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� <br />January 26,2005 � � � � � � � <br />E=�[:�l�Ff R 5 <br />Mr. Lonnie Brokke, C.P.R,P <br />Directorof Parks and Recreation <br />2661 Civic Center Drive <br />Roseville, Minnesota 55113 <br />Re: Proposal for Professional Engineering Services (REVISION 2) <br />John Rose Oval - Refrigeration System Repairs and Improvements <br />Dear Mr. Brokke: <br />Thank you for taking the time to meet with Jim DeBenedet and myself. Stevens Engineers is pleased to <br />have the opportunity to present a proposal to provide professional engineering services for the refrigeration <br />system repairs and improvements at the John Rose Oval. We have the necessary experience in designing <br />refrigeration systems and ice systems for ice rink facilities to successfully complete this project for the City <br />of Roseville. <br />Project Understanding <br />The City of Roseville is seeking an engineering firm to provide design and other engineering related <br />services for the rehabilitation of the refrigeration chiller vessel and refrigeration system improvements at <br />the John Rose Oval Skating Facility. <br />The John Rose Minnesota Oval is a skating facility that host <br />international competitions in addition to serving the local <br />skating enthusiast. The 110,000 square foot ice sheet <br />includes a 400-meter speed skating track, a bandy rink, <br />hockey rinks and recreational skating. The construction of the <br />facilitywas completed in 1993. <br />The existing refrigeration system is an indirect ammonia and <br />calcium chloride system. The capacity of the system is <br />approximately 800 tons. The chiller, surge drum and screw <br />compressors are industrial grade refrigeration The John RoseOval hasone ofthe largest <br />e ui ment manufactured b Vilter Manufacturin . �ef�ge�at�°n Sy�ms SeW��g a� �°e �""� ��k <br />q p y g facility. <br />The brine pumps circulate the calcium chloride brine through several piping zones in the concrete ice rink <br />floor with a total flow rate of approximately5500 gpm. The refrigeration system at the John Rose Oval is <br />one of the largest systems serving an ice skating facility. For comparison, a typical single ice rink <br />refrigeration system has a capacity of around 100 tons while the Super Rink in Blaine operates a 315 ton <br />refrigeration system to serve four ice rinks. <br />C:iMarketing12004 ProposalslJohn Rose Oval.doc <br />1656 Livingstone Rcad • Hudson. Wf 54016 <br />715-386-5$19 • 651-436-2075 . 800-822-7670 . fax: 715-386-5879 • www.stevensengineers.com <br />