Note: Modeled using the base case (a) and MOGAS (b) scenarios
Conclusions Regarding MOGAS Use
At each airport evaluated in the study, replacing AVGAS in aircraft certified for MOGAS use resulted in significant reductions in modeled maximum Pb concentrations (20–35%). Figure 20 shows the maximum three-month average concentrations at RVS, SMO, and PAO for the base case and MOGAS scenarios. Since using MOGAS will reduce Pb emissions in all phases of aircraft operation, the entire airport footprint will have reduced Pb concentrations as a result of its use. Total 2013 annual Pb emissions at RVS, SMO, and PAO fell 43%, 23%, and 31%, respectively. Total emissions had a greater reduction
Figure 20
Maximum Three-Month Average Concentrations for the November-January Period at Each Airport for Base Case and MOGAS Scenarios
than maximum concentrations because the TGO fleet had a greater fraction of aircraft that could use MOGAS than the LTO fleet. Replacing AVGAS with MOGAS is also very effective in reducing impacts that extend outside of airport footprints. Therefore, most general aviation airports would be expected to experience significant reduction in Pb concentrations through MOGAS use. However, some airports may have other characteristics requiring the use of AVGAS, such as being at high elevation.
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