Sec. 8.
(a) The
following definitions apply throughout this section:
(1) "Annual throughput" means the amount of
material that is being processed through the plant in a calendar
year.
(2) "Crushed stone" means any
composition of limestone, granite, traprock, or any other hard, sound rock that
is produced by blasting and then crushing.
(3) "Wet process in a pit and quarry
operation" means the operation in which the aggregate deposit being processed
has:
(A) been mined from beneath bodies of
water, such as:
(i) rivers;
(ii) estuaries;
(iii) lakes; or
(iv) oceans; or
(B) a free moisture content of one and
five-tenths percent (1.5%) by weight or greater.
The aggregate infeed that undergoes such process shall
maintain a minimum of one and five-tenths percent (1.5%) by weight throughout
the production process.
(4) "Wet suppression systems" means dust
control devices in a pit and quarry operation that use a pressurized liquid,
either water or water with a small amount of surfactant, for the controlled
reduction or elimination of airborne dust or the suppression of such dust at
its source.
(b) Any
crushed stone processing plant may elect to be subject to this section by
complying with the requirements of section 1 of this rule and meeting the
following conditions, outlined under subdivisions (1) through (4), as
applicable, and subdivision (5):
(1) Crushed
stone processing plants that do not emit particulate matter in excess of or
equal to twenty-five (25) tons per year, including fugitive particulate
emissions, utilizing at most four (4) crushers, seven (7) screens, and a
conveying operation shall limit the annual throughput to less than four hundred
thousand (400,000) tons per year.
(2) Crushed stone processing plants that do
not emit particulate matter in excess of or equal to twenty-five (25) tons,
excluding fugitive particulate emissions, utilizing at most six (6) crushers,
thirteen (13) screens, and a conveying operation shall limit the annual
throughput to less than one million (1,000,000) tons per year.
(3) Crushed stone processing plants that do
not emit particulate matter in excess of or equal to one hundred (100) tons per
year, excluding fugitive particulate emissions, utilizing at most nine (9)
crushers, seventeen (17) screens, and a conveying operation shall comply with
the following provisions:
(A) The annual
throughput shall not exceed three million (3,000,000) tons per year.
(B) Each source under this subdivision shall
pay an annual fee in accordance with 326 IAC 2-1.1-7(g)(3).
(4) Crushed stone processing
plants that meet the specific restrictions and conditions in subdivision (1),
(2), or (3) shall also comply with the following provisions:
(A) Each source described by subdivisions (1)
and (2) shall maintain annual throughput records at the site on a calendar year
basis.
(B) Each source described by
subdivision (3) shall maintain at the site throughput records for the previous
twelve (12) months on a monthly rolling total.
(C) The crushing, screening, and conveying
operations shall be equipped with dust collectors, unless a wet process or
continuous wet suppression system is used, to comply with clause (E).
(D) All manufacturing equipment that
generates particulate emissions and control devices shall be operated and
maintained at all times of plant operation in such a manner as to meet the
requirements of this rule.
(E)
Visible emissions from the screening and conveying operations shall not exceed
an average of ten percent (10%) opacity in twenty-four (24) consecutive
readings in a six (6) minute period, and visible emissions from the crushing
operation shall not exceed an average of fifteen percent (15%) opacity in
twenty-four (24) consecutive readings in a six (6) minute period. Compliance
with these limitations shall be determined by 40 CFR 60, Appendix A, Method
9*.
(F) Fugitive particulate
emissions shall be controlled by applying water on storage piles and unpaved
roadways on an as needed basis such that the following visible emission
conditions are met:
(i) Visible emissions
from storage piles shall not exceed twenty percent (20%) in twenty-four (24)
consecutive readings in a six (6) minute period. This limitation shall not
apply during periods when application of control measures are ineffective or
unreasonable due to sustained high wind speeds. The opacity shall be determined
using 40 CFR 60, Appendix A, Method 9*, except that the opacity shall be
observed at approximately four (4) feet from the surface at the point of
maximum opacity. The observer shall stand at least fifteen (15) feet, but not
more than one-fourth (1/4) mile, from the plume and at approximately right
angles to the plume.
(ii) Visible
emissions from unpaved roadways shall not exceed an average instantaneous
opacity of twenty percent (20%). Average instantaneous opacity shall be the
average of twelve (12) instantaneous opacity readings, taken for four (4)
vehicle passes, consisting of three (3) opacity readings for each vehicle pass.
The three (3) opacity readings for each vehicle pass shall be taken as follows:
(AA) The first shall be taken at the time of
emission generation.
(BB) The
second shall be taken five (5) seconds after the first.
(CC) The third shall be taken five (5)
seconds after the second or ten (10) seconds after the first.
The three (3) readings shall be taken at approximately four
(4) feet from the surface at the point of maximum opacity. The observer shall
stand at least fifteen (15) feet, but not more than one-fourth (1/4) mile, from
the plume and at approximately right angles to the plume.
(G) Fugitive
particulate emissions at a crushed stone plant shall not escape beyond the
property line or boundaries of the property, right-of-way, or easement on which
the source is located, pursuant to 326 IAC 6-4.
(H) The source shall comply with 40 CFR
60.670, Standards of Performance for Nonmetallic Mineral Processing Plants*, if
applicable.
(5) Request
a source specific operating agreement under this section.
*These documents are incorporated by reference. Copies may be
obtained from the Government Printing Office, 732 North Capitol Street NW,
Washington, D.C. 20401 or are available for review and copying at the Indiana
Department of Environmental Management, Office of Air Quality, Indiana
Government Center North, Tenth Floor, 100 North Senate Avenue, Indianapolis,
Indiana 46204.