The terms used in this subpart shall have the meanings set forth in this section as follows:

Acid rain program means a multi-state SO2 and NOX air pollution control and emission reduction program established by the Administrator under title IV of the Clean Air Act and parts 72 through 78 of this chapter.

Administrator means the Administrator of the United States Environmental Protection Agency or the Director of the Clean Air Markets Division (or its successor determined by the Administrator) of the United States Environmental Protection Agency, the Administrator's duly authorized representative under this subpart.

Allocate or allocation means, with regard to Texas SO2 Trading Program allowances, the determination by the Administrator, State, or permitting authority, in accordance with this subpart or any SIP revision submitted by the State approved by the Administrator, of the amount of such Texas SO2 Trading Program allowances to be initially credited, at no cost to the recipient, to a Texas SO2 Trading Program unit.

Allowance management system means the system by which the Administrator records allocations, transfers, and deductions of Texas SO2 Trading Program allowances under the Texas SO2 Trading Program. Such allowances are allocated, recorded, held, transferred, or deducted only as whole allowances.

Allowance management system account means an account in the Allowance Management System established by the Administrator for purposes of recording the allocation, holding, transfer, or deduction of Texas SO2 Trading Program allowances.

Allowance transfer deadline means, for a control period in a given year, midnight of March 1 (if it is a business day), or midnight of the first business day thereafter (if March 1 is not a business day), immediately after such control period and is the deadline by which a Texas SO2 Trading Program allowance transfer must be submitted for recordation in a Texas SO2 Trading Program source's compliance account in order to be available for use in complying with the source's Texas SO2 Trading Program emissions limitation for such control period in accordance with §§97.906 and 97.924.

Alternate designated representative means, for a Texas SO2 Trading Program source and each Texas SO2 Trading Program unit at the source, the natural person who is authorized by the owners and operators of the source and all such units at the source, in accordance with this subpart, to act on behalf of the designated representative in matters pertaining to the Texas SO2 Trading Program. If the Texas SO2 Trading Program source is also subject to the Acid Rain Program or CSAPR NOX Ozone Season Group 2 Trading Program, then this natural person shall be the same natural person as the alternate designated representative as defined in the respective program.

Authorized account representative means, for a general account, the natural person who is authorized, in accordance with this subpart, to transfer and otherwise dispose of Texas SO2 trading Program allowances held in the general account and, for a Texas SO2 Trading Program source's compliance account, the designated representative of the source.

Automated data acquisition and handling system or DAHS means the component of the continuous emission monitoring system, or other emissions monitoring system approved for use under this subpart, designed to interpret and convert individual output signals from pollutant concentration monitors, flow monitors, diluent gas monitors, and other component parts of the monitoring system to produce a continuous record of the measured parameters in the measurement units required by this subpart.

Business day means a day that does not fall on a weekend or a federal holiday.

Clean Air Act means the Clean Air Act, 42 U.S.C. 7401, et seq.

Coal means “coal” as defined in §72.2 of this chapter.

Commence commercial operation means, with regard to a Texas SO2 Trading Program unit, to have begun to produce steam, gas, or other heated medium used to generate electricity for sale or use, including test generation.

Common stack means a single flue through which emissions from 2 or more units are exhausted.

Compliance account means an Allowance Management System account, established by the Administrator for a Texas SO2 Trading Program source under this subpart, in which any Texas SO2 Trading Program allowance allocations to the Texas SO2 Trading Program units at the source are recorded and in which are held any Texas SO2 Trading Program allowances available for use for a control period in a given year in complying with the source's Texas SO2 Trading Program emissions limitation in accordance with §§97.906 and 97.924.

Continuous emission monitoring system or CEMS means the equipment required under this subpart to sample, analyze, measure, and provide, by means of readings recorded at least once every 15 minutes and using an automated data acquisition and handling system (DAHS), a permanent record of SO2 emissions, stack gas volumetric flow rate, stack gas moisture content, and O2 or CO2 concentration (as applicable), in a manner consistent with part 75 of this chapter and §§97.930 through 97.935. The following systems are the principal types of continuous emission monitoring systems:

(1) A flow monitoring system, consisting of a stack flow rate monitor and an automated data acquisition and handling system and providing a permanent, continuous record of stack gas volumetric flow rate, in standard cubic feet per hour (scfh);

(2) A SO2 monitoring system, consisting of a SO2 pollutant concentration monitor and an automated data acquisition and handling system and providing a permanent, continuous record of SO2 emissions, in parts per million (ppm);

(3) A moisture monitoring system, as defined in §75.11(b)(2) of this chapter and providing a permanent, continuous record of the stack gas moisture content, in percent H2O;

(4) A CO2 monitoring system, consisting of a CO2 pollutant concentration monitor (or an O2 monitor plus suitable mathematical equations from which the CO2 concentration is derived) and an automated data acquisition and handling system and providing a permanent, continuous record of CO2 emissions, in percent CO2; and

(5) An O2 monitoring system, consisting of an O2 concentration monitor and an automated data acquisition and handling system and providing a permanent, continuous record of O2, in percent O2.

