25 Pa. Code § 285.123 - Impoundments-general
A person or municipality storing municipal waste in a surface impoundment shall:
(1) Comply
with Chapter 105 (relating to dam safety and waterway management).
(2) Design and maintain the impoundment to
prevent the dispersal of municipal waste by wind and water erosion, and to
prevent odors.
(3) Design and
maintain sufficient freeboard to prevent overtopping. There shall be at least 2
feet of freeboard unless otherwise approved by the Department, in
writing.
(4) Construct and maintain
a protective cover sufficient to minimize wind and water erosion and preserve
structural integrity, including, but not limited to, suitable vegetation, rock
riprap or nonerodible material.
(5)
Design and maintain sufficient structural integrity to prevent
failure.
(6) Design and maintain
dikes or berms so that the outside slope does not exceed 33% unless otherwise
approved by the Department, in writing.
(7) Design and maintain structures around
impoundments sufficient to prevent surface runoff from entering the
impoundment, based on the maximum surface runoff from a 25-year, 24-hour
precipitation event.
(8) Design and
maintain dikes or berms to be free of burrowing mammals and plants with root
systems capable of displacing earthen materials upon which the structural
integrity of the dikes or berms is dependent.
(9) For leachate storage:
(i) Install and maintain a liner that meets
the requirements of Chapter 273 (relating to municipal waste
landfills).
(ii) Design, install
and operate a groundwater monitoring system that meets the requirements of
Chapter 273.
Notes
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