Current through August 26, 2024
(1) PERFORMANCE
TEST REQUIREMENTS. Performance tests shall be conducted using the test methods
and procedures in this section and s.
NR 460.06. The test plan to be followed shall be made
available to the department prior to the testing, if requested. Performance
test results shall be documented in complete test reports that contain all of
the following information:
(a) A brief process
description.
(b) Sampling location
description.
(c) A description of
sampling and analytical procedures and any modifications to standard
procedures.
(d) Test
results.
(e) Quality assurance
procedures and results.
(f) Records
of operating conditions during the test, preparation of calibration standards,
and calibration procedures.
(g) Raw
data sheets for field sampling and field and laboratory analyses.
(h) Documentation of calculations.
(i) Any other information required by the
test method.
(2) USE OF
OPERATION PERMIT PERFORMANCE TEST RESULTS FOR COMPLIANCE DEMONSTRATION.
(a) If the owner or operator of an affected
source conducts performance testing at startup to obtain an operation permit
under ch. NR 407, the results of the testing may be used to demonstrate
compliance with this subchapter if all of the following conditions are met:
1. The test methods and procedures identified
in sub. (3) were used during the performance test.
2. The performance test was conducted under
representative operating conditions for the source.
3. The performance test report contains the
elements required by sub. (1).
4.
The owner or operator of the affected source for which the performance test was
conducted has sufficient data to establish the operating parameter values that
correspond to compliance with the standards in s.
NR 463.04, as required for continuous compliance
monitoring under s.
NR 463.07.
(b) The results of tests conducted prior to
December 1991 in which Method 306A in Appendix A of 40 CFR part 63, incorporated by reference in s.
NR 484.04, was used to demonstrate the performance of a
control technique are not acceptable.
(3) TEST METHODS. Each owner or operator
subject to the provisions of this subchapter and required by s.
NR 463.06(3) to conduct an initial
performance test shall use the test methods identified in this section to
demonstrate compliance with the standards in s.
NR 463.04.
(a) Method
306 or Method 306A in Appendix A of 40 CFR part 63, both titled "Determination
of Chromium Emissions From Decorative and Hard Chromium Electroplating and
Anodizing Operations," which are incorporated by reference in s.
NR 484.04, shall be used to determine the chromium
concentration from hard or decorative chromium electroplating tanks or chromium
anodizing tanks. The sampling time and sample volume for each run of Methods
306 and 306A shall be at least 120 minutes and 1.70 dscm (60 dscf),
respectively. Methods 306 and 306A allow the measurement of either total
chromium or hexavalent chromium emissions. For the purposes of this subchapter,
sources using chromic acid baths may demonstrate compliance with the emission
limits of s.
NR 463.04 by measuring either total chromium or
hexavalent chromium. The hexavalent chromium concentration measured by these
methods is equal to the total chromium concentration for the affected
operations.
(b) Method 306B in
Appendix A of 40 CFR part 63, "Surface Tension Measurement and Recordkeeping
for Tanks Used at Decorative Chromium Electroplating and Anodizing Facilities,"
incorporated by reference in s.
NR 484.04, shall be used to measure the surface tension
of electroplating and anodizing baths.
(c) Alternate test methods may also be used
if the method has been validated using Method 301 in Appendix A of 40 CFR part
63, incorporated by reference in s.
NR 484.04, and if approved by the department. Procedures
for requesting and obtaining approval are contained in s.
NR 460.06(5).
(4) ESTABLISHING SITE-SPECIFIC OPERATING
PARAMETER VALUES.
(a) Each owner or operator
required to establish site-specific operating parameters shall follow the
procedures in this subsection.
(b)
All monitoring equipment shall be installed such that representative
measurements of emissions or process parameters from the affected source are
obtained. For monitoring equipment purchased from a vendor, verification of the
operational status of the monitoring equipment shall include execution of the
manufacturer's written specifications or recommendations for installation,
operation and calibration of the system.
1.
