Current through Register Vol. 48, No. 38, September 20, 2024
a) The
provisions of this Section apply to the control of air pollutant emissions from
tanks for which Section
724.982(b)
references the use of this Section for such air emission control.
b) The owner or operator must control air
pollutant emissions from each tank subject to this Section in accordance with
the following requirements, as applicable:
1)
For a tank that manages hazardous waste that meets all of the conditions
specified in subsections (b)(1)(A) through (b)(1)(C), the owner or operator
must control air pollutant emissions from the tank in accordance with the Tank
Level 1 controls specified in subsection (c) or the Tank Level 2 controls
specified in subsection (d).
A) The hazardous
waste in the tank has a maximum organic vapor pressure that is less than the
maximum organic vapor pressure limit for the tank's design capacity category,
as follows:
i) For a tank design capacity
equal to or greater than 151 m3 (39,900 gal), the
maximum organic vapor pressure limit for the tank is 5.2 kPa (0.75
psig).
ii) For a tank design
capacity equal to or greater than 75 m3 (19,800 gal)
but less than 151 m3 (39,900 gal), the maximum
organic vapor pressure limit for the tank is 27.6 kPa (4.00 psig).
iii) For a tank design capacity less than 75
m3 (19,800 gal), the maximum organic vapor pressure
limit for the tank is 76.6 kPa (11.1 psig).
B) The hazardous waste in the tank is not
heated by the owner or operator to a temperature that is greater than the
temperature at which the maximum organic vapor pressure of the hazardous waste
is determined for the purpose of complying with subsection (b)(1)(A).
C) The owner or operator does not treat the
hazardous waste in the tank using a waste stabilization process, as defined in
35 Ill. Adm. Code
725.981.
2) For a tank that manages hazardous waste
that does not meet all of the conditions specified in subsections (b)(1)(A)
through (b)(1)(C), the owner or operator must control air pollutant emissions
from the tank by using Tank Level 2 controls in accordance with the
requirements of subsection (d). Examples of tanks required to use Tank Level 2
controls include a tank used for a waste stabilization process and a tank for
which the hazardous waste in the tank has a maximum organic vapor pressure that
is equal to or greater than the maximum organic vapor pressure limit for the
tank's design capacity category, as specified in subsection
(b)(1)(A).
c) Owners and
operators controlling air pollutant emissions from a tank using Tank Level 1
controls must meet the requirements specified in subsections (c)(1) through
(c)(4):
1) The owner or operator must
determine the maximum organic vapor pressure for a hazardous waste to be
managed in the tank using Tank Level 1 controls before the first time the
hazardous waste is placed in the tank. The maximum organic vapor pressure must
be determined using the procedures specified in Section
724.983(c).
Thereafter, the owner or operator must perform a new determination whenever
changes to the hazardous waste managed in the tank could potentially cause the
maximum organic vapor pressure to increase to a level that is equal to or
greater than the maximum organic vapor pressure limit for the tank design
capacity category specified in subsection (b)(1)(A), as applicable to the
tank.
2) The tank must be equipped
with a fixed roof designed to meet the following specifications:
A) The fixed roof and its closure devices
must be designed to form a continuous barrier over the entire surface area of
the hazardous waste in the tank. The fixed roof may be a separate cover
installed on the tank (e.g., a removable cover mounted on an open-top tank) or
may be an integral part of the tank structural design (e.g., a horizontal
cylindrical tank equipped with a hatch).
B) The fixed roof must be installed in such a
manner that there are no visible cracks, holes, gaps, or other open spaces
between roof section joints or between the interface of the roof edge and the
tank wall.
C) Either of the
following must be true of each opening in the fixed roof and of any manifold
system associated with the fixed roof:
i) The
opening or manifold system is equipped with a closure device designed to
operate so that when the closure device is secured in the closed position there
are no visible cracks, holes, gaps, or other open spaces in the closure device
or between the perimeter of the opening and the closure device; or
ii) The opening or manifold system is
connected by a closed-vent system that is vented to a control device. The
control device must remove or destroy organics in the vent stream, and it must
be operating whenever hazardous waste is managed in the tank, except as
provided for in subsection (c)(2)(E).
