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City of Orono Project No: 000139-10047-0 <br />Old Crystal Bay Road Reconstruction Page 9 <br />CITY OF ORONO – OLD CRYSTAL BAY ROAD RECONSTRUCTION <br />4.0 Water Main Improvements <br />The majority of the existing water main was also installed in approximately 1962, with the northern <br />portion (approximately 700 feet) replaced in 1997 when the Ice Arena was constructed. The water main <br />runs along the west side of Old Crystal Bay Road from Old Highway 12 to approximately 280 feet south <br />of 6th Avenue. The older portion of the water main is 8 inches in diameter and is cast iron pipe. Given <br />the age of this pipe, we recommend it be replaced as part of this project. The newer (northern) portion <br />of the water main is 12 inches in diameter and is constructed of ductile iron pipe. We do not recommend <br />this portion be replaced as part of this project. <br />The proposed water main improvements are shown in Figure 3. These improvements include replacing <br />the existing 8-inch cast iron water main with 8-inch PVC water main. In addition, all hydrants and gate <br />valves along the older segments will be replaced, and water services will be replaced between the main <br />and the right-of-way line. <br />Water service will be maintained throughout the project by using temporary above-ground water mains. <br />Individual users will be notified and may experience short disruptions in service as they are switched from <br />the existing system to the temporary system and back to the permanent system. <br />Cost estimates for the proposed water main improvements are presented in the Appendix. <br />Item #10 - CC Agenda - 10/25/2010 <br />Old Crystal Bay Road Reconstruction Feasability Study [Page 12 of 42]