Tracking GHG Emissions and Savings

As part of its Quality and Environmental Management System, the District tracks greenhouse gas emissions and accounts for its mitigation activities. 

To understand its carbon footprint and to track progress reducing it, the District follows The Climate Registry’s reporting rules for Scope 1 and most Scope 2 emissions as specified by the General Reporting Protocols.The District has been tracking greenhouse gas emissions through this framework since 2006.  Recently the District started tracking business travel and daily commuting-related emissions, which fall under Scope 3 from the General Reporting Protocols. Emissions for the District’s vehicle fleet have been reduced by 15% since 2006 as a result of right-sizing, adding over 20 hybrid cars, and minimizing idling. Additionally the District has reduced business travel related emissions by 50%; emissions from daily commuting have been reduced by 10% after the implementation of an alternative work schedule.

The District reports the energy savings and emissions reductions from its water conservation and recycling programs through its Watts to Water Report. The report tracks savings since 1992. Linking energy, GHGs, and criteria pollutant emissions to water conservation requires an in-depth analysis of the energy intensity of water operations. Each acre-foot of water conserved saves 1,544 kWh while each acre-foot of water recycled saves 850 kWh.

The District has been tracking GHG reductions resulting from water conservation and recycled water efforts since 1992.

The District is also preparing to play its part in any cap and trade system established at the state or federal level. It has researched how to account for carbon sequestration and mitigation attributable to restoring wetlands and riparian habitats, one of the District’s ongoing initiatives. The District is currently using a report published by the EPA as a source for carbon sequestration rates and additional guidance.  By understanding the carbon value of these projects, the District can plan more effectively and become an offset provider in the cap and trade market.

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