The CEP will comply with all local, state and federal air quality regulations, which are protective of human health and the environment. One such area of regulation is the Clean Air Act (CAA), which requires the United States Environmental Protection Agency (EPA) to set National Ambient Air Quality Standards (NAAQS) for six common air pollutants — called "criteria" pollutants. This is designed to protect the public — including sensitive populations such as children and the elderly — from adverse health effects and to provide public welfare protection, including protection against decreased visibility and damage to animals, crops, vegetation and buildings. To expand the Coolidge plant, SRP must file for and receive approval of an air permit, which ensures the emissions meet air quality regulations. Click here to view a copy of SRP's air quality permit application (23MB). (NOTE: SRP is currently updating this application and will post a new version of the application once available.) As part of the process to obtain a permit for the Coolidge expansion, SRP retained a consultant to conduct ambient air quality modeling to assess the impact of air emissions from the addition of the new units at Coolidge. Based on this review, it was determined that the new units will not cause or contribute significantly to a violation of any NAAQS. The final air quality permit will be a federally enforceable document containing applicable emission limits and standards that Coolidge is responsible for meeting and will contain recordkeeping, monitoring and reporting conditions necessary to demonstrate compliance with all applicable requirements.