Document ID: EPA-HQ-OAR-2017-0664-0134
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2019-09-25T04:00Z

Redline Version of Proposed Subpart RRRRR RTR Amendments
                                   9/3/2019
Subpart RRRRR  -  National Emission Standards for Hazardous Air Pollutants for Taconite Iron Ore Processing
§63.9580   What is the purpose of this subpart?
This subpart establishes national emission standards for hazardous air pollutants (NESHAP) for taconite iron ore processing. This subpart also establishes requirements to demonstrate initial and continuous compliance with all applicable emission limitations (emission limits and operating limits), work practice standards, and operation and maintenance requirements in this subpart.
§63.9581   Am I subject to this subpart?
You are subject to this subpart if you own or operate a taconite iron ore processing plant that is (or is part of) a major source of hazardous air pollutant (HAP) emissions on the first compliance date that applies to you. Your taconite iron ore processing plant is a major source of HAP if it emits or has the potential to emit any single HAP at a rate of 10 tons or more per year or any combination of HAP at a rate of 25 tons or more per year.
§63.9582   What parts of my plant does this subpart cover?
(a) This subpart applies to each new and existing affected source at your taconite iron ore processing plant. 
(b) The affected sources are each new or existing ore crushing and handling operation, ore dryer, indurating furnace, and finished pellet handling operation at your taconite iron ore processing plant, as defined in §63.9652. 
(c) This subpart covers emissions from ore crushing and handling emission units, ore dryer stacks, indurating furnace stacks, finished pellet handling emission units, and fugitive dust emissions. 
(d) An ore crushing and handling operation, ore dryer, indurating furnace, or finished pellet handling operation at your taconite iron ore processing plant is existing if you commenced construction or reconstruction of the affected source before December 18, 2002. 
(e) An ore crushing and handling operation, ore dryer, indurating furnace, or finished pellet handling operation at your taconite iron ore processing plant is new if you commence construction or reconstruction of the affected source on or after December 18, 2002. An affected source is reconstructed if it meets the definition of reconstruction in §63.2. 
§63.9583   When do I have to comply with this subpart?
(a) If you have an affected source the construction or reconstruction of which is commenced before December 18, 2002, you must comply with each emission limitation, work practice standard, and operation and maintenance requirement in this subpart that applies to you no later than October 30, 2006, except as provided in paragraphs (f)(1) and (2) of this section. 
(b) If you have an affected source the construction or reconstruction of which is commenced on or after December 18, 2002, and its initial startup date is on or before October 30, 2003, you must comply with each emission limitation, work practice standard, and operation and maintenance requirement in this subpart that applies to you by October 30, 2003, except as noted in paragraphs (f)(1) and (2) of this section. 
(c) If you have an affected source and its initial startup date is after October 30, 2003, you must comply with each emission limitation, work practice standard, and operation and maintenance requirement in this subpart that applies to you upon initial startup, except as noted in paragraphs (f)(1) and (2) of this section. 
(d) If your taconite iron ore processing plant is an area source that becomes a major source of HAP, the compliance dates in paragraphs (d)(1) and (2) of this section apply to you. 
(1) Any portion of the taconite iron ore processing plant that is a new affected source or a new reconstructed source must be in compliance with this subpart upon startup, except as noted in paragraphs (f)(1) and (2) of this section. 
(2) All other parts of the taconite iron ore processing plant must be in compliance with this subpart no later than 3 years after the plant becomes a major source, except as noted in paragraphs (f)(1) and (2) of this section. 
(e) You must meet the notification and schedule requirements in §63.9640. Several of these notifications must be submitted before the compliance date for your affected source. 
(f)(1) If you have an affected source the construction or reconstruction of which is commenced before [INSERT DATE OF THE PUBLICATION OF THE PROPOSED RULE IN THE FEDERAL REGISTER], you must comply with the following requirements of this subpart by [DATE 180 DAYS AFTER DATE OF PUBLICATION OF FINAL RULE IN THE FEDERAL REGISTER]: §63.9590(b)(2); §63.9600(a); §63.9610(a) introductory text; §63.9621(a); §63.9622(b) introductory text, (b)(1), (b)(2), and (d)(2); §63.9623(b)(2); §63.9631(c); §63.9632(a)(3); §63.9634(b)(3), (f) introductory text, (f)(1), (f)(3), and (f)(4); §63.9637; §63.9641(b)(7)(ii),(b)(8)(ii), (b)(8)(iv), (c), (e), (g), (h), (i), and (j); §63.9642(a)(4), (a)(5), (a)(6), (b)(3); §63.9643(d); Table 2 to subpart RRRRR. 