D) The fixed roof and its closure devices
must be made of suitable materials that will minimize exposure of the hazardous
waste to the atmosphere, to the extent practical, and will maintain the
integrity of the fixed roof and closure devices throughout their intended
service life. Factors to be considered when selecting the materials for and
designing the fixed roof and closure devices must include the following: the
organic vapor permeability; the effects of any contact with the hazardous waste
or its vapors managed in the tank; the effects of outdoor exposure to wind,
moisture, and sunlight; and the operating practices used for the tank on which
the fixed roof is installed.
E) The
control device operated pursuant to subsection (c)(2)(C) needs not remove or
destroy organics in the vent stream under the following conditions:
i) During periods when it is necessary to
provide access to the tank for performing the activities of subsection
(c)(2)(E)(ii), venting of the vapor headspace underneath the fixed roof to the
control device is not required, opening of closure devices is allowed, and
removal of the fixed roof is allowed. Following completion of the activity, the
owner or operator must promptly secure the closure device in the closed
position or reinstall the cover, as applicable, and resume operation of the
control device; and
ii) During
periods of routine inspection, maintenance, or other activities needed for
normal operations, and for removal of accumulated sludge or other residues from
the bottom of the tank.
BOARD NOTE: Subsections (c)(2)(E)(i) and (c)(2)(E)(ii) are
derived from
40 CFR
264.1084(c)(2)(iii)(B)
(1) and (c)(2)(iii)(B)(2), which the Board
has codified here to comport with Illinois Administrative Code format
requirements.
3) Whenever a hazardous waste is in the tank,
the fixed roof must be installed with each closure device secured in the closed
position, except as follows:
A) Opening of
closure devices or removal of the fixed roof is allowed at the following times:
i) To provide access to the tank for
performing routine inspection, maintenance, or other activities needed for
normal operations. Examples of such activities include those times when a
worker needs to open a port to sample the liquid in the tank, or when a worker
needs to open a hatch to maintain or repair equipment. Following completion of
the activity, the owner or operator must promptly secure the closure device in
the closed position or reinstall the cover, as applicable, to the
tank.
ii) To remove accumulated
sludge or other residues from the bottom of the tank.
B) Opening of a spring-loaded pressure-vacuum
relief valve, conservation vent, or similar type of pressure relief device that
vents to the atmosphere is allowed during normal operations for the purpose of
maintaining the tank internal pressure in accordance with the tank design
specifications. The device must be designed to operate with no detectable
organic emissions when the device is secured in the closed position. The
settings at which the device opens must be established so that the device
remains in the closed position whenever the tank internal pressure is within
the internal pressure operating range determined by the owner or operator based
on the tank manufacturer recommendations, applicable regulations, fire
protection and prevention codes, standard engineering codes and practices, or
other requirements for the safe handling of flammable, ignitable, explosive,
reactive, or hazardous materials. Examples of normal operating conditions that
may require these devices to open are during those times when the tank internal
pressure exceeds the internal pressure operating range for the tank as a result
of loading operations or diurnal ambient temperature fluctuations.
C) Opening of a safety device, as defined in
35 Ill. Adm. Code 725.981, is allowed at any time conditions require doing so
to avoid an unsafe condition.
4) The owner or operator must inspect the air
emission control equipment in accordance with the following requirements.
A) The fixed roof and its closure devices
must be visually inspected by the owner or operator to check for defects that
could result in air pollutant emissions. Defects include, but are not limited
to, visible cracks, holes, or gaps in the roof sections or between the roof and
the tank wall; broken, cracked, or otherwise damaged seals or gaskets on
closure devices; and broken or missing hatches, access covers, caps, or other
closure devices.
B) The owner or
operator must perform an initial inspection of the fixed roof and its closure
devices on or before the date that the tank becomes subject to this Section.
