The employer shall equip and operate existing coke oven batteries with all of the following engineering controls to control coke oven emissions during coking operations;
A pressure control system on each battery to obtain uniform collector main pressure;
Ready access to door repair facilities capable of prompt and efficient repair of doors, door sealing edges and all door parts;
An adequate number of spare doors available for replacement purposes;
Chuck door gaskets to control chuck door emissions until such door is repaired, or replaced; and