CONCORD, N.H.—New Hampshire and federal environmental protection agencies want a coal burning power plant in Bow to overhaul its cooling system to restore the health of the Merrimack River.
The draft permit released Thursday wants the plant to convert to a closed cooling system. The PSNH plant currently withdraws 287 million gallons of water a day from the Hooksett Pool segment of the river and returns it at much higher temperatures.
The new system would reduce discharge into the river by 99 percent, the agencies say, adding the current system has substantially reduced fish life. Estimated cost of the project is $112 million -- which would increase customers' bills by about $1.25 per month.
Interested parties have until Nov. 30 to comment on the proposed conditions.