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. • �� <br />�er� <br />STEVENS <br />ENGINEE S <br />May 5,2005 <br />Mr. Lonnie Brokke, C,P.R.F <br />Director of Parks and Recreation <br />2661 Civic Center Drive <br />Roseville, Minnesota 55113 <br />Re: John Rose Oval — Refrigeration System Repairs and Improvements Repart <br />Our File No. 6023 <br />Dear Mr. Brokke: <br />Enclosed is ihe report on the John Rose Speed Skating Oval's refrigeration system repairs and <br />improvements. Also included in this report are cost estimates for renovating or replacing the ice <br />system at the RSVC Arena. <br />The findings of this report show that re-tubing the existing chiller is much less expensive than t1�e <br />other options considered. To reduce the concern of corrosion in the system we evaluated an <br />switching from a calcium chloride solution to an ethylene glycol solution, however, due to cost <br />and loss of system efficiency we do not recommended this option. Our recommendations are <br />summarized on the final page ofthis report. <br />After you have had time to review this information feel free to call nie with any questions or <br />comments. Our office number is 651.43�.2U75 <br />Yours very truly, <br />STEVENS ENGINEERS, 1NC, <br />��� ��� <br />Scott A. Ward, P.E <br />Project Manager <br />Enclosure <br />1 <br />1656 Livingstone Road - Hudson, WI 54016 <br />715-386-5819 - 651-436-2075 • 800-822-7670 . fax: 715-386-5879 • www,stevensengineers.com <br />