[Code of Federal Regulations]
[Title 40, Volume 12]
[Revised as of July 1, 2006]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR63.1510]
[Page 64-73]
TITLE 40--PROTECTION OF ENVIRONMENT
CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
PART 63_NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR
SOURCE CATEGORIES--Table of Contents
Subpart RRR_National Emission Standards for Hazardous Air Pollutants for
Secondary Aluminum Production
Sec. 63.1510 Monitoring requirements.
(a) Summary. On and after the compliance date established by Sec.
63.1501, the owner or operator of a new or existing affected source or
emission unit must monitor all control equipment and processes according
to the requirements in this section. Monitoring requirements for each
type of affected source and emission unit are summarized in Table 3 to
this subpart.
(b) Operation, maintenance, and monitoring (OM&M) plan. The owner or
operator must prepare and implement for each new or existing affected
source and emission unit, a written operation, maintenance, and
monitoring (OM&M) plan. The owner or operator of an existing affected
source must submit the OM&M plan to the responsible permitting authority
no later than the compliance date established by Sec. 63.1501(a). The
owner or operator of any new affected source must submit the OM&M plan
to the responsible permitting authority within 90 days after a
successful initial performance test under Sec. 63.1511(b), or within 90
days after the compliance date established by Sec. 63.1501(b) if no
initial performance test is required. The plan must be accompanied by a
written certification by the owner or operator that the OM&M plan
satisfies all requirements of this section and is otherwise consistent
with the requirements of this subpart. The owner or operator must comply
with all of the provisions of the OM&M plan as submitted to the
permitting authority, unless and until the plan is revised in accordance
with the following procedures. If the permitting authority determines at
any time after receipt of the OM&M plan that any revisions of the plan
are necessary to satisfy the requirements of this section or this
subpart, the owner or operator must promptly make all necessary
revisions and resubmit the revised plan. If the owner or operator
determines that any other revisions of the OM&M plan are necessary, such
revisions will not become effective until the owner or operator submits
a description of the changes and a revised plan incorporating them to
the permitting authority. Each plan must contain the following
information:
(1) Process and control device parameters to be monitored to
determine compliance, along with established operating levels or ranges,
as applicable, for each process and control device.
(2) A monitoring schedule for each affected source and emission
unit.
(3) Procedures for the proper operation and maintenance of each
process unit and add-on control device used to meet the applicable
emission limits or standards in Sec. 63.1505.
(4) Procedures for the proper operation and maintenance of
monitoring devices or systems used to determine compliance, including:
(i) Calibration and certification of accuracy of each monitoring
device, at least once every 6 months, according to the manufacturer's
instructions; and
(ii) Procedures for the quality control and quality assurance of
continuous emission or opacity monitoring systems as required by the
general provisions in subpart A of this part.
(5) Procedures for monitoring process and control device parameters,
including procedures for annual inspections of afterburners, and if
applicable, the procedure to be used for determining charge/feed (or
throughput) weight if a measurement device is not used.
(6) Corrective actions to be taken when process or operating
parameters or add-on control device parameters deviate from the value or
range established in paragraph (b)(1) of this section, including:
[[Page 65]]
(i) Procedures to determine and record the cause of any deviation or
excursion, and the time the deviation or excursion began and ended; and
(ii) Procedures for recording the corrective action taken, the time
corrective action was initiated, and the time/date corrective action was
completed.
(7) A maintenance schedule for each process and control device that
is consistent with the manufacturer's instructions and recommendations
for routine and long-term maintenance.
(8) Documentation of the work practice and pollution prevention
measures used to achieve compliance with the applicable emission limits
and a site-specific monitoring plan as required in paragraph (o) of this
section for each group 1 furnace not equipped with an add-on air
pollution control device.
(c) Labeling. The owner or operator must inspect the labels for each
group 1 furnace, group 2 furnace, in-line fluxer and scrap dryer/
delacquering kiln/decoating kiln at least once per calendar month to
confirm that posted labels as required by the operational standard in
Sec. 63.1506(b) are intact and legible.
(d) Capture/collection system. The owner or operator must:
(1) Install, operate, and maintain a capture/collection system for
each affected source and emission unit equipped with an add-on air
pollution control device; and
(2) Inspect each capture/collection and closed vent system at least
once each calendar year to ensure that each system is operating in
accordance with the operating requirements in Sec. 63.1506(c) and
record the results of each inspection.
