Current through September 21, 2024
(a) Commencement of
closure: Approved closure activities shall commence no later than thirty (30)
days after the date that each unit receives the known final receipt of wastes
and shall be completed within one hundred eighty (180) days following
commencement of closure. The Administrator may approve:
(i) Delayed closure of a unit or facility if
the unit or facility has additional remaining disposal capacity, and the owner
demonstrates that there will be no threats to human health or the environment
from the unclosed facility or unit.
(ii) Extensions of the closure period if
needed to adequately complete closure activities and the owner demonstrates
that there will be no threats to human health or the environment from the
unclosed facility or unit.
(b) Notification and certification of
closure: Prior to the commencement of unit and facility closure activities, the
operator shall notify the Administrator in writing. Within ninety (90) days
following closure of each unit and facility, the operator shall submit a
certification with supporting documentation signed by an engineer licensed to
practice in Wyoming that closure has been completed in accordance with the
approved closure plan and place a copy of the certification in the facility
operating record.
(c) Notice on
deed: At facility closure, an instrument that clearly gives notice of the
restrictions that apply to future activities on the disposal facility property
shall be filed for recording by the registrar of deeds (county clerk) in the
county where the facility is located. Wording of such an instrument shall
indicate that the property has been used as a construction demolition waste
disposal facility. This shall be recorded prior to any property transaction
resulting in another use for the property. The owner/operator, or its
successors, shall ensure that post-closure use of the property will be
restricted to prevent any disturbance to the facility's containment system
including caps and liners, or the functioning of the facility's monitoring
system. The owner or operator may request permission from the Administrator to
remove the notation from the deed if all wastes are removed from the
facility.
(d) Length of
post-closure period: The post-closure period shall extend for a minimum five
(5) years after completion of closure activities. The post-closure period shall
be automatically extended until such time when the Administrator determines,
upon petition by the operator accompanied by submission of relevant
information, that the facility has been adequately stabilized in a manner
protective of human health and the environment.
(e) Design and construction standards:
(i) Minimum period for maintenance of access
restriction: The operator shall not remove the facility's fence, gates and any
other restrictions until the site has been closed and revegetated, if
post-closure land use requires establishment of vegetative cover. Post-closure
maintenance activities will be required for a minimum of 5 years. The permit
application shall describe the methods that will be used to maintain access
restrictions to any closed facility.
(ii) Prevention of erosion or ponding
problems: The site shall be designed and constructed to inhibit future problems
with erosion or ponding of surface water over filled areas. This may be done by
site grading and revegetation, emplacement of rip rap or other appropriate
means. The permit application shall describe the methods by which surface
erosion or water ponding problems identified during site inspections will be
corrected.
(iii) Minimum thickness
of subsoil and topsoil for final cover: For closure, a compacted layer of
subsoil or a combination of materials as specified in the permit, at least two
feet (2') thick shall be constructed over the refuse or any intermediate cover
already in place. This compacted layer shall be covered with at least six
inches (6") of topsoil and graded to prevent erosion or surface water ponding.
The permit application shall include a description of the final soil cover and
how it will be constructed, as well as methods used to revegetate the
site.
(iv) Seeding specifications:
Any portion of the site disturbed by solid waste disposal activities shall be
reseeded consistent with the post-closure land use, in order to establish
vegetation capable of minimizing wind and water erosion of the final cover.
Vegetation shall be of a diverse mixture selected for compatibility with
climatic conditions, require little maintenance and have root depths that will
not exceed the depth of the final cover.
(v) Surveyed corners: If not accomplished
previously, all site boundary corners shall be surveyed and marked with
permanent survey caps upon facility closure.
(vi) Surface water diversion: Surface water
diversion structures shall be maintained in operating condition throughout the
closure/post-closure period. The permit application shall include the method
that will be used to divert surface water from the site during the post-closure
period. Facility inspections shall be conducted at least twice per year and
problems encountered shall be promptly corrected.
(f) Monitoring information: The application
shall demonstrate compliance with Section
8 and describe the methods by which all
environmental monitoring systems will be maintained for the length of the
closure/post-closure period.
(g)
Recordkeeping: The operator shall comply with the applicable recordkeeping
requirements of Section
9.
(h) Reporting: The operator shall comply with
the applicable recordkeeping requirements of Section
10.
(i) Supporting documentation: The application
shall include any supporting documentation listed in Section
16 that is pertinent to the
closure/post-closure phase, including but not limited to:
(i) A final contour map.
(ii) A general facility plot plan at a scale
approved by the Administrator illustrating past areas of waste deposition,
estimated dates of fill and any other pertinent features.
(iii) A map or aerial photograph of the area
shall be submitted showing land ownership, land use and zoning within one mile
of the disposal site. The map or photograph shall be of sufficient scale to
show all city boundaries, each occupied dwelling house, schools, hospitals,
industrial buildings, water wells, water courses, road and other applicable
details and shall indicate the general topography.
(j) Closure permit application requirements:
Closure permit applications shall include the information in this paragraph and
demonstrate compliance with paragraphs e - j of this section. A copy of the
pertinent materials from the approved permit application or approved renewal
permit application, revised and updated as necessary, may be used to fulfill
these requirements.
(i) Permit application
form: Each closure permit application shall contain a permit application form
signed in the manner described in Section
2(a)(ii).
(ii) General information:
(A) General site information specified in
Sections 3(a) through (e) and
(i).
(B) A narrative describing the site operating
history including the dates of operation, the disposal methods used and the
types and amounts of waste accepted.
(C) A description of the closure/post-closure
stage of landfill development, including:
(I)
A description of the land use anticipated after closure.
(II) The wording of the deed
notice.
(III) If the facility is
open to the public, a copy of the notice of closure.
(iii) Site geology: Geologic
information required by Section
5.
