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Union River Study to begin August 6


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Contact Information: Tim Bridges, U.S. Environmental Protection Agency Office (617) 918-8603 cell phone (617)223-1373 Don Albert, ME Department of Environmental Protection (207) 287-3901

News Release
U.S. Environmental Protection Agency
New England Office
August 6, 2007

Contact Information: Tim Bridges, U.S. Environmental Protection Agency

Office (617) 918-8603 cell phone (617)223-1373
Don Albert, ME Department of Environmental Protection (207) 287-3901

UNION RIVER STUDY TO BEGIN AUGUST 6

(Boston -- August 6, 2007) Scientists from the U.S. Environmental Protection Agency’s New England Regional Laboratory will begin a sediment oxygen demand (SOD) study of the Union River in the estuary area south of Ellsworth, Maine on August 6th. EPA’s Tim Bridges, Tom Faber, Cynthia Veit and interns will collect sediments in the Union River for analysis of Sediment Oxygen Demand (SOD), total organic carbon and grain size.

SOD studies investigate the rate that dissolved oxygen (DO) is removed from the water column due to the decomposition of organic material in the sediments. SOD may be a major cause of low dissolved oxygen (DO) in water bodies. The Maine Department of Environmental Protection (MEDEP) will use SOD rates for modeling the Total Maximum Daily Load (TMDL) of the Union River. For more information on TMDLs, see EPA’s website (http://www.epa.gov/owow/tmdl/intro.html).

EPA staff will set up the Biology Mobile Laboratory for onsite SOD analysis at the town of Ellsworth Boat Launching Area in Ellsworth, Maine and will collect data from five stations along the river between Ellsworth and Surry.



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