Ill. Admin. Code tit. 35, § 616.444 - Design Requirements
a) The
owner or operator of a surface impoundment must install two or more liners and
a leachate collection system between the liners. This requirement to install
two or more liners may be satisfied by installing a top liner designed,
operated, and constructed of materials to prevent the migration of any
constituent into the liner during the period the facility remains in operation
(including any post-closure monitoring period), and a lower liner designed,
operated, and constructed of materials to prevent the migration of any
constituent through the liner during that period. For the preceding sentence, a
lower liner satisfies the construction requirement if it is constructed of at
least a 5-foot thick layer of recompacted clay or other natural material with a
permeability of no more than 1 X 10(-7) centimeter
per second.
b) A surface
impoundment must be designed, constructed, maintained, and operated to prevent
overtopping resulting from normal or abnormal operations; overfilling; wind and
wave action; rainfall; run-on; malfunctions of level controllers, alarms, and
other equipment; and human error.
c) A surface impoundment must have dikes that
are designed, constructed, and maintained with sufficient structural integrity
to prevent massive failure of the dikes. In ensuring structural integrity, it
must not be presumed that the liner system will function without leakage during
the active life of the surface impoundment.
d) The owner or operator must maintain the
following items:
1) Records describing the
contents of the impoundment; and
2)
A map showing the exact location and dimensions of the impoundment, including
depth with respect to permanently surveyed benchmarks.
Notes
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