N.J. Admin. Code § 7:14B-4A.2 - Installation, inspection, and release detection requirements specific to underground storage tank systems with field-constructed tanks and airport hydrant systems
(a) The
owner and operator may use single-walled piping when installing or replacing
piping associated with underground storage tank systems with field-constructed
tanks greater than 50,000 gallons and piping associated with airport hydrant
systems. Piping associated with underground storage tank systems with
field-constructed tanks less than or equal to 50,000 gallons that are not part
of an airport hydrant system shall comply with the requirements for secondary
containment in accordance with N.J.A.C.
7:14B-4.1(a) 2iv,
when installed or replaced.
(b) In
addition to conducting walkthrough inspections in accordance with N.J.A.C.
7:14B-5.12, the owner and operator shall include, at least once every 30 days,
the following additional areas for airport hydrant systems inspections, if
confined space entry according to the Occupational Safety and Health
Administration (see 29 CFR Part 1910) is not required, or at least annually if
confined space entry is required; and maintain records documenting the
inspection according to N.J.A.C. 7:14B-5.12(c):
1. Visually check hydrant pits for any
damage, remove any liquid or debris, and check for any leaks; and
2. Check hydrant piping vaults for any
hydrant piping leaks.
(c) The owner and operator of an underground
storage tank system with field-constructed tanks and airport hydrant systems
shall comply with the release detection requirements described below:
1. Field-constructed tanks with a capacity
less than or equal to 50,000 gallons, and underground piping associated with
field-constructed tanks less than or equal to 50,000 gallons shall meet the
release detection requirements in accordance with N.J.A.C. 7:14B-6.
2. Field-constructed tanks with a capacity
greater than 50,000 gallons shall meet either the requirements in N.J.A.C.
7:14B-6 (except N.J.A.C.
7:14B-6.5(a) 5 or 6
shall be combined with inventory control as stated below) or use one or a
combination of the following alternative methods of release detection:
i. Conduct an annual tank tightness test that
can detect a 0.5 gallon per hour leak rate;
ii. Use an automatic tank gauging system to
perform release detection at least every 30 days that can detect a leak rate
less than or equal to one gallon per hour. This method must be combined with a
tank tightness test that can detect a 0.2 gallon per hour leak rate performed
at least every three years;
iii.
Use an automatic tank gauging system to perform release detection at least
every 30 days that can detect a leak rate less than or equal to two gallons per
hour. This method must be combined with a tank tightness test that can detect a
0.2 gallon per hour leak rate performed at least every two years;
iv. Perform vapor monitoring (conducted in
accordance with N.J.A.C.
7:14B-6.5(a) 5 for
a tracer compound placed in the tank system) capable of detecting a 0.1 gallon
per hour leak rate at least every two years;
v. Perform inventory control (conducted in
accordance with Department of Defense Directive 4140.25; ATA Airport Fuel
Facility Operations and Maintenance Guidance Manual; or equivalent procedures)
at least every 30 days that can detect a leak equal to or less than 0.5 percent
of flow-through; and
(1) Perform a tank
tightness test that can detect a 0.5 gallon per hour leak rate at least every
two years; or
(2) Perform vapor
monitoring or ground water monitoring (conducted in accordance with
N.J.A.C.
7:14B-6.5(a) 5 or
6, respectively, for the stored regulated substance) at least every 30 days;
or
vi. Another method of
release detection may be used if the owner and operator comply with the
requirements below. In evaluating a method, the Department shall consider the
size of release that the method can detect and the frequency and reliability
with which it can be detected.
(1)
Demonstrate to the Department that the alternate method(s) can detect a release
as effectively as any of the methods allowed in (c)2i through v
above.
(2) Obtain approval from the
Department, through the issuance of a permit pursuant to N.J.A.C. 7:14B-10, and
comply with any conditions imposed by the Department on its use to ensure the
protection of human health and the environment.
3. Underground piping associated with airport
hydrant systems and field-constructed tanks greater than 50,000 gallons shall
meet either the requirements in N.J.A.C. 7:14B-6 (except N.J.A.C.
7:14B-6.5(a) 5 or 6
shall be combined with inventory control as stated below) or use one or a
combination of the following alternative methods of release detection:
i. Perform a semiannual or annual line
tightness test at or above the piping operating pressure in accordance with the
table below.
Maximum Leak Detection Rate per Test Section Volume
Gallons per Hour (gph) | ||
Test Section Volume | Semiannual Test-Leak Detection Rate | Annual Test-Leak Detection Rate |
<50,000 gallons | 1.0 gph | 0.5 gph |
>/=50,000 to <75,000 gallons | 1.5 gph | 0.75 gph |
>/=75,000 to <100,000 gallons | 2.0 gph | 1.0 gph |
>/=100,000 gallons | 3.0 gph | 1.5 gph |
ii.
Perform vapor monitoring (conducted in accordance with N.J.A.C.
7:14B-6.5(a) 5 for
a tracer compound placed in the tank system) capable of detecting a 0.1 gallon
per hour leak rate at least every two years;
iii. Perform inventory control (conducted in
accordance with Department of Defense Directive 4140.25; ATA Airport Fuel
Facility Operations and Maintenance Guidance Manual; or equivalent procedures)
at least every 30 days that can detect a leak equal to or less than 0.5 percent
of flow-through; and
(1) Perform a line
tightness test (conducted in accordance with paragraph (i) of this section
using the leak rates for the semiannual test) at least every two years;
or
(2) Perform vapor monitoring or
ground water monitoring (conducted in accordance with N.J.A.C.
7:14B-6.5(a) 5 or
6, respectively, for the stored regulated substance) at least every 30 days;
or
iv. Another method of
release detection may be used if the owner and operator comply with the
requirements below. In evaluating a method, the Department shall consider the
size of release that the method can detect and the frequency and reliability
with which it can be detected.
(1)
Demonstrate to the Department that the alternate method(s) can detect a release
as effectively as any of the methods allowed in (c)2i through iii
above.
(2) Obtain approval from the
Department, through the issuance of a permit pursuant to N.J.A.C. 7:14B-10, and
comply with any conditions imposed by the Department on its use to ensure the
protection of human health and the environment.
4. The owner and operator shall maintain
release detection records according to the recordkeeping requirements in
N.J.A.C.
7:14B-6.7.
(d) The Department can direct the owner and
operator of an underground storage tank system with field-constructed tanks or
airport hydrant system permanently closed before October 13, 2015, to assess
the excavation zone and close the underground storage tank system in accordance
with N.J.A.C. 7:14B-9, if releases from the underground storage tank may, as
judged by the Department, pose a current or potential threat to human health
and the environment.
(e) An owner
and operator may use military construction criteria, such as Unified Facilities
Criteria (UFC) 3-460-01, "Petroleum Fuel Facilities," in addition to the codes
of practice listed in N.J.A.C.
7:14B-4.1, when designing,
constructing, and installing airport hydrant systems and underground storage
tank systems with field-constructed tanks.
Notes
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