Section 326IAC2-1.1-1. Definitions

   For purposes of this article, the definition given for a term in this rule shall control in any conflict between 326 IAC 1-2 and this article. In addition to the definitions provided in IC 13-11-2 and 326 IAC 1-2, the following definitions apply throughout this article unless expressly stated otherwise or unless the context clearly implies otherwise:

(1) "Authorized individual" means an individual responsible for the overall operation of one (1) or more manufacturing, production, or operating plants or a duly authorized representative of the person. For any public agency, the term means either a ranking elected official, the chief executive officer, or a designated representative of the person having responsibility for the overall operations of a principal geographic unit of the agency.

(2) "Direct PM_2.5" means solid particles emitted directly from an air emissions source or activity, or gaseous emissions or liquid droplets from an air emissions source or activity that condense to form PM_2.5 at ambient temperatures. Direct PM_2.5 emissions include elemental carbon, directly emitted organic carbon, directly emitted sulfate, directly emitted nitrate, and other inorganic particles, including, but not limited to, crustal material, metals, and sea salt.

(3) "General permit" means a permit that is applicable to a class or category of sources or modifications thereto, whether or not under common ownership or control, that are subject to similar applicable requirements.

(4) "Minor source" means any source or facility to which 326 IAC 2-5.1 applies, but to which neither 326 IAC 2-2 nor 326 IAC 2-3 applies.

(5) "New emissions unit" means an emissions unit for which construction commences on or after December 25, 1998.

(6) "New portable source" means any portable operation that:

(A) has not commenced construction as of December 25, 1998; or

(B) does not have a valid operating permit as of December 25, 1998.

(7) "New source" means a source for which construction commences on or after December 25, 1998, that will be constructed:

(A) on undeveloped land; or

(B) at a location for which a valid permit has not been issued.

(8) "Opacity" means the degree to which emissions reduce the transmission of light and obscure the view of an object in the background.

(9) "Operation" means:

(A) a single piece of equipment or multiple pieces of like equipment;

(B) a process or multiple like processes;

(C) a plant or multiple like plants; or

(D) any combination of clauses (A) through (C);

that performs similar functions or when operated together produces similar products. The term includes equipment or technology modifications, process or procedure modifications, reformulation or redesign of products, substitution of raw materials, and improvements in housekeeping, maintenance, training, or inventory control. The term does not include recycling, energy recovery, treatment, disposal, or the use of any add-on air pollution control technology.

(10) "PM₁₀" has the meaning set forth at 326 IAC 1-2-52.4 and, for purposes of this article, includes gaseous emissions or liquid droplets from an air emissions source or activity that condense to form PM₁₀ at ambient temperatures.

(11) "Portable source" means any operation, process, or emissions unit, other than mobile sources, that emits or has the potential to emit any regulated air pollutant and is specifically designed to be and capable of being moved from one (1) location or site to another location or site and is moved to other locations or sites at least one (1) time during the term of the permit. Indicia of transportability include, but are not limited to:

(A) wheels;

(B) skids;

(C) trailer; or

(D) platform.

(12) "Potential to emit" means the maximum capacity of a stationary source or emissions unit to emit any air pollutant under its physical and operational design. Any physical or operational limitation on the capacity of a source to emit an air pollutant, including air pollution control equipment and restrictions on hours of operation or type or amount of material combusted, stored, or processed, shall be treated as part of its design if the limitation is enforceable by the U.S. EPA, the department, or the appropriate local air pollution control agency. The term does not alter or affect the use of potential to emit for any other purpose under the CAA, (or "capacity factor" as used in Title IV of the CAA) or the regulations promulgated thereunder.

(13) "Process" means any combination of equipment that is physically connected and operated in sequence that, when the process is operated, could operate independently to:

(A) generate energy;

(B) refine or produce materials or parts; or

(C) produce a finished product.

(Air Pollution Control Division; 326 IAC 2-1.1-1; filed Nov 25, 1998, 12:13 p.m.: 22 IR 980; errata filed May 12, 1999, 11:23 a.m.: 22 IR 3105; filed Oct 1, 2010, 3:48 p.m.: 20101027-IR-326070372FRA; filed Feb 6, 2012, 2:54 p.m.: 20120307-IR-326090493FRA; filed Jun 11, 2012, 3:15 p.m.: 20120711-IR-326110251FRA)