Berlin, D., D. Vlassopoulos, M. Kanematsu, J. Dunay, E. Malczyk, and T. Wang.
2019 Real Property Institute of Canada (RPIC) Federal Contaminated Sites Regional Workshop, 4-5 June, Halifax, Nova Scotia. 20 slides, 2019

Public Services and Procurement Canada is conducting risk management studies on sediments within Esquimalt Harbour that contain wood waste deposits from historical activities. Innovative passive porewater samplers using a diffusive-gradient-in-thin-films (DGT) method were deployed for 30 min-24 hrs to quickly and accurately measure porewater sulfide concentrations. Measured concentrations ranged from <1 mg/L to >200 mg/L. An innovative bench-scale testing program was conducted to assess the effectiveness of sand cover mixed with a range of treatment amendments to reduce bioavailable porewater sulfide concentrations in sediments containing wood wastes. Treatment amendments included mineral-based materials such as iron oxides, manganese oxides, and iron carbonates. Vertical profiles of redox zonation and porewater sulfide were measured with DGTs in the amended cover and underlying wood waste sediments to assess the effectiveness of the reactive amendments. The results are being used to design an in situ field pilot study. http://rpic-ibic.ca/images/2019_FCSRW/presentations/Innovative_Treatment_of_Wood_Waste_Impacted_Sediments_Using_Reactive_Amendments_and_DGT_Passive_Porewater_Sulphide_Testing_Techniques.pdf Longer abstract available by clicking on Stream 6d at http://rpic-ibic.ca/en/events/2019-federal-contaminated-sites-fcs-regional-workshops/2019-rpic-fcs-regional-workshop/2019-rpic-fcs-regional-workshop-oral-abstracts/2019-rpic-fcs-regional-workshop-stream-4a-innovation-research-and-development-pfas-assessment.