NR 440.688(1)(c)3.3. Common clay plants and pumice plants with capacities, as defined in sub. (2), of 9 megagrams per hour (10 tons per hour) or less. NR 440.688(1)(d)1.1. When an existing facility is replaced by a piece of equipment of equal or smaller size, as defined in sub. (2) having the same function as the existing facility, the new facility is exempt from the provisions of subs. (3), (5) and (6) except as provided for in subd. 3. NR 440.688(1)(d)2.2. An owner or operator seeking to comply with this paragraph shall submit the information required in sub. (7) (a). NR 440.688(1)(d)3.3. An owner or operator replacing all existing facilities in a production line with new facilities does not qualify for the exemption described in subd. 1. and shall comply with the provisions of subs. (3), (5) and (6). NR 440.688(1)(e)(e) An affected facility under par. (a) that commences construction, reconstruction, or modification after August 31, 1983 is subject to the requirements of this section. NR 440.688(2)(2) Definitions. As used in this section, terms not defined in this subsection have the meanings given in s. NR 440.02. NR 440.688(2)(a)(a) “Bagging operation” means the mechanical process by which bags are filled with nonmetallic minerals. NR 440.688(2)(b)(b) “Belt conveyor” means a conveying device that transports material from one location to another by means of an endless belt that is carried on a series of idlers and routed around a pulley at each end. NR 440.688(2)(c)(c) “Bucket elevator” means a conveying device of nonmetallic minerals consisting of a head and foot assembly which supports and drives an endless single or double strand chain or belt to which buckets are attached. NR 440.688(2)(e)(e) “Capacity” means the cumulative rated capacity of all initial crushers that are part of the plant. NR 440.688(2)(f)(f) “Capture system” means the equipment (including enclosures, hoods, ducts, fans, dampers, etc.) used to capture and transport particulate matter generated by one or more process operations to a control device. NR 440.688(2)(g)(g) “Control device” means the air pollution control equipment used to reduce particulate matter emissions released to the atmosphere from one or more process operations at a nonmetallic mineral processing plant. NR 440.688(2)(h)(h) “Conveying system” means a device for transporting materials from one piece of equipment or location to another location within a plant. Conveying systems include but are not limited to the following: Feeders, belt conveyors, bucket elevators and pneumatic systems. NR 440.688(2)(i)(i) “Crusher” means a machine used to crush any nonmetallic minerals, and includes, but is not limited to the following types: jaw, gyratory, cone, roll, rod mill, hammermill and impactor. NR 440.688(2)(j)(j) “Enclosed truck or railcar loading station” means that portion of a nonmetallic mineral processing plant were nonmetallic minerals are loaded by an enclosed conveying system into enclosed trucks or railcars. NR 440.688(2)(k)(k) “Fixed plant” means any nonmetallic mineral processing plant at which the processing equipment specified in sub. (1) (a) is attached by a cable, chain, turnbuckle, bolt or other means (except electrical connections) to any anchor, slab, or structure including bedrock. NR 440.688(2)(L)(L) “Fugitive emission” means particulate matter that is not collected by a capture system and is released to the atmosphere at the point of generation. NR 440.688(2)(m)(m) “Grinding mill” means a machine used for the wet or dry fine crushing of any nonmetallic mineral. Grinding mills include, but are not limited to, the following types: hammer, roller, rod, pebble and ball, and fluid energy. The grinding mill includes the air conveying system, air separator, or air classifier, where such systems are used. NR 440.688(2)(n)(n) “Initial crusher” means any crusher into which nonmetallic minerals can be fed without prior crushing in the plant. NR 440.688(2)(o)(o) “Nonmetallic mineral” means any of the following minerals or any mixture of which the majority is any of the following minerals: NR 440.688(2)(o)1.1. Crushed and broken stone, including limestone, dolomite, granite, traprock, sandstone, quartz, quartzite, marl, marble, slate, shale, oil shale, and shell. NR 440.688(2)(o)3.3. Clay including kaolin, fireclay, bentonite, Fuller’s earth, Ball clay, and common clay. NR 440.688(2)(o)6.6. Sodium compounds, including sodium carbonate, sodium chloride, and sodium sulfate.