25 Pa. Code § 88.58 - Disposal of excess spoil
(a) The
reclamation plan shall contain a description, including appropriate maps and
cross sections, of the proposed disposal site and design of the spoil disposal
structure. The description shall include the geotechnical investigation,
design, construction, operation, maintenance and removal, if appropriate, of
the site and structures.
(b) When
excess spoil will not be used to reclaim nearby abandoned surface mines, the
geotechnical investigation of the proposed disposal site shall include the
following:
(1) The character of bedrock and
any adverse geologic condition in the disposal area.
(2) A survey identifying all springs, seepage
and groundwater flow observed or anticipated during wet periods in the area of
the disposal site.
(3) A survey of
the potential effects of subsidence of the subsurface strata due to past and
future mining operations.
(4) A
stability analysis, including, but not limited to, strength parameters and
long-term seepage conditions. These data shall be accompanied by a description
of all engineering design assumptions and calculations and the alternatives
considered in selecting the specific design specifications and
methods.
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