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Microscale Air Dispersion Modeling Community Health Neighborhood Assessment Program

Microscale Air Dispersion Modeling Community Health Neighborhood Assessment Program. Working Draft Do Not Cite or Quote Tony Servin, P.E. October 10, 2001 Air Resources Board California Environmental Protection Agency. Working Draft - Do Not Cite or Quote. Overview. Local Emissions Only

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Microscale Air Dispersion Modeling Community Health Neighborhood Assessment Program

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  1. Microscale Air Dispersion ModelingCommunity HealthNeighborhood Assessment Program Working Draft Do Not Cite or Quote Tony Servin, P.E. October 10, 2001 Air Resources Board California Environmental Protection Agency

  2. Working Draft - Do Not Cite or Quote Overview • Local Emissions Only • Cars & Trucks • CALINE • Facilities • ISCST3, AERMOD, CALPUFF • Primary Emissions • no chemical reaction • no deposition

  3. Working Draft - Do Not Cite or Quote Overview (cont.) • Today’s results are predicted with • ISCST3 • CALINE • Inhalation Risk is based on predicted concentrations from local emissions

  4. Working Draft - Do Not Cite or Quote General Location • Lindbergh Field • North Island • Shipping Lane • Logan Memorial

  5. Working Draft - Do Not Cite or Quote Closer LookBarrio Logan / Logan Heights • Rail Line • Shipping Lane • Shipping Docks • B Street • 10th Street • LoganMemorial

  6. Working Draft - Do Not Cite or Quote Aerial View of Barrio Logan Local Sources Facilities Point and Volume Sources Rail Line Volume Sources Shipping Lane Volume Sources Logan Memorial

  7. Working Draft - Do Not Cite or Quote Satellite View of San Diego • Lindbergh Field • Approach • Climb Out • North Island • Approach • Climb Out • Shipping Lane • Logan Memorial • Total 660 Point and Volume Sources

  8. Working Draft - Do Not Cite or Quote Logan Memorial Wind Rose Nov 1, 1999 to Oct 31, 2000 Sea Breeze (predominately daytime) Land Breeze (predominately nighttime)

  9. Working Draft - Do Not Cite or Quote Results - Concentration • Examples of Concentration Plots • Perchloroethylene • Manganese • ISCST3 results underpredict observed annual average concentration at Logan Memorial

  10. Working Draft- Do Not Cite or Quote Perc local emissions Ann. Avg.

  11. Working Draft- Do Not Cite or Quote Mn local emissions Ann. Avg.

  12. Working Draft - Do Not Cite or Quote Motor Vehicle Links Input to CALINE 991 Links from DTIM

  13. Working Draft- Do Not Cite or Quote Risk Form local emissions

  14. Working Draft- Do Not Cite or Quote Risk Benz local emissions

  15. Working Draft- Do Not Cite or Quote Risk Cr(VI) local emissions

  16. Working Draft - Do Not Cite or Quote Comparisons to Facility HRA • Two facilities evaluated without diesel PM • Southwest Marine • NASSCO • Predictions similar, not identical • Differences likely due to: • Met. Data (Lindbergh/Logan Memorial) • Inventory (variations) • Model options (rural/urban, initial conditions)

  17. Working Draft- Do Not Cite or Quote Risk Southwest Marine (w/o DPM)

  18. Working Draft- Do Not Cite or Quote Risk NASSCO (w/o DPM)

  19. Working Draft- Do Not Cite or Quote Risk - Facilities (w/o DPM) local emissions

  20. Working Draft- Do Not Cite or Quote Risk DPM local emissions

  21. Working Draft- Do Not Cite or Quote Risk Summary local emissions

  22. Working Draft - Do Not Cite or Quote Risk at Logan Memorial

  23. Working Draft - Do Not Cite - Do Not Quote Further Analysis • Simulations with • AERMOD • CALPUFF • Evaluation of the tracer studies and model performance

  24. Working Draft - Do Not Cite - Do Not Quote Conclusions • Diesel PM is the major contributor to inhalation Risk • Facility risk similar to HRA risk • ISC/CALINE generally underpredicts observations at Logan Memorial • Need to supplement microscale evaluation with regional background evaluation

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