(e) Feed/charge weight. The owner or operator of an affected source
or emission unit subject to an emission limit in kg/Mg (lb/ton) or
[micro]g/Mg (gr/ton) of feed/charge must install, calibrate, operate,
and maintain a device to measure and record the total weight of feed/
charge to, or the aluminum production from, the affected source or
emission unit over the same operating cycle or time period used in the
performance test. Feed/charge or aluminum production within SAPUs must
be measured and recorded on an emission unit-by-emission unit basis. As
an alternative to a measurement device, the owner or operator may use a
procedure acceptable to the applicable permitting authority to determine
the total weight of feed/charge or aluminum production to the affected
source or emission unit.
(1) The accuracy of the weight measurement device or procedure must
be 1 percent of the weight being measured. The
owner or operator may apply to the permitting agency for approval to use
a device of alternative accuracy if the required accuracy cannot be
achieved as a result of equipment layout or charging practices. A device
of alternative accuracy will not be approved unless the owner or
operator provides assurance through data and information that the
affected source will meet the relevant emission standard.
(2) The owner or operator must verify the calibration of the weight
measurement device in accordance with the schedule specified by the
manufacturer, or if no calibration schedule is specified, at least once
every 6 months.
(f) Fabric filters and lime-injected fabric filters. The owner or
operator of an affected source or emission unit using a fabric filter or
lime-injected fabric filter to comply with the requirements of this
subpart must install, calibrate, maintain, and continuously operate a
bag leak detection system as required in paragraph (f)(1) of this
section or a continuous opacity monitoring system as required in
paragraph (f)(2) of this section. The owner or operator of an aluminum
scrap shredder must install and operate a bag leak detection system as
required in paragraph (f)(1) of this section, install and operate a
continuous opacity monitoring system as required in paragraph (f)(2) of
this section, or conduct visible emission observations as required in
paragraph (f)(3) of this section.
(1) These requirements apply to the owner or operator of a new or
existing affected source or existing emission unit using a bag leak
detection system.
(i) The owner or operator must install and operate a bag leak
detection system for each exhaust stack of a fabric filter.
[[Page 66]]
(ii) Each triboelectric bag leak detection system must be installed,
calibrated, operated, and maintained according to the ``Fabric Filter
Bag Leak Detection Guidance,'' (September 1997). This document is
available from the U.S. Environmental Protection Agency; Office of Air
Quality Planning and Standards; Emissions, Monitoring and Analysis
Division; Emission Measurement Center (MD-19), Research Triangle Park,
NC 27711. This document also is available on the Technology Transfer
Network (TTN) under Emission Measurement Technical Information (EMTIC),
Continuous Emission Monitoring. Other bag leak detection systems must be
installed, operated, calibrated, and maintained in a manner consistent
with the manufacturer's written specifications and recommendations.
(iii) The bag leak detection system must be certified by the
manufacturer to be capable of detecting PM emissions at concentrations
of 10 milligrams per actual cubic meter (0.0044 grains per actual cubic
foot) or less.
(iv) The bag leak detection system sensor must provide output of
relative or absolute PM loadings.
(v) The bag leak detection system must be equipped with a device to
continuously record the output signal from the sensor.
(vi) The bag leak detection system must be equipped with an alarm
system that will sound automatically when an increase in relative PM
emissions over a preset level is detected. The alarm must be located
where it is easily heard by plant operating personnel.
(vii) For positive pressure fabric filter systems, a bag leak
detection system must be installed in each baghouse compartment or cell.
For negative pressure or induced air fabric filters, the bag leak
detector must be installed downstream of the fabric filter.
(viii) Where multiple detectors are required, the system's
instrumentation and alarm may be shared among detectors.
(ix) The baseline output must be established by adjusting the range
and the averaging period of the device and establishing the alarm set
points and the alarm delay time.
(x) Following initial adjustment of the system, the owner or
operator must not adjust the sensitivity or range, averaging period,
alarm set points, or alarm delay time except as detailed in the OM&M
plan. In no case may the sensitivity be increased by more than 100
percent or decreased more than 50 percent over a 365-day period unless
such adjustment follows a complete fabric filter inspection which
demonstrates that the fabric filter is in good operating condition.
(2) These requirements apply to the owner or operator of a new or
existing affected source or an existing emission unit using a continuous
opacity monitoring system.
