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versus 0.7 tons for gas turbines and 0 tons for renewable sources such as solar, wind, or hydroelectric power. Pleasanton's emissions from the built environment are roughly equally distributed between the residential sector and the commercial/industrial sectors. Collectively, the commercial and industrial sectors emitted 54.0 % of emissions from the built environment, and the residential sector emitted the remaining 46.0 (Figure 2). Residential [n 2005, Pleasanton's 68,2004 residents consumed 209.7 million kWh of electricity, or about 8,497 kWh per household, and nearly 12.5 million therms of natural gas, or about SOS therms per households. When compared to most other Alameda County jurisdictions, energy consumption per household in 2005 is significantly larger. While this is likely in part due to Pleasanton's location and more extreme temperatures, this suggests that Pleasanton may be able find significant reductions in greenhouse gas emissions by targeting energy efficiency in residential buildings. Overall, energy consumption in the residential sector resulted in a release of 1 13,565 metric tons of COze. Major residential energy uses include refrigeration, lighting, air conditioning and heating, and water heating. Figure 2 - Stationary Sources Emissions Community GHG Emissions from The Built Environment (2005) conrt t Indt 54. Commercial/ Industrial In 2005, Pleasanton's commercial and industrial sector buildings consumed 401.9 million kWh of electricity and 8.1 million therms of natural gas. "Chic consumption resulted in a release of 133,303 metric tons of COZe into the atmosphere. Industrial natural gas and electricity consumption data is reported within this sector due to confidentiality rules from the Public Utilities Commission (PUC) that prohibit the release of constunption data from ~sidenti I large industrial consumers in certain cases. Also, 46.0% the industrial sector does not include Direct Access electricity or natural gas consumption by large industrial consumers, as this information is similarly unavailable due to PUC privacy rules. Waste (n 2005, the City of Pleasanton sent approximately 121,034 tons of solid waste, and 22 tons of alternative daily cover (ADC)6 to landfill, resulting in a total of about 40,819 metric tons of COZe. Table 3 breaks down emissions by type of waste generated by the City in 2005. Emissions from the waste sector are an estimate of methane (CH4) generation that will result from the anaerobic decomposition of the waste sent to landfill from the entire community in the base year (2005). It is important to note that these emissions are not solely generated in the base year, but occur over the 100+ year timeframe in which the waste generated in 2005 will decompose. This "frontloading" of future emissions allows for sirnplitied accounting and accurate comparison of the emissions impacts of waste 4 Populations and household estimates arc from AI3AGs Projections 2005. s ibid. 6 The California Integrated Waste Management Board defines ADC as "Alternative cover material other than earthen material placed on the surface of the active face of a municipal solid waste landfill at the end of each operating day [o control vectors, fires, odors, blowing litter, and scavenging." Zoos o-t~,r,«.l~ c~ ~~«,5 it,~tt«y, atyaf Reasanton s