Current through Register Vol. 48, No. 12, March 22, 2024
a) An owner or operator of a lead emission
unit subject to the total enclosure requirement of Section 226.155 must measure
the total area of all natural draft openings and the total surface area of the
total enclosure.
b) An owner or
operator of a lead emission unit subject to the total enclosure requirement of
Section 226.155 must measure the facial velocity of air flowing through all
natural draft openings using the following equation while any lead emission
unit applicable to the operation listed in Section 226.155(a) is operating.
Values for Qo and QI must be
obtained by means of testing pursuant to subsection (b)(1) or monitoring
pursuant to subsection (b)(2):
Image
Where:
Q0
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=
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the sum of volumetric flow from all gas streams exiting
the total enclosure through the control device.
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QI
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=
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the sum of the volumetric flow from all gas streams
into the total enclosure through a forced makeup air duct; zero if there is no
forced makeup air into the total enclosure.
|
An
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=
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total area of all natural draft openings in the total
enclosure.
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1) An owner or
operator of a lead emission unit subject to the total enclosure requirement of
Section 226.155 must conduct testing to determine the values for
Qo and QI at the same time as any
emissions testing is conducted pursuant to Section 226.175; or
2) An owner or operator of a lead emission
unit subject to the total enclosure requirement of Section 226.155 must
install, maintain, and operate a flow monitor at the outlet of each control
device required by Section 226.140 to measure the volumetric flow from all gas
streams exiting the total enclosure through the control device (or the final
control device emitting to the atmosphere if the source has more than one
control device in series). This volumetric flow data must be monitored and
automatically recorded every minute.
c) As an alternative to compliance with the
requirements of subsection (b), an owner or operator of a lead emission unit
subject to the total enclosure requirement of Section 226.155 must install,
operate, and maintain instrumentation to monitor the pressure differential
between the interior and exterior of the enclosure, measured in inches of
water, to demonstrate compliance with the differential pressure requirements in
Section 226.155(c). This instrumentation must be located and designed to
operate in accordance with all of the requirements of subsections (c)(1)
through (6):
1) An owner or operator of a
total enclosure that has a total ground surface area of 10,000 square feet or
more must install and maintain a minimum of one building digital differential
pressure monitoring system at each of the following 3 walls in each total
enclosure:
A) The leeward wall.
B) The windward wall.
C) An exterior wall that connects the leeward
and windward wall at a location defined by the intersection of a perpendicular
line between a point on the connecting wall and a point on its furthest
opposite exterior wall, and intersecting within plus or minus 10 meters of the
midpoint of a straight line between the 2 other monitors specified. The
midpoint monitor must not be located on the same wall as either of the other 2
monitors.
2) An owner or
operator of a total enclosure that has a total ground surface area of less than
10,000 square feet must install and maintain a minimum of one building digital
differential pressure monitoring system at the leeward wall of each total
enclosure.
3) Each digital
differential pressure monitoring system must be certified by the manufacturer
to be capable of measuring and displaying negative pressure in the range of
0.001 to 0.11 inches of water (0.002 to 0.2 mm Hg) with a minimum accuracy of
plus or minus 0.001 inches of water (0.002 mm Hg).
4) Each digital differential pressure
monitoring system must be equipped with a continuous recorder.
5) Each digital differential pressure
monitoring system must be calibrated in accordance with manufacturer's
specifications at least once every 12 calendar months or more frequently if
recommended by the manufacturer.
6)
Each digital differential pressure monitoring system must be equipped with a
backup, uninterruptible power supply to ensure continuous operation of the
monitoring system during a power outage.
d) An owner or operator of a lead emission
unit subject to the total enclosure requirement of Section 226.155 must develop
and maintain a Continuous Parametric Monitoring Plan containing the information
required in subsection (d)(1), (2), or (3). The CPMP must be submitted for
review and approval to the Section Manager by the compliance date specified in
Section 226.130 and within 30 days after any changes are made to the plan. The
CPMP must be amended by the owner or operator of a lead emission unit subject
to this Part as necessary to ensure that it is kept current. The owner or
operator of a lead emission unit subject to this Part must conduct monitoring
in accordance with the CPMP at all times.