(2) If you have an affected source the construction or reconstruction of which is commenced on or after [INSERT DATE OF THE PUBLICATION OF THE PROPOSED RULE IN THE FEDERAL REGISTER], you must comply with all the requirements of this subpart by [DATE OF PUBLICATION OF FINAL RULE IN THE FEDERAL REGISTER] or the date of startup, whichever is later.
§63.9590   What emission limitations must I meet?
(a) You must meet each emission limit in Table 1 to this subpart that applies to you. 
(b) You must meet each operating limit for control devices in paragraphs (b)(1) through (5) of this section that applies to you. 
(1) Except as provided in paragraph (b)(2) of this section, for each wet scrubber applied to meet any particulate matter emission limit in Table 1 to this subpart, you must maintain the daily average pressure drop and daily average scrubber water flow rate at or above the minimum levels established during the initial performance test. 
(2) For each dynamic wet scrubber applied to meet any particulate matter emission limit in Table 1 to this subpart, you must maintain the daily average scrubber water flow rate and the daily average fan amperage (a surrogate for fan speed as revolutions per minute) at or above the minimum levels established during the initial performance test. 
(3) For each dry electrostatic precipitator applied to meet any particulate matter emission limit in Table 1 to this subpart, you must meet the operating limits in paragraph (b)(3)(i) or (ii) of this section. 
(i) Maintain the 6-minute average opacity of emissions exiting the control device stack at or below the level established during the initial performance test. 
(ii) Maintain the daily average secondary voltage and daily average secondary current for each field at or above the minimum levels established during the initial performance test. 
(4) For each wet electrostatic precipitator applied to meet any particulate matter emission limit in Table 1 to this subpart, you must meet the operating limits in paragraphs (b)(4)(i) through (iii) of this section. 
(i) Maintain the daily average secondary voltage for each field at or above the minimum levels established during the initial performance test. 
(ii) Maintain the daily average stack outlet temperature at or below the maximum levels established during the initial performance test. 
(iii) Maintain the daily average water flow rate at or above the minimum levels established during the initial performance test. 
(5) If you use any air pollution control device other than a baghouse, wet scrubber, dynamic scrubber, dry electrostatic precipitator, or wet electrostatic precipitator, you must submit a site-specific monitoring plan in accordance with §63.9631(f). 
(c) You may petition the Administrator for approval of alternatives to the monitoring requirements in paragraphs (b)(1) through (4) of this section as allowed under §63.8(f) and as defined in §63.90. 
§63.9591   What work practice standards must I meet?
(a) You must prepare, and at all times operate according to, a fugitive dust emissions control plan that describes in detail the measures that will be put in place to control fugitive dust emissions from the locations listed in paragraphs (a)(1) through (6) of this section. 
(1) Stockpiles (includes, but is not limited to, stockpiles of uncrushed ore, crushed ore, or finished pellets); 
(2) Material transfer points; 
(3) Plant roadways; 
(4) Tailings basin; 
(5) Pellet loading areas; and 
(6) Yard areas. 
(b) A copy of your fugitive dust emissions control plan must be submitted for approval to the Administrator on or before the applicable compliance date for the affected source as specified in §63.9583. The requirement for the plant to operate according to the fugitive dust emissions control plan must be incorporated by reference in the operating permit for the plant that is issued by the designated permitting authority under 40 CFR part 70 or 40 CFR part 71. 
(c) You can use an existing fugitive dust emissions control plan provided it meets the requirements in paragraphs (c)(1) through (3) of this section. 
(1) The plan satisfies the requirements of paragraph (a) of this section. 
(2) The plan describes the current measures to control fugitive dust emission sources. 
(3) The plan has been approved as part of a State implementation plan or title V permit. 
(d) You must maintain a current copy of the fugitive dust emissions control plan onsite, and it must be available for inspection upon request. You must keep the plan for the life of the affected source or until the affected source is no longer subject to the requirements of this subpart. 
