Best Practices Guidebook for Preparing Lead Emission Inventories from Piston-Powered Aircraft with the Emission Inventory Analysis Tool (2015) / Chapter Skim
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3 Background Lead is a well-known air pollutant that can lead to a variety of adverse health impacts. Concerns regarding the adverse health effects of exposure to airborne lead resulted in its classification as an air pollutant pursuant to the Clean Air Act in 1976, followed by the requisite enactment of a health-based National Ambient Air Quality Standard (NAAQS)
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4 Best Practices Guidebook for Preparing Lead Emission Inventories from Piston-Powered Aircraft with the Emission Inventory Analysis Tool This guidebook supplements the existing FAA/EPA default methods for estimating airport lead emission inventories. Use of the EIAT requires familiarity with current agency methods and resources, as agency default parameters and assumptions are incorporated into the EIAT.
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Background 5 a more detailed level (e.g., by individual operating mode) as necessitated by the inventory enhancements.
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6 Best Practices Guidebook for Preparing Lead Emission Inventories from Piston-Powered Aircraft with the Emission Inventory Analysis Tool The enhanced method options for assessing fleet-average piston-engine fuel consumption rates are discussed in part of Chapter 4, "Aircraft Fleet Data," of this guidebook. 2.2.2 Operating Mode Modeling The enhanced methodology makes two significant improvements in how operating modes are defined and applied in the inventory development: 1.
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Background 7 2.2.3 Incorporation of Facility-Specific Data By design, this enhanced methodology facilitates the incorporation of facility-specific modeling input for each of the inventory modeling parameters. Table 2 summarizes the modeling input for which facility-specific data may be used in conjunction with the inventory development.
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8 Best Practices Guidebook for Preparing Lead Emission Inventories from Piston-Powered Aircraft with the Emission Inventory Analysis Tool 2. Airports with annual lead emissions, following NEI methods, near or within the range of annual emission thresholds that trigger monitoring requirements, may apply this guidance to improve the accuracy of the inventory estimates.
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Background 9 Guidebook Chapter EIAT Worksheet User Input? Summary of Worksheet Function 3 – Airport Activity Data 3.1 Annual Operations Yes Airport-specific activity data input, select daily or annual input option 3.2 Temporal Profiles No Calculates normalized profiles 3.3 Day Chart No Day-of-week temporal profile chart 3.4 Month Chart No Monthly profile chart 4 – Aircraft Fleet Data 4.1 Aircraft Fleet Yes Selection of approach option for fleet apportionment data, input of fleet apportionment data 4.2 Piston Fuel Rates Yes Selection of fuel rate assignment options 4.3 FW Piston Fleet Yes Optional user input of detailed piston-engine fleet for FW aircraft 4.4 RC Piston Fleet Yes Optional user input of detailed piston-engine fleet for RC 4.5 Piston BSFC Data No BSFC database 4.6 Example Piston Aircraft No ACRP 02-34 unique set of piston-engine aircraft and BSFC assignment 5 – Operation Mode Data 5.1 Mode Definitions Yes Selection of mode options, input of mode frequency parameters 5.2 Time in Mode Yes Selection of TIM options and data input 6 – Aviation Gasoline Data 6.1 Gasoline Parameters Yes Definition of gasoline parameter assumptions 7 – Inventory Calculations 7.1 Calculations No Series of calculations to support inventory results reporting 8 – Inventory Results 8.1 Inventory Results Yes Inventory results presentation; input of inventory descriptors Table 3.
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