Thereafter, the owner or operator must perform the inspections at least once
every year except under the special conditions provided for in subsection
(l).
C) In the event that a defect
is detected, the owner or operator must repair the defect in accordance with
the requirements of subsection (k).
D) The owner or operator must maintain a
record of the inspection in accordance with the requirements specified in
Section
724.989(b).
d) Owners and operators controlling air
pollutant emissions from a tank using Tank Level 2 controls must use one of the
following tanks:
1) A fixed-roof tank equipped
with an internal floating roof in accordance with the requirements specified in
subsection (e);
2) A tank equipped
with an external floating roof in accordance with the requirements specified in
subsection (f);
3) A tank vented
through a closed-vent system to a control device in accordance with the
requirements specified in subsection (g);
4) A pressure tank designed and operated in
accordance with the requirements specified in subsection (h); or
5) A tank located inside an enclosure that is
vented through a closed-vent system to an enclosed combustion control device in
accordance with the requirements specified in subsection (i).
e) The owner or operator that
controls air pollutant emissions from a tank using a fixed roof with an
internal floating roof must meet the requirements specified in subsections
(e)(1) through (e)(3).
1) The tank must be
equipped with a fixed roof and an internal floating roof in accordance with the
following requirements:
A) The internal
floating roof must be designed to float on the liquid surface except when the
floating roof must be supported by the leg supports.
B) The internal floating roof must be
equipped with a continuous seal between the wall of the tank and the floating
roof edge that meets either of the following requirements:
i) A single continuous seal that is either a
liquid-mounted seal or a metallic shoe seal, as defined in 35 Ill. Adm. Code
725.981; or
ii) Two continuous
seals mounted one above the other. The lower seal may be a vapor-mounted
seal.
C) The internal
floating roof must meet the following specifications:
i) Each opening in a noncontact internal
floating roof except for automatic bleeder vents (vacuum breaker vents) and the
rim space vents is to provide a projection below the liquid surface.
ii) Each opening in the internal floating
roof must be equipped with a gasketed cover or a gasketed lid except for leg
sleeves, automatic bleeder vents, rim space vents, column wells, ladder wells,
sample wells, and stub drains.
iii)
Each penetration of the internal floating roof for the purpose of sampling must
have a slit fabric cover that covers at least 90 percent of the
opening.
iv) Each automatic bleeder
vent and rim space vent must be gasketed.
v) Each penetration of the internal floating
roof that allows for passage of a ladder must have a gasketed sliding
cover.
vi) Each penetration of the
internal floating roof that allows for passage of a column supporting the fixed
roof must have a flexible fabric sleeve seal or a gasketed sliding
cover.
2) The
owner or operator must operate the tank in accordance with the following
requirements:
A) When the floating roof is
resting on the leg supports, the process of filling, emptying, or refilling
must be continuous and must be completed as soon as practical.
B) Automatic bleeder vents are to be set
closed at all times when the roof is floating, except when the roof is being
floated off or is being landed on the leg supports.
C) Prior to filling the tank, each cover,
access hatch, gauge float well or lid on any opening in the internal floating
roof must be bolted or fastened closed (i.e., no visible gaps). Rim space vents
must be set to open only when the internal floating roof is not floating or
when the pressure beneath the rim exceeds the manufacturer's recommended
setting.
3) The owner or
operator must inspect the internal floating roof in accordance with the
procedures specified as follows:
A) The
floating roof and its closure devices must be visually inspected by the owner
or operator to check for defects that could result in air pollutant emissions.
Defects include, but are not limited to, any of the following: when the
internal floating roof is not floating on the surface of the liquid inside the
tank; when liquid has accumulated on top of the internal floating roof; when
any portion of the roof seals have detached from the roof rim; when holes,
tears, or other openings are visible in the seal fabric; when the gaskets no
longer close off the hazardous waste surface from the atmosphere; or when the
slotted membrane has more than 10 percent open area.