§63.9600   What are my operation and maintenance requirements?
(a) You must always operate and maintain any affected source, including associated air pollution control equipment and monitoring equipment, in a manner consistent with safety and good air pollution control practices for minimizing emissions. The general duty to minimize emissions does not require the owner or operator to make any further efforts to reduce emissions if levels required by the applicable standard have been achieved. Determination of whether such operation and maintenance procedures are being used will be based on information available to the Administrator which may include, but is not limited to, monitoring results, review of operation and maintenance procedures, review of operation and maintenance records, and inspection of the source.
(b) You must prepare, and at all times operate according to, a written operation and maintenance plan for each control device applied to meet any particulate matter emission limit in Table 1 to this subpart and to meet the requirement of each indurating furnace subject to good combustion practices (GCP). Each site-specific operation and maintenance plan must be submitted to the Administrator on or before the compliance date that is specified in §63.9583 for your affected source. The plan you submit must explain why the chosen practices (i.e., quantified objectives) are effective in performing corrective actions or GCP in minimizing the formation of formaldehyde (and other products of incomplete combustion). The Administrator will review the adequacy of the site-specific practices and objectives you will follow and the records you will keep to demonstrate compliance with your Plan. If the Administrator determines that any portion of your operation and maintenance plan is not adequate, we can reject those portions of the plan, and request that you provide additional information addressing the relevant issues. In the interim of this process, you will continue to follow your current site-specific practices and objectives, as submitted, until your revisions are accepted as adequate by the Administrator. You must maintain a current copy of the operation and maintenance plan onsite, and it must be available for inspection upon request. You must keep the plan for the life of the affected source or until the affected source is no longer subject to the requirements of this subpart. Each operation and maintenance plan must address the elements in paragraphs (b)(1) through (4) of this section. 
(1) Preventative maintenance for each control device, including a preventative maintenance schedule that is consistent with the manufacturer's instructions for routine and long-term maintenance. 
(2) Corrective action procedures for bag leak detection systems. In the event a bag leak detection system alarm is triggered, you must initiate corrective action to determine the cause of the alarm within 1 hour of the alarm, initiate corrective action to correct the cause of the problem within 24 hours of the alarm, and complete the corrective action as soon as practicable. If the alarm sounds more than 5 percent of the operating time during a 6-month period as determined according to §63.9634(d)(3), it is considered an operating parameter deviation. Corrective actions may include, but are not limited to, the actions listed in paragraphs (b)(2)(i) through (vi) of this section. 
(i) Inspecting the baghouse for air leaks, torn or broken bags or filter media, or any other condition that may cause an increase in emissions. 
(ii) Sealing off defective bags or filter media. 
(iii) Replacing defective bags or filter media or otherwise repairing the control device. 
(iv) Sealing off a defective baghouse compartment. 
(v) Cleaning the bag leak detection system probe, or otherwise repairing the bag leak detection system. 
(vi) Adjusting the process operation producing the particulate emissions. 
(3) Corrective action procedures for continuous parameter monitoring systems (CPMS) for all air pollution control devices except for baghouses. In the event you exceed an established operating limit for an air pollution control device except for a baghouse, you must initiate corrective action to determine the cause of the operating limit exceedance and complete the corrective action within 10 calendar days. The corrective action procedures you take must be consistent with the installation, operation, and maintenance procedures listed in your site-specific CPMS monitoring plan in accordance with §63.9632(b). 
(4) Good combustion practices for indurating furnaces. You must identify and implement a set of site-specific GCP for each type of indurating furnace at your plant. These GCP should correspond to your standard operating procedures for maintaining the proper and efficient combustion within each indurating furnace. Good combustion practices include, but are not limited to, the elements listed in paragraphs (b)(4)(i) through (v) of this section. 
(i) Proper operating conditions for each indurating furnace (e.g., minimum combustion temperature, maximum carbon monoxide concentration in the furnace exhaust gases, burner alignment, or proper fuel-air distribution/mixing). 
(ii) Routine inspection and preventative maintenance and corresponding schedules of each indurating furnace. 
(iii) Performance analyses of each indurating furnace. 
(iv) Keeping applicable operator logs. 
(v) Keeping applicable records to document compliance with each element. 
