11-09-2015 Council Minutes - Laserfiche WebLink

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MINUTES OF THE ORONO CITY COUNCEL MEETING Monday, November 9, 2015 7:00 o'clock p.m. 4. MET COUNCIL SEWER MAIN PROJECT — JEFF SCHWARZ, P.E. (continued) Jeff Schwarz, Professional Engineer with the Metropolitan Council, stated the project involves force main number 7113 and meter 435A and B improvements. Schwarz indicated he has been working with Mr. Edwards to get the project designed, scheduled and staged to minimize impacts to the City and also still give the MCES a robust system and capacity for handling future flows as development proceeds. This particular project starts at Orono Orchard Road to the west, all along Shoreline Drive, past the ramps on Highway 15, and then to the existing lift station in Wayzata. The driver of the project is the condition of the existing pipe. Schwarz stated the MCES has some force main pipes that they have found to be in poor shape as well as some redundancy issues. Schwarz stated there is one force main that serves lift stations in Orono and that they will be adding a force main in the area of Orono Orchard Road. Since there is currently only one force main, the MCES cannot take it out of service to check its condition. Part of the project is to provide that second line so the original force main can be evaluated. This project will include installation of approximately 620 feet of 20 -inch diameter force main that will be installed by trenching and tunneling. Schwarz indicated they will be tunneling underneath the trail at Orono Orchard Road and the ramp area. There will also be 3,000 feet of 36 -inch diameter gravity pipe, which the two force mains will dump into and drain into L26. There will be almost two miles of pipe and maintenance holes for the gravity pipe. A new meter for the force main will be installed as well as soil erosion control. Schwarz indicated they will make sure that the appropriate permits are obtained and that they will avoid any wetlands. Site restoration will be done once the project is completed. Schwarz noted they have the project split into two phases. Phase one is to install the force main on the north side of Shoreline Drive along with some connection valve structures at the Orono Orchard intersection. This work will be done in the winter of 2016, with work hopefully starting the second week of December. Schwarz noted this area will be done in the winter because a lot of the work is done adjacent to wetlands and it works better when the ground is frozen to conduct that type of work. This phase will not require any road closures. The area will be separated from the road with J barriers on the north side of the road and the excavation will happen in the ditch beside it. Schwarz stated they hope to have that 600 feet done in approximately five months. Some of the features of the work involved with Phase I work include the north shoulder of Shoreline Drive as well as some staged closure of the intersection of Orono Orchard Road. The project is currently set up so a temporary road will be constructed for the first stage of the shutdown allowing for two lanes of traffic then when work commences on the west side, there will be a road closure, with no traffic being allowed on Orono Orchard Road going eastbound. Schwarz stated they will be able to maintain a right turn from the westbound lane of Shoreline Drive. Schwarz stated it is their understanding that the property owner in the immediately vicinity has access through a different location so they will be able to take the other access around. A representative from Brown & Caldwell explained the proposed detour. Traffic from Orono Orchard Road will come down from the north, with approximately one block closed from Fox Street to County Road 15. The southbound traffic will need to go west on Fox and south on Brown in order to go east. Eastbound traffic on CR 15 will not be able to turn north on Orono Orchard Road but the lane going westbound on CR15 will be maintained. An extra gravel shoulder will also be built. Page 2 of 24