Ambient Air Protocol Gas Verification Program

This page contains documents related to EPA's Ambient Air Protocol Gas Verification Program.  The Ambient Air Protocol Gas Verification Program is a service provided by the EPA to help State and local monitoring agencies judge the quality of the calibration gasses used in their networks.

• Ambient Air Protocol Gas Verification Program Chain of Custody Form (xls)
• EPA Protocol Gas Stability Requirements Memo (pdf) (298.76 KB, February 2022)

• Chain of Custody Transmittal Memo for Protocol Gas.pdf (pdf) (514.34 KB, February 2021)
• 2024 Ambient Air Protocol Gas Verification Program Assay Dates and Open House (pdf) (135.02 KB, January 2024)
• Quality Assurance Project Plan for the Ambient Air Protocol Gas Verification Program (pdf) (863.65 KB, March 2010)
• Guidance on Shipping Ambient Air Protocol Gas Cylinders by Ground with UPS (pdf) (78.07 KB, March 2011)
• Ambient Air Protocol Gas Verification Program Annual Report for Calendar Year 2023 (pdf) (669.61 KB)
• Ambient Air Protocol Gas Verification Program Annual Report for Calendar Year 2022 (pdf) (6.24 MB)
• Ambient Air Protocol Gas Verification Program Annual Report for Calendar Year 2021 (pdf) (880.23 KB)
• Ambient Air Protocol Gas Verification Program Annual Report for Calendar Year 2020 (pdf) (569.23 KB)
• Ambient Air Protocol Gas Verification Program Annual Report for Calendar Year 2019 (pdf) (789.49 KB)
• Ambient Air Protocol Gas Verification Program Annual Report for Calendar Year 2018 (pdf) (1.1 MB, January 2020)
• Ambient Air Protocol Gas Verification Program Annual Report for Calendar Year 2015 (pdf) (3.08 MB, April 2016)
• Ambient Air Protocol Gas Verification Program Annual Report for Calendar Year 2014 (pdf) (2.5 MB, May 2015)
• Ambient Air Protocol Gas Verification Program Annual Report for Calendar Year 2013 (pdf) (2.36 MB, May 2014)
• Ambient Air Protocol Gas Verification Program Annual Report for Calendar Year 2012 (pdf) (2.87 MB, May 2013)
• Ambient Air Protocol Gas Verification Program Annual Report for Calendar Year 2011 (pdf) (1.71 MB, April 2012)
• Ambient Air Protocol Gas Verification Program Annual Report for Calendar Year 2010 (pdf) (1.17 MB, March 2011)
• Protocol Gas Verification Program Implementation Plan (pdf) (115.05 KB, April 2010)
• Findings from the Technical Systems Audit of Ambient Air Protocol Gas Verification Program, Regional Analytical Verification Laboratory (RAVL), EPA Region 2 Laboratory (Edison, NJ) (pdf) (22.35 KB, May 2010)