1)
If electing to comply with the facial velocity requirement in Section
226.155(c) using the total enclosure measurement method in subsection (b)(1),
the CPMP must contain the information required by subsections (d)(1)(A) through
(D).
A) The CPMP must identify the operating
parameters to be monitored on an ongoing basis to ensure that the facial
velocity measured during the most recent compliance test is maintained, explain
why those parameters are appropriate for demonstrating ongoing compliance, and
identify the specific monitoring procedures for each parameter.
B) The CPMP must specify limits or ranges of
values of the operating parameters listed pursuant to subsection (d)(1)(A) that
demonstrate compliance with the facial velocity requirements in Section
226.155(c). These limits or ranges must represent the conditions indicative of
proper operation and maintenance of the facial velocity through all natural
draft openings during operation of lead emission units in each total
enclosure.
C) The CPMP must specify
data to be recorded to demonstrate compliance with the facial velocity
requirements in Section 226.155(c), as well as the recording frequency and
methodology.
D) The CPMP must
specify the information to be reported to the Agency to demonstrate compliance
with the facial velocity requirements in Section 226.155(c). This information
must include, but is not limited to, all information to be submitted as part of
the semiannual reports required by Section 226.185(n), as well as the reporting
frequency.
2) If
electing to comply with the facial velocity requirement in Section 226.155(c)
using the total enclosure monitoring method in subsection (b)(2), the CPMP must
contain the information required by subsections (d)(2)(A) through (C).
A) The CPMP must specify limits or ranges of
values of the sum of volumetric flow from all gas streams exiting the total
enclosure through the control device and the sum of the volumetric flow from
all gas streams into the total enclosure through a forced makeup air duct.
These limits or ranges must represent the conditions indicative of proper
operation and maintenance of the facial velocity through all natural draft
openings during operation of lead emission units in each total
enclosure.
B) The CPMP must specify
data to be recorded to demonstrate compliance with the facial velocity
requirements in Section 226.155(c), as well as the recording frequency and
methodology.
C) The CPMP must
specify the information to be reported to the Agency to demonstrate compliance
with the facial velocity requirements in Section 226.155(c). This information
must include, but is not limited to, all information to be submitted as part of
the semiannual reports required by Section 226.185(n), as well as the reporting
frequency.
3) If
electing to comply with the average differential pressure requirement in
Section 226.155(c) using the total enclosure measurement method in subsection
(c), the CPMP must contain the information required by subsections (d)(3)(A)
through (C).
A) The CPMP must identify the
locations and design of each differential pressure monitoring instrumentation
demonstrating compliance with the requirements of subsection (c) to ensure that
the average differential pressure is measured properly, explain why those
locations are appropriate for demonstrating ongoing compliance, and provide a
schedule for instrumentation calibration.
B) The CPMP must specify data to be recorded
to demonstrate compliance with the average differential pressure requirements
in Section 226.155(c), as well as the recording frequency and
methodology.
C) The CPMP must
specify the information to be reported to the Agency to demonstrate compliance
with the average differential pressure requirements in Section 226.155(c). This
information must include, but is not limited to, all information to be
submitted as part of the semiannual reports required by Section 226.185(n), as
well as the reporting frequency.
e) The owner or operator of a lead emission
unit subject to this Part electing to change the total enclosure measurement
method for an existing lead emission unit subject to the total enclosure
requirements of Section 226.155 must notify the Section Manager of the
measurement method by which the owner or operator will comply with the
requirements of this Section. The notification must include an updated CPMP
complying with the appropriate requirements for the new measurement method and
must occur at least 30 days prior to changing the method.