Indiana Administrative Code
Title 329 - SOLID WASTE MANAGEMENT DIVISION
Article 10 - SOLID WASTE LAND DISPOSAL FACILITIES
Rule 26 - Restricted Waste Sites Type I and Type II and Nonmunicipal Solid Waste Landfills; Liner System Design Standards and Height Increases
Section 26-2 - Design standards; nonmunicipal solid waste landfills
Universal Citation: 329 IN Admin Code 26-2
Current through September 18, 2024
Authority: IC 13-14-8-7; IC 13-15-2-1; IC 13-19-3-1
Affected: IC 13-30-2; IC 36-9-30
Sec. 2.
On and after the effective date of this article, the fill area of new nonmunicipal solid waste landfills and horizontal expansions of the fill area to areas beyond that which previously have been approved for existing facilities, the following must be required:
(1) The following are requirements for nonmunicipal solid waste landfills, except for the alternative provisions of subdivision (2):
(A) Have a leachate
collection system with the following specifications:
(i) A drainage layer overlying the entire
base of the proposed fill area, with a minimum thickness of one (1) foot and a
minimum hydraulic conductivity of not less than 1 ×
10-3 centimeters per second.
(ii) The base of the drainage layer must have
a minimum slope of two percent (2%) toward the leachate collection
lines.
(iii) The upper three (3)
feet of material beneath the drainage layer and piping must be recompacted to
achieve an equivalent hydraulic conductivity of not more than 1 ×
10-7 centimeters per second.
(iv) The system must be designed to limit the
leachate level above the base of the landfill to a maximum of one(1) foot under
the conditions that would be present after the final cover has been placed at
the landfill.
(v) A piping system
with a minimum slope of five-tenths percent (0.5%) and a minimum diameter of
six (6) inches.
(vi) A maximum
length of leachate collection lines that must not exceed the capabilities of
available clean-out devices.
(vii)
The design submitted for the leachate collection system must adequately address
the following:
(AA) Prevention of crushing
and clogging of the leachate collection system.
(BB) Protection of the liner and the leachate
collection system from damage due to uplift from hydrostatic forces.
(CC) Phasing of construction and inspection
procedures to provide for waste disposal capacity during periods of inclement
weather.
(DD) Prevention of damage
to the system due to freeze/thaw and wet/dry cycles.
(EE) Storage of collected leachate on-site
prior to disposal in a manner adequate to prevent leachate releases to the
environment.
(viii)
Prior to the placement of waste in an area, a report must be submitted to the
commissioner by a registered professional engineer, certifying that the
leachate collection system in that area has been constructed according to the
approved plans. The report must indicate the boundaries of the area being
certified and must include the results of testing conducted.
(B) Place a barrier immediately
beneath the base of the leachate collection system drainage layer and piping of
at least ten (10) feet of material with an equivalent hydraulic conductivity of
not more than 1 × 10-6 centimeters per
second.
(C) The system may be
designed with a different minimum slope than specified in clause (A)(ii) and
may be operated at a different leachate level than specified in clause (A)(iv)
if it is demonstrated that a comparable level of leachate migration control is
provided.
(2) This subdivision establishes alternative provisions for nonmunicipal solid waste landfills. The requirements of subdivision (1) need not be met if the proposed site meets the following criteria:
(A)
Existence of a minimum fifty (50) foot barrier of material having an equivalent
hydraulic conductivity no greater than 1 ×
10-6 centimeters per second between any locally
useful aquifer and the solid waste.
(B) Demonstration that the ground water
standard specified in 329 IAC 10-29 must not be exceeded in any locally useful
aquifer or surface waters, except on-site retention ponds, without leachate
collection. Consideration must be given to the following:
(i) Concentration and total amount of
contaminants generated.
(ii)
Specific geologic characteristics of the site, including secondary porosity
features occurring in soil or rock, and cation exchange.
(iii) Ground water flow direction and
predicted mechanisms of contaminant attenuation.
(C) Notwithstanding clauses (A) through (B),
other alternative technologies for the design of a nonmunicipal solid waste
landfill may be considered by the commissioner provided the alternative is
demonstrated to provide at least the equivalent protection to human health and
the environment as the standard in subdivision (1).
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