270 

 

Performance Measures & Results 

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World Water Monitoring Challenge: conducted annually since 2004 

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Send follow-up tour surveys to all scheduled tours of the L/E WWTP -  (100%) with 30% return 
rate; 36 tours given; 33 survey responses received – 92% 

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STEM program participation - Started 2015 

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Water industry information booth participation - 2 times 

 

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) 

Energy Improvement Program implemented by staff 

Performance Measures & Results 

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Reduce electric energy requirements for wastewater treatment by 2% - Kwh/million gallons 
influent flow  (2012 to 2015): 12.3% reduction 

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Process Efficiency program with energy provider (XCEL Energy): Over $100,000 in provider 
rebates for energy optimizing/reducing projects since 2006 

 

 

ENERGY GENERATION & RECOVERY 

 

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

 

Internal energy sources evaluated (e.g., biogas, hydropower, heat in wastewater), and/or 
renewable energy sources evaluated on an ongoing basis (e.g., solar, wind, co-digestion)  

 

Recovery of digester gas in a combined heat and power (CHP) system, and boilers in place (for 
process and building heating)   

 

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

RFI issued for ways to reuse methane gas produced in anaerobic digesters - 2015 

Calculate carbon sequestration through the treatment process – in progress 

Performance Measures & Results 

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RFI response: 7 responses to evaluate 

 

NUTRIENT & MATERIALS RECOVERY