§63.9610   What are my general requirements for complying with this subpart?
(a) You must be in compliance with the requirements in paragraphs (a)(1) through (6) in this section at all times. 
(1) The emission limitations in §63.9590. 
(2) The work practice standards in §63.9591. 
(3) The operation and maintenance requirements in §63.9600. 
(4) The notification requirements in §63.9640. 
(5) The reporting requirements in §63.9641. 
(6) The recordkeeping requirements in §63.9642. 
(b) During the period between the compliance date specified for your affected source in §63.9583 and the date upon which continuous monitoring systems have been installed and certified and any applicable operating limits have been set, you must maintain a log detailing the operation and maintenance of the process and emissions control equipment. This includes the daily monitoring and recordkeeping of air pollution control device operating parameters as specified in §63.9590(b). 
(c) [Reserved]
§63.9620   On which units and by what date must I conduct performance tests or other initial compliance demonstrations?
(a) For each ore crushing and handling affected source, you must demonstrate initial compliance with the emission limits in Table 1 to this subpart by conducting an initial performance test for particulate matter as specified in paragraphs (a)(1) and (2) of this section. 
(1) Except as provided in paragraph (e) of this section, an initial performance test must be performed on all stacks associated with ore crushing and handling. 
(2) Initial performance tests must be completed no later than 180 calendar days after the compliance date specified in §63.9583. Performance tests conducted between October 30, 2003 and no later than 180 days after the corresponding compliance date can be used for initial compliance demonstration, provided the tests meet the initial performance testing requirements of this subpart. 
(b) For each indurating furnace affected source, you must demonstrate initial compliance with the emission limits in Table 1 to this subpart by conducting an initial performance test for particulate matter as specified in paragraphs (b)(1) and (2) of this section. 
(1) An initial performance test must be performed on all stacks associated with each indurating furnace. 
(2) Initial performance tests must be completed no later than 180 calendar days after the compliance date specified in §63.9583. Performance tests conducted between October 30, 2003 and no later than 180 days after the corresponding compliance date can be used for initial compliance demonstration, provided the tests meet the initial performance testing requirements of this subpart. For indurating furnaces with multiple stacks, the performance tests for all stacks must be completed within a reasonable period of time, such that the indurating furnace operating characteristics remain representative for the duration of the stack tests. 
(c) For each finished pellet handling affected source, you must demonstrate initial compliance with the emission limits in Table 1 to this subpart by conducting an initial performance test for particulate matter as specified in paragraphs (c)(1) and (2) of this section. 
(1) Except as provided in paragraph (e) of this section, an initial performance test must be performed on all stacks associated with finished pellet handling. 
(2) Initial performance tests must be completed no later than 180 calendar days after the compliance date specified in §63.9583. Performance tests conducted between October 30, 2003 and no later than 180 days after the corresponding compliance date can be used for initial compliance demonstration, provided the tests meet the initial compliance testing requirements of this subpart.
(d) For each ore dryer affected source, you must demonstrate initial compliance with the emission limits in Table 1 to this subpart by conducting an initial performance test for particulate matter as specified in paragraphs (d)(1) and (2) of this section.
(1) An initial performance test must be performed on all stacks associated with each ore dryer.
(2) Initial performance tests must be completed no later than 180 calendar days after the compliance date specified in §63.9583. Performance tests conducted between October 30, 2003 and no later than 180 days after the corresponding compliance date can be used for initial compliance demonstration, provided the tests meet the initial compliance testing requirements of this subpart. For ore dryers with multiple stacks, the performance tests for all stacks must be completed within a reasonable period of time, such that the ore dryer operating characteristics remain representative for the duration of the stack tests.
(e) For ore crushing and handling affected sources and finished pellet handling affected sources, in lieu of conducting initial performance tests for particulate matter on all stacks, you may elect to group a maximum of six similar emission units together and conduct an initial compliance test on one representative emission unit within each group of similar emission units. The determination of whether emission units are similar must meet the criteria in paragraph (f) of this section. If you decide to test representative emission units, you must prepare and submit a testing plan as described in paragraph (g) of this section.
(f) If you elect to test representative emission units as provided in paragraph (e) of this section, the units that are grouped together as similar units must meet the criteria in paragraphs (f)(1) and (2) of this section.