Specifications for differential pressure measurement devices used to measure
velocity pressure shall be in accordance with section 2.2 of Method 2 in
Appendix A of 40 CFR part 60, incorporated by reference in s.
NR 484.04.
2.
Specifications for differential pressure measurement devices used to measure
pressure drop across a control system shall be in accordance with
manufacturer's accuracy specifications.
(c) The surface tension of electroplating and
anodizing baths shall be measured using Method 306B in Appendix A of 40 CFR
part 63, "Surface Tension Measurement and Recordkeeping for Tanks Used at
Decorative Chromium Electroplating and Anodizing Facilities," incorporated by
reference in s.
NR 484.04. This method shall also be followed when
wetting agent type or combination wetting agent/foam blanket type fume
suppressants are used to control chromium emissions from a hard chromium
electroplating tank and surface tension measurement is conducted to demonstrate
continuous compliance.
(d) The
owner or operator of a source required to measure the velocity pressure at the
inlet to an add-on air pollution control device in accordance with s.
NR 463.07(2), shall establish the
site-specific velocity pressure as follows:
1. Locate a velocity traverse port in a
section of straight duct that connects the hooding on the plating tank or tanks
with the control device. The port shall be located as close to the control
system as possible, and shall be placed a minimum of 2 duct diameters
downstream and 0.5 diameter upstream of any flow disturbance such as a bend,
expansion or contraction (see Method 1 in Appendix A of 40 CFR part 60,
incorporated by reference in s.
NR 484.04). If 2.5 diameters of straight duct work does
not exist, locate the port 0.8 of the distance between flow disturbances
downstream and 0.2 of the distance between flow disturbances upstream from the
respective flow disturbances.
2. A
12-point velocity traverse of the duct to the control device shall be conducted
along a single axis according to Method 2 in Appendix A of 40 CFR part 60,
incorporated by reference in s.
NR 484.04, using an S-type pitot tube; measurement of the
barometric pressure and duct temperature at each traverse point is not
required, but is suggested. Mark the S-type pitot tube as specified in Method 1
in Appendix A of 40 CFR part 60, incorporated by reference in s.
NR 484.04, with 12 points. Measure the velocity pressure
(Dp) values for the velocity points and record. Determine the square root of
the individual velocity point Dp values and average. The point with the square
root value that comes closest to the average square root value is the point of
average velocity. The Dp value measured for this point during the performance
test shall be used as the reference for future monitoring.
(e) The owner or operator of a source
required to measure the pressure drop across the add-on air pollution control
device in accordance with s.
NR 463.07(1) to (4) may establish the
pressure drop in accordance with the following guidelines:
1. Pressure taps shall be installed at any of
the following locations:
a. At the inlet and
outlet of the control system. In this case the inlet tap would be installed in
the ductwork just prior to the control device and the corresponding outlet
pressure tap would be installed on the outlet side of the control device prior
to the blower or on the downstream side of the blower.
b. On each side of the packed bed within the
control system or on each side of each mesh pad within the control
system.
c. On the front side of the
first mesh pad and back side of the last mesh pad within the control
system.
2. Pressure taps
shall be sited at locations that are:
a. As
free from pluggage as possible and away from any flow disturbances such as
cyclonic demisters.
b. Situated
such that no air infiltration at the measurement site will occur that could
bias the measurement.
3.
Pressure taps shall be constructed of either polyethylene, polybutylene or
other nonreactive materials.
4.
Nonreactive plastic tubing shall be used to connect the pressure taps to the
device used to measure pressure drop.
5. Any of the following pressure gauges may
be used to monitor pressure drop: a magnehelic gauge, an inclined manometer or
a "U" tube manometer.
6. Prior to
connecting any pressure lines to the pressure gauges, each gauge shall be
zeroed. No calibration of the pressure gauges is required.
(5) SPECIAL COMPLIANCE PROVISIONS
FOR MULTIPLE SOURCES CONTROLLED BY A COMMON ADD-ON AIR POLLUTION CONTROL
DEVICE.
