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GREAT RIVER <br />ENERGY® <br />12300 Elm Creek Boulevard • Maple Grove, Minnesota 55369-4718 • 763-445-5000 Fax 763-445-5050 • www.GreatRiverEnergy.com <br />Apri128, 2009 <br />Ms. Rebecca Haug ~ ~^ <br />Environmental Administrator ~ ~~~' <br />~~ <br />City of Elk River °~~' <br />13065 Orono Parkway i o6' ~~ <br />Elk River, MN 55330 ~ `~ <br />Subject: Elk River Station -Waste to Energy Plant <br />Request to Test Burn Tire Derived Fuel <br />Dear Ms. Haug: <br />Great River Energy's Waste-to-Energy Plant in Elk River is looking at fuels to <br />supplement the Refuse Derived Fuel (RDF) that has served as the primary fuel source for <br />the plant in the last 20 years. We are planning to test burn tire-derived fuel (TDF) and <br />understand that the City of Elk River is interested in more information before issuing us <br />written approval to conduct the test burn under our existing Conditional Use Permit. This <br />letter provides a summary of the test burn and'the information you have requested. Of <br />note, our air emissions permit issued by the Minnesota Pollution Control Agency <br />currently allows us to burn an average of 100 tons of TDF per day. If after reading this <br />letter you need any additional information, please contact us. <br />Background <br />RDF has been provided to the Waste-to-Energy Plant by Resource Recovery <br />Technologies (RRT), also located in Elk River, which processes municipal solid waste <br />into RDF. The municipal solid waste is currently supplied to RRT by amulti-county <br />consortium under along-term contract that is scheduled to expire in August 2009. At this <br />time, Great River Energy believes that the counties and RRT may not be able to execute a <br />new contract that will guarantee sufficient fuel for our Waste-to-Energy Plant to continue <br />operating it at its rated capacity. Accordingly, we are investigating alternative fuels that <br />could supplement the RDF. <br />At this time, Great River Energy is seeking City approval only to conduct a TDF test <br />burn. If the test burn is successful, we would seek the City's approval to supplement the <br />RDF with TDF on a long-term basis. It is our intent to continue to use RDF as the <br />primary fuel at the plant and to only use TDF to supplement the RDF. <br />A Touchstone Energy Cooperative j~~i ( ~ Contains 100% post consumer waste <br />~- <br />