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Nutrient time lag may slow CB cleansing

November 13, 2013 – It could take two to four decades or more to see significant water quality improvements in Chesapeake Bay tributaries on the Delmarva Peninsula because nitrogen-enriched groundwater moves so slowly through the system, according to a new U.S. Geological Survey study.

For the Maryland and Delaware parts of the Delmarva Peninsula, the target is a 25 percent reduction in the 2009 nitrogen nutrient load – about 5,000 tons of total daily nitrogen – by the end of this decade. READ MORE