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Utilities Plus Energy Services, Inc. <br />16864 Highway 10 W <br />Elk River, MN 55330 <br />Phone: 763-441-1200 <br />Fax: 763-441-7500 <br />August 8, 2007 <br />Troy <br />Elk River Utilities <br />RE: Testing, calibration, and maintenance on your West substation <br />;~ . ,, <br /> <br />Dear Troy, <br />With regards to your interest in Utilities Plus Energy Service performing the above <br />testing and calibration at your facility we propose the following; <br />(1) SF6 Circuit Breakers <br />• Perform testing on (1) SF6 circuit breakers <br />• Perform all mechanical checks <br />• Perform time travel analysis <br />• Perform optional gas analysis *** <br />• Check breaker contact resistance with a 400amp ductor <br />• Check insulation integrity <br />Perform lubrication of mechanical parts <br />(1) Transformer <br />• Perform testing on (1) transformers <br />• Perform visual inspection <br />• Test operate all auxiliaries <br />• TTR <br />• Power Factor <br />• Oil analytical <br />LTC test and inspection: <br />Testing and inspection will include the following <br />A) Drain LTC chamber into drums <br />B) Open LTC compartment and clean. <br />C) Inspect reversing contacts, movable contacts, stationary contacts, all leads and <br />connections, vacuum bottles and or resistive circuit. <br />D) Filter oil back into LTC <br />E) Furnish a report with the findings. <br />