(i) The owner or operator must install, calibrate, maintain, and
operate a continuous opacity monitoring system to measure and record the
opacity of emissions exiting each exhaust stack.
(ii) Each continuous opacity monitoring system must meet the design
and installation requirements of Performance Specification 1 in appendix
B to 40 CFR part 60.
(3) These requirements apply to the owner or operator of a new or
existing aluminum scrap shredder who conducts visible emission
observations. The owner or operator must:
(i) Perform a visible emissions test for each aluminum scrap
shredder using a certified observer at least once a day according to the
requirements of Method 9 in appendix A to 40 CFR part 60. Each Method 9
test must consist of five 6-minute observations in a 30-minute period;
and
(ii) Record the results of each test.
(g) Afterburner. These requirements apply to the owner or operator
of an affected source using an afterburner to comply with the
requirements of this subpart.
(1) The owner or operator must install, calibrate, maintain, and
operate a device to continuously monitor and record the operating
temperature of the afterburner consistent with the requirements for
continuous monitoring systems in subpart A of this part.
(2) The temperature monitoring device must meet each of these
performance and equipment specifications:
[[Page 67]]
(i) The temperature monitoring device must be installed at the exit
of the combustion zone of each afterburner.
(ii) The monitoring system must record the temperature in 15-minute
block averages and determine and record the average temperature for each
3-hour block period.
(iii) The recorder response range must include zero and 1.5 times
the average temperature established according to the requirements in
Sec. 63.1512(m).
(iv) The reference method must be a National Institute of Standards
and Technology calibrated reference thermocouple-potentiometer system or
alternate reference, subject to approval by the Administrator.
(3) The owner or operator must conduct an inspection of each
afterburner at least once a year and record the results. At a minimum,
an inspection must include:
(i) Inspection of all burners, pilot assemblies, and pilot sensing
devices for proper operation and clean pilot sensor;
(ii) Inspection for proper adjustment of combustion air;
(iii) Inspection of internal structures (e.g., baffles) to ensure
structural integrity;
(iv) Inspection of dampers, fans, and blowers for proper operation;
(v) Inspection for proper sealing;
(vi) Inspection of motors for proper operation;
(vii) Inspection of combustion chamber refractory lining and clean
and replace lining as necessary;
(viii) Inspection of afterburner shell for corrosion and/or hot
spots;
(ix) Documentation, for the burn cycle that follows the inspection,
that the afterburner is operating properly and any necessary adjustments
have been made; and
(x) Verification that the equipment is maintained in good operating
condition.
(xi) Following an equipment inspection, all necessary repairs must
be completed in accordance with the requirements of the OM&M plan.
(h) Fabric filter inlet temperature. These requirements apply to the
owner or operator of a scrap dryer/delacquering kiln/decoating kiln or a
group 1 furnace using a lime-injected fabric filter to comply with the
requirements of this subpart.
(1) The owner or operator must install, calibrate, maintain, and
operate a device to continuously monitor and record the temperature of
the fabric filter inlet gases consistent with the requirements for
continuous monitoring systems in subpart A of this part.
(2) The temperature monitoring device must meet each of these
performance and equipment specifications:
(i) The monitoring system must record the temperature in 15-minute
block averages and calculate and record the average temperature for each
3-hour block period.
(ii) The recorder response range must include zero and 1.5 times the
average temperature established according to the requirements in Sec.
63.1512(n).
(iii) The reference method must be a National Institute of Standards
and Technology calibrated reference thermocouple-potentiometer system or
alternate reference, subject to approval by the Administrator.
(i) Lime injection. These requirements apply to the owner or
operator of an affected source or emission unit using a lime-injected
fabric filter to comply with the requirements of this subpart.
(1) The owner or operator of a continuous lime injection system must
verify that lime is always free-flowing by either:
(i) Inspecting each feed hopper or silo at least once each 8-hour
period and recording the results of each inspection. If lime is found
not to be free-flowing during any of the 8-hour periods, the owner or
operator must increase the frequency of inspections to at least once
every 4-hour period for the next 3 days. The owner or operator may
return to inspections at least once every 8 hour period if corrective
action results in no further blockages of lime during the 3-day period;
or
(ii) Subject to the approval of the permitting agency, installing,
operating and maintaining a load cell, carrier gas/lime flow indicator,
carrier gas pressure drop measurement system or other system to confirm
that lime is free-flowing. If lime is found not to be free-flowing, the
owner or operator
[[Page 68]]
must promptly initiate and complete corrective action, or
(iii) Subject to the approval of the permitting agency, installing,
operating and maintaining a device to monitor the concentration of HCl
at the outlet of the fabric filter. If an increase in the concentration
of HCl indicates that the lime is not free-flowing, the owner or
operator must promptly initiate and complete corrective action.
