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VISTAS and CALPUFF Modeling for BART

VISTAS and CALPUFF Modeling for BART. Tom Rogers Florida Department of Environmental Protection. Proposed BART Modeling Requirement. Individual source exemption – must show source impact < 0.5 dv on all days.

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VISTAS and CALPUFF Modeling for BART

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  1. VISTAS and CALPUFF Modeling for BART Tom Rogers Florida Department of Environmental Protection

  2. Proposed BART Modeling Requirement • Individual source exemption – must show source impact < 0.5 dv on all days. • BART analysis – degree of visibility improvement for various emission reduction strategies. • Optional cap and trade program – must show better visibility improvement than individual BART determinations

  3. Which Models Does the Proposed BART Rule Specify? • “an air quality model able to estimate a single source’s contribution to visibility impairment” • CALPUFF is strongly preferred

  4. VISTAS Would Like • To provide for consistent and level implementation of the modeling within the VISTAS states. • To assist states and BART-eligible sources in completing this modeling, and states in reviewing BART modeling submissions. • Provide for CALPUFF training to states and possibly others.

  5. What Is VISTAS Doing? • Developing a Protocol for all VISTAS states to follow. • Obtaining a Contractor to help states and BART-eligible sources in the BART analysis. • Obtain different Contractors to help states review BART-modeling.

  6. VISTAS Draft Recommendations • May use a Q/D approach to screen BART-eligible sources for the determination of exemption. • Develop common CALMET dataset over the VISTAS 12 km domain (possibly several 4 km sub-domains), based on 2001, 02, 03 MM5 data.

  7. VISTAS Draft Recommendations • Possibly run CALPUFF for individual BART-eligible sources to determine if exempt. • Limited to SO2, NOx, primary sulfate and nitrate, and select other PM. • Still not sure what to do with VOC (CMAQ?) • Possibly (but less likely) run CALPUFF for selected individual BART analyses.

  8. VISTAS Draft Recommendations • Details in the protocol for the CALMET, CALPUFF, CALPOST methodology will be developed with the assistance of the contractor. • The protocol will provide different procedures and methods for source-receptor distances of: • Less than 50 km • 50 to 200 km • Greater than 200 km

  9. What Does This Mean to States? • States still in charge. May allow deviation from the protocol for a BART-eligible source if appropriate. • All states and BART-eligible sources are strongly encouraged to use the common CALMET data.

  10. What Does This Mean to States? • State may choose to have the contractor do some CALPUFF modeling. • State may choose to have VISTAS contractor review CALPUFF modeling performed by a BART-eligible source.

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