Alternative Fuels as a Means to Reduce PM2.5 Emissions at Airports (2012) / Chapter Skim
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Pages 31-36
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From page 31... ...
Airport Cooperative Research Program Project ACRP 02-23: Alternative Fuels as a Means to Reduce PM2.5 Emissions at Airports 30 CHAPTER 5: METHODOLOGY This chapter describes the methodology developed to assess the principal sources of PM2.5 emissions and the contributions of these sources to local PM2.5 • Emissions Inventories – The purpose of an emissions inventory is to quantify the amounts (i.e., total mass) of air emissions by emission source.
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From page 32... ...
Airport Cooperative Research Program Project ACRP 02-23: Alternative Fuels as a Means to Reduce PM2.5 Emissions at Airports 31 EMISSIONS INVENTORY FOR BASE CASE Where available, airport-specific data were used to develop the emissions inventory and dispersion modeling analyses for the base case. Data included aircraft fleet mix, airfield taxi times, GSE fleet mix and operating times, APU usage rates, runway use, airfield operational profiles (quarter hourly, daily, and monthly)
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From page 33... ...
Airport Cooperative Research Program Project ACRP 02-23: Alternative Fuels as a Means to Reduce PM2.5 Emissions at Airports 32 Non-Volatile and Volatile PM2.5 The emissions inventories in the ACRP 02-23 project report PM Emissions 2.5 For PM emissions as non-volatile and volatile, where information is available to allow that distinction (i.e., for aircraft main engines and road vehicles)
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From page 34... ...
Airport Cooperative Research Program Project ACRP 02-23: Alternative Fuels as a Means to Reduce PM2.5 Emissions at Airports 33 vehicles that drive on-airport are also likely to drive off-airport. Therefore changes in fuels used by these road vehicles would effect on-airport and off-airport emissions.
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From page 35... ...
Airport Cooperative Research Program Project ACRP 02-23: Alternative Fuels as a Means to Reduce PM2.5 Emissions at Airports 34 The use of the EDMS databases to recalculate the emissions for some GSE scenarios allowed only the GSE with a relevant replacement to be considered (e.g., if no LPG alternative exists, it is not replaced)
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From page 36... ...
Airport Cooperative Research Program Project ACRP 02-23: Alternative Fuels as a Means to Reduce PM2.5 Emissions at Airports 35 24-hour scenario impact could occur during a different hour than the base case impact. However, for the ACRP 02-23 project it was assumed to be the same hour.
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