(2) The owner or operator of a continuous lime injection system must
record the lime feeder setting once each day of operation.
(3) An owner or operator who intermittently adds lime to a lime
coated fabric filter must obtain approval from the permitting authority
for a lime addition monitoring procedure. The permitting authority will
not approve a monitoring procedure unless data and information are
submitted establishing that the procedure is adequate to ensure that
relevant emission standards will be met on a continuous basis.
(j) Total reactive flux injection rate. These requirements apply to
the owner or operator of a group 1 furnace (with or without add-on air
pollution control devices) or in-line fluxer. The owner or operator
must:
(1) Install, calibrate, operate, and maintain a device to
continuously measure and record the weight of gaseous or liquid reactive
flux injected to each affected source or emission unit.
(i) The monitoring system must record the weight for each 15-minute
block period, during which reactive fluxing occurs, over the same
operating cycle or time period used in the performance test.
(ii) The accuracy of the weight measurement device must be 1 percent of the weight of the reactive component of the
flux being measured. The owner or operator may apply to the permitting
authority for permission to use a weight measurement device of
alternative accuracy in cases where the reactive flux flow rates are so
low as to make the use of a weight measurement device of 1 percent impracticable. A device of alternative
accuracy will not be approved unless the owner or operator provides
assurance through data and information that the affected source will
meet the relevant emission standards.
(iii) The owner or operator must verify the calibration of the
weight measurement device in accordance with the schedule specified by
the manufacturer, or if no calibration schedule is specified, at least
once every 6 months.
(2) Calculate and record the gaseous or liquid reactive flux
injection rate (kg/Mg or lb/ton) for each operating cycle or time period
used in the performance test using the procedure in Sec. 63.1512(o).
(3) Record, for each 15-minute block period during each operating
cycle or time period used in the performance test during which reactive
fluxing occurs, the time, weight, and type of flux for each addition of:
(i) Gaseous or liquid reactive flux other than chlorine; and
(ii) Solid reactive flux.
(4) Calculate and record the total reactive flux injection rate for
each operating cycle or time period used in the performance test using
the procedure in Sec. 63.1512(o).
(5) The owner or operator of a group 1 furnace or in-line fluxer
performing reactive fluxing may apply to the Administrator for approval
of an alternative method for monitoring and recording the total reactive
flux addition rate based on monitoring the weight or quantity of
reactive flux per ton of feed/charge for each operating cycle or time
period used in the performance test. An alternative monitoring method
will not be approved unless the owner or operator provides assurance
through data and information that the affected source will meet the
relevant emission standards on a continuous basis.
(k) Thermal chip dryer. These requirements apply to the owner or
operator of a thermal chip dryer with emissions controlled by an
afterburner. The owner or operator must:
(1) Record the type of materials charged to the unit for each
operating cycle or time period used in the performance test.
(2) Submit a certification of compliance with the applicable
operational standard for charge materials in Sec. 63.1506(f)(3) for
each 6-month reporting
[[Page 69]]
period. Each certification must contain the information in Sec.
63.1516(b)(2)(i).
(l) Dross-only furnace. These requirements apply to the owner or
operator of a dross-only furnace. The owner or operator must:
(1) Record the materials charged to each unit for each operating
cycle or time period used in the performance test.
(2) Submit a certification of compliance with the applicable
operational standard for charge materials in Sec. 63.1506(i)(3) for
each 6-month reporting period. Each certification must contain the
information in Sec. 63.1516(b)(2)(ii).
(m) In-line fluxers using no reactive flux. The owner or operator of
an in-line fluxer that uses no reactive flux materials must submit a
certification of compliance with the operational standard for no
reactive flux materials in Sec. 63.1506(l) for each 6-month reporting
period. Each certification must contain the information in Sec.
63.1516(b)(2)(vi).
(n) Sidewell group 1 furnace with add-on air pollution control
devices. These requirements apply to the owner or operator of a sidewell
group 1 furnace using add-on air pollution control devices. The owner or
operator must:
(1) Record in an operating log for each charge of a sidewell furnace
that the level of molten metal was above the top of the passage between
the sidewell and hearth during reactive flux injection, unless the
furnace hearth was also equipped with an add-on control device.
