permits along with model clearinghouse • See presentations at 9th Modeling Conference

  10. 9th Conference on Air Quality Modeling • October 9-10, 2009 in RTP, North Carolina • ~100 participants • Format • 1 & ½ days of EPA presentations and panel discussions involving modeling community • ½ day of public presentations • Presentations available on SCRAM

  11. 9th Modeling Conference Agenda Topics (1) • Appendix W Refresher • Program overview & how current process is intended to work • Provide clarity, understanding to stakeholders • Model Clearinghouse process as an example • Non-Guideline Applications • 2002 NATA • PM2.5 SIP demos use of AERMOD • NEPA analysis for oil and gas wells • Use of Gridded MET • Development of tools & guidance for CALPUFF, AERMOD

  12. 9th Modeling ConferenceAgenda Topics (2) • AERMOD modeling system • Update on status, issues, and applications • AERMOD implementation workgroup update • AERMIC update on science improvements • CALPUFF modeling system • Update on status, issues, and applications • Science and implementation issues • Development, maintenance, evaluation • Review of current and available model evaluation methods • Review of new and emerging models/techniques • Long-range transport modeling (particle, puff, et al) • Single-source modeling for O3, PM2.5, visibility

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