B) The owner or operator must inspect the
internal floating roof components as follows, except as provided in subsection
(e)(3)(C):
i) Visually inspect the internal
floating roof components through openings on the fixed-roof (e.g., manholes and
roof hatches) at least once every 12 months after initial fill, and
ii) Visually inspect the internal floating
roof, primary seal, secondary seal (if one is in service), gaskets, slotted
membranes, and sleeve seals (if any) each time the tank is emptied and degassed
and at least once every 10 years.
C) As an alternative to performing the
inspections specified in subsection (e)(3)(B) for an internal floating roof
equipped with two continuous seals mounted one above the other, the owner or
operator may visually inspect the internal floating roof, primary and secondary
seals, gaskets, slotted membranes, and sleeve seals (if any) each time the tank
is emptied and degassed and at least every five years.
D) Prior to each inspection required by
subsection (e)(3)(B) or (e)(3)(C), the owner or operator must notify the Agency
in advance of each inspection to provide the Agency with the opportunity to
have an observer present during the inspection. The owner or operator must
notify the Agency of the date and location of the inspection, as follows:
i) Prior to each visual inspection of an
internal floating roof in a tank that has been emptied and degassed, written
notification must be prepared and sent by the owner or operator so that it is
received by the Agency at least 30 calendar days before refilling the tank,
except when an inspection is not planned, as provided for in subsection
(e)(3)(D)(ii).
ii) When a visual
inspection is not planned and the owner or operator could not have known about
the inspection 30 calendar days before refilling the tank, the owner or
operator must notify the Agency as soon as possible, but no later than seven
calendar days before refilling of the tank. This notification may be made by
telephone and immediately followed by a written explanation for why the
inspection is unplanned. Alternatively, written notification, including the
explanation for the unplanned inspection, may be sent so that it is received by
the Agency at least seven calendar days before refilling the tank.
E) In the event that a defect is
detected, the owner or operator must repair the defect in accordance with the
requirements of subsection (k).
F)
The owner or operator must maintain a record of the inspection in accordance
with the requirements specified in Section
724.989(b).
4) Safety devices, as defined in 35 Ill. Adm.
Code 725.981, may be installed and operated as necessary on any tank complying
with the requirements of this subsection (e).
f) The owner or operator that controls air
pollutant emissions from a tank using an external floating roof must meet the
requirements specified in subsections (f)(1) through (f)(3).
1) The owner or operator must design the
external floating roof in accordance with the following requirements:
A) The external floating roof must be
designed to float on the liquid surface except when the floating roof must be
supported by the leg supports.
B)
The floating roof must be equipped with two continuous seals, one above the
other, between the wall of the tank and the roof edge. The lower seal is
referred to as the primary seal, and the upper seal is referred to as the
secondary seal.
i) The primary seal must be a
liquid-mounted seal or a metallic shoe seal, as defined in 35 Ill. Adm. Code
725.981. The total area of the gaps between the tank wall and the primary seal
must not exceed 212 square centimeters (cm2) per
meter (10.0 square inches (in2) per foot) of tank
diameter, and the width of any portion of these gaps must not exceed 3.8
centimeters (cm) (1.5 in). If a metallic
shoe seal is used for the primary seal, the metallic shoe seal must be designed
so that one end extends into the liquid in the tank and the other end extends a
vertical distance of at least 61 cm (24 in) above the liquid surface.
ii) The secondary seal must be mounted above
the primary seal and cover the annular space between the floating roof and the
wall of the tank. The total area of the gaps between the tank wall and the
secondary seal must not exceed 21.2 cm2 per meter
(1.00 in2 per foot) of tank diameter, and the width
of any portion of these gaps must not exceed
1.3 cm (0.51
in).
