StacksVerified U.S. regulatory reference

40 CFR §139.12

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)The requirements in paragraphs (b) and (c) of this section apply to discharges resulting from boiler blowdown.
  2. (b)The discharge from boiler blowdown must be minimized in port.
  3. (c)Additional standards applicable to discharges from boilers when a vessel is operating in federally-protected waters are contained in § 139.40(d).