(a) This subpart applies to each existing, new, or reconstructed affected source at a clay ceramics manufacturing facility and to each affected source described in paragraphs (f)(1) or (f)(2) of this section.
(b) Each existing, new, or reconstructed periodic kiln, tunnel kiln, and roller kiln is an affected source regardless of design capacity. Each source that meets the description in paragraphs (f)(1) or (f)(2) also is an affected source.
(c) Kilns that are used exclusively for research and development (R&D;) and are not used to manufacture products for commercial sale, except in a de minimis manner, are not subject to the requirements of this subpart.
(d) Kilns that are used exclusively for setting glazes on previously fired products or for refiring are not subject to the requirements of this subpart.
(e) A source is a new affected source if construction of the affected source began after July 22, 2002, and you met the applicability criteria at the time you began construction.
(f) An affected source is reconstructed if you meet the criteria as defined in Sec. 63.2, except as provided in paragraphs (f)(1) and (f)(2) of this section.
(1) It is not technologically and economically feasible for an existing tunnel kiln whose design capacity is less than 9.07 megagrams per hour (Mg/hr) (10 tons per hour (tph)) of fired product but is increased such that it is equal to or greater than 9.07 Mg/hr (10 tph) of fired product to meet the relevant standards (i.e., new source maximum achievable control technology (MACT)) by retrofitting with a dry lime injection fabric filter (DIFF), dry lime scrubber/fabric filter (DLS/FF), or wet scrubber (WS).
(2) It is not technologically and economically feasible for an existing dry limestone adsorber (DLA)-controlled kiln whose design capacity is equal to or greater than 9.07 Mg/hr (10 tph) of fired product to meet the relevant standards by retrofitting with a DIFF, DLS/FF, or WS.
(g) An affected source is existing if it is not new or reconstructed and does not meet the descriptions provided in paragraphs (f)(1) and (f)(2) of this section.