146 

 

Partnership with Solid Waste utility to divert food waste from the landfill to the digesters for production 
of biogas and soil amendments. 

Performance Measures & Results 

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Increase number of Community Gardens: Increased from 36 to 74 

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Increase acres of green space: Increased from 47.5 acres in 2014 to 57.5 acres in 2015 

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Participated in three de-pave projects: Reduced impermeable surface area in three 
neighborhoods 

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Tons of food waste diverted from the landfill: 600 tons per year diverted, half of which was used 
to generate biogas and half was used to manufacture compost 

 

  

ENERGY EFFICIENCY 

 

Indication of management commitment (e.g., energy efficiency standard operating procedures; 
board/executive management energy efficiency policy, including quantitative goals developed 
and shared with stakeholders)  

 

Energy audit/benchmarking conducted to identify priorities for energy efficiency improvements  

 

‘Energy teams’ established and individuals empowered within the utility for energy efficiency 
activities (e.g., an “energy advocate” or “energy champion”)   

 

Energy management-related training provided to plant staff 

 

Utilization of energy conserving operational methods (e.g., optimization of primary 
sedimentation to reduce utilization of pure oxygen) 

Developed a detailed Energy Map for the entire 150 mgd Central Wastewater Treatment Plant (CTP) 
that graphically maps out all horsepower used at the facility.  This map has detailed acuity down to the 1 
hp motor level.  The map, which is regularly updated as the facility’s vast electrical system undergoes 
changes, is used by Operations to help make operational decisions to reduce electrical consumption. 

Developed a detailed model that predicts the CTP’s electrical consumption based on the volume of 
wastewater treated (kW per mgd treated).  This model allows the Utility to monitor the implementation 
effectiveness of energy savings measures (actual electrical usage versus the predicted usage at a given 
treatment volume), and allows for overall monitoring of electrical consumption trends. 

Participation with nine other regional industrial power users as part of a High Performance Energy 
Management Program, collaborating to reduce electrical consumption through developing and 
implementing operational changes. 

Installation of real-time power monitoring to allow facility operations staff to closely monitor electrical 
consumption throughout the facility and make adjustments to keep electrical consumption at optimal 
points during any given wastewater treatment flow condition. 

Development and ongoing maintenance of an Opportunity Register designed to record and track 
implementation progress on energy savings ideas that have been developed by the CTP Energy Team 
and other O&M staff members.  This Opportunity Register is core to ensuring that the facility keeps 
striving for improving electrical consumption and not settling for the status quo.