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Divisions > Air Resources Division > Programs/Bureaus/Units > Stationary Emergency Engines >

Rules/Regulatory

• Amendments to Quad Z, I, and J
• EPA's Response to Public Comments on Proposed Amendments to Quad Z, I, and J
• National Emission Standard for Hazardous Air Pollutants (Quad Z)
• Standards of Performance for Stationary Compression Ignition Internal Combustion Engines (Quad I)
• Standards of Performance for Stationary Spark Ignition Internal Combusion Engines (Quad J)

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