Control period means the period starting January 1 of a calendar year, except as provided in §97.906(c)(3), and ending on December 31 of the same year, inclusive.

CSAPR NOX Ozone Season Group 2 Trading Program means a multi-state NOX air pollution control and emission reduction program established in accordance with subpart EEEEE of this part and §52.38(b)(1), (b)(2)(i) and (iii), (b)(6) through (11), and (b)(13) of this chapter (including such a program that is revised in a SIP revision approved by the Administrator under §52.38(b)(7) or (8) of this chapter or that is established in a SIP revision approved by the Administrator under §52.38(b)(6) or (9) of this chapter), as a means of mitigating interstate transport of ozone and NOX.

Designated representative means, for a Texas SO2 Trading Program source and each Texas SO2 Trading Program unit at the source, the natural person who is authorized by the owners and operators of the source and all such units at the source, in accordance with this subpart, to represent and legally bind each owner and operator in matters pertaining to the Texas SO2 Trading Program. If the Texas SO2 Trading Program source is also subject to the Acid Rain Program or CSAPR NOX Ozone Season Group 2 Trading Program, then this natural person shall be the same natural person as the designated representative as defined in the respective program.

Emissions means air pollutants exhausted from a unit or source into the atmosphere, as measured, recorded, and reported to the Administrator by the designated representative, and as modified by the Administrator:

(1) In accordance with this subpart; and

(2) With regard to a period before the unit or source is required to measure, record, and report such air pollutants in accordance with this subpart, in accordance with part 75 of this chapter.

Excess emissions means any ton of emissions from the Texas SO2 Trading Program units at a Texas SO2 Trading Program source during a control period in a given year that exceeds the Texas SO2 Trading Program emissions limitation for the source for such control period.

Fossil fuel means natural gas, petroleum, coal, or any form of solid, liquid, or gaseous fuel derived from such material.

Fossil-fuel-fired means, with regard to a unit, combusting any amount of fossil fuel in 2005 or any calendar year thereafter.

General account means an Allowance Management System account, established under this subpart, which is not a compliance account.

Generator means a device that produces electricity.

Heat input means, for a unit for a specified period of unit operating time, the product (in mmBtu) of the gross calorific value of the fuel (in mmBtu/lb) fed into the unit multiplied by the fuel feed rate (in lb of fuel/time) and unit operating time, as measured, recorded, and reported to the Administrator by the designated representative and as modified by the Administrator in accordance with this subpart and excluding the heat derived from preheated combustion air, recirculated flue gases, or exhaust.

Heat input rate means, for a unit, the quotient (in mmBtu/hr) of the amount of heat input for a specified period of unit operating time (in mmBtu) divided by unit operating time (in hr) or, for a unit and a specific fuel, the amount of heat input attributed to the fuel (in mmBtu) divided by the unit operating time (in hr) during which the unit combusts the fuel.

Indian country means “Indian country” as defined in 18 U.S.C. 1151.

Life-of-the-unit, firm power contractual arrangement means a unit participation power sales agreement under which a utility or industrial customer reserves, or is entitled to receive, a specified amount or percentage of nameplate capacity and associated energy generated by any specified unit and pays its proportional amount of such unit's total costs, pursuant to a contract:

(1) For the life of the unit;

(2) For a cumulative term of no less than 30 years, including contracts that permit an election for early termination; or

(3) For a period no less than 25 years or 70 percent of the economic useful life of the unit determined as of the time the unit is built, with option rights to purchase or release some portion of the nameplate capacity and associated energy generated by the unit at the end of the period.

Monitoring system means any monitoring system that meets the requirements of this subpart, including a continuous emission monitoring system, an alternative monitoring system, or an excepted monitoring system under part 75 of this chapter.

Nameplate capacity means, starting from the initial installation of a generator, the maximum electrical generating output (in MWe, rounded to the nearest tenth) that the generator is capable of producing on a steady state basis and during continuous operation (when not restricted by seasonal or other deratings) as of such installation as specified by the manufacturer of the generator or, starting from the completion of any subsequent physical change in the generator resulting in an increase in the maximum electrical generating output that the generator is capable of producing on a steady state basis and during continuous operation (when not restricted by seasonal or other deratings), such increased maximum amount (in MWe, rounded to the nearest tenth) as of such completion as specified by the person conducting the physical change.

Natural gas means “natural gas” as defined in §72.2 of this chapter.

Natural person means a human being, as opposed to a legal person, which may be a private (i.e., business entity or non-governmental organization) or public (i.e., government) organization.

Operate or operation means, with regard to a unit, to combust fuel.

Operator means, for a Texas SO2 Trading Program source or a Texas SO2 Trading Program unit at a source respectively, any person who operates, controls, or supervises a Texas SO2 Trading Program unit at the source or the Texas SO2 Trading Program unit and shall include, but not be limited to, any holding company, utility system, or plant manager of such source or unit.