C) The external
floating roof must meet the following specifications:
i) Except for automatic bleeder vents (vacuum
breaker vents) and rim space vents, each opening in a noncontact external
floating roof must provide a projection below the liquid surface.
ii) Except for automatic bleeder vents, rim
space vents, roof drains, and leg sleeves, each opening in the roof must be
equipped with a gasketed cover, seal, or lid.
iii) Each access hatch and each gauge float
well must be equipped with a cover designed to be bolted or fastened when the
cover is secured in the closed position.
iv) Each automatic bleeder vent and each rim
space vent must be equipped with a gasket.
v) Each roof drain that empties into the
liquid managed in the tank must be equipped with a slotted membrane fabric
cover that covers at least 90 percent of the area of the opening.
vi) Each unslotted and slotted guide pole
well must be equipped with a gasketed sliding cover or a flexible fabric sleeve
seal.
vii) Each unslotted guide
pole must be equipped with a gasketed cap on the end of the pole.
viii) Each slotted guide pole must be
equipped with a gasketed float or other device that closes off the liquid
surface from the atmosphere.
ix)
Each gauge hatch and each sample well must be equipped with a gasketed
cover.
2) The
owner or operator must operate the tank in accordance with the following
requirements:
A) When the floating roof is
resting on the leg supports, the process of filling, emptying, or refilling
must be continuous and must be completed as soon as practical.
B) Except for automatic bleeder vents, rim
space vents, roof drains, and leg sleeves, each opening in the roof must be
secured and maintained in a closed position at all times except when the
closure device must be open for access.
C) Covers on each access hatch and each gauge
float well must be bolted or fastened when secured in the closed
position.
D) Automatic bleeder
vents must be set closed at all times when the roof is floating, except when
the roof is being floated off or is being landed on the leg supports.
E) Rim space vents must be set to open only
at those times that the roof is being floated off the roof leg supports or when
the pressure beneath the rim seal exceeds the manufacturer's recommended
setting.
F) The cap on the end of
each unslotted guide pole must be secured in the closed position at all times
except when measuring the level or collecting samples of the liquid in the
tank.
G) The cover on each gauge
hatch or sample well must be secured in the closed position at all times except
when the hatch or well must be opened for access.
H) Both the primary seal and the secondary
seal must completely cover the annular space between the external floating roof
and the wall of the tank in a continuous fashion except during
inspections.
3) The owner
or operator must inspect the external floating roof in accordance with the
procedures specified as follows:
A) The owner
or operator must measure the external floating roof seal gaps in accordance
with the following requirements:
i) The owner
or operator must perform measurements of gaps between the tank wall and the
primary seal within 60 calendar days after initial operation of the tank
following installation of the floating roof and, thereafter, at least once
every five years.
ii) The owner or
operator must perform measurements of gaps between the tank wall and the
secondary seal within 60 calendar days after initial operation of the tank
following installation of the floating roof and, thereafter, at least once
every year.
iii) If a tank ceases
to hold hazardous waste for a period of one year or more, subsequent
introduction of hazardous waste into the tank must be considered an initial
operation for the purposes of subsections (f)(3)(A)(i) and
(f)(3)(A)(ii).
iv) The owner or
operator must determine the total surface area of gaps in the primary seal and
in the secondary seal individually using the procedure of subsection (f)(3)(D).
v) In the event that the seal gap
measurements do not conform to the specifications in subsection (f)(1)(B), the
owner or operator must repair the defect in accordance with the requirements of
subsection (k).
vi) The owner or
operator must maintain a record of the inspection in accordance with the
requirements specified in Section
724.989(b).
B) The owner or operator must visually
inspect the external floating roof in accordance with the following
requirements:
i) The floating roof and its
closure devices must be visually inspected by the owner or operator to check
for defects that could result in air pollutant emissions. Defects include, but
are not limited to, any of the following conditions: holes, tears, or other
openings in the rim seal or seal fabric of the floating roof; a rim seal
detached from the floating roof; all or a portion of the floating roof deck
being submerged below the surface of the liquid in the tank; broken, cracked,
or otherwise damaged seals or gaskets on closure devices; and broken or missing
hatches, access covers, caps, or other closure devices.
ii) The owner or operator must perform an
initial inspection of the external floating roof and its closure devices on or
before the date that the tank becomes subject to this Section. Thereafter, the
owner or operator must perform the inspections at least once every year except
for the special conditions provided for in subsection (l).
iii) In the event that a defect is detected,
the owner or operator must repair the defect in accordance with the
requirements of subsection (k).
iv)
The owner or operator must maintain a record of the inspection in accordance
with the requirements specified in Section
724.989(b).
