Air Plan Approval; New Hampshire; Ambient Air Quality Standards
Primary source
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Issuing agencies
Abstract
The Environmental Protection Agency (EPA) is proposing to approve most of a State Implementation Plan (SIP) revision submitted by the State of New Hampshire. This revision updates the State regulation containing ambient air quality standards. EPA is proposing to approve all the State's updated standards, except the primary annual fine particle (PM<INF>2.5</INF>) standard, which we propose to conditionally approve because it does not match EPA's current National Ambient Air Quality Standard for PM<INF>2.5</INF>. This action is being taken under the Clean Air Act (CAA).
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