Aspen-Pitkin County Airport Greenhouse Gas Emissions Inventory ...

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An internet search identified four publicly available greenhouse gas emission inventories thathave identified airport-related sources: the previously noted Aspen Canary Initiative, City ofSeattle, City and County of Denver, the Sacramento Airport Master Plan, and the San DiegoAirport Master Plan. Table I-2 summarizes these inventories in a comparative format. Thiscomparison is illustrative of the evolution in the preparation of greenhouse gas inventories,and clearly shows that a standard approach has not been identified.The City of Seattle 2000 emissions inventory identifies airport emissions associated withSeattle-Tacoma International Airport and Boeing Field. The city inventory includes onelump-sum number of emissions associated with both airports. That inventory indicates thatabout 15% of city-wide emissions are associated with the airports. While Sea-Tac Airport isnot within the city boundaries, it was the one exception made in the city boundary definition.The documentation associated with the 2002 effort indicates the following:Transportation – SeaTac and King County Airport: The airline industry has, over the past30 years, improved fuel economy per passenger mile by 61 percent. Growth in air travel,however, has resulted in energy use by commercial aircraft nearly doubling in the sameperiod 13 - which accounts for this category being the third largest source of GHG emissions.Emissions in this category were based on fuel sales data from the two airports (reported tothe Clean Air Agency annually) and assigning a percentage of those sales to Seattlebusiness and residents (King County data indicate that 29% of passengers are from Seattle.)Emissions of CO2 from jet fuel and aviation gasoline were computed using IPCC methods.(source: page 14 - note 3b)Because of California’s Global Solutions Act, a greenhouse gas emissions inventory is beingprepared for public actions. California projects are subject to the California EnvironmentalQuality Act (CEQA), which is a state-based act similar to the National Environmental PolicyAct (NEPA). The Sacramento County owns and operates Sacramento International Airport,and has proposed improvements to the airport that have been the subject of a recentEnvironmental Impact Report (EIR) that included a greenhouse gas emissions inventory. Asimilar evaluation was conducted for the EIR at San Diego International Airport. Theemissions inventories were prepared for purpose of meeting CEQA and would notnecessarily represent the same format that a city would prepare for purposes of quantifyingcity/community emissions or for a climate action plan. While IPCC methods were used inthat analysis to quantify aircraft emissions, they only represented LTO based emissions anddid not reflect cruise (flight operations beyond the LTO modes).The City and County of Denver has prepared a city-wide and community based greenhousegas inventory that includes a section on emissions associated with Denver InternationalAirport - DIA. Aircraft-related greenhouse gas emissions were identified based on the IPCCTier 1 method (fuel dispensed at DIA). Similar to the City of Seattle inventory, Denverapportioned the aircraft emissions to DIA based on the passengers living in the city, andbased that proportion on citywide vehicle trips. The “fleet vehicle fuel use” was based on theCity and County vehicle fuel use and does not appear to include airline ground supportequipment. Because of the amount of waste incinerated at DIA, a separate line item (other -6 tons) for this emission was identified. Airport facility based emissions were determined asa combination of expended electricity and natural gas, but also based on water consumption,land filled solid waste, and recycling. Ground access vehicle emissions were computedbased on data from the Denver Region Council of Governments estimates of vehicular travelin the region and fuel consumption.13 Rocky Mountain Institute, Colorado.- I-14 - 4/3/2008
