Primary Lead Smelting: New Source Performance Standards
The promulgated standards of performance for new and modified primary lead smelters limit emissions of particulate matter contained in the gases discharged into the atmosphere from blast furnaces, dross reverberatory furnaces and sintering machine discharge ends to 50 mg/dscm (0.022 gr/dscf). The opacity of these gases is limited to 20 percent.
Emissions of sulfur dioxide contained in the gases discharged into the atmosphere from sintering machines, electric smelting furnaces and converters are limited to 0.065 percent by volume (650 parts per million) averaged over a two hour period. Where a sulfuric acid plant is used to comply with this standard, the opacity of the gases discharged into the atmosphere is limited to 20 percent.
The regulations also require continuous monitoring systems to monitor and record the opacity of emissions discharged Into the atmosphere from any blast, furnace, dross reverberatory furnace, or sintering machine discharge end subject to the standards, and the concentration of sulfur dioxide in the gases discharged into the atmosphere from any sintering machine, electric furnace or converter subject to the standards.
01/15/1976 - Final rule.
10/16/1974 - Proposed rule.