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Quality Assurance & Auditing Air Quality NPAP Audits

The U.S. EPA operates a National Performance Audit Program (NPAP) to independently assess monitoring operations of State and Local Air Monitoring System (SLAMS) networks and Tribal networks. The monitoring stations in these networks are used by EPA to determine attainment and non-attainment of the National Ambient Air Quality Standards (NAAQS).

Air Resource Specialists is EPA-certified to perform NPAP audits (also referred to as Through the Probe audits).