CFR › Title 40 › Part 421 › §421.21440 CFR §421.214Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkAny new source subject to this subpart shall achieve the following new source performance standards:(a)Molybdenum sulfide leachate.(b)Roaster SO2 scrubber.(c)Molybdic oxide leachate.(d)Hydrogen reduction furnace scrubber.(e)Depleted rhenium scrubbing solution.