(2) Submit a certification of compliance with the operational
standards in Sec. 63.1506(m)(7) for each 6-month reporting period. Each
certification must contain the information in Sec. 63.1516(b)(2)(iii).
(o) Group 1 furnace without add-on air pollution control devices.
These requirements apply to the owner or operator of a group 1 furnace
that is not equipped with an add-on air pollution control device.
(1) The owner or operator must develop, in consultation with the
responsible permitting authority, a written site-specific monitoring
plan. The site-specific monitoring plan must be submitted to the
permitting authority as part of the OM&M plan. The site-specific
monitoring plan must contain sufficient procedures to ensure continuing
compliance with all applicable emission limits and must demonstrate,
based on documented test results, the relationship between emissions of
PM, HCl, and D/F and the proposed monitoring parameters for each
pollutant. Test data must establish the highest level of PM, HCl, and D/
F that will be emitted from the furnace. This may be determined by
conducting performance tests and monitoring operating parameters while
charging the furnace with feed/charge materials containing the highest
anticipated levels of oils and coatings and fluxing at the highest
anticipated rate. If the permitting authority determines that any
revisions of the site-specific monitoring plan are necessary to meet the
requirements of this section or this subpart, the owner or operator must
promptly make all necessary revisions and resubmit the revised plan to
the permitting authority.
(i) The owner or operator of an existing affected source must submit
the site-specific monitoring plan to the applicable permitting authority
for review at least 6 months prior to the compliance date.
(ii) The permitting authority will review and approve or disapprove
a proposed plan, or request changes to a plan, based on whether the plan
contains sufficient provisions to ensure continuing compliance with
applicable emission limits and demonstrates, based on documented test
results, the relationship between emissions of PM, HCl, and D/F and the
proposed monitoring parameters for each pollutant. Test data must
establish the highest level of PM, HCl, and D/F that will be emitted
from the furnace. Subject to permitting agency approval of the OM&M
plan, this may be determined by conducting performance tests and
monitoring operating parameters while charging the furnace with feed/
charge materials containing the highest anticipated levels of oils and
coatings and fluxing at the highest anticipated rate.
(2) Each site-specific monitoring plan must document each work
practice, equipment/design practice, pollution prevention practice, or
other measure
[[Page 70]]
used to meet the applicable emission standards.
(3) Each site-specific monitoring plan must include provisions for
unit labeling as required in paragraph (c) of this section, feed/charge
weight measurement (or production weight measurement) as required in
paragraph (e) of this section and flux weight measurement as required in
paragraph (j) of this section.
(4) Each site-specific monitoring plan for a melting/holding furnace
subject to the clean charge emission standard in Sec. 63.1505(i)(3)
must include these requirements:
(i) The owner or operator must record the type of feed/ charge
(e.g., ingot, thermally dried chips, dried scrap, etc.) for each
operating cycle or time period used in the performance test; and
(ii) The owner or operator must submit a certification of compliance
with the applicable operational standard for clean charge materials in
Sec. 63.1506(n)(3) for each 6-month reporting period. Each
certification must contain the information in Sec. 63.1516(b)(2)(iv).
(5) If a continuous emission monitoring system is included in a
site-specific monitoring plan, the plan must include provisions for the
installation, operation, and maintenance of the system to provide
quality-assured measurements in accordance with all applicable
requirements of the general provisions in subpart A of this part.
(6) If a continuous opacity monitoring system is included in a site-
specific monitoring plan, the plan must include provisions for the
installation, operation, and maintenance of the system to provide
quality-assured measurements in accordance with all applicable
requirements of this subpart.
(7) If a site-specific monitoring plan includes a scrap inspection
program for monitoring the scrap contaminant level of furnace feed/
charge materials, the plan must include provisions for the demonstration
and implementation of the program in accordance with all applicable
requirements in paragraph (p) of this section.
(8) If a site-specific monitoring plan includes a calculation method
for monitoring the scrap contaminant level of furnace feed/charge
materials, the plan must include provisions for the demonstration and
implementation of the program in accordance with all applicable
requirements in paragraph (q) of this section.
