Section 326IAC6.5-1-2. Particulate emission limitations; modification by commissioner

   (a) Particulate matter emissions from facilities constructed after applicable dates in subsections (c) and (d) or not limited by subsection (b), (e), (f), (g), or (h) shall not exceed seven-hundredths (0.07) gram per dry standard cubic meter (g/dscm) (three-hundredths (0.03) grain per dry standard cubic foot (dscf)).

  (b) Fuel combustion steam generators are limited to the following particulate matter emissions limitations:

(1) For solid fuel-fired generators that have:

(A) greater than sixty-three million (63,000,000) kilocalories (kcal) per hour heat input (two hundred fifty million (250,000,000) Btu), a particulate matter content of not greater than eighteen-hundredths (0.18) gram per million calories (one-tenth (0.10) pound per million Btu);

(B) equal to or greater than six million three hundred thousand (6,300,000) kcal per hour heat input, but less than or equal to sixty-three million (63,000,000) kcal per hour heat input (equal to or greater than twenty-five million (25,000,000) Btu, but less than or equal to two hundred fifty million (250,000,000) Btu), a particulate matter content of not greater than sixty-three hundredths (0.63) gram per million calories (thirty-five hundredths (0.35) pound per million Btu); or

(C) less than six million three hundred thousand (6,300,000) kcal per hour heat input (twenty-five million (25,000,000) Btu), a particulate matter content of not greater than one and eight-hundredths (1.08) grams per million calories (six-tenths (0.6) pound per million Btu).

(2) For all liquid fuel-fired steam generators, a particulate matter content of not greater than twenty-seven hundredths (0.27) gram per million kcal (fifteen-hundredths (0.15) pound per million Btu).

(3) For all gaseous fuel-fired steam generators, a particulate matter content of not greater than one-hundredth (0.01) grain per dry standard cubic foot (dscf).

  (c) Asphalt concrete plants are limited to particulate matter emissions of not greater than two hundred thirty (230) mg per dscm (one-tenth (0.1) grain per dscf), if in existence on or before June 11, 1973, and consisting of, but not limited to:

(1) driers;

(2) systems for:

(A) screening, handling, storing, and weighing hot aggregate;

(B) loading, transferring, and storing mineral filler; and

(C) mixing asphalt concrete; and

(3) the loading, transfer, and storage systems associated with emission control systems.

  (d) The following are the requirements for grain elevators:

(1) For grain elevators that began construction or modification before January 13, 1977, any grain storage elevator located at any grain processing source that has a permanent grain storage capacity of thirty-five thousand two hundred (35,200) cubic meters (one million (1,000,000) U.S. bushels) or more, and any grain terminal elevator that has a permanent grain storage capacity of eighty-eight thousand one hundred (88,100) cubic meters (two million five hundred thousand (2,500,000) U.S. bushels) or more shall be limited to particulate matter emissions of not greater than seven-hundredths (0.07) g/dscm (three-hundredths (0.03) grain per dscf).

(2) All grain elevators subject to this article shall provide for housekeeping and maintenance procedures that minimize the opportunity for particulate matter to become airborne and leave the property, such as the following:

(A) Housekeeping practices shall be conducted as follows:

(i) Areas to be swept and maintained shall include, at a minimum, the following:

(AA) General grounds, yard, and other open areas.

(BB) Floors, decks, hopper areas, loading areas, dust collectors, and all areas of dust or waste concentrations.

(CC) Grain driers with respect to accumulated particulate matter.

(ii) Cleanings and other collected waste material shall be handled and disposed of so that the area does not generate fugitive dust.

(iii) Dust from driveways, access roads, and other areas of travel shall be controlled.

(iv) Accidental spills and other accumulations shall be cleaned up as soon as possible but no later than completion of the day's operation.

(B) Equipment maintenance shall consist of procedures that eliminate or minimize emissions from equipment or a system caused by the following:

(i) Malfunctions.

(ii) Breakdowns.

(iii) Improper adjustment.

(iv) Operating above the rated or designed capacity.

