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The SJVAPCD recommends a three-tiered approach to analysis based on project size to allow quick screening of most projects for significant impacts.


Small Project Analysis Level (SPAL)

The Small Project Analysis Level (SPAL) document can be found here.

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Cursory Analysis Level (CAL)

The CAL is used to determine if significance thresholds have been exceeded on projects not meeting the SPAL criteria.

  • Estimate mobile and area source emissions using CalEEMod
  • Screen for CO impact/use CO Protocol or CALINE4 dispersion model if needed.
  • If source of hazardous air pollutants or odors or is near such a source, contact the SJVUAPCD.
  • If demolition or renovation of existing buildings, contact the District for asbestos requirements.
  • Identify feasible mitigation measures and quantify benefit using CalEEMod 7G
  • If impacts are identified as significant and cannot be mitigated to less than significant prepare an EIR with full analysis.

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Full Analysis Level (FAL)

The Full Analysis Level (FAL) is the level of analysis usually required for an EIR. It requires all the elements of the previous two levels and an air quality report that fully describes the air quality impacts to the public.

  • Estimate mobile and area source emissions with CalEEMod. For general plans and large specific/community plans use DTIM2 if transportation demand model available, otherwise use MVEI7G (BURDEN7G).
  • Screen project for CO impacts, use CO Protocol or CALINE 4 if needed.
  • If source of hazardous air pollutants or odors, or is near such a source, contact the SJVUAPCD.
  • If SJVUAPCD identifies as potentially significant source of hazardous air pollutants, a health risk assessment will be required.
  • Prepare an air quality report containing:
    • existing air quality conditions;
    • analysis of project air quality impacts;
    • mitigation measures; and
    • results of modeling as technical appendices.

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Recommended Thresholds of Significant Impact

  • Ozone Precursor Emissions

      Reactive Organic Gases (ROG) 10 tons/year
      Oxides of Nitrogen (NOx) 10 tons/year

  • PM Emissions

      Particulate Matter with a diameter of 10 microns or less (PM10) 15 tons/year
      Particulate Matter that is 2.5 microns or less (PM2.5) 15 tons/year

      It should be noted that although compliance with SJVAPCD Regulation VIII substantially reduces project specific fugitive dust emissions, it may not be sufficient to reduce project specific emissions to less than significant levels. Furthermore, Regulation VIII does not reduce construction exhaust emissions.

  • CO Emissions

      Project causes or contributes to an exceedance of state or federal ambient CO standards. Determined by screening or modeling.

  • Hazardous Air Pollutant Emissions

      Based on potential to increase cancer risk for the person with maximum exposure potential by 20 in a million. Non-cancer Hazard Index > 1. Determined by screening or modeling.

  • Odor Impacts

      Based on distance of odor source from people and complaint record for facility or similar facility. More than one confirmed complaint per year averaged over a three-year period, or three unconfirmed complaints per year averaged over a three-year period. (See GAMAQI Table 4-2)

  • Construction Emissions

      Same thresholds as above, but apply only during construction period. Ozone precursors calculated on an annual basis.

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