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9 <br />Detailed 2015 Municipal Emissions <br />The Buildings and Facilities sector has significantly decreased emissions by 10% <br />since 2005. This is important because it represents about 20% of emissions. This <br />is largely a factor of cleaner energy coming from PG&E. Wastewater treatment <br />emissions, which represent about 27% of City emissions, have decreased by <br />about 16% since first accurately measured in 2010. <br />Increase in city emissions has only been seen in one sector. Emissions from the <br />City’s vehicle fleet, representing about 24% of emissions, have increased about <br />20% since 2005. Conversely, due to converting traffic signals to LEDs around San <br />Leandro, emissions in that sector have reduced by 18% since 2005. <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />Wastewater <br />Wastewater is rich in carbon and nitrogen and must be collected, treated and <br />discharged appropriately. This process creates and releases the greenhouse <br />gases methane and nitrous oxide. San Leandro has operated the San Leandro <br />Water Pollution Control Plant (WPCP) since 1939, and it serves approximately <br />two thirds of the city’s residential population as well as industrial users. The <br />WPCP, beyond releasing greenhouse gases from the treatment process, also <br />consumes a large amount of electricity and natural gas. Wastewater treatment <br />is separated from the municipal Buildings and Facilities subsection because it <br />uses significantly more natural gas and electricity than other city buildings. <br />At 1,687 MT CO2e emissions from the WPCP and its processes, the water <br />treatment plant represents 27% of the city’s overall emissions. Of those <br />emissions, nearly 60% come from N2O emissions related to processing and <br />0 <br />500 <br />1000 <br />1500 <br />2000 <br />2005 2010 2015Metric Tons CO2eWastewater Treatment Plant <br />Emissions, 2005-2015 <br />Process Emissions <br />Electricity <br />Natural Gas <br />27% <br />24%20% <br />15% <br />11% <br />3%0.2% <br />Municipal Inventory by <br />Sector, 2015 <br />Wastewater Treatment <br />Vehicle Fleet <br />Buildings & Facilities <br />Employee Commute <br />Streetlights & Traffic Signals <br />Transit Fleet <br />Solid Waste <br />0 2000 4000 6000 8000 <br />Transit Fleet <br />Solid Waste <br />Streetlights <br />Employee Commute <br />Buildings and Facilities <br />Vehicle Fleet <br />Wastewater <br />Total <br />Metric Tons CO2e by Sector, 2005-2015 <br />2005 2010 2015 2020 Goal <br />35