Ariz. Admin. Code § R18-2-720 - Standards of Performance for Existing Lime Manufacturing Plants
A. The provisions
of this Section are applicable to the following affected facilities used in the
manufacture of lime: rotary lime kilns, vertical lime kilns, lime hydrators,
and limestone crushing facilities. This Section is also applicable to limestone
crushing equipment which exists apart from other lime manufacturing
facilities.
B. No person shall
cause, allow or permit the discharge of particulate matter into the atmosphere
in any one hour from any lime manufacturing or limestone crushing facility in
total quantities in excess of the amounts calculated by one of the following
equations:
1. For process sources having a
process weight rate of 60,000 pounds per hour (30 tons per hour) or less, the
maximum allowable emissions shall be determined by the following equation:
E = 4.10P0.67
where:
E = the maximum allowable particulate emissions rate in pounds-mass per hour.
P = the process weight rate in tons-mass per hour.
2. For process sources
having a process weight rate greater than 60,000 pounds per hour (30 tons per
hour), the maximum allowable emissions shall be determined by the following
equation:
E = 55.0P0.11 -40
where "E" and "P" are defined as indicated in subsection (B)(1).
C. Actual values shall be
calculated from the applicable equations and rounded off to two decimal
places.
D. For purposes of this
Section, the total process weight from all similar units employing a similar
type process shall be used in determining the maximum allowable emission of
particulate matter.
E. Fugitive
emissions from lime plants shall be controlled in accordance with
R18-2-604 through
R18-2-607.
F. The owner or operator subject to the
provisions of this Section shall install, calibrate, maintain, and operate a
continuous monitoring system, except as provided in subsection (G), to monitor
and record the opacity of the gases discharged into the atmosphere from any
rotary lime kiln. The span of this system shall be set at 70%
opacity.
G. The owner or operator
of any rotary lime kiln using a wet scrubbing emission control device subject
to the provisions of this Section shall not be required to monitor the opacity
of the gases discharged as required in subsection (F).
H. The test methods and procedures required
by this Section are as follows:
1. The
reference methods in 40 CFR 60, Appendix A, as incorporated by reference in
Appendix 2 of this Chapter, shall be used to determine compliance with this
Section as follows:
a. Method 5 for the
measurement of particulate matter,
b. Method 1 for sample and velocity
traverses,
c. Method 2 for velocity
and volumetric flow rate,
d. Method
3 for gas analysis,
e. Method 4 for
stack gas moisture,
f. Method 9 for
visible emissions.
2.
For Method 5, the sampling time for each run shall be at least 60 minutes and
the sampling rate shall be at least 0.85 dscm/hr (0.53 dscf/min), except that
shorter sampling times, when necessitated by process variables or other
factors, may be approved by the Director.
3. Because of the high moisture content of
the exhaust gases from the hydrators, in the range of 40 to 85% by volume, the
Method 5 sample train may be modified to include a calibrated orifice
immediately following the sample nozzle when testing lime hydrators. In this
configuration, the sampling rate necessary for maintaining isokinetic
conditions can be directly related to exhaust gas velocity without a correction
for moisture content.
Notes
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