Current through Register Vol. 50, No. 9, September 20, 2024
A. Length of Post-Closure
1. Post-closure care for each hazardous waste
management unit subject to the requirements of LAC 33:V.3519-3527 must continue
for at least 30 years after the date of completing closure of that unit and
must consist of at least the following:
a.
monitoring and reporting in accordance with the requirements of LAC
33:V.Chapters 23, 25, 27, 29, 32 and 33; and
b. maintenance and monitoring of waste
containment systems in accordance with the requirements of LAC 33:V.Chapters
23, 25, 27, 29, 32 and 33.
2. Any time preceding partial closure of a
hazardous waste management unit subject to post-closure care requirements or
final closure, or any time during the post-closure period for a particular
unit, the administrative authority may, in accordance with the permit
modification procedures in LAC 33:V.321:
a.
shorten the post-closure care period applicable to the hazardous waste
management unit, or facility, if all disposal units have been closed, if he
finds that the reduced period is sufficient to protect human health and the
environment (e.g., leachate or groundwater monitoring results, characteristics
of the hazardous wastes, application of advanced technology, or alternative
disposal, treatment, or re-use techniques indicate that the hazardous waste
management unit or facility is secure); or
b. extend the post-closure care period
applicable to the hazardous waste management unit or facility if he finds that
the extended period is necessary to protect human health and the environment
(e.g., leachate or groundwater monitoring results indicate a potential for
migration of hazardous wastes at levels which may be harmful to human health
and the environment).
3.
The owner or operator may elect to demonstrate a shortened post-closure care
period meets the requirements of Subparagraph A.2.a of this Section by using
risk assessment methodology. The risk assessment must demonstrate that the
shortened post-closure care period is protective of human health and the
environment in accordance with LAC 33:I.Chapter 13.
B. The administrative authority may require,
at partial and final closure, continuation of any of the security requirements
of LAC 33:V.1507 during part or all of the post-closure period when:
1. hazardous wastes may remain exposed after
completion of partial or final closure; or
2. access by the public or domestic livestock
may pose a hazard to human health.
C. Post-closure use of property on or in
which hazardous wastes remain after partial or final closure must never be
allowed to disturb the integrity of the final cover, liner(s), or any other
components of the containment system, or the function of the facility's
monitoring systems, unless the administrative authority finds that the
disturbance:
1. is necessary to the proposed
use of the property, and will not increase the potential hazard to human health
or the environment; or
2. is
necessary to reduce a threat to human health or the environment.
D. All post-closure care
activities must be in accordance with the provisions of the approved
post-closure plan as specified in LAC 33:V.3525.
AUTHORITY NOTE:
Promulgated in accordance with
R.S.
30:2180 et
seq.