(1) All emission units within a group must be of the same process type (e.g., primary crushers, secondary crushers, tertiary crushers, fine crushers, ore conveyors, ore bins, ore screens, grate feed, pellet loadout, hearth layer, cooling stacks, pellet conveyor, and pellet screens). You cannot group emission units from different process types together for the purposes of this section.
(2) All emission units within a group must also have the same type of air pollution control device (e.g., wet scrubbers, dynamic wet scrubbers, rotoclones, multiclones, wet and dry electrostatic precipitators, and baghouses). You cannot group emission units with different air pollution control device types together for the purposes of this section.
 
(g) If you plan to conduct initial performance tests on representative emission units within an ore crushing and handling affected source or a finished pellet handling affected source, you must submit a testing plan for initial performance tests. This testing plan must be submitted to the Administrator or delegated authority no later than 90 days prior to the first scheduled initial performance test. The testing plan must contain the information specified in paragraphs (g)(1) through (3) of this section.
(1) A list of all emission units. This list must clearly identify all emission units that have been grouped together as similar emission units. Within each group of emission units, you must identify the emission unit that will be the representative unit for that group and subject to initial performance testing.
(2) A list of the process type and type of air pollution control device on each emission unit.
(3) A schedule indicating when you will conduct an initial performance test for particulate matter for each representative emission unit.
(h) For each work practice standard and operation and maintenance requirement that applies to you where initial compliance is not demonstrated using a performance test, you must demonstrate initial compliance within 30 calendar days after the compliance date that is specified for your affected source in §63.9583.
(i) If you commenced construction or reconstruction of an affected source between December 18, 2002 and October 30, 2003 , you must demonstrate initial compliance with either the proposed emission limit or the promulgated emission limit no later than 180 calendar days after October 30, 2003 or no later than 180 calendar days after startup of the source, whichever is later, according to §63.7(a)(2)(ix).
(j) If you commenced construction or reconstruction of an affected source between December 18, 2002 and October 30, 2003, and you chose to comply with the proposed emission limit when demonstrating initial compliance, you must conduct a second performance test to demonstrate compliance with the promulgated emission limit by 3 years and 180 calendar days after October 30, 2003, or after startup of the source, whichever is later, according to §63.7(a)(2)(ix).
§63.9621    What test methods and other procedures must I use to demonstrate initial compliance with the emission limits for particulate matter?
(a) You must conduct each performance test that applies to your affected source under normal maximum operating conditions of the affected source. The owner or operator may not conduct performance tests during periods of malfunction. The owner or operator must record the process information that is necessary to document operating conditions during the test and include in such record an explanation to support that such conditions represent normal operation. Upon request, the owner or operator shall make available to the Administrator such records as may be necessary to determine the conditions of performance tests. You must also conduct each performance test that applies to your affected source according to the requirements in paragraphs (b) and (c) of this section.
(b) For each ore crushing and handling affected source and each finished pellet handling affected source, you must determine compliance with the applicable emission limit for particulate matter in Table 1 to this subpart by following the test methods and procedures in paragraphs (b)(1) through (3) of this section.
(1) Except as provided in §63.9620(e), determine the concentration of particulate matter in the stack gas for each emission unit according to the test methods listed in paragraphs (b)(1)(i) through (v) of this section.
(i) Method 1 or 1A in appendix A-1 to part 60 of this chapter to select sampling port locations and the number of traverse points. Sampling ports must be located at the outlet of the control device and prior to any releases to the atmosphere.
(ii) Method 2, 2A, 2C, 2D, or 2F in appendix A-1 to part 60 of this chapter or Method 2G in appendix A-2 to part 60 of this chapter, as applicable, to determine the volumetric flow rate of the stack gas.
(iii) Method 3, 3A, or 3B in appendix A-2 to part 60 of this chapter to determine the dry molecular weight of the stack gas. The voluntary consensus standard ANSI/ASME PTC 19.10-1981 -- Part 10 (incorporated by reference -- see §63.14) may be used as an alternative to the manual procedures (but not instrumental procedures) in Method 3B.
(iv) Method 4 in appendix A-3 to part 60 of this chapter to determine the moisture content of the stack gas.
(v) Method 5 or 5D in appendix A-3 to part 60 of this chapter or Method 17 in appendix A-6 to part 60 of this chapter to determine the concentration of particulate matter.
