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GUARANTEE MANAGEMENT <br />CITY OF SOUTH BEND: PINHOOK WTP IMPROVEMENTS PROJECT GUARANTEED SAVINGS CONTRACT <br />ENERGY SAVINGS ESTIMATE APPROACH <br />D. Note how an Energy Savings estimate will be prepared and applied to the process. <br />As outlined in section B above, Reynolds Construction will develop a baseline for energy consumption using <br />manufacturers operating data on equipment. This equipment could be pumps, motors, or ancillary devices which <br />qualify for energy savings opportunities. Reynolds will model the energy consumption prior to and after the system <br />has been optimized with more efficient equipment and/or processes. A sample 20 years energy savings calculation <br />would be as follows: <br />20 YEAR ENERGY SAVINGS - SAMPLE CALCULATIONS <br />CURRENT REVISED <br />SYSTEMSYSTEM <br />Electric Power$ 174,059$ 152,055 <br />Total 20-Year Energy Savings$ 440,071 <br />EXISTING SYSTEM <br />Electric Power Usage Utility Fee = $ 0.05 /kW-hr <br />Item# UnitsBHP/UnitMotor Eff.Hrs/DayDays/WkWk/Year$/Yr <br />WWTP TREATMENT @ 2.0 MGD <br />Primary Pumps445.091%24.0752$64,428 <br />Primary Screen212.091%24.0752$8,590 <br />Aeration Rotors440.091%24.0752$57,270 <br />WAS Pump18.088%24.0752$2,978 <br />Anaerobic Mixer210.088%24.0752$7,445 <br />Clarification11.5083%24.0752$592 <br />Addl. Return Sludge Pumping115.090%24.0752$5,459 <br />Disinfection18.090%24.0752$2,911 <br />Sludge Drying120.090%24.0752$7,279 <br />$156,953 <br />Annual Cost <br />Collection Pumping @ 2.0 MGD <br />Pumps259.394.1%10.0752$17,105 <br />$174,059 <br />TOTAL ANNUAL <br />MODIFIED SYSTEM <br />Electric Power Usage Utility Fee = $ 0.05 /kW-hr <br />Item# UnitsBHP/UnitMotor Eff.Hrs/DayDays/WkWk/Year$/Yr <br />WWTP TREATMENT @ 2.0 MGD <br />Primary Pumps445.091%22.0752$59,059 <br />Primary Screen212.091%24.0752$8,590 <br />Aeration Rotors340.091%24.0752$42,952 <br />WAS Pump18.088%24.0752$2,978 <br />Anaerobic Mixer210.088%24.0752$7,445 <br />Clarification11.5083%24.0752$592 <br />Addl. Return Sludge Pumping115.090%24.0752$5,459 <br />Disinfection18.090%24.0752$2,911 <br />Sludge Drying120.090%22.0752$6,672 <br />$136,660 <br />Annual Cost <br />Collection Pumping @ 2.0 MGD <br />Pumps259.394.1%9.0752$15,395 <br />$152,055 <br />TOTAL ANNUAL <br /> <br /> <br /> <br /> <br />Page | 52 <br /> <br />