C) Prior to each inspection required by
subsection (f)(3)(A) or (f)(3)(B), the owner or operator must notify the Agency
in advance of each inspection to provide the Agency with the opportunity to
have an observer present during the inspection. The owner or operator must
notify the Agency of the date and location of the inspection, as follows:
i) Prior to each inspection to measure
external floating roof seal gaps as required under subsection (f)(3)(A),
written notification must be prepared and sent by the owner or operator so that
it is received by the Agency at least 30 calendar days before the date the
measurements are scheduled to be performed.
ii) Prior to each visual inspection of an
external floating roof in a tank that has been emptied and degassed, written
notification must be prepared and sent by the owner or operator so that it is
received by the Agency at least 30 calendar days before refilling the tank,
except when an inspection is not planned as provided for in subsection
(f)(3)(C)(iii).
iii) When a visual
inspection is not planned and the owner or operator could not have known about
the inspection 30 calendar days before refilling the tank, the owner or
operator must notify the Agency as soon as possible, but no later than seven
calendar days before refilling of the tank. This notification may be made by
telephone and immediately followed by a written explanation for why the
inspection is unplanned. Alternatively, written notification, including the
explanation for the unplanned inspection, may be sent so that it is received by
the Agency at least seven calendar days before refilling the tank.
D) Procedure for determining the
total surface area of gaps in the primary seal and the secondary seal:
i) The seal gap measurements must be
performed at one or more floating roof levels when the roof is floating off the
roof supports.
ii) Seal gaps, if
any, must be measured around the entire perimeter of the floating roof in each
place where a 0.32 cm (0.125 in) diameter uniform probe passes freely (without
forcing or binding against the seal) between the seal and the wall of the tank
and measure the circumferential distance of each such location.
iii) For a seal gap measured under subsection
(f)(3), the gap surface area must be determined by using probes of various
widths to measure accurately the actual distance from the tank wall to the seal
and multiplying each such width by its respective circumferential
distance.
iv) The total gap area
must be calculated by adding the gap surface areas determined for each
identified gap location for the primary seal and the secondary seal
individually, and then dividing the sum for each seal type by the nominal
diameter of the tank. These total gap areas for the primary seal and secondary
seal are then compared to the respective standards for the seal type, as
specified in subsection (f)(1)(B).
BOARD NOTE: Subsections (f)(3)(D)(i) through (f)(3)(D)(iv)
are derived from
40 CFR
264.1084(f)(3)(i)(D)
(1) through (f)(3)(i)(D)(4), which the Board
has codified here to comport with Illinois Administrative Code format
requirements.
4) Safety devices, as defined in 35 Ill. Adm.
Code 725.981, may be installed and operated as necessary on any tank complying
with the requirements of subsection (f).
g) The owner or operator that controls air
pollutant emissions from a tank by venting the tank to a control device must
meet the requirements specified in subsections (g)(1) through (g)(3).
1) The tank must be covered by a fixed roof
and vented directly through a closed-vent system to a control device in
accordance with the following requirements:
A) The fixed roof and its closure devices
must be designed to form a continuous barrier over the entire surface area of
the liquid in the tank.
B) Each
opening in the fixed roof not vented to the control device must be equipped
with a closure device. If the pressure in the vapor headspace underneath the
fixed roof is less than atmospheric pressure when the control device is
operating, the closure device must be designed to operate so that when the
closure device is secured in the closed position there are no visible cracks,
holes, gaps, or other open spaces in the closure device or between the
perimeter of the cover opening and the closure device. If the pressure in the
vapor headspace underneath the fixed roof is equal to or greater than
atmospheric pressure when the control device is operating, the closure device
must be designed to operate with no detectable organic emissions.
