View the full reports from 2010 and 2013 of the PGVP audits, which tested the EPA Protocol gases that are used to calibrate continuous emission monitoring systems (CEMS), and the instruments used in EPA reference methods.
View the Protocol Gas Verification Program for related information.
You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more.- 2010 EPA Protocol Gas Audit (PDF)(58 pp, 603 K)
- 2013 EPA Protocol Gas Audit (PDF)(59 pp, 3 MB)