A city’s growth comes with an increase in water demand. The City of Portland is anticipating an increase in water demand and is improving one of the most crucial aspects, water pumps. The Fulton Pump Station feeds water throughout the city; however, since its inception in 1922, only the pump has been expanded. The City of Portland, decided that it is time to replace the Fulton Pump Station, and James W. Fowler Co. was selected as a general contractor. The project entailed improving the old pump station, constructing the new Hannah Mason Pump Station (HMPS), installing multiple pipe works, and providing supply connection to the main supply line that supports Portland’s Westside customers, the Washington County Supply Lines (WCSL).
This project contributed to an increase in pumping capacity by 50 percent, from 12 MGD to 18 MGD, and added a total of 700 LF of new suction and discharge piping and 450 LF of distribution mains. One of the challenges with piping installation is navigating the city’s underground that is highly congested with existing buried utilities, force main sewer pipes and connections, and stormwater control and detention facilities.
Improving a public utility facility in a bustling urban area comes with the burden to not disrupt the city’s significant activities, including local businesses, heavy traffic, and other construction projects. JWF was able to accomplish that by coordinating with the city, state, and private authorities, local businesses, as well as other contractors to strategically schedule work, maintain public access to the park, minimize impact on the community, avoid interfering with other contractor’s work schedules, and complete the project on time and within budget. Aside from logistics and scheduling, a crucial component of this project is to avoid and minimize water disruptions.
The new connection to the WCSL pipeline, a major water delivery supply line, was installed in a tight work schedule and with careful coordination to minimize disruptions. Within the tight time frame, 20 LF section of the 60” WCSL was replaced with a 60” cement lined and coated pipe. Finally, a 30” steel discharge line and 24” ductile iron supply line was installed; some sections required trenchless installation under existing railroad tracks. This pipeline connects the original Fulton Pump Station to the new Hannah Mason Pump Station.
The new Hannah Mason Pump Station (HMPS) building, which housed the 5 new turbine pumps, is also utilized to be a PGE equipment room, public restroom, and park equipment storage. The HMPS also features vegetative eco-roof system, louvers for HVAC, and flood louvers on the ground level. Inside, safety has been a huge consideration, and a permanent roof tie-down fall restraint and fall-arrest system were installed for workers. For aesthetic congruence purposes, the finished concrete wall is both corrugated and smooth with both colored and stained areas that complement the park with a subtle design meant to blend into the surrounding Willamette Park landscape. The finishing touches include grading and landscaping, greenway improvements, and facility start-up, testing, and certification of the new pump station.
The concrete work on the HMPS has brought accolades to James W. Fowler Co. and the project team with two awards from the Oregon Concrete and Aggregate Producers Association: Excellence in Concrete, Judge Choice Award (2018), and Excellence in Concrete, Craftsmanship Award (2018).