EMFAC definition

EMFAC means a computer-based mathematical model used by the state of California to calculate motor vehicle emissions.
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Examples of EMFAC in a sentence

  • The EMFAC-HK was adapted from the 2002 EMFAC software used in U.S. State of California.

  • Changes to greenhouse gas emissions will be based on the CalEEMod and EMFAC modeling described above.

  • Emissions associated with short-term remediation and long-term maintenance activities will be estimated using the California Emissions Estimator Model (CalEEMod), and/or calculations using the California Air Resources Board’s (CARB) OFFROAD, EMFAC, and U.S. Environmental Protection Agency AP-42 emission factors.

  • The procedures allow for persistence factor to be as high as 0.8. California now has a version of hot-spot analysis procedures that uses the CT- EMFAC 5 model, which is currently under review by EPA for use in conformity.

  • ICF will rely on TAM VMT modeling (TAM modeling is not part of this scope) to provide the VMT input data that ICF will then do basic transportation emissions calculations using EMFAC factors.

  • Model changes in emissions associated with construction and operation using the appropriate versions of the CalEEMod and EMFAC models.

  • EMFAC-HK contains SO2 estimates but the guidance instructs the user to instead calculate SO2 using EPA methodology instead of using EMFAC.

  • Emissions from Average Daily Traffic (ADT) will be quantified using fleet mix and emission factor data provided in the CARB EMFAC model, along with representative meteorological data.

  • Fuel consumption rates for on-road and off-road vehicles will be obtained from EMFAC.

  • Most of these studies are based upon use of the MOBILE emission factor model or California’s EMFAC model, but present information still relevant to this study.

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