25 Pa. Code § 90.50 - Design criteria: groundwater and surface water protection system
(a) The application
shall include a description of the system that will be installed to prevent
adverse impacts to groundwater and surface water. The description shall include
maps, plans and other information necessary to evaluate the design of the
system.
(b) The application shall
include a description of the system that will be installed to prevent
precipitation from coming into contact with the coal refuse. The description
shall include maps, plans and other information necessary to evaluate the
design of the system. The coal refuse disposal operation shall be designed in
phases to minimize the amount of time the entire coal refuse area is exposed to
precipitation prior to the installation of the system to prevent precipitation
from contacting the coal refuse. The application shall describe the design of
the system for preventing precipitation from contacting coal refuse and how the
system will be installed in accordance with the following:
(1) During routine coal refuse disposal as
phases of the coal refuse disposal area reach capacity.
(1.1) As specified in the permit.
(2) During periods of temporary cessation as
directed under §
90.167(b)
(relating to cessation of operations: temporary).
(3) When the operation permanently
ceases.
(c) The
Department's technical guidance Document Number 563-2112-656, titled Liners and
Caps for Coal Refuse Disposal Areas, shall be used as guidance for designing
coal refuse disposal sites incorporating earthen, admixed or synthetic liners
or caps for preventing adverse impacts to groundwater and surface water and for
preventing precipitation from contacting coal refuse.
(d) The application shall include a
description of the measures to be taken to ensure the long-term functionality
of the systems described in subsections (a) and (b). The description shall
address the site's susceptibility to mine subsidence and the potential impacts
of mine subsidence on the systems described in subsections (a) and (b). The
description shall also address the potential for deterioration of components of
the systems described in subsections (a) and (b) due to other physical or
chemical processes including but not limited to attack from sulfate-laden or
acidic groundwater and/or leachate.
Notes
The provisions for this § 90.50 amended under section 5 of The Clean Streams Law (35 P.S. § 691.5), section 4.2(a) of the Surface Mining Conservation and Reclamation Act (52 P.S. § 1396.4b(a)), section 3.2 of the Coal Refuse Disposal Control Act (52 P.S. § 30.53b); and section 1920-A of The Administrative Code of 1929 (71 P.S. § 510-20).
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