(a) For the cokemaking subcategory, the term product means the production of coke plus coke breeze.

(b) The term by-product cokemaking means operations in which coal is heated in the absence of air to produce metallurgical coke (furnace coke and foundry coke), and the recovery of by-products derived from the gases and liquids that are driven from the coal during cokemaking.

(c) The term cokemaking - non-recovery means cokemaking operations for production of metallurgical coke (furnace coke and foundry coke) without recovery of by-products. Does not include co-generation facilities located at non-recovery coke facilities.

(d) The term coke means a processed form of coal that serves as the basic fuel for the smelting of iron ore.

(e) The term merchant coke plant means by-product cokemaking operations that provide more than fifty percent of the coke produced to operations, industries, or processes other than ironmaking blast furnaces associated with steel production.

(f) The term iron and steel coke plant means by-product cokemaking operations other than those at merchant coke plants.

(g) The term coke oven gas wet desulfurization system means those systems that remove sulfur and sulfur compounds from coke oven gas and generate process wastewater.

(h) The term coke breeze means fine coke particles.

(i) The term indirect ammonia recovery system means those systems that recover ammonium hydroxide as a by-product from coke oven gases and waste ammonia liquors.

(j) The term iron and steel means those by-product cokemaking operations other than merchant cokemaking operations.

(k) The term merchant means those by-product cokemaking operations that provide more than fifty percent of the coke produced to operations, industries, or processes other than ironmaking blast furnaces associated with steel production.

(l) The term O&G (as HEM) means total recoverable oil and grease measured as n-hexane extractable material.

(m) The term wet desulfurization system means those systems that remove sulfur compounds from coke oven gases and produce a contaminated process wastewater.