(p) Scrap inspection program for group 1 furnace without add-on air
pollution control devices. A scrap inspection program must include:
(1) A proven method for collecting representative samples and
measuring the oil and coatings content of scrap samples;
(2) A scrap inspector training program;
(3) An established correlation between visual inspection and
physical measurement of oil and coatings content of scrap samples;
(4) Periodic physical measurements of oil and coatings content of
randomly-selected scrap samples and comparison with visual inspection
results;
(5) A system for assuring that only acceptable scrap is charged to
an affected group 1 furnace; and
(6) Recordkeeping requirements to document conformance with plan
requirements.
(q) Monitoring of scrap contamination level by calculation method
for group 1 furnace without add-on air pollution control devices. The
owner or operator of a group 1 furnace dedicated to processing a
distinct type of furnace feed/charge composed of scrap with a uniform
composition (such as rejected product from a manufacturing process for
which the coating-to-scrap ratio can be documented) may include a
program in the site-specific monitoring plan for determining,
monitoring, and certifying the scrap contaminant level using a
calculation method rather than a scrap inspection program. A scrap
contaminant monitoring program using a calculation method must include:
(1) Procedures for the characterization and documentation of the
contaminant level of the scrap prior to the performance test.
(2) Limitations on the furnace feed/charge to scrap of the same
composition as that used in the performance test. If the performance
test was conducted with a mixture of scrap and clean charge, limitations
on the proportion of scrap in the furnace feed/
[[Page 71]]
charge to no greater than the proportion used during the performance
test.
(3) Operating, monitoring, recordkeeping, and reporting requirements
to ensure that no scrap with a contaminant level higher than that used
in the performance test is charged to the furnace.
(r) Group 2 furnace. These requirements apply to the owner or
operator of a new or existing group 2 furnace. The owner or operator
must:
(1) Record a description of the materials charged to each furnace,
including any nonreactive, non-HAP-containing/non-HAP-generating fluxing
materials or agents.
(2) Submit a certification of compliance with the applicable
operational standard for charge materials in Sec. 63.1506(o) for each
6-month reporting period. Each certification must contain the
information in Sec. 63.1516(b)(2)(v).
(s) Site-specific requirements for secondary aluminum processing
units. (1) An owner or operator of a secondary aluminum processing unit
at a facility must include, within the OM&M plan prepared in accordance
with Sec. 63.1510(b), the following information:
(i) The identification of each emission unit in the secondary
aluminum processing unit;
(ii) The specific control technology or pollution prevention measure
to be used for each emission unit in the secondary aluminum processing
unit and the date of its installation or application;
(iii) The emission limit calculated for each secondary aluminum
processing unit and performance test results with supporting
calculations demonstrating initial compliance with each applicable
emission limit;
(iv) Information and data demonstrating compliance for each emission
unit with all applicable design, equipment, work practice or operational
standards of this subpart; and
(v) The monitoring requirements applicable to each emission unit in
a secondary aluminum processing unit and the monitoring procedures for
daily calculation of the 3-day, 24-hour rolling average using the
procedure in Sec. 63.1510(t).
(2) The SAPU compliance procedures within the OM&M plan may not
contain any of the following provisions:
(i) Any averaging among emissions of differing pollutants;
(ii) The inclusion of any affected sources other than emission units
in a secondary aluminum processing unit;
(iii) The inclusion of any emission unit while it is shutdown; or
(iv) The inclusion of any periods of startup, shutdown, or
malfunction in emission calculations.
(3) To revise the SAPU compliance provisions within the OM&M plan
prior to the end of the permit term, the owner or operator must submit a
request to the applicable permitting authority containing the
information required by paragraph (s)(1) of this section and obtain
approval of the applicable permitting authority prior to implementing
any revisions.
(t) Secondary aluminum processing unit. Except as provided in
paragraph (u) of this section, the owner or operator must calculate and
record the 3-day, 24-hour rolling average emissions of PM, HCl, and D/F
for each secondary aluminum processing unit on a daily basis. To
calculate the 3-day, 24-hour rolling average, the owner or operator
must:
(1) Calculate and record the total weight of material charged to
each emission unit in the secondary aluminum processing unit for each
24-hour day of operation using the feed/charge weight information
required in paragraph (e) of this section. If the owner or operator
chooses to comply on the basis of weight of aluminum produced by the
emission unit, rather than weight of material charged to the emission
unit, all performance test emissions results and all calculations must
be conducted on the aluminum production weight basis.
