Iowa Admin. Code r. 567-23.4 - Specific processes
(1)
General. The provisions of this rule shall not apply to those
facilities for which performance standards are specified in 23.1(2). The
emission standards specified in this rule shall apply and those specified in
23.3(2)"a" and 23.3(2)"b" shall not apply to
each process of the types listed in the following subrules, except as provided
below.
Exception: Whenever the director determines that a
(2)
Asphalt batching plants. No person shall cause, allow or
permit the operation of an asphalt batching plant in a manner such that the
particulate matter discharged to the atmosphere exceeds 0.15 grain per standard
cubic foot of exhaust gas.
(3)
Cement kilns. Cement kilns shall be equipped with air
pollution control devices to reduce the particulate matter in the gas
discharged to the atmosphere to no more than 0.3 percent of the particulate
matter entering the air pollution control device. Regardless of the degree of
efficiency of the air pollution control device, particulate matter discharged
from such kilns shall not exceed 0.1 grain per standard cubic foot of exhaust
gas.
(4)
Cupolas for
metallurgical melting. The emissions of particulate matter from all
new foundry cupolas, and from all existing foundry cupolas with a process
weight rate in excess of 20,000 pounds per hour, shall not exceed the amount
specified in 23.3(2)"a," except as provided in 567-Chapter 21.
The emissions of
|
|
Allowable emission (lb/hr) |
|
1,000 |
3.05 |
|
2,000 |
4.70 |
|
3,000 |
6.35 |
|
4,000 |
8.00 |
|
5,000 |
9.58 |
|
6,000 |
11.30 |
|
7,000 |
12.90 |
|
8,000 |
14.30 |
|
9,000 |
15.50 |
|
10,000 |
16.65 |
|
12,000 |
18.70 |
|
16,000 |
21.60 |
|
18,000 |
23.40 |
|
20,000 |
25.10 |
(5)
Electric furnaces for metallurgical melting. The emissions of
particulate matter to the atmosphere from electric furnaces used for
metallurgical melting shall not exceed 0.1 grain per standard cubic foot of
exhaust gas.
(6)
Sand
handling and surface finishing operations in metal processing. This
subrule shall apply to any new foundry or metal processing operation not
properly termed a combustion, melting, baking or pouring operation. For
purposes of this subrule, a new process is any process that has not started
operation, or the construction of which has not been commenced, or the
components of which have not been ordered or contracts for the construction of
which have not been let on August 1, 1977. No person shall allow, cause or
permit the operation of any equipment designed for sand shakeout, mulling,
molding, cleaning, preparation, reclamation or rejuvenation or any equipment
for abrasive cleaning, shot blasting, grinding, cutting, sawing or buffing in
such a manner that particulate matter discharged from any stack exceeds 0.05
grains per dry standard cubic foot of exhaust gas, regardless of the types and
number of operations that discharge from the stack .
(7)
Grain handling and processing
plants. The owner or operator of equipment at a permanent installation
for the handling or processing of grain, grain products and grain by-products
shall not cause, allow or permit the particulate matter discharged to the
atmosphere to exceed 0.1 grain per dry standard cubic foot of exhaust gas,
except as follows:
a. The particulate matter
discharged to the atmosphere from a grain bin vent at a country grain elevator ,
as "country grain elevator " is defined in 567-subrule 22.10(1), shall not
exceed 1.0 grain per dry standard cubic foot of exhaust gas.
b. The particulate matter discharged to the
atmosphere from a grain bin vent that was constructed, modified or
reconstructed before March 31, 2008, at a country grain terminal elevator, as
"country grain terminal elevator" is defined in 567-subrule 22.10(1), or at a
grain terminal elevator, as "grain terminal elevator" is defined in 567-subrule
22.10(1), shall not exceed 1.0 grain per dry standard cubic foot of exhaust
gas.
c. The particulate matter
discharged to the atmosphere from a grain bin vent that is constructed or
reconstructed on or after March 31, 2008, at a country grain terminal elevator,
as "country grain terminal elevator" is defined in 567-subrule 22.10(1), or at
a grain terminal elevator, as "grain terminal elevator" is defined in
567-subrule 22.10(1), shall not exceed 0.1 grain per dry standard cubic foot of
exhaust gas.
(8)
Lime kilns. No person shall cause, allow or permit the
operation of a kiln for the processing of limestone such that the particulate
matter in the gas discharged to the atmosphere exceeds 0.1 grain per standard
cubic foot of exhaust gas.
(9)
Meat smokehouses. No person shall cause, allow or permit the
operation of a meat smokehouse or a group of meat smokehouses that consume more
than 10 pounds of wood, sawdust or other material per hour such that the
particulate matter discharged to the atmosphere exceeds 0.2 grain per standard
cubic foot of exhaust gas.
(10)
Phosphate processing plants.
a
. and b. Reserved.
c.
Nitrophosphate manufacture. No person shall allow, cause or permit the
operation of equipment for the manufacture of nitrophosphate in a manner that
produces more than 0.06 pound of fluoride per ton of phosphorus pentoxide or
equivalent input.
d. No person
shall allow, cause or permit the operation of equipment for the processing of
phosphate ore, rock or other phosphatic material (other than equipment used for
the manufacture of phosphoric acid, diammonium phosphate or nitrophosphate) in
a manner that the unit emissions of fluoride exceed 0.4 pound of fluoride per
ton of phosphorous pentoxide or its equivalent input.
e. Notwithstanding
23.4(10)"c" and "d," no person shall allow,
cause or permit the operation of equipment for the processing of phosphorous
ore, rock or other phosphatic material, including but not limited to phosphoric
acid, in a manner that emissions of fluorides exceed 100 pounds per
day.
f. "Fluoride" means elemental
fluorine and all fluoride compounds as measured by reference methods specified
in Appendix A to 40 CFR Part 60 as amended through March 12, 1996.
g. Calculation. The allowable total emission
of fluoride shall be calculated by multiplying the unit emission specified
above by the expressed design production capacity of the process
equipment .
(11)
Portland cement concrete batching plants. No person shall
cause, allow or permit the operation of a Portland cement concrete batching
plant such that the particulate matter discharged to the atmosphere exceeds 0.1
grain per standard cubic foot of exhaust gas.
(12)
Incinerators. A person
shall not cause, allow or permit the operation of an incinerator unless
provided with appropriate control of emissions of particulate matter and
visible air contaminants.
a.
Particulate matter . A person shall not cause, allow or permit
the operation of an incinerator with a rated refuse burning capacity of 1,000
or more pounds per hour in a manner such that the particulate matter discharged
to the atmosphere exceeds 0.2 grain per standard cubic foot of exhaust gas
adjusted to 12 percent carbon dioxide.
A person shall not cause, allow or permit the operation of an
b.
Visible emissions. A person shall not allow, cause or permit
the operation of an incinerator in a manner such that it produces visible air
contaminants in excess of 40 percent opacity; except that visible air
contaminants in excess of 40 percent opacity but less than or equal to 60
percent opacity may be emitted for periods aggregating not more than 3 minutes
in any 60-minute period during an operation breakdown or during the cleaning of
air pollution control equipment .
(13)
Painting and surface-coating
operations. No person shall allow, cause or permit painting and
surface-coating operations in a manner such that particulate matter in the gas
discharge exceeds 0.01 grain per standard cubic foot of exhaust gas.
Notes
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