C) The fixed roof and its closure devices
must be made of suitable materials that will minimize exposure of the hazardous
waste to the atmosphere, to the extent practical, and will maintain the
integrity of the fixed roof and closure devices throughout their intended
service life. Factors to be considered when selecting the materials for and
designing the fixed roof and closure devices must include the following:
organic vapor permeability; the effects of any contact with the liquid and its
vapor managed in the tank; the effects of outdoor exposure to wind, moisture,
and sunlight; and the operating practices used for the tank on which the fixed
roof is installed.
D) The
closed-vent system and control device must be designed and operated in
accordance with the requirements of Section
724.987.
2) Whenever a hazardous waste is in the tank,
the fixed roof must be installed with each closure device secured in the closed
position and the vapor headspace underneath the fixed roof vented to the
control device, except as follows:
A) Venting
to the control device is not required, and opening of closure devices or
removal of the fixed roof is allowed at the following times:
i) To provide access to the tank for
performing routine inspection, maintenance, or other activities needed for
normal operations. Examples of such activities include those times when a
worker needs to open a port to sample liquid in the tank, or when a worker
needs to open a hatch to maintain or repair equipment. Following completion of
the activity, the owner or operator must promptly secure the closure device in
the closed position or reinstall the cover, as applicable, to the
tank.
ii) To remove accumulated
sludge or other residues from the bottom of a tank.
B) Opening of a safety device, as defined in
35 Ill. Adm. Code 725.981, is allowed at any time conditions require doing so
to avoid an unsafe condition.
3) The owner or operator must inspect and
monitor the air emission control equipment in accordance with the following
procedures:
A) The fixed roof and its closure
devices must be visually inspected by the owner or operator to check for
defects that could result in air pollutant emissions. Defects include, but are
not limited to, any of the following: visible cracks, holes, or gaps in the
roof sections or between the roof and the tank wall; broken, cracked, or
otherwise damaged seals or gaskets on closure devices; and broken or missing
hatches, access covers, caps, or other closure devices.
B) The closed-vent system and control device
must be inspected and monitored by the owner or operator in accordance with the
procedures specified in Section 724.987.
C) The owner or operator must perform an
initial inspection of the air emission control equipment on or before the date
that the tank becomes subject to this Section. Thereafter, the owner or
operator must perform the inspections at least once every year except for the
special conditions provided for in subsection (l).
D) In the event that a defect is detected,
the owner or operator must repair the defect in accordance with the
requirements of subsection (k).
E)
The owner or operator must maintain a record of the inspection in accordance
with the requirements specified in Section
724.989(b).
h) The owner or operator that controls air
pollutant emissions by using a pressure tank must meet the following
requirements:
1) The tank must be designed not
to vent to the atmosphere as a result of compression of the vapor headspace in
the tank during filling of the tank to its design capacity.
2) All tank openings must be equipped with
closure devices designed to operate with no detectable organic emissions, as
determined using the procedure specified in Section
724.983(d).
3) Whenever a hazardous waste is in the tank,
the tank must be operated as a closed-vent system that does not vent to the
atmosphere, except under either of the following two conditions:
A) The tank does not need to be operated as a
closed-vent system at those times when the opening of a safety device, as
defined in 35 Ill. Adm. Code 725.981, is required to avoid an unsafe
condition.
B) The tank does not
need to be operated as a closed-vent system at those times when the purging of
inerts from the tank is required and the purge stream is routed to a
closed-vent system and control device designed and operated in accordance with
the requirements of Section 724.987.
i) The owner or operator that controls air
pollutant emissions by using an enclosure vented through a closed-vent system
to an enclosed combustion control device must meet the requirements specified
in subsections (i)(1) through (i)(4).
1) The
tank must be located inside an enclosure. The enclosure must be designed and
operated in accordance with the criteria for a permanent total enclosure, as
specified in "Procedure T - Criteria for and Verification of a Permanent or
Temporary Total Enclosure" under appendix B to
40
CFR 52.741 (VOM Measurement Techniques for
Capture Efficiency), incorporated by reference in 35 Ill. Adm. Code
720.111(b).
