Sec. 1.
(a)
Applicants for a vertical expansion modification must include the following
with the application:
(1) An environmental
assessment of the proposed expansion area that addresses the following:
(A) The geology and ground water hydrology of
the existing MSWLF site and adjacent areas.
(B) The most recent results from ground water
monitoring, conducted in accordance with the requirements of the MSWLF's
permit, using statistical methods required under the MSWLF's permit.
(C) Identification of adjacent land
uses.
(2) Plot plans
that are certified by a registered professional engineer and that:
(A) use a scale of at least one (1) inch per
one hundred (100) feet for a MSWLF of less than eighty (80) acres;
(B) use a scale of at least one (1) inch per
two hundred (200) feet for a MSWLF of eighty (80) acres or more;
(C) include a bar scale on each
drawing;
(D) include elevations
that correlate with United States Geological Survey (USGS) mean sea level
data;
(E) include existing and
newly proposed surface elevations within three hundred (300) feet of the
facility boundaries;
(F) indicate
the solid waste boundaries and the proposed final contours of the site using:
(i) intervals of no more than two (2) feet if
the MSWLF is less than eighty (80) acres; and
(ii) intervals of no more than five (5) feet
if the MSWLF is equal to or greater than eighty (80) acres; and
(G) indicate the MSWLF elevations
over the six (6) months preceding the application submittal.
(3) Design information that
addresses the following:
(A) A slope stability
analysis for the proposed final slope.
(B) Total and differential settlement
calculations of the MSWLF unit foundation incorporating new loadings.
(C) A foundation bearing capacity analysis if
applicable.
(D) Surface water
control in compliance with
329
IAC 10-15-8(a)(20) and
329
IAC 10-15-8(a)(21).
(E) Sedimentation and erosion control in
compliance with
329
IAC 10-15-8(a)(17).
(4) Operational information that
includes the following:
(A) A description of
the type of operation.
(B) The
number of acres currently permitted.
(C) The total number of acres filled at the
time of application submittal.
(D)
The quantity of waste received at the MSWLF in either cubic yards per day or
tons per day.
(E) The type of waste
received at the site.
(F) The
additional volume of waste proposed for disposal at this MSWLF.
(5) Two (2) geologic cross
sections, one (1) north-south and one (1) east-west, showing approved contours,
proposed contours, and depth of waste placement.
(6) Documented evidence that the existing
MSWLF unit to be vertically expanded has been constructed with, at a minimum,
either of the following:
(A) Design features,
including:
(i) a barrier layer that:
(AA) consists of at least ten (10) feet of
material having a hydraulic conductivity of not more than 1 × 10-6
centimeter per second, where the uppermost three (3) feet of this
material has been recompacted to achieve an equivalent hydraulic conductivity
of not more than 1 × 10-7 centimeters per second;
and
(BB) is directly beneath the
waste; and
(ii) a
leachate collection system approved by the commissioner as required by 329 IAC
2-10-3(1), which was repealed in 1996.
(B) An alternative design that is
demonstrated, to the satisfaction of the commissioner, to be equivalent to the
design standard in clause (A), such as:
(i) a
vertical barrier wall with a leachate extraction system such that an inward
gradient of the ground water flow across the wall is created; or
(ii) a design permitted under 329 IAC 2,
which was repealed in 1996, that is demonstrated to be at least as stringent as
the design standard described in
40 CFR
258.40.
(7) An operational plan for the proposed
vertical expansion area, in accordance with the requirements of
329 IAC
10-15-6.
(8) The names and addresses of all owners or
last taxpayers of record of property of adjoining land that is within one-half
(1/2) mile of the solid waste boundary.
(b) Applicants for a vertical expansion
modification must comply with the following requirements in the application:
(1) Provide a description of the final cover
that meets the requirements of
329
IAC 10-22-6 or
329
IAC 10-22-7, whichever is applicable.
(2) Meet the closure and post-closure
requirements of
329
IAC 10-22 and
329
IAC 10-23.
(3) Meet all of the landfill gas control
requirements of
329 IAC
10-20-17.
(4) Meet all of the financial assurance
requirements of
329
IAC 10-39.
(c) For the purpose of piggybacking, vertical
expansion modification applications may be submitted for an alternative design
under subsection (d)(1) or (d)(2) for MSWLF units that do not meet the
requirements of subsection (a)(6).
(d) The piggyback design consists of
adjoining an existing MSWLF unit with an adjacent new MSWLF unit to gain
airspace created between two (2) units. The following are requirements for an
existing MSWLF unit:
(1) For an existing MSWLF
unit that does not have a leachate collection system as described under 329 IAC
2-10-3(1), which was repealed in 1996, and that has not applied for a vertical
expansion over the existing MSWLF unit that would exceed the maximum approved
elevation of the existing MSWLF unit, the following is required:
(A) The existing MSWLF unit sideslopes that
adjoin the new composite liner MSWLF unit must be constructed in the following
manner with liner components starting from the top of the existing solid waste
placement and extending upward:
(i) Twelve
(12) inches of structural fill as described under
329
IAC 10-22-6(b).
