In New Castle County, no person shall cause or allow the emission of carbon monoxide from any catalytic regeneration of a petroleum cracking system, petroleum fluid coker, or other petroleum process into the atmosphere, unless the carbon monoxide is burned at 1300oF for 0.3 seconds or greater in a direct-flame afterburner or boiler, or is controlled by an equivalent technique.
7 Del. Admin. Code § 1111-2.0