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Abstract: Session E  1:30 pm (Back to Session E)
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The Upper and Middle Slaughterhouse Run Restoration – A Case Study in the Challenges of Urban Stream Restoration; Owner, Designer, Contractor Perspectives

Eric Duce
Baltimore County Department of Environmental Protection and Sustainability
Towson, MD

Authors:
Eric Duce, Baltimore County Department of Environmental Protection and Sustainability
Justin Lennon, WSP USA, Inc. Water and Environment
Adam Nabors, Environmental Quality Resources (EQR), Inc

The Slaughterhouse Run restoration project is a major environmental restoration undertaking by the Baltimore County Department of Environmental Protection and Sustainability (EPS).  The project includes the restoration of 8,160 lf of 1st, 2nd and 3rd order perennial streams that were systemically impaired.  The project design focuses on the reconstruction of Slaughterhouse Run with a new sustainable channel geometry with inset floodplain benches.  Baltimore County EPS retained WSP as the designer of the project and awarded EQR the construction.

Many unique challenges requiring innovative solutions have been encountered during the design and construction of this project.  The stream system meanders through fully developed suburban neighborhoods in Pikesville, MD and is also constrained by the Baltimore Beltway.  These urbanized conditions created significant construction access challenges complicated by steep terrain and tight corridors through private property. Community buy-in was essential for implementation of the project.  Community outreach was led by EPS, with staff working individually with property owners.  In many cases, detailed negotiations were need and innovative incentives were offered to property owners in exchange for access.  Once access easements were granted, the team faced continual challenges during construction with the narrow access corridors.  The project team will discuss these challenges including vibration monitoring of foundations, steep access paths, and the need for added reinforcement for truck access.

Also, utilities created many unique challenges along the project corridor.  In particular, the unknown conditions and location of sewer laterals presented a unique construction challenge and required close communication between the project team to avoid any major incidents.  Additional topics to be discussed will include construction changes to use innovative proprietary materials to resolve utility conflicts, redlines changes to address bedrock conflicts, and the owner, designer, and contractor perspective on the restoration treatments utilized in the project.

Communication between the team was essential to keeping the project on track. Like many projects, many issues arose that needed to be dealt with in the field. We were able to toss around ideas and solutions that supported the budget, time constraints, and design intent. Open and honest communication was crucial to the success of the restoration.