Ill. Admin. Code tit. 35, § 506.302 - Site Investigation
a) The
owner or operator of a livestock waste handling facility must conduct a site
investigation in compliance with this Section to determine the following:
1) Whether aquifer material is considered
present (or not present) within 5 feet of the planned bottom of the livestock
waste handling facility;
2) Whether
the proposed facility is to be located within the floodway or flood fringe of a
100-year floodplain; and
3) Whether
the proposed facility is to be located within a karst area or within 400 feet
of a natural depression in a karst area.
b) Except for facilities that are proposed to
be located within an area designated as "Sink hole areas" on "Karst Terrains
and Carbonate Rocks of Illinois", IDNR-ISGS Illinois Map 8, the owner or
operator must obtain soil samples from within the final livestock waste
handling facility area or within 20 feet of the livestock waste handling
facility boundaries. The sampling must be performed to determine the presence
of aquifer material or karstified carbonate bedrock as follows:
1) The soil sampling must begin at the soil
surface and extend to a depth that includes a minimum of 5 feet below the
planned bottom of the livestock waste handling facility native soil or to
bedrock;
2) If bedrock is
encountered, additional soil samplings may be necessary to verify the presence
of aquifer material or karstified carbonate bedrock;
3) Continuous samples must be recovered from
each soil sampling; and
4) Upon
completion, any boring used for sampling must be properly abandoned and sealed
under the Illinois Water Well Construction Code at 77 Ill. Adm. Code
920.120. Any excavation used for
sampling that is within the construction boundaries of the livestock management
facility or livestock waste handling facility must be restored by adding soil
compacted in lifts no greater than 6 inches.
c) If the Department determines that
additional soil samplings are necessary to ensure the protection of the
groundwater, the surface water, or the structural integrity of the livestock
waste handling facility, the Department must require additional soil
samplings.
d) As an alternative to
performing the soil sampling required under subsection (b) or (c), the owner or
operator of the livestock waste handling facility may propose to the Department
to use alternative information sources. The Department must evaluate the
proposal; determine whether the alternative information sources will result in
a site investigation that will be at least as protective of the groundwater,
the surface water, and the structural integrity of the livestock waste handling
facility as would have resulted from data resulting from soil borings; and
notify the owner or operator of the Department's finding.
e) Despite the other requirements of this
Subpart, if aquifer material is located above or within 5 feet of the lowest
point of the livestock waste handling facility, the design of the facility must
comply with Section 506.310.
f) Despite the other requirements of this
Subpart, if the site investigation determines that the livestock waste handling
facility is to be located in the flood fringe of a 100-year floodplain, the
design of the facility must comply with Section
506.311.
g) If the proposed livestock waste handling
facility is to be located within an area designated as "Sink hole areas" on
"Karst Terrains and Carbonate Rocks of Illinois", IDNR-ISGS Illinois Map 8 or
if the results of the soil sampling conducted under Section
506.302(b)
indicate the proposed livestock waste handling facility is to be located in a
karst area, the following requirements must be met:
1) The Department must conduct a visual
inspection of the surrounding area to determine the presence of natural
depressions during the pre-construction site inspection as required under 8
Ill. Adm. Code 900.505(a).
Construction must not occur within 400 feet of a natural depression in a karst
area;
2) The owner or operator must
perform one or more soil borings that must be located within the final
livestock waste handling facility area or within 20 feet of the livestock waste
handling facility boundaries to determine the presence of voids. The boring
must begin at the soil surface and extend to a depth that includes a minimum of
20 feet below the planned bottom of the livestock waste handling
facility;
3) Continuous samples
must be recovered from each boring;
4) The Licensed Professional Engineer,
Licensed Professional Geologist, or USDA-NRCS representative designated to
perform such functions must evaluate the results of the soil boring. If a void
of 1 foot or greater in vertical distance is discovered from the soil boring
performed under subsection (g)(2), the following requirements must be met:
A) The Department may require additional
borings to determine the extent of the void;
B) Despite the other requirements of this
Subpart, the owner or operator must submit to the Department a plan for the
design of the facility that must include the additional design requirements in
Section 506.312 and must include any
additional design requirements necessary by the Licensed Professional Engineer;
and
C) The Department must review
and approve the plan required under subsection (g)(4)(B) before construction.
The Department may also require additional design criteria before the plan is
approved and construction may begin.
If no voids of 1 foot or greater in vertical distance are discovered from the soil boring performed, the design must include the additional requirements in Section 506.312.
5) Upon completion of the borings required
under subsection (g), the borings must be properly abandoned and sealed under
the Illinois Water Well Construction Code at 77 Ill. Adm. Code
920.120.
h) The site
investigation in compliance with subsections (b), (c), (d), (e), (f), and (g)
must be conducted under the direction of a Licensed Professional Engineer, a
Licensed Professional Geologist, or a representative of the USDA-NRCS
designated to perform such functions.
Notes
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