(a) Impoundments or tanks for storing
leachate before or during treatment shall be constructed in accordance with
§§
299.122,
299.142 and
299.145 (relating to storage
tanks; general requirements; and failure).
(b) An onsite leachate storage system shall
be part of each leachate treatment method used by the operator. The storage
system shall contain impoundments or tanks for storage of leachate. For
noncaptive facilities, the tanks or impoundments shall have a storage capacity
at least equal to the maximum expected production of leachate for a 30-day
period for the life of the facility estimated under §
289.513 (relating to leachate
treatment plan). For captive facilities, the tank or impoundment shall have
sufficient storage capacity to ensure proper operation of the treatment
facility in accordance with the approved leachate treatment plan and shall meet
the performance standards in §
289.537(a)(1)
(relating to leachate collection system within protective cover). No more than
25% of the total leachate storage capacity may be used for flow equalization on
a regular basis.
(c) The
impoundments or tanks shall be aerated as necessary to prevent and control
odors. Impoundments or tanks shall each have a capacity of at least 250,000
gallons, unless otherwise approved by the Department.
(d) The storage capacity of impoundments and
tanks at a site shall be increased, if additional storage is required, prior to
each major phase of construction and as otherwise necessary.
(e) Leachate storage capacity may not be
considered to include leachate that may have collected in or on the liner
system.
(f) Necessary collection
and containment systems shall be installed prior to the deposition of solid
waste at the site. A leachate treatment or handling system approved by the
Department under §
289.513 shall be installed or
ready for use prior to the storage or disposal of solid waste at the
site.
(g) For areas permitted after
January 13, 2001, all underground pipes used for the transport of leachate from
the liner system to the leachate storage impoundments or tanks shall be
equipped with secondary containment or comply with §
245.445 (relating to methods for
release detection for piping). Secondary containment shall be designed,
constructed and installed to direct any release to an area that can be
inspected for leaks.