Improving Ground Support Equipment Operational Data for Airport Emissions Modeling (2015)

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1 The principal objective of ACRP Project 02-46 and guidebook is to provide an improved- upon and consistent approach on how airport ground support equipment (GSE) emission inventories are prepared. This goal is achieved by developing a practical guide on how to conduct the emissions inventory, which includes a methodology on how airport-specific GSE population and operational data can be obtained and developed. The guide also con- tains recommended default data when these airport-specific GSE data are not obtainable or collected. This guidebook was specifically prepared for use by the array of stakeholders involved in preparing airport emissions inventories that may include, or be focused on, GSE. These principal participants mainly include the following: • Airport owners and operators—These include airport managers and staff involved in managing air emissions associated with their airports for regulatory, planning, and envi- ronmental purposes. • GSE owners and providers—These include passenger airlines and air cargo carriers that utilize GSE to provide the necessary ground-based services to their aircraft and other sup- port facilities. This group also includes GSE service providers that contract their services to airlines and cargo carriers. • Governmental agencies—These include federal, state, and local agencies involved in man- aging air quality. The contents of the guidebook are organized around five topics that build upon one another in a progressive fashion towards the end of preparing an airport GSE emissions inventory. These topics comprise the following: • GSE functions and characteristics—including the types and functions of airport GSE, their emissions characteristics, and how they are computed using available emissions models and tools. • GSE inventory types and strategies—including the types of GSE emissions inventories that one might prepare, how to structure a GSE inventory based on inventory purpose, and the input data requirements. • GSE data collection protocol—providing a consistent and systematic methodology to collect GSE operational and inventory data to satisfy emissions inventory input require- ments discussed in the guidebook. • Best practices for using and modifying emissions model defaults—specifying suggested default data to be used for the purposes of emissions calculation in the event that airport- specific data is not available or cannot be collected. S U M M A R Y Improving Ground Support Equipment Operational Data for Airport Emissions Modeling

2 Improving Ground Support Equipment Operational Data for Airport Emissions Modeling • Coordination best practices—covering series of coordination steps useful in securing GSE equipment inventory data from various stakeholders involved in the preparation and use of airport GSE emission inventories. How the guidebook is used will depend in large part on the expertise of the users, the available resources to conduct the work, and the desired level of accuracy. The methods and suggestions provided in the guidebook are also designed to address these variables.