Project Details
Banner worked with the city to evaluate multiple temporary methods to convey wastewater to the WWTF until the permanent forcemains could be constructed. The city was able to utilize a short-term solution to convey the wastewater over the river by utilizing a pipe supported by a suspension bridge. This short-term solution was only suitable for temperatures above freezing, and a permanent solution was needed prior to winter weather.
Project Elements Provided
Banner was able to work with the city to design, bid, and provide construction administration and observation services, which resulted in the installation of three new forcemains around 3.5 months after the loss of the original forcemains. Banner minimized the design, bid, and construction durations using several methodologies in order to ensure construction was completed quickly.
Banner worked with the city, DANR, and others to provide status updates and discuss incident response. Banner provided surveying services for the land near the river for city purchase. Banner also worked with WWTF staff to mitigate the effects on the biological processes of the WWTF from the loss of flow while the temporary solution was constructed.
The new forcemains were horizontally directionally drilled deeper below the river and further away from the river's edge than the original forcemains to ensure more resilience from potential future riverbed erosion. The work also included trench-installed forcemain headers on either side of the river to allow for redundancy between the forcemains. Finally, the work included plans to connect to future infrastructure at the WWTF to the proposed forcemain.
Wastewater
Surveying
Environmental
Civil / Municipal
