Lift Station #6

Startup week is going well, and the end of construction is near. Here are the remaining steps and approximate times:

1. April - Startup of new station, connection of new pipes, demolition of old station starts
2. May - Demolition of old station finishes, final grading starts
3. June - Final grading finishes, driveway, sidewalk preparation, paving starts,
4. July - Paving and sidewalk finishes, final seed and landscaping

We're coordinating with a separate contractor for the related pedestrian connections and intersection improvements. We'll update with more details for those improvements when they are better known.

During the week of April 1, the new station will be programmed, tested and commissioned. The new station will run with the old station off, but available as backup as the operators train on the new station during the week and over the next weekend.

Following the testing and commissioning period, the old station will be demolished and final site utilities will be installed.

The old station served for 70 years!

Lot of action but nothing much to see these days, here's a summary of the work inside the station:

1. Insulation, roofing materials
2. Framing, drywall
3. painting, coatings
4. electrical, communications
5. plumbing, pumps

This week roofing, insultation and waterproof membrane are going on. Once the structure is water tight internal work such as dry wall and electrical can begin.

The station is going vertical this week and next with precast concrete panels, welding, pump lifting beam, roof truss installation, fence and electrical pad installation.

72nd and Cornelia is open: This intersection is being completed for the pedestrian safety project. Pavement is planned for Friday or Saturday this week.

72nd, Oaklawn and Claremore is closed to traffic and will be opened to pedestrians this week to prepare the the neighborhood Halloween Parade event this Sunday. This intersection is paved but there is a large hole just off the pavement on the site that is currently blocked with a variety of dewatering pipes that are supporting the deep pipe work on site. (pictured) We hope to open this intersection to traffic again around 11/3

This week on site there will be continued deep pipe installation work. Next week will include electrical transformer installation and shallow site pipework, and the beginning of the above grade structure if the weather cooperates.

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.