Here are helpful resources about the Portland Harbor Superfund Site

EPA website

DEQ website


An acoustic doppler current profiler (ADCP) is used to measure how fast water is moving in Swan Island Basin

Sampling completed

Environmental samples have been collected in the Swan Island Basin Project Area from riverbanks, sediments, and stormwater. In addition, hydrodynamic, geotechnical, and habitat conditions were studied. The information gathered will be used to design the remedy for the Swan Island Basin Project Area.

2,340 Total Samples Collected

  • 267 Sediment Cores – over 1,000 samples
  • 311 Soil Cores
  • 420 riverbank samples
  • 33 stormwater samples
  • 26 stormwater solids samples