Federal hydropower operating agencies are working to coordinate
total dissolved gas (TDG) reduction efforts at Grand Coulee and Chief Joseph
dams.
Representatives of Bonneville Power Administration, the Army Corps
of Engineers, and the Bureau of Reclamation met last Thursday (Dec. 10)
and again this Monday (Dec. 14) to discuss a coordinated evaluation of
potential structural and operational changes that would reduce TDG generated
by spill.
The National Marine …