StacksVerified U.S. regulatory reference

40 CFR §1066.620

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov
Correct for removed water if water removal occurs upstream of a concentration measurement and downstream of a flow meter used to determine mass emissions over a test interval. Perform this correction based on the amount of water at the concentration measurement and on the amount of water at the flow meter.