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TITLE 30ENVIRONMENTAL QUALITY
PART 1TEXAS COMMISSION ON ENVIRONMENTAL QUALITY
CHAPTER 117CONTROL OF AIR POLLUTION FROM NITROGEN COMPOUNDS
SUBCHAPTER DCOMBUSTION CONTROL AT MINOR SOURCES IN OZONE NONATTAINMENT AREAS
DIVISION 1HOUSTON-GALVESTON-BRAZORIA OZONE NONATTAINMENT AREA MINOR SOURCES
RULE §117.2010Emission Specifications

(a) For sources that are subject to Chapter 101, Subchapter H, Division 3 of this title (relating to Mass Emissions Cap and Trade Program), the nitrogen oxides (NOX ) emission rate values used to determine allocations for Chapter 101, Subchapter H, Division 3 of this title must be the lower of any applicable permit limit in a permit issued before January 2, 2001; any permit issued on or after January 2, 2001, that the owner or operator submitted an application determined to be administratively complete by the executive director before January 2, 2001; any limit in a permit by rule under which construction commenced by January 2, 2001; or the emission specifications in subsection (c) of this section. The averaging time must be as specified in Chapter 101, Subchapter H, Division 3 of this title.

(b) For sources that are not subject to Chapter 101, Subchapter H, Division 3 of this title, NOX emissions are limited to the lower of any applicable permit limit in a permit issued before January 2, 2001; any permit issued on or after January 2, 2001, that the owner or operator submitted an application determined to be administratively complete by the executive director before January 2, 2001; any limit in a permit by rule under which construction commenced by January 2, 2001; or the emission specifications in subsection (c) of this section. The averaging time must be as follows:

  (1) if the unit is operated with a NO X continuous emissions monitoring system (CEMS) or predictive emissions monitoring system (PEMS) under §117.2035(c) of this title (relating to Monitoring and Testing Requirements), either as:

    (A) a rolling 30-day average period, in the units of the applicable standard;

    (B) a block one-hour average, in the units of the applicable standard; or

    (C) a block one-hour average, in pounds per hour, for boilers and process heaters, calculated as the product of the boiler's or process heater's maximum rated capacity and its applicable limit in pounds per million British thermal units (lb/MMBtu); or

  (2) if the unit is not operated with a NO X CEMS or PEMS under §117.2035(c) of this title, a block one-hour average, in the units of the applicable standard.

(c) The following NOX emission specifications must be used in conjunction with subsection (a) of this section to determine allocations for Chapter 101, Subchapter H, Division 3 of this title, or in conjunction with subsection (b) of this section to establish unit-by-unit emission specifications, as appropriate:

  (1) from boilers and process heaters:

    (A) gas-fired, 0.036 lb/MMBtu heat input (or alternatively, 30 parts per million by volume (ppmv) at 3.0% oxygen (O 2), dry basis); and

    (B) liquid-fired, 0.072 lb/MMBtu heat input (or alternatively, 60 ppmv at 3.0% O2, dry basis);

  (2) from stationary, gas-fired, reciprocating internal combustion engines:

    (A) fired on landfill gas, 0.60 gram per horsepower-hour (g/hp-hr); and

    (B) all others, 0.50 g/hp-hr;

  (3) from stationary, dual-fuel, reciprocating internal combustion engines, 5.83 g/hp-hr;

  (4) from stationary, diesel, reciprocating internal combustion engines:

    (A) placed into service before October 1, 2001, that have not been modified, reconstructed, or relocated on or after October 1, 2001, the lower of 11.0 g/hp-hr or the emission rate established by testing, monitoring, manufacturer's guarantee, or manufacturer's other data. For the purposes of this paragraph, the terms "modification" and "reconstruction" have the meanings defined in §116.10 of this title (relating to General Definitions) and 40 Code of Federal Regulations §60.15 (December 16, 1975), respectively, and the term "relocated" means to newly install at an account, as defined in §101.1 of this title (relating to Definitions), a used engine from anywhere outside that account; and

    (B) for engines not subject to subparagraph (A) of this paragraph:

      (i) with a horsepower (hp) rating of 50 hp or greater, but less than 100 hp, that are installed, modified, reconstructed, or relocated:

        (I) on or after October 1, 2001, but before October 1, 2003, 6.9 g/hp-hr;

