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

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Finally, the most recent airport-specific greenhouse gas inventory that was identified was thatprepared by Synergy Consultants for the Port of Seattle’s Aviation Division. The approachto that inventory was similar to that documented in this report for Pitkin County’s AirportSection, as it identified direct and indirect emissions associated with sources owned andcontrolled by the Port of Seattle’s Aviation Division, and then separately itemizes emissionsassociated with tenants and public on-road travel.I.4.5Other InventoriesBased on the internet search, state emission inventories have been prepared by numerousstates. Cities have prepared inventories for city-owned resources as well as overall emissionsources. This section briefly provides examples of a few of these inventories.State emissions inventories. In 1999, The USEPA issued guidance documents concerningthe preparation of emission inventories for purposes of developing a consistent frameworkfor the state inventories. The EPA methodology is based on the IPCC method discussedpreviously and is the same methodology that USEPA used in preparing the nationalinventory.The State of Colorado prepared a greenhouse gas emissions inventory 14 representing sourceemissions within the state. Table I-3 shows that inventory in comparison to the county andcity inventories. Each inventory was prepared using differing methods and are formatted tofacilitate the consideration of emissions.TABLE I-3UNITED STATES AND COLORADO GREENHOUSE GAS EMISSIONS (CO2eq)SourceUnited States State of Colorado(2005)(2005)Total Tons CO 2-eq 7,206 million 116.1 million (gross)Source DistributionElectrical Consumption 33.5% 36.95%Residential/Commercial/Industrial Fuel Use 11.2% 18.3%Transport 27.7% 24.1%Industrial (fossil fuel & processes) 18.6% 11.2%Other (waste management & agriculture, USTerritories)9.0% 9.5%Aviation (if identified) 3.45% 2.76% est.Source: Final Colorado Greenhouse Gas Inventory and Reference Case Projections 1990-2020The State of Colorado’s greenhouse gas inventory indicates that in 2005, gross state-wideemissions were approximately 116.1 million metric tons of CO 2-eq before subtracting outforestry-land use and agriculture soil sequestration, resulting in net emissions of 89.4million metric tons of CO 2-eq . Of the gross emissions, electric consumption is the largest14Center for Climate Strategies, Final Colorado Greenhouse Gas Inventory and Reference Case Projections1990-2020, October 2007. Available at http://www.coloradoclimate.org/ewebeditpro/items/O14F13894.pdf- I-16 - 4/3/2008
source (36.95%), followed by all modes of transportation (24.12%) andresidential/commercial/industrial fuel use (18.26%). Aviation fuel use is within thetransportation category. As a percent of total, aviation fuel based emissions in Coloradorepresents nearly 2.8% of CO 2-eq or 11.4% of transportation related emissions; theseproportions are similar to the national levels.- I-17 - 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 and 22: 2) The boundaries of the aircraft e
Page 23: AircraftSourceCity of Seattle(2000)
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
Page 51 and 52: mixing of pollutants in the atmosph
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
Page 59 and 60: APPENDIX BAspen-Pitkin County Airpo
Page 61 and 62: Aspen Pitkin County Airport CO2 Emi
Page 63 and 64: ASPEN PITKIN COUNTY AIRPORTGround S
Page 65 and 66: ASPEN PITKIN COUNTY AIRPORTGreenhou
Page 67 and 68: 30,596ASPEN PITKIN COUNTY AIRPORTGr

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