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Update on Evaluation and Validation of Continuous Formaldehyde Measurements
Citation:
Whitehill, A. Update on Evaluation and Validation of Continuous Formaldehyde Measurements. PAMS Monthly Workgroup Meeting, NA, November 20, 2019.
Impact/Purpose:
The 2015 Ozone NAAQS update allows states to implement continuous formaldehyde monitors in lieu of EPA Compendium Method TO-11A to fulfill the requirements of the Photochemical Assessment Monitoring Stations (PAMS) network. This option has the ability to significantly improve data quality and data coverage (1 hour versus 8 hour data), which can in turn improve model constraints on ozone production chemistry. The ease of use of these systems will significantly reduce the regulatory burden placed on states to fulfill the requirements of the PAMS program. However, these new methods need additional testing to ensure the precision, accuracy, and feasibility for the PAMS network.
Description:
This product is an update on work done in ORD to evaluate continuous formaldehyde monitors for potential use in the PAMS network. It focuses on quality assurance and calibration issues, as well as instrument collocation data. It will be presented to regional, state, and local stakeholders during a PAMS workgroup meeting on November 20, 2019.