Current through Register Vol. 48, No. 9, September 27, 2024
a.
Following closure of each Class Three landfill, the permittee shall conduct
post-closure care. Post-closure care shall be conducted for a minimum 30 years,
except as provided in paragraph b. below, and consist of at least the
following:
(1) Maintaining the integrity and
effectiveness of any final cover, including making repairs to the cover as
necessary to correct the effects of settlement, subsidence, erosion, or other
events, and preventing run-on and run-off from eroding or otherwise damaging
the final cover;
(2) Maintaining
and operating the leachate collection system in accordance with the
requirements in 258.40., if applicable. The Department may allow the permittee
to stop managing leachate if the permittee demonstrates to the Department's
satisfaction that leachate no longer poses a threat to human health and the
environment;
(3) Monitoring the
groundwater in accordance with the requirements of Subpart E and maintaining
the groundwater monitoring system, if applicable; and,
(4) Maintaining and operating the gas
monitoring system in accordance with the requirements of
Section258.23.
b. The
length of the post-closure care period may be:
(1) Increased by the Department if the
Department determines that the lengthened period is necessary to protect human
health and the environment; or,
(2)
Decreased by the Department if the permittee can provide technical rationale
that the decreased post-closure care period is sufficient to protect human
health and the environment.
c. The permittee of all Class Three landfills
shall prepare a written post-closure plan that includes, at a minimum, the
following information:
(1) A description of
the monitoring and maintenance activities required in paragraph a. for each
Class Three landfill, and the frequency at which these activities will be
performed;
(2) Name, address, and
telephone number of the person or office to contact about the facility during
the post-closure period; and,
(3) A
description of the planned uses of the property during the post-closure period.
Post-closure use of the property shall not disturb the integrity of the final
cover, liner(s), or any other components of the containment system, or the
function of the monitoring systems unless necessary to comply with the
requirements in this Part. The Department may approve any other disturbance of
the containment system if the permittee demonstrates that disturbance of the
final cover, liner or other component of the containment system, including any
removal of waste, will not increase the potential threat to human health or the
environment.
d. Prior to
permit issuance, the permittee shall submit to the Department a post-closure
plan for review and approval. The post-closure plan shall be updated if any
changes occur at the facility which require a deviation from the approved
post-closure plan.
e. Following
completion of the post-closure care period for each Class Three landfill, the
permittee shall submit to the Department, certification that is signed by a
South Carolina registered professional engineer other than the design engineer,
verifying that post-closure care has been completed in accordance with the
post-closure plan.