Owner means, for a Texas SO2 Trading Program source or a Texas SO2 Trading Program unit at a source, any of the following persons:

(1) Any holder of any portion of the legal or equitable title in a Texas SO2 Trading Program unit at the source or the Texas SO2 Trading Program unit;

(2) Any holder of a leasehold interest in a Texas SO2 Trading Program unit at the source or the Texas SO2 Trading Program unit, provided that, unless expressly provided for in a leasehold agreement, “owner” shall not include a passive lessor, or a person who has an equitable interest through such lessor, whose rental payments are not based (either directly or indirectly) on the revenues or income from such Texas SO2 Trading Program unit; and

(3) Any purchaser of power from a Texas SO2 Trading Program unit at the source or the Texas SO2 Trading Program unit under a life-of-the-unit, firm power contractual arrangement.

Permanently retired means, with regard to a unit, a unit that is unavailable for service and that the unit's owners and operators do not expect to return to service in the future.

Permitting authority means “permitting authority” as defined in §§70.2 and 71.2 of this chapter.

Receive or receipt of means, when referring to the Administrator, to come into possession of a document, information, or correspondence (whether sent in hard copy or by authorized electronic transmission), as indicated in an official log, or by a notation made on the document, information, or correspondence, by the Administrator in the regular course of business.

Recordation, record, or recorded means, with regard to Texas SO2 Trading Program allowances, the moving of Texas SO2 Trading Program allowances by the Administrator into, out of, or between Allowance Management System accounts, for purposes of allocation, transfer, or deduction.

Reference method means any direct test method of sampling and analyzing for an air pollutant as specified in §75.22 of this chapter.

Replacement, replace, or replaced means, with regard to a unit, the demolishing of a unit, or the permanent retirement and permanent disabling of a unit, and the construction of another unit (the replacement unit) to be used instead of the demolished or retired unit (the replaced unit).

Serial number means, for a Texas SO2 Trading Program allowance, the unique identification number assigned to each Texas SO2 Trading Program allowance by the Administrator.

Source means all buildings, structures, or installations located in one or more contiguous or adjacent properties under common control of the same person or persons. This definition does not change or otherwise affect the definition of “major source”, “stationary source”, or “source” as set forth and implemented in a title V operating permit program or any other program under the Clean Air Act.

State means Texas.

Submit or serve means to send or transmit a document, information, or correspondence to the person specified in accordance with the applicable regulation:

(1) In person;

(2) By United States Postal Service; or

(3) By other means of dispatch or transmission and delivery;

(4) Provided that compliance with any “submission” or “service” deadline shall be determined by the date of dispatch, transmission, or mailing and not the date of receipt.

Texas SO2 Trading Program means an SO2 air pollution control and emission reduction program established in accordance with this subpart and 40 CFR 52.2312 (including such a program that is revised in a SIP revision approved by the Administrator), or established in a SIP revision approved by the Administrator, as a means of addressing the State's obligations with respect to BART, reasonable progress, and interstate visibility transport as those obligations relate to emissions of SO2 from electricity generating units.

Texas SO2 Trading Program allowance means a limited authorization issued and allocated by the Administrator under this subpart, or by a State or permitting authority under a SIP revision approved by the Administrator, to emit one ton of SO2 during a control period of the specified calendar year for which the authorization is allocated or of any calendar year thereafter under the Texas SO2 Trading Program.

Texas SO2 Trading Program allowance deduction or deduct Texas SO2 Trading Program allowances means the permanent withdrawal of Texas SO2 Trading Program allowances by the Administrator from a compliance account (e.g., in order to account for compliance with the Texas SO2 Trading Program emissions limitation).

Texas SO2 Trading Program allowances held or hold Texas SO2 Trading Program allowances means the Texas SO2 Trading Program allowances treated as included in an Allowance Management System account as of a specified point in time because at that time they:

(1) Have been recorded by the Administrator in the account or transferred into the account by a correctly submitted, but not yet recorded, Texas SO2 Trading Program allowance transfer in accordance with this subpart; and

(2) Have not been transferred out of the account by a correctly submitted, but not yet recorded, Texas SO2 Trading Program allowance transfer in accordance with this subpart.

Texas SO2 Trading Program emissions limitation means, for a Texas SO2 Trading Program source, the tonnage of SO2 emissions authorized in a control period by the Texas SO2 Trading Program allowances available for deduction for the source under §97.924(a) for such control period.

Texas SO2 Trading Program source means a source that includes one or more Texas SO2 Trading Program units.

Texas SO2 Trading Program unit means a unit that is subject to the Texas SO2 Trading Program under §97.904.

Unit means a stationary, fossil-fuel-fired boiler, stationary, fossil-fuel-fired combustion turbine, or other stationary, fossil-fuel-fired combustion device. A unit that undergoes a physical change or is moved to a different location or source shall continue to be treated as the same unit. A unit (the replaced unit) that is replaced by another unit (the replacement unit) at the same or a different source shall continue to be treated as the same unit, and the replacement unit shall be treated as a separate unit.

Unit operating day means, with regard to a unit, a calendar day in which the unit combusts any fuel.

Unit operating hour or hour of unit operation means, with regard to a unit, an hour in which the unit combusts any fuel.