AircraftSourceCity of Seattle(2000)TABLE I-2Comparison of Airport Greenhouse Gas InventoriesAspen CanaryInitiative (2004)SacramentoAirport (2004)VancouverBC Airport(2004)San DiegoAirport(2005)Denver(2005)Port of SeattleAviationDivision (2006)LTO na 177,307 170,916 na 348,195Cruise na na Na na 3,816,707Total 344,487 177,307 170,916 4,569,696 4,164,902Ground SupportReported asEquipmentNAdirect andNA 10 26,669 indirect14,051 9,926Ground AccessVehiclesNA 39,723 35,304 21,968 403,354Facilities 1,103 0 Na 211,000 40,636OtherNA 0 Na6 NaTotal (tons) 1,040,000 CO 2-eq 345,590 CO 2-eq 217,040 CO 2-eq 232,889 CO 2 1,595,759 CO 2 4,816,721 CO 2-eq 4,654,330 CO 2Annual OperationsAnnual EnplanedPassengersNotes444,630 (SEA)/359,626 (BFI)43,256 164,805 270,000 209,512 566,036 340,05813,853,299 (SEA)/11,526 (BFI) 180,519 4,671,560 7,850,000 8,686,261 20,675,380 14,989,549Includes Sea-Tacand King CountyAirport. 1996 IPCCmethods and WRIused. For SEA,includes onlypassengersoriginating fromSeattle locations.Method designedto address localconditionsEmissions arenoted for CH4 andN20, but notincluded in theabove. Used 2006LTO (EDMS)emissions only.AircraftLTO/EDMS,Mobile6 for GAVEmissions arenoted for CH4and N20, but notincluded in theabove.Examined directand indirect,defined weredirect = occur onairport site/LTO(EDMS), indirect:off site, andoutside LTO2006 IPCC Tier 1for aircraft, airportground fleet,facilities and GAV.Does not appear toinclude airline GSEIPCC Tier 2(EDMS/dispensed), EPANonRoad2005for GSE rates.Emissions forairportowned/controlled, tenants, andpublicSources: Aspen Greenhouse Gas Emissions 2004, For the City of Aspen’s Canary Initiative, Climate Mitigation Services, January 2006. Inventory and Report: Seattle’sGreenhouse Gas Emissions, City of Seattle, Sept 2002. Final Environmental Impact Report, Sacramento International Airport Master; County of Sacramento Department ofEnvironmental Review and Assessment, July 2007; Greenhouse Gas Inventory for the City and County of Denver, University of Colorado Denver, City and County of Denver,Department of Environmental Health, May 2007. Draft EIR Airport Master Plan San Diego International Airport, October 2007. Port of Seattle, Seattle-Tacoma InternationalAirport Greenhouse Gas Inventory - 2006, Synergy Consultants, updated March 2008.- I -15 - 4/3/2008
Page 1 and 2: GREENHOUSE GASEMISSIONS INVENTORY (
Page 3 and 4: Pitkin CountyAspen-Pitkin County Ai
Page 5 and 6: Pitkin CountyAspen-Pitkin County Ai
Page 7 and 8: EXECUTIVE SUMMARYPitkin County has
Page 9 and 10: I. BACKGROUNDI.1 WHAT ARE GREENHOUS
Page 11 and 12: atified the protocol are not requir
Page 13 and 14: The Global Warming Solutions Act (a
Page 15 and 16: I.3 SOURCES OF GREENHOUSE GASES AT
Page 17 and 18: - Jet aircraft are the primary sour
Page 19 and 20: 1.4.3 2006 Canary Initiative Invent
Page 21: 2) The boundaries of the aircraft e
Page 25 and 26: source (36.95%), followed by all mo
Page 27 and 28: II.INVENTORY PROTOCOLThis chapter d
Page 29 and 30: Airport Section purchased electrici
Page 31 and 32: aircraft type at Aspen-Pitkin Count
Page 33 and 34: • In surveying rental car compani
Page 35 and 36: III. EMISSIONS INVENTORYTable III-1
Page 37 and 38: FIGURE III-2Airline/Tenant/Aircraft
Page 39 and 40: IV. FUTURE CONSIDERATIONSThe invent
Page 41 and 42: Appendices4/3/2008
Page 43 and 44: Appendix A - Abbreviations, Glossar
Page 45 and 46: oil, sludge waste, waste alcohol, m
Page 47 and 48: DISTILLATE FUEL OIL: A general clas
Page 49 and 50: GLOBAL WARMING: The progressive gra
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Page 53 and 54: PARTICULATE MATTER (PM): Solid part
Page 55 and 56: the potential energy changes necess
Page 57 and 58: US Environmental Protection Agency
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ASPEN PITKIN COUNTY AIRPORTGreenhou
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