(a) Owners and operators of metal underground
storage tank systems with corrosion protection shall comply with all of the
following requirements to ensure that releases due to corrosion are prevented
until the underground storage tank system is permanently closed or undergoes a
change-in-service in accordance with §
245.452 (relating to permanent
closure and changes-in-service).
(1) Corrosion
protection systems shall be operated and maintained to continuously provide
corrosion protection to the metal components of that portion of the tank and
piping that routinely contain regulated substances.
(2) Underground storage tank systems equipped
with cathodic protection systems shall be tested for proper operation by a
qualified cathodic protection tester in accordance with the following
requirements:
(i)
Frequency.
Cathodic protection systems shall be tested within 6 months of installation and
at least every 3 years thereafter.
(ii)
Inspection criteria.
The criteria that are used to determine that cathodic protection is adequate as
required by this section shall be in accordance with a code of practice
developed by a Nationally recognized association.
(iii)
Documentation. Surveys
of cathodic protection systems required under this chapter shall be documented
on a form provided by the Department and shall be provided to the Department
upon request.
(3)
Underground storage tank systems with impressed current cathodic protection
systems shall be checked every 60 days to ensure the equipment is functioning
as designed. At a minimum, the operator or person conducting the 60-day check
shall document the date checked, annotate the system's functioning status, and
for systems equipped with a direct current readout meter, record the amount of
current indicated on the meter.
(4)
For underground storage tank systems using cathodic protection, records of the
operation of the cathodic protection shall be maintained, in accordance with
§
245.435 (relating to reporting and
recordkeeping) to demonstrate compliance with the performance standards in this
section. These records must provide the following:
(i) The results of the last three checks
required in paragraph (3).
(ii) The
results of testing from the last two surveys required in paragraph
(2).
(b)
Monitoring and observation wells shall be clearly identified using industry
codes and standards, and caps shall be secured to prevent unauthorized or
accidental access.
(c) Underground
storage tank systems and storage tank system components, including tanks,
piping, line leak detectors, product sensors and probes, containment sumps,
measuring devices (including gauge sticks), gauges, corrosion protection, spill
prevention, overfill prevention and other appurtenances whose failure could
contribute to a release of product, shall be maintained in a good state of
repair to ensure they function as designed.
(d) Tanks which have been lined and have not
had corrosion protection added in accordance with §
245.422(b)(2)
(relating to upgrading of existing underground storage tank systems) shall have
the lining evaluated by, or under the direct onsite supervision of, a TL
certified tank installer or by a professional engineer.
(1) Evaluations must adhere to an evaluation
process developed by a National association identified in §
245.405 (relating to codes and
standards) (See API 1631 and NLPA 631) as follows:
(i) Ten years after lining
installation.
(ii) Every 5 years
after the preceding evaluation.
(2) Each evaluation finding shall be
documented on a form approved by the Department and shall be maintained at the
facility for the duration of the tank's operating life.
(e) Lined tank systems that do not meet
original design specifications or have not been evaluated as required in
subsection (d)(1) and (2) shall be emptied, removed from service and
permanently closed in accordance with §
245.451 (relating to temporary
removal from service (out-of-service)) and § 245.452.
(f) Primary and secondary containment
structures, containment sumps and spill prevention equipment must be maintained
in a leak-free condition. If any liquid or regulated substance is detected, the
liquid or regulated substance shall be immediately removed and the defective
component, if applicable, shall be repaired in accordance with §
245.434 (relating to repairs
allowed). Repairs, including those performed to stop infiltration, shall be
tested in accordance with § 245.434(4).
(g) A check for water in petroleum tanks
shall be performed monthly and excess water shall be promptly removed as
necessary. Water may not exceed the tank manufacturer's recommendations,
product supplier's guidelines, or 2 inches of accumulation in the bottom of the
tank, whichever is less. No amount of water is desirable in gasoline containing
ethanol. Therefore, water should not be allowed to accumulate in tanks
containing ethanol. Excess water shall be properly managed in accordance with
applicable State and Federal requirements, such as Chapter 299 (relating to
storage and transportation of residual waste), 40 CFR Part
261 , Subpart B
(relating to criteria for identifying the characteristics of hazardous waste
and for listing hazardous waste) and 29 CFR Part
1910 (relating to occupational
safety and health standards).