(a) This subsection identifies
procedures for measuring the outlet chromium concentration from an add-on air
pollution control device that is used to control multiple sources that may or
may not include sources not affected by this subchapter.
(b) When multiple affected sources performing
the same type of operation (for example, all are performing hard chromium
electroplating), and subject to the same emission limitation, are controlled
with an add-on air pollution control device that is not controlling emissions
from any other type of affected operation or from any sources not affected by
this subchapter, the applicable emission limitation identified in s.
NR 463.04 shall be met at the outlet of the add-on air
pollution control device.
(c) When
multiple affected sources performing the same type of operation and subject to
the same emission limitation are controlled with a common add-on air pollution
control device that is also controlling emissions from sources not affected by
this subchapter, the following procedures shall be followed to determine
compliance with the applicable emission limitation in s.
NR 463.04:
1. Calculate
the cross-sectional area of each inlet duct (uptakes from each hood) including
those not affected by this subchapter.
2. Determine the total sample time per test
run by dividing the total inlet area from all tanks connected to the control
system by the total inlet area for all ducts associated with affected sources,
and then multiply this number by 2 hours. The calculated time is the minimum
sample time required per test run.
3. Perform testing using Method 306 in
Appendix A of 40 CFR part 63, incorporated by reference in s.
NR 484.04, and calculate an outlet mass emission
rate.
4. Determine the total
ventilation rate from the affected sources by using equation 1:
where VRtot is the average total
ventilation rate in dscm/min for the 3 test runs as determined at the outlet by
means of the Method 306 testing; IDAi is the total inlet
area for all ducts associated with affected sources; IAtotal is the sum of all
inlet duct areas from both affected sources and sources not affected by this
subchapter; and VRinlet is the total ventilation rate from all inlet ducts
associated with affected sources.
5. Establish the allowable mass emission rate
of the system (AMRsys) in milligrams of total chromium
per hour (mg/hr) using equation 2:
[SIGMA]VRinlet x EL x 60
minutes/hour = AMRsys Equation (2)
where [SIGMA] VRinlet is the total
ventilation rate in dscm/min from the affected sources, and EL is the
applicable emission limitation froms.
NR 463.04 in mg/dscm. The allowable mass emission rate
(AMRsys) calculated from equation 2 shall be equal to or
more than the outlet 3-run average mass emission rate determined from Method
306 testing in order for the source to be in compliance with the
standard.
(d)
When multiple affected sources performing different types of operations (for
example, hard chromium electroplating, decorative chromium electroplating or
chromium anodizing) are controlled by a common add-on air pollution control
device that may or may not also be controlling emissions from sources not
affected by this subchapter, or if the affected sources controlled by the
common add-on air pollution control device perform the same operation but are
subject to different emission limitations (for example, because one is a new
hard chromium plating tank and one is an existing small, hard chromium plating
tank), the following procedures shall be followed to determine compliance with
the applicable emission limitation in s.
NR 463.04:
1. Follow
the steps outlined in par. (c) 1. to 3.
2. Determine the total ventilation rate for
each type of affected source using equation 3:
See
Image
where VRtot is the average total
ventilation rate in dscm/min for the 3 test runs as determined at the outlet by
means of the Method 306 testing; IDAi,a is the total
inlet duct area for all ducts conveying chromic acid from each type of affected
source performing the same operation, or each type of affected source subject
to the same emission limitation; IAtotal is the sum of all duct areas from both
affected sources and sources not affected by this subchapter; and
VRinlet,a is the total ventilation rate from all inlet
ducts conveying chromic acid from each type of affected source performing the
same operation, or each type of affected source subject to the same emission
limitation.
3. Establish
the allowable mass emission rate in mg/hr for each type of affected source that
is controlled by the add-on air pollution control device using equation 4, 5, 6
or 7 as appropriate:
See
Image
where "hc" applies to the total of ventilation rates for
all hard chromium electroplating tanks subject to the same emission limitation,
"dc" applies to the total of ventilation rates for the decorative chromium
electroplating tanks, "ca" applies to the total of ventilation rates for the
chromium anodizing tanks, and EL is the applicable emission limitation from s.