(v) Not following designed operating specifications.

(vi) Lack of good preventive maintenance care.

(vii) Lack of critical and proper spare replacement parts on hand.

(viii) Lack of properly trained and experienced personnel.

(C) Emissions from the affected areas, operations, equipment, and systems shall not exceed twenty percent (20%) opacity as determined under 326 IAC 5-1.

  (e) Gray iron foundries shall be limited to the following:

(1) Any cupola of a gray iron foundry shall be limited to particulate matter emissions of not greater than thirty-four hundredths (0.34) g/dscm (fifteen-hundredths (0.15) grain/dscf).

(2) Any melting process, excluding any cupola, of a gray iron foundry shall be limited to particulate matter emissions of not greater than sixteen-hundredths (0.16) g/dscm (seven-hundredths (0.07) grain/dscf).

  (f) Glass container manufacturing furnace operations shall be limited to particulate matter emissions of not greater than one (1.0) gram per two (2.0) kilograms of process material (one (1.0) pound per ton).

  (g) Mineral aggregate operations, where the process is totally enclosed, shall comply with the requirements in subsection (a). In addition, 326 IAC 2, 326 IAC 5-1, and 326 IAC 6-4 shall apply in all cases to mineral aggregate operations.

  (h) Surface coating, reinforced plastic composites fabricating manufacturing processes, and graphic arts manufacturing processes shall be controlled by a dry particulate filter, waterwash, or an equivalent control device, subject to the following:

(1) The source shall operate the control device in accordance with manufacturer's specifications.

(2) If overspray is visibly detected at the exhaust or accumulates on the ground, the source shall inspect the control device and do either of the following no later than four (4) hours after the observation:

(A) Repair the control device so that no overspray is visibly detectable at the exhaust or accumulates on the ground.

(B) Operate equipment so that no overspray is visibly detectable at the exhaust or accumulates on the ground.

If overspray is visibly detected, the source shall maintain a record of the action taken as a result of the inspection, any repairs of the control device, or change in operations, so that overspray is not visibly detectable at the exhaust or accumulates on the ground. These records must be maintained for five (5) years.

(3) A source is exempt from subdivision (2) if it operates according to a valid permit under:

(A) 326 IAC 2-7;

(B) 326 IAC 2-8; or

(C) 326 IAC 2-9.

(4) Surface coating manufacturing processes that use less than five (5) gallons of coating per day are exempt from the work practice standards in subdivisions (1) and (2). At any time the coating application rate increases to greater than five (5) gallons per day, a control device must be in place. A manufacturing process that is subject to this subsection shall remain subject to it even if there is a subsequent decrease in gallons of coating used.

  (i) Based on modeling analyses available to the commissioner, where it is determined that the limitations in subsections (a) through (g) are not adequate to achieve and maintain the ambient particulate air quality standards established by 326 IAC 1-3, the limitations set forth in this section may be changed for facilities:

(1) having a significant impact on air quality and located in areas where the ambient particulate standard either is not attained or will not be maintained without emission limitations in addition to those set forth in this rule; and

(2) required to comply with the prevention of significant deterioration requirements of 326 IAC 2.

These limitations shall be established in construction and operation permits issued in accordance with the procedures set forth in 326 IAC 2.

  (j) If the emission limitations established in subsections (a) through (g) for facilities that were operating or under construction on August 7, 1980, impose a severe economic hardship on any individual source, then the source may petition the commissioner for reconsideration of the limitations. If the source can demonstrate to the commissioner's satisfaction that a severe hardship will be caused if the applicable requirements in this section are enforced, then less restrictive emission limitations may be established by the commissioner, provided the less restrictive limitations will guarantee the attainment and maintenance of the particulate ambient air quality standards established by 326 IAC 1-3. (Air Pollution Control Division; 326 IAC 6.5-1-2; filed Aug 10, 2005, 1:00 p.m.: 28 IR 3455; filed Mar 21, 2012, 11:27 a.m.: 20120418-IR-326070438FRA)