The enclosure may have permanent or temporary openings to allow worker access;
passage of material into or out of the enclosure by conveyor, vehicles, or
other mechanical means; entry of permanent mechanical or electrical equipment;
or direct airflow into the enclosure. The owner or operator must perform the
verification procedure for the enclosure, as specified in Section 5.0 to
"Procedure T - Criteria for and Verification of a Permanent or Temporary Total
Enclosure", initially when the enclosure is first installed and, thereafter,
annually.
2) The enclosure must be
vented through a closed-vent system to an enclosed combustion control device
that is designed and operated in accordance with the standards for either a
vapor incinerator, boiler, or process heater specified in Section
724.987.
3) Safety devices, as
defined in 35 Ill. Adm. Code 725.981, may be installed and operated as
necessary on any enclosure, closed-vent system, or control device used to
comply with the requirements of subsections (i)(1) and (i)(2).
4) The owner or operator must inspect and
monitor the closed-vent system and control device, as specified in Section
724.987.
j) The owner or
operator must transfer hazardous waste to a tank subject to this Section in
accordance with the following requirements:
1) Transfer of hazardous waste, except as
provided in subsection (j)(2), to the tank from another tank subject to this
Section or from a surface impoundment subject to Section
724.985
must be conducted using continuous hard-piping or another closed system that
does not allow exposure of the hazardous waste to the atmosphere. For the
purpose of complying with this provision, an individual drain system is
considered to be a closed system when it meets the requirements of subpart RR
of 40 CFR 63 (National Emission Standards for Individual Drain Systems),
incorporated by reference in 35 Ill. Adm. Code
720.111(b).
2) The requirements of subsection (j)(1) do
not apply when transferring a hazardous waste to the tank under any of the
following conditions:
A) The hazardous waste
meets the average VO concentration conditions specified in Section
724.982(c)(1)
at the point of waste origination.
B) The hazardous waste has been treated by an
organic destruction or removal process to meet the requirements in Section
724.982(c)(2).
C) The hazardous waste meets the requirements
of Section
724.982(c)(4).
k) The owner or operator must
repair each defect detected during an inspection performed in accordance with
the requirements of subsection (c)(4), (e)(3), (f)(3), or (g)(3), as follows:
1) The owner or operator must make first
efforts at repair of the defect no later than five calendar days after
detection, and repair must be completed as soon as possible but no later than
45 calendar days after detection except as provided in subsection
(k)(2).
2) Repair of a defect may
be delayed beyond 45 calendar days if the owner or operator determines that
repair of the defect requires emptying or temporary removal from service of the
tank and no alternative tank capacity is available at the site to accept the
hazardous waste normally managed in the tank. In this case, the owner or
operator must repair the defect the next time the process or unit that is
generating the hazardous waste managed in the tank stops operation. Repair of
the defect must be completed before the process or unit resumes
operation.
l) Following
the initial inspection and monitoring of the cover, as required by the
applicable provisions of this Subpart CC, subsequent inspection and monitoring
may be performed at intervals longer than one year under the following special
conditions:
1) In the case when inspecting or
monitoring the cover would expose a worker to dangerous, hazardous, or other
unsafe conditions, then the owner or operator may designate a cover as an
"unsafe to inspect and monitor cover" and comply with all of the following
requirements:
A) Prepare a written
explanation for the cover stating the reasons why the cover is unsafe to
visually inspect or to monitor, if required.
B) Develop and implement a written plan and
schedule to inspect and monitor the cover, using the procedures specified in
the applicable Section of this Subpart CC, as frequently as practicable during
those times when a worker can safely access the cover.
2) In the case when a tank is buried
partially or entirely underground, an owner or operator is required to inspect
and monitor, as required by the applicable provisions of this Section, only
those portions of the tank cover and those connections to the tank (e.g., fill
ports, access hatches, gauge wells, etc.) that are located on or above the
ground surface.