(2) Multiply the total feed/charge weight to the emission unit, or
the weight of aluminum produced by the emission unit, for each emission
unit for the 24-hour period by the emission rate (in lb/ton of feed/
charge) for that emission unit (as determined during the performance
test) to provide emissions for each emission unit for the 24-hour
period, in pounds.
[[Page 72]]
(3) Divide the total emissions for each SAPU for the 24-hour period
by the total material charged to the SAPU, or the weight of aluminum
produced by the SAPU over the 24-hour period to provide the daily
emission rate for the SAPU.
(4) Compute the 24-hour daily emission rate using Equation 4:
[GRAPHIC] [TIFF OMITTED] TR23MR00.003
Where,
Eday = The daily PM, HCl, or D/F emission rate for the
secondary aluminum processing unit for the 24-hour period;
Ti = The total amount of feed, or aluminum produced, for
emission unit i for the 24-hour period (tons or Mg);
ERi = The measured emission rate for emission unit i as
determined in the performance test (lb/ton or [micro]g/Mg of feed/
charge); and
n = The number of emission units in the secondary aluminum processing
unit.
(5) Calculate and record the 3-day, 24-hour rolling average for each
pollutant each day by summing the daily emission rates for each
pollutant over the 3 most recent consecutive days and dividing by 3.
(u) Secondary aluminum processing unit compliance by individual
emission unit demonstration. As an alternative to the procedures of
paragraph (t) of this section, an owner or operator may demonstrate,
through performance tests, that each individual emission unit within the
secondary aluminum production unit is in compliance with the applicable
emission limits for the emission unit.
(v) Alternative monitoring method for lime addition. The owner or
operator of a lime-coated fabric filter that employs intermittent or
noncontinuous lime addition may apply to the Administrator for approval
of an alternative method for monitoring the lime addition schedule and
rate based on monitoring the weight of lime added per ton of feed/charge
for each operating cycle or time period used in the performance test. An
alternative monitoring method will not be approved unless the owner or
operator provides assurance through data and information that the
affected source will meet the relevant emission standards on a
continuous basis.
(w) Alternative monitoring methods. If an owner or operator wishes
to use an alternative monitoring method to demonstrate compliance with
any emission standard in this subpart, other than those alternative
monitoring methods which may be authorized pursuant to Sec.
63.1510(j)(5) and Sec. 63.1510(v), the owner or operator may submit an
application to the Administrator. Any such application will be processed
according to the criteria and procedures set forth in paragraphs (w)(1)
through (6) of this section.
(1) The Administrator will not approve averaging periods other than
those specified in this section.
(2) The owner or operator must continue to use the original
monitoring requirement until necessary data are submitted and approval
is received to use another monitoring procedure.
(3) The owner or operator shall submit the application for approval
of alternate monitoring methods no later than the notification of the
performance test. The application must contain the information specified
in paragraphs (w)(3) (i) through (iii) of this section:
(i) Data or information justifying the request, such as the
technical or economic infeasibility, or the impracticality of using the
required approach;
(ii) A description of the proposed alternative monitoring
requirements, including the operating parameters to be monitored, the
monitoring approach and technique, and how the limit is to be
calculated; and
(iii) Data and information documenting that the alternative
monitoring requirement(s) would provide equivalent or better assurance
of compliance with the relevant emission standard(s).
(4) The Administrator will not approve an alternate monitoring
application unless it would provide equivalent or better assurance of
compliance with the relevant emission standard(s). Before disapproving
any alternate monitoring application, the Administrator will provide:
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(i) Notice of the information and findings upon which the intended
disapproval is based; and
(ii) Notice of opportunity for the owner or operator to present
additional supporting information before final action is taken on the
application. This notice will specify how much additional time is
allowed for the owner or operator to provide additional supporting
information.
(5) The owner or operator is responsible for submitting any
supporting information in a timely manner to enable the Administrator to
consider the application prior to the performance test. Neither
submittal of an application nor the Administrator's failure to approve
or disapprove the application relieves the owner or operator of the
responsibility to comply with any provisions of this subpart.
(6) The Administrator may decide at any time, on a case-by-case
basis, that additional or alternative operating limits, or alternative
approaches to establishing operating limits, are necessary to
demonstrate compliance with the emission standards of this subpart.
[65 FR 15710, Mar. 23, 2000, as amended at 67 FR 59792, Sept. 24, 2002;
67 FR 79816, Dec. 30, 2002; 69 FR 53984, Sept. 3, 2004]