StacksVerified U.S. regulatory reference

40 CFR §139.20

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)The requirements in paragraph (b) of this section apply to discharges from the washing of gas turbine components.
  2. (b)The discharge of untreated gas turbine washwater is prohibited unless infeasible.