team photo

Figure 1
project photo

Figure 2
project photo

Environmental Engineering
Team 10

Team Members

Advisor

William A. Adsit
Nissrine Essafi
Samuel Worobel

Maria Chrysochoou, Amine Dahmani, and Tim Vadas

sponsored by
Sponsor Image Not Available

Centredale Manor Restoration Project: Allendale Pond Sediment Remediation

The Centredale Manor Restoration Project (CMRP) is an active Superfund clean-up site in North Providence and Johnston, Rhode Island. The Source Area (SA) of the CMRP once contained a chemical plant and a drum reconditioning facility whose operations resulted in releases of 2,3,7,8-Tetrachlorodibenzo-p-Dioxin and its congeners (dioxin) into the local environment, including two dammed ponds downstream of the SA. Allendale Pond (AP) – the pond immediately adjacent to the south of the SA – contains sediment contaminated with dioxin and was the subject of this project.
Our team was tasked with compiling environmental sampling data of dioxin concentrations taken from AP; utilizing professional statistical software to analyze that data to determine compliance with regulatory limits for planned remediation by excavation; considering and recommending sediment dewatering and disposal methods; and considering an alternative remedial option: armored capping with a chemical isolation layer.
Based on regulatory cleanup goals and available data, the team utilized statistical software to analyze sampling data and compute the UCL95 using USEPA-approved statistical methods. In addition, the required excavation, dewatering and disposal of AP sediment were estimated based on analytical and statistical results, and an alternative remedial design was made.