(ii) Twenty-four (24) inches of compacted
soil as described under
329 IAC
10-17-4 with a hydraulic conductivity of 1 ×
10-7 centimeter per second or less.
(iii) Twelve (12) inches of drainage layer as
described under
329
IAC 10-17-8 with a hydraulic conductivity of 1 ×
10-2 centimeter per second or greater.
(iv) Six (6) inches of protective cover as
described under
329
IAC 10-17-11.
(v) The commissioner may approve alternative
liner designs or construction technologies under
329
IAC 10-17-15.
(B) Clean fill material as excluded under
329 IAC
10-3-1(1), restricted waste site Type
IV waste as described under
329 IAC
10-9-4, or construction/demolition waste may be used
to fill and smooth the contours between the MSWLF units.
(2) For an existing MSWLF unit that does not
have a leachate collection system as described under 329 IAC 2-10-3(1), which
was repealed in 1996, and a vertical expansion is proposed over the sideslopes
of the existing MSWLF unit, the newly constructed composite liner MSWLF unit
may adjoin only those sideslopes of the existing MSWLF unit that equal or
exceed fifteen percent (15%). The existing MSWLF unit sideslopes that equal or
exceed fifteen percent (15%) must be constructed in the following manner with
liner components starting from the top of the existing solid waste placement
and extending upward:
(A) Twelve (12) inches
of methane gas venting layer as described under
329
IAC 10-22-6(b) with a hydraulic
conductivity of 1 × 10-3 centimeter per second or
greater.
(B) Twenty-four (24)
inches of barrier layer consisting of the following:
(i) The lower six (6) inches consisting of
structural fill as described under
329
IAC 10-22-6(b).
(ii) The upper eighteen (18) inches
consisting of compacted soil as described under
329 IAC
10-17-4 with a hydraulic conductivity of 1 ×
10-7 centimeter per second or less.
(C) Geomembrane as described under
329
IAC 10-17-6.
(D) Twelve (12) inches of drainage layer as
described under
329
IAC 10-17-8 with a hydraulic conductivity of 1 ×
10-2 centimeter per second or greater.
(E) Eighteen (18) inches of protective cover
as described under
329
IAC 10-17-11.
(F) The commissioner may approve alternative
liner designs or construction technologies under
329
IAC 10-17-15. In addition to this subdivision, the
design must provide a perimeter leachate seep collection pipe located at the
toe of the existing MSWLF unit where the existing MSWLF unit adjoins the new
composite liner MSWLF unit.
(3) An existing MSWLF unit that has
documented evidence of either design as described under subsection (a)(6)(A)
through (a)(6)(B) may propose a piggyback design in accordance with this
rule.
(4) Each piggyback design as
described in subdivisions (1) and (2) and this subdivision must comply with the
following:
(A) The final cover described under
329
IAC 10-22-6(b) must extend over the
existing MSWLF unit piggyback.
(B)
The design must include a surface water drainage system for the altered
contours where the final cover systems of the adjoining MSWLF units
intersect.
(C) The design must
include erosion control measures for the altered contours where the final cover
systems of the adjoining MSWLF units intersect.
(D) The design must include an analysis of
the existing MSWLF unit subgrade bearing capacity to support the additional
solid waste placement within the piggyback.
(E) The design must include an analysis of
settlement in the existing MSWLF unit subgrade to prevent damage to the
piggyback liner or the piggyback leachate collection system as defined under
329 IAC 2-10-3(1), which was repealed in 1996.
(F) The design must include an analysis of
the existing MSWLF unit side slope stability to support the additional solid
waste placement within the piggyback.
(G) The design must include a slope stability
analysis of the piggyback liner and final cover at the interface of each
component.
(H) The design must
include an analysis of settlement of solid waste placement in the existing
MSWLF unit to prevent damage to the piggyback liner or the piggyback leachate
collection system as defined under 329 IAC 2-10-3(1), which was repealed in
1996.
(I) The design must include
a methane gas management system beneath the piggyback liner system.
(e) The commissioner
may deny an application for a vertical expansion for a MSWLF that is
implementing or has initiated a corrective action program under
329 IAC
10-21-13.
(f) If, as a result of this article, there is
an increase in the approved final closure elevations of an MSWLF unit to
maintain minimum slope as required by
329
IAC 10-22, then the increase in the approved final
closure elevations will not be considered a vertical expansion. The revised
final closure elevations must be approved by the commissioner and must comply
with the applicable provisions of
329
IAC 10-22.