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Air Quality

Air Pollutants - Particulate Matter (PM) - Standards & Requirements

State Implementation Plan (SIP)

The Clean Air Act requires each state to develop a State Implementation Plan (SIP) that outlines the state's strategy for controlling air pollution for each of the National Ambient Air Quality Standards (standard). A SIP is a plan that can include a narrative, models, regulations, programs, and other technical documentation that a state presents as evidence of its efforts to address air pollution and maintain good air quality.

The Clean Air Act requires states to involve the general public and industry through public hearings and opportunities to comment on the development of each state plan. States then submit the initial SIP or SIP revision to the U.S. Environmental Protection Agency (EPA) for approval. Once approved, the SIP is enforceable by the state and EPA.

A nonattainment plan is the specific plan designed to address a particular area in the state that has been designated as nonattainment for a standard. Once nonattainment designations take effect, the state has no more than three years to develop a nonattainment SIP revision outlining how a particular area will attain and maintain the standards by reducing air pollutant emissions in that area.

South Carolina has no nonattainment plans for PM because
there have been no nonattainment areas for the 1997 or 2006 standards.

For more information please contact the Bureau of Air Quality at (803) 898-4123 or by email.