NR 463.04 in mg/dscm. There are 2 equations for hard
chromium electroplating tanks because different emission limitations may apply
(for example, a new tank versus an existing, small tank).
4. Establish the allowable mass emission rate
(AMR) in mg/hr for the system using equation 8, including each type of affected
source as appropriate:
See
Image
The allowable mass emission rate calculated from equation 8
shall be equal to or more than the outlet 3-run average mass emission rate
determined from Method 306 testing in order for the source to be in compliance
with the standards in s.
NR 463.04.
(e) Each owner or operator that uses the
special compliance provisions of this subsection to demonstrate compliance with
the emission limitations of s.
NR 463.04 shall submit the measurements and calculations
to support these compliance methods with the notification of compliance status
required by s.
NR 463.106(5).
(f) Each owner or operator that uses the
special compliance provisions of this subsection to demonstrate compliance with
the emission limitations of s.
NR 463.04 shall repeat these procedures if a tank is
added or removed from the control system regardless of whether that tank is not
an affected source. If neither the new tank nor the existing tank is an
affected source and the new tank replaces an existing tank of the same size and
is connected to the control system through the same size inlet duct, then this
procedure does not have to be repeated.
(6) COMPLIANCE PROVISIONS FOR MASS RATE
EMISSION STANDARD FOR ENCLOSED HARD CHROMIUM ELECTROPLATING TANKS.
(a) This subsection identifies procedures for
calculating the maximum allowable mass emission rate for owners or operators of
affected sources who choose to meet the mass emission rate standard in s.
NR 463.04(3) (b) 4. or 5.
(b) The owner or operator of an enclosed hard
chromium electroplating tank that is an affected source other than an existing
affected source located at a small hard chromium electroplating facility who
chooses to meet the mass emission rate standard in s.
NR 463.04(3) (b) 4. shall determine
compliance by not allowing the mass rate of total chromium in the exhaust gas
stream discharged to the atmosphere to exceed the maximum allowable mass
emission rate calculated using equation 9:
MAMER = ETSA x K x 0.015 mg/dscm Equation (9)
where:
MAMER is the alternative emission rate for enclosed hard
chromium electroplating tanks in mg/hr
ETSA is the hard chromium electroplating tank surface area
in square feet (ft2)
K is the conversion factor, 425
dscm/(ft2 x hr)
(c) Compliance with the alternative mass
emission limit in s.
NR 463.04(3) (b) 4. is demonstrated if
the 3-run average mass emission rate determined from Method 306 in Appendix A
of 40 CFR part 63, incorporated by reference in s.
NR 484.04(25), testing is less than or
equal to the maximum allowable mass emission rate calculated from equation 9 in
par. (b).
(d) The owner or operator
of an enclosed hard chromium electroplating tank that is an existing affected
source located at a small hard chromium electroplating facility who chooses to
meet the mass emission rate standard in s.
NR 463.04(3) (b) 5. shall determine
compliance by not allowing the mass rate of total chromium in the exhaust gas
stream discharged to the atmosphere to exceed the maximum allowable mass
emission rate calculated using equation 10:
MAMER = ETSA x K x 0.03 mg/dscm Equation (10)
where:
MAMER is the alternative emission rate for enclosed hard
chromium electroplating tanks in mg/hr
ETSA is the hard chromium electroplating tank surface area
in square feet (ft2)
K is the conversion factor, 425 dscm/(ft2 x hr)
(e) Compliance with the
alternative mass emission limit in s.
NR 463.04(3) (b) 5. is demonstrated if
the 3-run average mass emission rate determined from Method 306 in Appendix A
of 40 CFR part 63, incorporated by reference in s.
NR 484.04(25), testing is less than or
equal to the maximum allowable mass emission rate calculated from equation 10
in par. (d).
