Figure 4. Summary of the peak oil concentrations in the water column at 1-5m depth below the oil which had been sprayed with dispersant. before dispersant application ＜2 ppm concentrations of dispersed oil were restricted to the top 1m of the water column. Following treatment with dis-persant 1-10 ppm level oil concentrations were seen to penetrate down to 5m indicating a suc-cessful dispersant operation.
