(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:
(A) for sources that are subject to Chapter 101, Subchapter
H, Division 3 of this title, a deduction in allowances equal to the
increase in NOX emissions at the non-ESAD
unit is made as specified in §101.354 of this title (relating
to Allowance Deductions); or
(B) for sources that are not subject to Chapter 101,
Subchapter H, Division 3 of this title, emission credits equal to
the increase in NOX emissions at the
non-ESAD unit are obtained and used in accordance with §117.9800
of this title (relating to Use of Emission Credits for Compliance).
(g) A source that met the definition of major source
on December 31, 2000, is always classified as a major source for purposes
of this chapter. A source that did not meet the definition of major
source (i.e., was a minor source, or did not yet exist) on December
31, 2000, but at any time after December 31, 2000, becomes a major
source, is from that time forward always classified as a major source
for purposes of this chapter.
(h) The availability under subsection (c)(6) of this
section of an emission specification for units with an annual capacity
factor of 0.0383 or less is based on the unit's status on December
31, 2000. Reduced operation after December 31, 2000, cannot be used
to qualify for a more lenient emission specification under subsection
(c)(6) of this section than would otherwise apply to the unit.
(i) No person shall allow the discharge into the atmosphere
from any unit subject to NOX emission
specifications in subsection (c) of this section, emissions in excess
of the following, except as provided in §117.2025 of this title
(relating to Alternative Case Specific Specifications):
(1) carbon monoxide (CO), 400 ppmv at 3.0% O2 , dry basis (or alternatively, 3.0 g/hp-hr
for stationary internal combustion engines):
(A) on a rolling 24-hour averaging period, for units
equipped with CEMS or PEMS for CO; and
(B) on a one-hour average, for units not equipped with
CEMS or PEMS for CO; and
(2) for units that inject urea or ammonia into the
exhaust stream for NOX control, ammonia
emissions of 10 ppmv at 3.0% O2 , dry,
for boilers and process heaters; 15% O2 ,
dry, for stationary gas turbines (including duct burners used in turbine
exhaust ducts), gas-fired lean-burn engines, and diesel engines; and
3.0% O2 , dry, for all other units, based
on:
(A) a block one-hour averaging period for units not
equipped with a CEMS or PEMS for ammonia; or
(B) a rolling 24-hour averaging period for units equipped
with CEMS or PEMS for ammonia.
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