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From www.cleanoceanaction.org: "Once freshwater effluent has been discharged into the saltwater environment, dilution begins. The effluent rises from the diffuser where it mixes with ocean water. The rising brew of freshwater and saltwater mixing is a mixing zone and wastefield. At some distance from the outfall, the effluent plume is undetectable because of complete mixing and dilution. The distance that a plume travels depends on many conditions in the ocean, including tides, currents, winds, and salinity." |