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help develop skills needed to contribute meaningfully to decision-making on issues involving the 
community’s natural resources.    

The District encourages the public to consider the environment in their daily activities through a variety 
of reoccurring public service announcements on 95.3 KUIC’s regional Hometown Green radio campaign. 
Partnering with other agencies significantly reduces the cost of airing the segments and allows messages 
to reach as broad an audience as possible.  The segments, which are written by and recorded on-air by 
staff, include messages regarding the connectedness of streets to local creeks, the importance of 
recycling, and reducing waste.    

Energy Efficiency  

Energy efficiency is a key driver for every decision made at the District.  Treatment plant operators are 
provided with training on the dynamics of the treatment plant’s various power sources, and develop and 
implement procedures that maximize the use of renewable or off-peak utility power.  This has resulted 
in modifications to the timing and duration of emergency generator testing, cogeneration engine 
preventative maintenance work, and filter backwashing.  Major maintenance projects and new capital 
projects always consider energy efficiency and overall life-cycle cost rather than capital cost alone.  This 
has resulted in the selection of premium-efficiency motors, LED lighting, and process equipment that 
operates more efficiently.   

Energy Recovery   

The District strives to obtain as much energy as possible from waste products and renewable energy.  
Over the past 5 years, the District has produced or acquired more than 67% of its power from 3 
renewable sources – cogeneration, solar, and wind. The District’s two cogeneration engines combust 
digester gas (a potent greenhouse gas) to generate more than 40 percent of the annual energy need at 
the treatment plant.  Waste heat is also used to heat the anaerobic digesters.  Upon start-up of the 
OMRC at the plant, a small portion of the final product will be returned to the anaerobic digesters to 
increase gas production and increase the energy by approximately 25%.   

The District has a power purchase agreement for a 1 MW solar farm on the District’s property, which 
generates over 20 percent of the plant’s electrical needs in a sustainable manner at a controlled cost.  
The District’s four wind turbines provide 2% of renewable power to the treatment plant.     

Water Reuse  

The District has been producing and distributing recycled water since 1974.  Nearly 400 million gallons of 
treated wastewater is reused each year for crop irrigation and dust control.  A majority of plant effluent 
is supplied to the Suisun Marsh to enhance water quality to sustain this critical part of the San Francisco 
Bay-Delta estuary ecosystem. The District has received numerous state and national awards for its 
commitment to innovation and excellence.  From a state-of-the art treatment system, to engaging 
outreach programs, the District has proven the power of a highly qualified, environmentally responsible, 
and customer-focused team of public employees.