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Underground Water Vault Excavation on SE Powell Boulevard Underway

The water vault excavation project on SE Powell Boulevard between SE 97th Avenue and SE 100th Avenue is underway and proceeding on schedule.

Excavation a 30-foot wide by 60-foot long space.
Excavation underway

Crews, managed by the primary Contractor Hoffman Construction Company, are in process of excavating a 30-foot wide by 60-foot long space under the westbound lane in the 9700 block of SE Powell Boulevard. Shoring is being installed to provide safety for workers entering the trench.

Installing shoring system
Installing shoring system

Over the next couple months, a 23-foot wide by 40-foot long water vault will be constructed in the excavation’s footprint. Once excavation is complete, crews will construct the slab on grade for the vault, install the new connection piping and then finish constructing the vault.

Aerial photo of Kelly Butte Reservoir - January 2014  
Aerial photo of worksite, January 2014

Construction of the vault is anticipated to be completed in June 2014, under normal weather conditions. The water vault will house complex piping that will connect to the city’s new 25-million gallon underground reservoir atop Kelly Butte. The reservoir, scheduled for completion in 2015, is 60 percent complete.

For additional information on the Kelly Butte Reservoir project, visit https://www.portlandoregon.gov/water/kellybutte.

Lindsay Wochnick
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