25 Pa. Code § 78a.64a - Secondary containment
(a) Well
sites shall be designed and constructed using secondary containment.
(b) All regulated substances, including solid
wastes and other regulated substances in equipment or vehicles, shall be
managed within secondary containment. This subsection does not apply to fuel
stored in equipment or vehicle fuel tanks unless the equipment or vehicle is
being refueled at the well site.
(c) Secondary containment must meet all of
the following:
(1) Secondary containment must
be used on the well site when any equipment that will be used for any phase of
drilling, casing, cementing, hydraulic fracturing or flowback operations is
brought onto a well site and when regulated substances including drilling mud,
drilling mud additives, hydraulic oil, diesel fuel, hydraulic fracturing
additives or flowback are brought onto or generated at the well site.
(2) Secondary containment must have a
coefficient of permeability no greater than 1 x
10-10 cm/sec.
(3) The physical and chemical characteristics
of all liners, coatings or other materials used as part of the secondary
containment, that could potentially come into direct contact with regulated
substances being stored, must be compatible with the regulated substance and be
resistant to physical, chemical and other failure during handling, installation
and use. Liner compatibility must satisfy compatibility test methods as
approved by the Department.
(d) Methods of secondary containment open to
the atmosphere must have storage capacity sufficient to hold the volume of the
largest single aboveground primary containment, plus an additional 10% of
volume for precipitation. Using double walled tanks capable of detecting a leak
in the primary containment fulfill the requirements in this subsection. Tanks
that are manifolded together shall be designed in a manner to prevent the
uncontrolled discharge of multiple manifolded tanks.
(e) All secondary containment shall be
inspected weekly to ensure integrity. If the secondary containment is damaged
or compromised, the well operator shall repair the secondary containment as
soon as practicable. The well operator shall maintain records of any repairs
until the well site is restored. Stormwater shall be removed as soon as
possible and prior to the capacity of secondary containment being reduced by
10% or more.
(f) Regulated
substances that escape from primary containment or are otherwise spilled onto
secondary containment shall be removed as soon as possible. After removal of
the regulated substances the operator shall inspect the secondary containment.
If the secondary containment did not completely contain the material, the
operator shall notify the Department and remediate the affected area in
accordance with §
78a.66 (relating to reporting and
remediating spills and releases).
(g) Stormwater that comes into contact with
regulated substances stored within the secondary containment shall be managed
as residual waste.
(h) Inspection
reports and maintenance records shall be available at the well site for review
by the Department.
(i)
Documentation of chemical compatibility of secondary containment with material
stored within the system shall be provided to the Department upon
request.
Notes
This section cited in 25 Pa. Code § 78a.65 (relating to site restoration).
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