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New Hampshire Department of Environmental Services

Media Center
DATE: March 9, 2009
CONTACT: Michelle Andy, 603 271-6793
Kathy Brockett, 603 271-6284

DES Issues Temporary Permit for PSNH Merrimack Station
Flue Gas Desulphurization System

Concord, NH – The New Hampshire Department of Environmental Services has issued the final Temporary Permit for the installation and operation of a wet, limestone-based flue gas desulphurization system (FGD system) at Public Service of New Hampshire (PSNH), Merrimack Station located in Bow. PSNH requested the Temporary Permit to install the FGD system to control mercury emissions at the Merrimack Station in compliance with state law. The FGD system will also provide a co-benefit by removing sulfur dioxide emissions. This Temporary Permit also contains applicable monitoring, performance testing, recordkeeping and reporting requirements.

The final Temporary Permit, final Engineering Summary, the Findings of Fact and Director’s Decision, Temporary Permit Application and Air Dispersion Modeling Analysis Protocol and Report are available by following the links listed below. Please direct any questions to Michele Andy at (603) 271-6793 or by e-mail at

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NH Department of Environmental Services | 29 Hazen Drive | PO Box 95 | Concord, NH 03302-0095
(603) 271-3503 | TDD Access: Relay NH 1-800-735-2964 | Hours: M-F, 8am-4pm

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