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Barrio Logan Air Quality Project

Barrio Logan Air Quality Project. Microscale Emission Inventory Overview October 10, 2001. Linda Smith. Community Health Section. California Air Resources Board. Barrio Logan Community. Barrio Logan. Barrio Logan Emission Inventory Development. Point sources

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Barrio Logan Air Quality Project

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  1. Barrio Logan Air Quality Project Microscale Emission Inventory Overview October 10, 2001 Linda Smith Community Health Section California Air Resources Board

  2. Barrio Logan Community BarrioLogan

  3. Barrio Logan Emission Inventory Development • Point sources • Major point sources in neighborhood • Small neighborhood businesses • Off-road mobile sources • Regional data supplemented with community-specific activity data • On-road mobile sources • In progress • Heavy-duty truck count verification in progress

  4. Point Source Emission Inventory Methodology • Identified community boundaries and all relevant facilities in community • Over 200 facilities visited • Verified addresses and activities , assign SIC codes • Physical parameters (building dimensions, stacks, hours of operation) • Finalized facilities list for inventory • 50 facilities surveyed in detail • Product usage and process rates

  5. Off-Road Mobile Source Activity near Barrio Logan • Airports • Lindbergh Field commercial aircraft--74,000 operations per year • North Island Naval Air Station--51,000 operations; 21,000 touch and go’s per year • Railways • Used CEIDARS inventoryover 3 miles of track • Shipping • 1 to 2 ships per day

  6. On-Road Mobile Source Activity in Barrio Logan • Determined activity in Barrio Logan domain using regional transportation model from SANDAG • DTIM and EMFAC 2000 used to produce gridded motor vehicle emissions • Heavy-duty truck count verification in progress Summary of Emission Inventory (lbs/yr) Formaldehyde 10400 Diesel PM 8000 Acetaldehyde 2000 Benzene 14000

  7. Off-Road Point Sources Sources (lbs/yr) (lbs/yr) Barrio Logan Emissions Comparison Summary of Mobile and Point Sources Includes all ships for SDAPCD Pollutant Formaldehyde 109750 20567 106776 17663 Diesel PM 33841 478 Acetaldehyde 16429 0 Acrolein 15542 1807 Benzene 1703 25 Lead Arsenic 1640 15 82 14 Chromium (VI)

  8. SummaryBarrio Logan Emission Inventory • Identified community boundaries and all relevant facilities in community; over 200 facilities visited • Major point sources accounted for most of the emission in the point source inventory • Small facilities need to be assessed for cumulative & proximity effects • Mobile sources account for most diesel PM, benzene, and formaldehyde emissions • Used preliminary modeling results to check emission inventory

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