§63.1653. Opacity standards.
40 C.F.R. § 63.1653
No owner or operator shall cause emissions exiting from a shop due solely to operations of any affected submerged arc furnace, to exceed 20 percent opacity for more than one 6-minute period during any performance test, with the following exceptions:
Visible particulate emissions from a shop due solely to operation of a semi-closed submerged arc furnace, may exceed 20 percent opacity, measured as a 6-minute average, one time during any performance test, so long as the emissions never exceed 60 percent opacity, measured as a 6-minute average.
Blowing taps, poling and oxygen lancing of the tap hole; burndowns associated with electrode measurements; and maintenance activities associated with submerged arc furnaces and casting operations are exempt from the opacity standards specified in this section.
Notes, amendments, and revision history
Source
Source: 64 FR 27458, May 20, 1999, unless otherwise noted.
Authority
Authority: 42 U.S.C. 7401 et seq.
Source
Source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.