        (II) on or after October 1, 2003, but before October 1, 2007, 5.0 g/hp-hr; and

        (III) on or after October 1, 2007, 3.3 g/hp-hr;

      (ii) with a horsepower rating of 100 hp or greater, but less than 175 hp, that are installed, modified, reconstructed, or relocated:

        (I) on or after October 1, 2001, but before October 1, 2002, 6.9 g/hp-hr;

        (II) on or after October 1, 2002, but before October 1, 2006, 4.5 g/hp-hr; and

        (III) on or after October 1, 2006, 2.8 g/hp-hr;

      (iii) with a horsepower rating of 175 hp or greater, but less than 300 hp, that are installed, modified, reconstructed, or relocated:

        (I) on or after October 1, 2001, but before October 1, 2002, 6.9 g/hp-hr;

        (II) on or after October 1, 2002, but before October 1, 2005, 4.5 g/hp-hr; and

        (III) on or after October 1, 2005, 2.8 g/hp-hr;

      (iv) with a horsepower rating of 300 hp or greater, but less than 600 hp, that are installed, modified, reconstructed, or relocated:

        (I) on or after October 1, 2001, but before October 1, 2005, 4.5 g/hp-hr; and

        (II) on or after October 1, 2005, 2.8 g/hp-hr;

      (v) with a horsepower rating of 600 hp or greater, but less than or equal to 750 hp, that are installed, modified, reconstructed, or relocated:

        (I) on or after October 1, 2001, but before October 1, 2005, 4.5 g/hp-hr; and

        (II) on or after October 1, 2005, 2.8 g/hp-hr; and

      (vi) with a horsepower rating of 750 hp or greater that are installed, modified, reconstructed, or relocated:

        (I) on or after October 1, 2001, but before October 1, 2005, 6.9 g/hp-hr; and

        (II) on or after October 1, 2005, 4.5 g/hp-hr;

  (5) from stationary gas turbines (including duct burners), 0.15 lb/MMBtu; and

  (6) as an alternative to the emission specifications in paragraphs (1) - (5) of this subsection for units with an annual capacity factor of 0.0383 or less, 0.060 lb/MMBtu heat input. For units placed into service on or before January 1, 1997, the 1997 - 1999 average annual capacity factor must be used to determine whether the unit is eligible for the emission specification of this paragraph. For units placed into service after January 1, 1997, the annual capacity factor must be calculated from two consecutive years in the first five years of operation to determine whether the unit is eligible for the emission specification of this paragraph, using the same two consecutive years chosen for the activity level baseline. The five-year period begins at the end of the adjustment period as defined in §101.350 of this title (relating to Definitions).

(d) The maximum rated capacity used to determine the applicability of the emission specifications in subsection (c) of this section must be:

  (1) the greater of the following:

    (A) the maximum rated capacity as of December 31, 2000; or

    (B) the maximum rated capacity after December 31, 2000; or

  (2) alternatively, the maximum rated capacity authorized by a permit issued under Chapter 116 of this title (relating to Control of Air Pollution by Permits for New Construction or Modification) on or after January 2, 2001, for which the owner or operator submitted an application determined to be administratively complete by the executive director before January 2, 2001, provided that the maximum rated capacity authorized by the permit issued on or after January 2, 2001, is no less than the maximum rated capacity represented in the permit application as of January 2, 2001.

(e) A unit's classification is determined by the most specific classification applicable to the unit as of December 31, 2000. For example, a unit that is classified as a stationary gas-fired engine as of December 31, 2000, but subsequently is authorized to operate as a dual-fuel engine, is classified as a stationary gas-fired engine for the purposes of this chapter.

(f) Changes after December 31, 2000, to a unit subject to an emission specification in subsection (c) of this section (ESAD unit) that result in increased NOX emissions from a unit not subject to an emission specification in subsection (c) of this section (non-ESAD unit), such as redirecting one or more fuel or waste streams containing chemical-bound nitrogen to an incinerator or a flare, is only allowed if:

  (1) the increase in NOX emissions at the non-ESAD unit is determined using a CEMS or PEMS that meets the requirements of §117.2035(c) of this title, or through stack testing that meets the requirements of §117.2035(e) of this title; and

  (2) either of the following conditions is met:

Cont'd...

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