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November 9, 2009 Section 2: Greenhouse Gas Inventory and Forecast community at large. Second, by proactively reducing emissions generated by its own activities, the San Leandro government takes a visible leadership role in the effort to address climate change. This is important for inspiring local action in San Leandro as well as for inspiring other communities. The City of San Leandro's inventory is based on the year 2005. When calculating San Leandro's emissions inventory, all energy consumed within the city limits was included with the exception of electricity and natural gas consumption in County-owned facilities. This means that, even though the electricity used by San Leandro's residents is produced elsewhere, the energy and emissions associated with it appear in San Leandro's inventory. The decision to calculate emissions in this manner reflects the general philosophy that a community should take full ownership of the impacts associated with its energy consumption, regardless of whether the generation occurs within the geographical limits of the community. 2.2 San Leandro Greenhouse Gas Emissions Inventory In the base year 2005, the City of San Leandro emitted approximately 957,169 metric tons of carbon dioxide equivalent (C02e) from the residential, commercial, industrial, transportation, waste and municipal sectors.5 Burning fossil fuels in vehicles and for energy use in buildings and facilities is the largest contributor to San Leandro's greenhouse gas emissions. Table 1 provides a summary of total city-wide (i.e. community and municipal) GHG emissions. Table 1. San Leandro City-wide Emissions Summary (2005) Emissions. Sources Equiv C02e (tangy) Buildings -Residential 114,339 Buildings -Commercial/Industrial 228,386 Transportation -Highway 421,665 Transportation -Local roads 155,958 Waste 28,956 Municipal Operations 7,866 TOTAL 957,169 Source: ICLEI CACP Model output s Carbon dioxide equivalent is a unit of measure that normalizes the varying climate warming potencies of all six greenhouse gas emissions, which are carbon dioxide (COz), methane (CHa), nitrous oxide (N20), hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), and sulfur hexafluoride (SFs). For example, one metric ton of methane is equivalent to 21 metric tons of COze. 1 metric ton of nitrous oxide is 210 metric tons of COze. ~ 4 ~"! xf~~o Page 7 .y~aB~~O+~,~v