Conversion of digester biogas to electricity and heat, and/or transportation fuel Yes   


Solar panels, wind turbines, heat recovery, in conduit hydro, and/or hydroelectric power 
generation systems installed  

The WRRF Project will increase renewable energy production by including additional cogeneration 
capabilities and solar energy generation. This will provide the WRRF with additional renewable energy to 
offset purchased energy from PG&E, reducing reliance on non-renewable energy sources.  

The WRRF Project will position the City to implement fats, oils, and grease (FOG) receiving stations in the 
future, which will provide additional fuel for the biodigesters, therefore increasing the amount of useful 
biomethane produced.  

Performance Measures & Results 



Estimated percent of total annual future electricity use generated by solar panels (excluding 
buildings) 7%  



Percent of future plant electricity use generated on-site from renewable resources (current 
cogeneration and future solar) 18%  




Board/executive management reuse strategy established 


Communications and outreach plan developed and implemented  


Ongoing market assessment of reused water to public/private and public/public entities 


Investments in reuse infrastructure   


Building code changes to enable reuse (e.g., reuse water code)  

The 2014 Update to the Recycled Water Master Plan will assist the City in shaping the future for recycled 
water use within the City service area and beyond, prioritizing both current and future recycled water 
needs and sets forth a mechanism for addressing those needs.  

The Recycled Water Production Analysis conducts a capacity evaluation of the existing recycled water 
system at the City’s WRRF. The evaluation determines current infrastructure production capabilities, and 
evaluates secondary effluent supply and recycled water demand. It also provides recommendations to 
assist the City and WRRF staff in optimizing current practices and/or updating infrastructure to maximize 
recycled water production, prior to the WRRF Project upgrades (currently in the preliminary design 

The Recycled Water Facilities Planning Study, currently in process, develops and evaluates recycled 
water use alternatives, and identifies preferred alternatives with the greatest potential for beneficial use 
that will help the City meet their goals. The preferred alternatives for increasing recycled water use will 
be selected and implemented in coordination with the WRRF Project.  

The WRRF engages in reuse for on-site irrigation.  

The City is positioning itself for the success of a future potable reuse project, either indirect, direct, or 
both. Such positioning includes the choice of MBR for the secondary/tertiary process upgrade at the 
WRRF and the development of the Recycled Water Production Analysis and the Recycled Water Facilities 
Planning Study.