Lift Station #6

We got word the paving subcontractor had an opening for Saturday 8am 10/21. We have approved a working hours exemption to start paving work at 8am tomorrow.

10/23 Edit; We're working to get barriers between the road and the remaining excavation on site and will open the road as soon as it can be safely done.

Traffic: The road and intersection is schedule to be open by Tuesday, October 24.

On the site, you'll see lots of digging for pipes, delivery for pipes inside the lift station, and electrical transformer work in the next two weeks.

72nd and Cornelia drive opened today with a temporary gravel surface. This intersection will be closed again for a day sometime in October for new curb and pavement.

There are no other updates on schedule for intersection closures, see updates below for general closure guidance.

Today Atlas Foundation is removing sheet pile, so there will be some vibration on site. Deep digging for new pipes to connect the new lift station to the sewer line will occur for the next two weeks.

West 72^nd Street Intersection Closures Update

Due to the complexity of coordinating multiple improvements, the following estimates are subject to change, so check back for more updates.

Oaklawn and Claremore Drive/72nd Street intersection: This intersection will remain closed into October and may have additional closures for intersection improvements related to the separate safe routes to school project.

72nd and Cornelia Dr intersection: The intersection of Cornelia Dr and 72^nd is anticipated to reopen to vehicles on September 25 with a temporary gravel surface. There will be an additional short closure required for the safe routes to school project to finalize curb and paving.

Construction Update:

The next two weeks will see additional heavy excavators on site as we make the connections from the Oaklawn/Claremore/72nd intersection into the new station. The odor control system at the existing station will be replaced with a temporary system and lift station odor sealing to make room for deep pipe work.

Road work and grading will take place during the week of September 18, and curb and gutter will be paved late in the Week of September 25 or early the following week.

West 72^nd Street Intersection Closures Update

Due to the complexity of coordinating multiple improvements, the following estimates are subject to change, so check back for more updates.

Oaklawn and Claremore Drive/72nd Street intersection: This intersection will remain closed into October and may have additional closures for intersection improvements related to the separate safe routes to school project.

72nd and Cornelia Dr intersection: The intersection of Cornelia Dr and 72^nd is anticipated to reopen to vehicles during the week of September 25. We are working to coordinate with the separate safe routes to school project and may be able to limit future closures of this intersection in time and scope. We are unable to create a pedestrian path through this intersection at this time.

Construction Update:

The next two weeks will see additional heavy excavators on site as we make the connections from the Oaklawn/Claremore/72nd intersection into the new station. The odor control system at the existing station will be replaced with a temporary system and lift station odor sealing to make room for deep pipe work.

West 72^nd Street Intersection Closures Update

Due to the complexity of coordinating multiple improvements, the following estimates are subject to change, so check back for more updates.

Oaklawn and Claremore Drive/72nd Street intersection: This intersection will remain closed into October and may have additional closures for intersection improvements related to the separate safe routes to school project.

72nd and Cornelia Dr intersection: The intersection of Cornelia Dr and 72^nd is anticipated to reopen to vehicles on September 20. The intersection will briefly close again in the fall for the separate safe routes to school project. We are unable to create a pedestrian path through this intersection at this time.

Construction Update:

There is a lot of activity on site, new manhole structures are being painted and sealed, workers are forming for a concrete pour in the middle of the week of September 6.

Bypass pumping is coming to an end and the old lift station will take back flow on either September 1 or early the week of September 6.

The week of September 6 will also watermain work will take place in the road while we make more room on the west side of the site to continue deep sewer installation.

West 72^nd Street Intersection Closures Update

Due to the complexity of coordinating multiple improvements, the following estimates are subject to change, so check back for more updates.

Oaklawn and Claremore Drive/72nd Street intersection: This intersection will remain closed into October and may have additional closures for intersection improvements related to the separate safe routes to school project.

72nd and Cornelia Dr intersection: The intersection of Cornelia Dr and 72^nd is anticipated to reopen to vehicles on September 20.The intersection will briefly close again in the fall for the separate safe routes to school project.

Update 8/29, we were unable to create a pedestrian path at Cornelia due to ongoing utility work.

West 72nd Street will be closed from the intersections of Claremore Drive and Oaklawn Ave to Cornelia Drive.

The lift station project requires work to occur in 72^nd Street to install new sanitary sewer pipes under the road while it is closed. The road closure has started. This work was pushed up in the schedule for two reasons. The first is to try to limit impacts to Edina schools and busing. By starting now, a portion of the work can be completed while school is out of session. This work will carry over into the school year. Staff is working with Edina schools and their busing operations near the school. Second, if this work did not occur now, it would be done next spring. This would create impacts to both residents and school operations for a second time. The project team wants to try to limit impacts by constructing a majority of the work this year.

Since the last update we've hit a snag, the dewatering took longer than anticipated but the contractor worked to install a piezometer and more pumps to pull the water level down while watching the pressure so that the base slab could be poured. Magney construction is forming up the final pour for the wet well to bring the structure up to the planned grade in the next week. In the month ahead the project will be moving into the road with rolling road closures of the intersections of Claremore/Oaklawn/72nd and 72nd/Cornelia.

In the last month we've finished sinking the caisson. The final depth was within 0.02 feet of the planned depth and a bottom concrete seal has been poured. Northern Dewatering has set up point wells around the new wet well and has begun dewatering to allow for access to bottom to begin pouring the floor slab and wet well divider wall that will split the space into two wet wells.