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<br />CITY COUNCIL <br />AGENDA ITEM 6 D <br /> <br />STAFF ORIGINATOR : Jason C. Wedel, City Engineer <br /> <br />MEETING DATE : May 13 , 20 12 <br /> <br />TOPIC : Consider Resolution No. 13 -61 Ap proving Change Order No. 1, <br />Otter Lake Road Street and Utility Improvements <br /> <br />VOTE REQUIRED : 3/5 Vote Requ ired <br /> <br />BACKGROUND <br /> <br />At the March 11, 2013 meeting, City C ouncil awarded the Otter Lake Road Street and Utility <br />Improvements to Arnt Construction Company , Inc. Constr uction is anticipated to start this week. <br /> <br />After the Council awarded the contract for this project , City Staff discussed the proposed gate <br />valves that were to be installed on the 16 -inch trunk watermain. The original plans and <br />specifications included using butterfly style valves and boxes. These valves are common because <br />they are the least ex pensive. However, when it becomes necessary for the utility department to <br />work on the watermain, the butterfly valves can be difficult to close completely. <br /> <br />The alternative to the butterfly valve is a traditional gate valve and box. All of the City’s s maller <br />valves throughout the City are gate valves and they are more effective at closing completely. Based <br />on past experience, City staff would therefore like to include a change order to revise the valves <br />specified for the Otter Lake Road Street and Util ity Improvements. <br /> <br />This project has two 16 -inch valves. The cost per butterfly valve bid was $3,050 per valve. The <br />cost to go to a gate valve is an additional $5,390 per valve for a total cost of $8,440. The total <br />change order for modifying the two valv es is therefore $10,780. <br /> <br />Financing for this project as originally proposed is still sufficient with the proposed change order. <br />A breakdown of the construction cost is as follows: <br /> <br /> Original Contract Amount $326,366.20 <br /> Change Order No. 1 $ 10,780.00 <br /> Total Construction Cost $337,146.20 <br /> <br /> Original Engineer’s Estimate $411,057.00 <br /> <br />RECOMMENDATION <br /> <br />Approve Resolution 13 -61 , Ap proving Change Order No. 1, Otter Lake Road Improvements . <br /> <br />ATTACHMENTS <br /> <br />1. Resolution No. 13 -61