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Current Status of EPA Verification Program for EPA Protocol Gases
Citation:
Wright, B., T. Bui, L. Gameson, F. Guenther, T. Johnson, M. Mustafa, M. Papp, S. Ricks, J. Schakenbach, L. Sena, AND A. Teitz. Current Status of EPA Verification Program for EPA Protocol Gases. 2015 Annual Conference and Exhibition forAir and Waste Management Association, Raleigh, NC, June 22, 2015.
Impact/Purpose:
The purpose of the presentation is to dissemenate the results of the Protocol Gas Verification Program (PGVP) and more general information about EPA Protocol Gases to the environmental community.
Description:
Accurate compressed gas calibration standards are needed to calibrate continuous emission monitors (CEMs) and ambient air quality monitors that are being used for regulatory purposes. US Environmental Protection Agency (EPA) established its traceability protocol to ensure that commercially-prepared standards are traceable to the National Institute of Standards and Technology (NIST). The protocol is an analytical procedure that specialty gas producers use to assay the standards with NIST reference standards and to estimate the uncertainty of the certified concentrations. EPA does not have direct oversight of the production of the standards. In 2010, EPA established a Protocol Gas Verification Program (PGVP) to determine that accuracy of a representative sample of the standards and to disseminate the results of the verifications to end users of the standards. The verifications are performed by laboratories at NIST and EPA Regions 2 and 7. This presentation summarizes the results of the verifications to date.