We will work with local youth and expert knowledge holders in Arviat and Pond Inlet to enable those communities to monitor and assess (even beyond the life of the project) the impact of particulate contaminants derived from ships in both the air and surface waters. Contaminants of interest are principally related to fuel emissions, grey water discharge, paint-derived microplastics from ship hulls, and plastic macro-litter. This will be achieved by using air filtration units and depositional dust gauges to quantify the concentration and size distribution of air-borne particulates, water sampling for microplastics using local boats that will deploy a 300um manta net. In addition to community-based sampling, we will sample using ships of opportunity. We will sample a ship’s uncontaminated sea water supply using customised filtration systems to identify microplastics. At shore locations along the vessel routes, we will take sediment samples (100g) in metal bottles to examine microplastics, and survey shorelines for macroplastic debris.