Indiana Administrative Code › Title 326 - AIR POLLUTION CONTROL DIVISION › Article 4 - BURNING REGULATIONS › Rule 1 - Open Burning › Section 1-7 - Air curtain destructors; approval conditions

Current through July 10, 2024
Authority: IC 13-15-2-1; IC 13-17-3-4
Affected: IC 4-21.5; IC 13-12; IC 13-17-9
Sec. 7.
(a) To obtain
				an air curtain destructor letter of approval, the owner or operator shall
				ensure that installation and operation of the air curtain destructor will
				comply with subdivisions (1) through (13). Burning shall be terminated
				immediately at any air curtain destructor site that does not comply with this
				section and the following requirements:
(1)
				Only untreated wood products shall be burned, except for minimal amounts of
				uncontaminated petroleum products that may be used for ignition.
(2) Burning shall not be conducted during
				unfavorable meteorological conditions, such as high winds or air stagnation or
				when a pollution alert or ozone action day has been declared.
(3) The air curtain destructor shall not be
				operated prior to one (1) hour after official sunrise, the fire shall not be
				fed after two (2) hours before official sunset, and the fire must be completely
				extinguished by official sunset.
(4) An air curtain destructor site shall be
				located not less than two hundred fifty (250) feet from any private residence,
				public roadway, power line, or structure, and not less than five hundred (500)
				feet from any pipeline or fuel storage area.
(5) An air curtain destructor site shall not
				be located within one thousand (1,000) feet of a solid waste land disposal
				facility as defined in 329 IAC 10-2-176 or transfer station as defined in 329
				IAC 11-2-4Sec. 7.
(6) An air
				curtain destructor shall not be permanently located at any site, except in
				accordance with a valid permit under 326 IAC 2.
(7) An air curtain destructor shall be
				attended at all times while burning and until combustion is complete. Adequate
				firefighting equipment shall be maintained at an air curtain destructor site at
				all times during operation.
(8)
				Burning shall not create or contribute to:
(A)
				an air pollution problem;
(B) a
				nuisance; or
(C) a fire
				hazard.
(9) Material
				being loaded into the earthen pit or refractory-lined box shall be picked up
				and dropped into the pit or box, and at no time shall the material protrude
				through the curtain of air while burning.
(10) The approval letter shall be made
				available at the burning site to state or local officials upon
				request.
(11) The owner or operator
				of an air curtain destructor shall provide twenty-four (24) hour notification
				in advance to the local fire department and the local health department of the
				dates and times that the air curtain destructor will be in operation.
(12) The following shall apply to an air
				curtain destructor using an earthen pit:
(A)
				An air curtain destructor and earthen pit shall be maintained and operated
				according to the manufacturer's specifications and recommendations.
(B) The fan blades of the air curtain
				destructor shall be regularly cleaned to reduce buildup of dirt and
				debris.
(C) All canisters must be
				properly aligned, connected, and maintained so as to prevent leaks between
				adjacent canisters.
(D) The nozzles
				must be maintained in good working condition. The minimum average velocity at
				the nozzle must be nine thousand fifty (9,050) feet per minute, and the air
				flow at the nozzle must be a minimum of seven hundred fifty (750) cubic feet
				per minute per foot of length.
(E)
				The engine running the air curtain destructor fan must be maintained in proper
				working condition.
(F) The width of
				the earthen pit shall not extend beyond the length of the nozzle
				action.
(G) The distance from the
				air curtain destructor to the opposite wall of the earthen pit shall not exceed
				ten (10) feet.
(H) The depth of the
				earthen pit shall be of such distance to allow all burning material to be below
				the curtain of air created by the air curtain destructor.
(I) All nozzles shall be aligned and directed
				toward the opposite wall so that the air strikes the opposite wall at least
				three (3) feet below the grade upon which the air curtain destructor is located
				so that the air tumbles in the earthen pit.
(J) The air curtain destructor shall not be
				at a higher elevation than the elevation of the opposite wall.
(K) The earthen pit shall be enclosed on four
				(4) sides, and the walls shall be perpendicular to level ground.
(L) At least one (1) foot of dirt must be
				placed over the ashes in the earthen pit by official sunset.
(13) The following shall apply to
				a portable air curtain destructor using a refractory-lined box:
(A) An air curtain destructor,
				refractory-lined box, and associated equipment shall be maintained and operated
				according to the manufacturer's specifications and recommendations.
(B) All nozzles shall be aligned and directed
				toward the opposite wall so that the air strikes the opposite wall below the
				top of the opposite wall.
(C)
				Access to the refractory-lined box must be restricted by official sunset each
				day.
(D) Opacity shall not exceed
				ten percent (10%), except during times of startup. Measurement of opacity shall
				be conducted in accordance with 40 CFR 60, Appendix A, Method 9.*
(E) During times of startup, opacity shall
				not exceed thirty-five percent (35%) and startup periods shall not exceed
				thirty (30) minutes.