Abstract: Session E 2:30 pm (Back to Session E)
Expanding Asset Protection to Include Stream Restoration
Hazen and Sawyer
Throughout the Southeast and Mid-Atlantic, urban streams have eroded and incised over the years from more intense flow regimes. One by one, these streams expose sanitary assets buried decades ago. The repair and protection of damaged and exposed sanitary assets is often seen as a more immediate need than stabilizing the impaired stream that is often the culprit for the damage. The site evaluations commonly arrive at the question of spot repair and localized hard armoring versus addressing incision or lateral migration of an impaired and incised stream. Separate departments and separate budgets for municipal sanitary and stormwater can make coordination difficult, and the fact that critical asset exposures often appear one at a time can make larger and more expensive stream restoration solutions difficult to justify; however, there are clear benefits in providing a more holistic solution.
This presentation will focus on reasons to consider protection of sanitary assets and the restoration of degraded streams together for the best results including long-term asset stability, protection of other infrastructure, water quality, and added ecological benefits. Included will be evaluation tools and criteria for making design decisions, and discussion about what can be done by both public utilities and private consultants to ensure that the most efficient and effective approaches are considered and implemented. We will show how two different municipalities used the need for asset protection as an opportunity to evaluate surrounding stream conditions and then make informed decisions about the most effective locations and approaches for asset protection and stream restoration.