Current through Register Vol. 48, No. 12, March 22, 2024
a)
Each application shall include a general plan and a detailed design plan for
each proposed siltation structure, water impoundment, and coal processing waste
bank, dam, or embankment within the proposed permit area.
1) Each general plan shall:
A) Be prepared by, or under the direction of,
and sealed by a qualified registered professional engineer licensed under the
Professional Engineering Practice Act of 1989 [225 ILCS 325 ], with assistance
from experts in related fields such as land surveying, geology and landscape
architecture;
B) Contain a
description, map, and cross-section of the structure and its
location;
C) Contain preliminary
hydrologic and geologic information required to assess the hydrologic impact of
the structure;
D) Contain a survey
describing the potential effect on the structure from subsidence of the
subsurface strata resulting from past underground mining operations if
underground mining has occurred; and
E) Contain a certification statement which
includes a schedule setting forth the dates that any detailed design plans for
structures, that are not submitted with the general plan, will be submitted to
the Department. The Department shall have approved, in writing, the detailed
design plan for a structure before construction of the structure
begins.
2) Impoundments
meeting the Class B or C criteria for dams in the U.S. Department of
Agriculture, Soil Conservation Service Technical Release No. 60 (210-VI-TR60,
Oct. 1985), "Earth Dams and Resevoirs," shall comply with the requirements of
this Section for structures that meet or exceed the size or other criteria of
the Mine Safety and Health Administration (MSHA). Each detailed design plan for
a structure that meets or exceeds the size or other criteria of MSHA,
30
CFR 77.216(a), shall:
A) Be prepared by, or under the direction of,
and sealed by a qualified registered professional engineer licensed under the
Professional Engineering Practice Act of 1989 [225 ILCS 325] with assistance
from experts in related fields such as geology, land surveying and landscape
architecture;
B) Include any
geotechnical investigation design and construction requirements for the
structure;
C) Describe the
operation and maintenance requirements for each structure; and
D) Describe the timetable and plans to remove
each structure, if appropriate.
3) Each detailed design plan for a structure
not included in subsection (a)(2) above shall:
A) Be prepared by, or under the direction of,
and sealed by a qualified registered professional engineer licensed under the
Professional Engineering Practice Act of 1989 [225 ILCS 325];
B) Include any design and construction
requirements for the structure, including any required geotechnical
information;
C) Describe the
operation and maintenance requirements for each structure; and
D) Describe the timetable and plans to remove
each structure, if appropriate.
b) Siltation structures. Siltation structures
shall be designed in compliance with the requirements of 62 Ill. Adm. Code
1816.46.
Any sedimentation pond or earthen structure which will remain on the proposed
permit area as a permanent water impoundment shall also be designed to comply
with the requirements of 62 Ill. Adm. Code
1816.49. Each plan
shall, at minimum, comply with the requirements of MSHA,
30
CFR 77.216-1 and
77.216-2.
c) Permanent and temporary impoundments.
Permanent and temporary impoundments shall be designed to comply with the
requirements of 62 Ill. Adm. Code 1816.49. Each plan shall comply with the
requirements of MSHA,
30
CFR 77.216-1 and
77.216-2.
d) Coal processing waste banks. Coal
processing waste banks shall be designed to comply with the requirements of 62
Ill. Adm. Code
1816.81
through
1816.84.
e) Coal processing waste dams and
embankments. Coal processing waste dams and embankments shall be designed to
comply with the requirements of 62 Ill. Adm. Code
1816.81
through 1816.84. Each plan shall comply with the requirements of MSHA,
30
CFR 77.216-1 and
77.216-2,
and shall contain the results of a geotechnical investigation of the proposed
dam or embankment foundation area, to determine the structural competence of
the foundation which will support the proposed dam or embankment structure and
the impounded material. The geotechnical investigation shall be planned and
supervised by an engineer or engineering geologist, according to the following:
1) The number, location, and depth of borings
and test pits shall be determined using current engineering practice for the
size of the dam or embankment, quantity of material to be impounded, and
subsurface conditions;
2) The
character of the overburden and bedrock, the proposed abutment sites, and any
adverse geotechnical conditions which may affect the particular dam,
embankment, or reservoir site shall be considered;
3) All springs, seepage, and ground water
flow observed or anticipated during wet periods in the area of the proposed dam
or embankment shall be identified on each plan; and
4) Consideration shall be given to the
possibility of mudflow, rock-debris falls, or other landslides into the dam,
embankment, or impounded material.
f) If the structure meets the Class B or C
criteria for dams in TR-60 or meets the size or other criteria of
30
CFR 77.216(a), each plan
under subsections (b), (c), and (e) shall include a stability analysis of each
structure. The stability analysis shall include, but not be limited to,
strength parameters, pore pressure, and long-term seepage conditions. The plan
shall also contain a description of each engineering design assumption and
calculation with a discussion of each alternative considered in selecting the
specific design parameters and construction methods.
g) Submission of MSHA certification documents
for a detailed design plan under this Section shall satisfy the requirements of
this Section, insofar as the MSHA informational and design standard
requirements are duplicative of the requirements of this Section.
