Parker Pump Station Replacement Project

Crews continue with the construction of the new underground pump station structure with placing rebar and laying out hatches in preparation of pouring the deck of the new storm water wet well and valve vaults. This will complete the major structural work for these structures. In addition, utility work in Coronado Avenue is underway with installation of the new 48-inch storm drainpipe. Crews will also install the force main piping at the rear of the new pump station in the coming weeks, and with the completion of this work, the construction of the new Controls Building can begin.

The Contractor has been maintaining the Best Management Practices (BMPs) onsite, and preparations have been made for anticipated rain events; this includes street sweeping and removing the inlet protection, allowing runoff to enter the storm drain system. The City has staged two dedicated, portable sewer bypass pumps at the station. One is already connected for an efficient start up, should it be needed, and a second is at the station for redundancy. A generator is ready to be powered up if there is an electrical outage. Other portable pumps are available for use around town. Additionally, we have spare sewer and storm wet well parts on-hand and the pump station alarms have been verified. During a major storm event, residents can stay up to date by checking the City website or social media sites.

Construction continues on the Parker Pump Station project. Large excavation is taking place, and a new 48-inch storm drainpipe is being installed on the new trash rack structure. Crews have excavated the area to the west of the new storm drain wet well, in order to construct a valve vault structure. Utility installation has also started along Coronado Avenue. This work involves constructing new sewer and storm drainpipe and manholes.

The intersection closure at Coronado Avenue and Eighth Street remains in effect with an anticipated reopening in spring, 2025. This will allow the street work to be completed and will keep pedestrians and vehicles safe around the work zone.

Image Caption

The construction on the new Parker Pump Station at Eighth Street and Coronado Avenue is progressing. Recently, the walls for the new storm water trash rack structure were poured and the City contractor is installing the interior walls and the pump pedestals inside the storm water wet well.

Ongoing work is progressing on the waterproofing of the new pump station structures and backfilling the large excavation. Once completed, the Parker Pump Station will improve operational efficiency and prevent flooding in homes and stormwater.

The new storm water wet well walls were poured on March 18, marking a significant milestone in the project. A total of 41 concrete trucks were onsite throughout the day with a total of 400 cubic yards of concrete placed. Since then, the contractor has been focused on curing the new walls, waterproofing the structure and partially backfilling the deep excavation.

In the next few weeks, the contractor will be forming and pouring the interior walls of the storm water wet well structure and constructing the new influent storm water trash structure, designed to capture any debris prior to entering the wet well structure.

The temporary storm bypass system put in place due to the January 22 storm event has been removed because the existing storm water pumps have been repaired. Construction operations resumed at the end of February. The City contractor Filanc has started placing the outside wall formwork for the new storm water wet well structure. The formwork or surface of the form and framing used to contain and shape wet concrete until it is self-supporting is now being placed and is expected to be completed within the next two weeks.

Progress on construction of the new Parker Pump Station was significantly impacted by the rain event that took place on January 22, 2024. Since that time, Filanc has been assisting the City in recovery efforts and has implemented a complete bypass of the storm water system, while the City works to repair the existing storm water pumps which were damaged during the storm.

The bypass system was designed and installed within a week to prepare for the subsequent storm – a remarkable accomplishment given the layout of the site and the pump capacity needed (36,000 gallons per minute). Work on storm water pump repairs is currently on track to be completed in early March 2024 (or sooner) and will allow Filanc to return to “normal” construction operations.

Construction of the project is progressing inside the large excavation; the inside wall forms have been set for the new storm water wet well and now the reinforcement is being placed. The concrete pour for the walls is anticipated to take place in late January which will mark a significant project milestone.

The project schedule has been updated and due to unanticipated procurement lead times for certain items, the revised project completion date has been extended to Spring 2025. The City and Filanc have collaborated in an effort to reduce the impacts to the schedule with looking at alternative suppliers, cost incentives, etc.; but labor shortages, along with a significant increase in demand for products have been experienced industry-wide which have resulted in lead times as long as 60 weeks for fabrication of some components. The City will continue to explore other avenues to expedite the materials in hopes to improve the completion date.

In addition, the intersection closure will extend to Summer 2024. This extension is necessary to accommodate the revised project schedule and associated construction operation sequencing.

The City appreciates the community's continued patience during construction.

The City contractor has poured the floor slab of the new storm water wet well and partially backfilled the large excavation to the top of the floor slab. Preparations are now taking place to install the wall forms of the structure with an anticipated concrete pour date in January.

The contractor has completed the waterproofing on the exterior of the walls for the flowmeter vault and has formed the deck of the structure. Work continues to progress on installing new sections of 24-inch and 54-inch pipelines at the rear of the site. Work continued in the large excavation with placement of 3 feet of crushed rock and geotextile fabric; a waste slab was poured, and the bottom of the waterproofing material has been installed. In the coming weeks, the contractor will be placing the reinforcement for the floor slab.

The City contractor is continuing work on the flowmeter vault, which is in the rear of the site with the concrete pour, for the walls that were finished last week. Crews are working to strip the formwork to allow for the installation of the waterproofing material prior to backfilling. The progress for the large excavation has slowed with additional shoring work; an additional 3-4 foot of excavation is needed for the contractor to move on to placing the materials for the foundation for the storm drain wet well structure.