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Air Resource Specialists, Inc. (ARS) is contracted by the National Park Service Air Resources Division to provide documentation for the Gaseous Pollutant Monitoring Program (GPMP) via this website. This website and the information it contains are provided as a public service by ARS. This system is monitored to ensure proper operation, to verify the functioning of applicable security features, and for comparable purposes. Anyone using this system expressly consents to such monitoring. Unauthorized attempts to modify any information stored on this system, to defeat or circumvent security features, or to utilize this system for other than its intended purposes are prohibited and may result in criminal prosecution.