Daly City's Green Vision - City of Daly City

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Measurement-based methodologies refer to the direct measurement of greenhouse gas emissions (from a monitoring system) emitted from a flue of a power plant, wastewater treatment plant, landfill, or industrial facility. This methodology is not generally available for most types of emissions and will only apply to a few local governments that have these monitoring systems. The majority of the emissions recorded in this inventory have been calculated using calculation-based methodologies to calculate emissions using activity data and emission factors. To calculate emissions accordingly, this basic equation is used: Activity Data x Emission Factor = Emissions Activity Data Activity data refer to the relevant measurement of energy use or other greenhouse -gas-generating processes such as fuel consumption by fuel type, metered annual electricity consumption, and annual vehicle miles traveled. Please see appendices for detailed listing of the activity data used in composing this inventory. Emission Factors Emission factors are used to convert energy usage or other activity data into associated emissions quantities. They are usually expressed in terms of emissions per unit of activity data (e.g. lbs CO 2 /kWh). Please see Appendix B for a listing of emissions factors used in this report. Table 2.3 demonstrates an example of common emission calculations that use this formula. Table 2.3: Basic Emissions Calculations Activity Data Emissions Factor Emissions Electricity Consumption (kWh) CO 2 emitted/kWh CO 2 emitted Natural Gas Consumption (therms) CO 2 emitted/therm CO 2 emitted Gasoline/Diesel Consumption (gallons) CO 2 emitted /gallon CO 2 2 emitted Vehicle Miles Traveled 3 Community Inventory Summary CH 4 , N 2 O emitted/mile CH 4 , N 2 O emitted In 2005, activities and operations taking place within the City of Daly City’s boundary resulted in approximately 555,027 metric tons of CO 2 e. This number includes emissions from the combustion of fuels in the residential, commercial / industrial, transportation, and agricultural sectors within the City’s boundaries. It also consists of emissions from wastewater treatment facilities and from the decompostion of organic waste in community landfills in 2005. In addition, this number contains emissions associated with community electricity consumption (emissions 2005 Daly City Community-Wide Greenhouse Gas Emissions Inventory
that occur as a result of electricity consumption within the geopolitical boundary of the City, but that occur at sources located outside of the City’s jurisdiction), and future emissions from waste generated by the community. 27 3.1 Summary by Sector By better understanding the relative scale of emissions from each primary sector, the City can more effectively focus emissions reductions strategies to achieve the greatest emission reductions. For this reason, an analysis of emissions by sector is included in this report, based on the total of 555,027 metric tons of CO 2 e. As visible in Figure 3.1 and Table 3.1, the largest source of emissions in 2005 is transportation on state highways, which accounts for 33% of total emissions. Residential energy use is the next largest source of emissions at 19%. Transportation on local roads generates 15% of total emissions, while commercial/industrial energy use makes up 14% of total emissions. Community landfills produce 12% of total emissions. Smaller emissions-generating sources include transportation on off-road equipment (3%), generated waste (3%), wastewater treatment plants (1%), and agriculture (less than 1%), . Please see detailed sector emissions analyses below for more detail. Figure 3.1 2005 City of Daly City Emissions by Sector Landfills 12% Generated Waste 3% Wastewater 1% Agriculture Less than 1% Residential Energy 19% Transportation - Off-Road Equipment 3% Commercial/Industrial Energy 14% Transportation - State Highways 33% Transportation - Local Roads 15% 27 For more information, please see Appendix A: International Local Government GHG Emissions Analysis Protocol Community Scopes Framework 2005 Daly City Community-Wide Greenhouse Gas Emissions Inventory
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Daly City’s Green Vision A Climat
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Chapter 1: Introduction While the s
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Chapter 2: Meaningful Action Alread
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Emissions Inventory - With grant fu
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Fleet Management - The City’s fle
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Goal 2 - Decrease Landfill Bound Wa
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vehicles when necessary and identif
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Goal 7 - Beneficially Reuse Wastewa
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Goal 10 - Seek to Achieve the Emiss
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Appendix A Daly City’s Leadership
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Pollution and Toxin Reduction Purch
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To the extent practicable, the City
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Operations Use of skylights to redu
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To the extent practicable, no clean
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Going Green Promoting Sustainabilit
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Appendix B Resolution Adopting the
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2005 Daly City Government Operation
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Partners Joint Venture: Silicon Val
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Appendix A: The Local Government Op
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List of Figures ES.1 2005 Daly City
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This inventory is one of the first
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majority of the emissions, to get a
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Introduction Local governments play
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Figure 1.1 The Five-Milestone Proce
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for government operations. Recently
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2005 Daly City Government Operation
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Table 2.1 Greenhouse Gases Gas Chem
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Scope 2: Indirect emissions associa
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2.3.3 Emissions Sectors ICLEI recom
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Inventory Results This chapter prov
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Page 116 and 117: Table 3.1: 2005 Community Emissions
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Daly City's Green Vision - City of Daly City

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