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Manchester, NH 03102
Phone: 603-669-4664
Fax: 603-669-4350
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The Clean Air Act requires each Metropolitan Planning Organization (MPO) to demonstrate conformity of the Transportation Plan and Transportation Improvement Program (TIP) in any area designated as “non-attainment” for National Ambient Air Quality Standards (NAAQS) designated pollutants. This is an eligibility requirement for federal transportation funding. Regional emissions are estimated based on highway and transit usage according to the Transportation Plan and TIP. The projected emissions for the Plan and the TIP must not exceed the emission limits (or budgets) established by the State Implementation Plan (SIP), prepared by the New Hampshire Department of Environmental Services (NHDES).

Air Quality conformity is in response to the Clean Air Act of 1970, when the US Environmental Protection Agency (USEPA) established the NAAQS for various pollutants that adversely affect human health and welfare. These pollutants include Ozone (O3), Sulfur Dioxide (SO2), Nitrogen Dioxide (NO2), Carbon Monoxide (CO), Lead (Pb), and Particulate Matter (PM). The Commission is responsible for determining emissions for ozone and carbon monoxide. All the communities in the Commission Region, except the Towns of Deerfield, New Boston and Weare are in the ozone non-attainment area. Additionally, the City of Manchester is required to demonstrate continued conformity for CO in a 20-year maintenance plan.

Map of Ozone non-attainment area of the state.

FY 2013 - FY 2016 TIP/Air Quality Analysis