(2) Each Method 5, 5D, or 17 performance test must consist of three separate runs. Each run must be conducted for a minimum of 1 hour. The average particulate matter concentration from the three runs will be used to determine compliance, as shown in Equation 1 of this section.
                                     (Eq. 1)
Where,
Ci = Average particulate matter concentration for emission unit, grains per dry standard cubic foot, (gr/dscf);
C1 = Particulate matter concentration for run 1 corresponding to emission unit, gr/dscf;
C2 = Particulate matter concentration for run 2 corresponding to emission unit, gr/dscf; and
C3 = Particulate matter concentration for run 3 corresponding to emission unit, gr/dscf.
(3) For each ore crushing and handling affected source and each finished pellet handling affected source, you must determine the flow-weighted mean concentration of particulate matter                         emissions from all emission units in each affected source following the procedure in paragraph (b)(3)(i) or (ii) of this section.
(i) If an initial performance test is conducted on all emission units within an affected source, calculate the flow-weighted mean concentration of particulate matter emissions from the affected source using Equation 2 of this section.
                                     (Eq. 2)
Where:
Ca = Flow-weighted mean concentration of particulate matter for all emission units within affected source, (gr/dscf);
Ci = Average particulate matter concentration measured during the performance test from emission unit "i" in affected source, as determined using Equation 1 of this section, gr/dscf;
Qi = Average volumetric flow rate of stack gas measured during the performance test from emission unit "i" in affected source, dscf/hr; and
n = Number of emission units in affected source.
(ii) If you are grouping similar emission units together in accordance with §63.9620(e), you must follow the procedures in paragraphs (b)(3)(ii)(A) through (C) of this section.
(A) Assign the average particulate matter concentration measured from the representative unit, as determined from Equation 1 of this section, to each emission unit within the corresponding group of similar units.
(B) Establish the maximum operating volumetric flow rate of exhaust gas from each emission unit within each group of similar units.
(C) Using the data from paragraphs (b)(3)(ii)(A) and (B) of this section, calculate the flow-weighted mean concentration of particulate matter emissions from the affected source using Equation 3 of this section.
                                     (Eq. 3)
Where:
Ca = Flow-weighted mean concentration of particulate matter for all emission units within affected source, gr/dscf;
Ck = Average particulate matter concentration measured during the performance test from the representative emission unit in group "k" of affected source "a," as determined using Equation 1 of this section, gr/dscf;
Qk = Sum of the maximum operating volumetric flow rates of stack gas from all similar emission units within group "k" of affected source, dscf/hr; and
m = Number of similar emission unit groups in affected source.
(c) For each ore dryer affected source and each indurating furnace affected source, you must determine compliance with the applicable emission limit for particulate matter in Table 1 to this subpart by following the test methods and procedures in paragraphs (c)(1) through (3) of this section.
(1) Determine the concentration of particulate matter for each stack according to the test methods listed in paragraphs (c)(1)(i) through (v) of this section.
(i) Method 1 or 1A in appendix A-1 to part 60 of this chapter to select sampling port locations and the number of traverse points. Sampling ports must be located at the outlet of the control device and prior to any releases to the atmosphere.
(ii) Method 2, 2A, 2C, 2D, or 2F in appendix A-1 to part 60 of this chapter or Method 2G in appendix A-2 to part 60 of this chapter, as applicable, to determine the volumetric flow rate of the stack gas.
(iii) Method 3, 3A, or 3B in appendix A-2 to part 60 of this chapter to determine the dry molecular weight of the stack gas. The voluntary consensus standard ANSI/ASME PTC 19.10-1981 -- Part 10 (incorporated by reference -- see §63.14) may be used as an alternative to the manual procedures (but not instrumental procedures) in Method 3B.
(iv) Method 4 in appendix A-3 to part 60 of this chapter to determine the moisture content of the stack gas.
(v) Method 5 or 5D in appendix A-3 to part 60 of this chapter or Method 17 in appendix A-6 to part 60 of this chapter to determine the concentration of particulate matter.
(2) Each Method 5, 5D, or 17 performance test must consist of three separate runs. Each run must be conducted for a minimum of 1 hour. The average particulate matter concentration from the three runs will be used to determine compliance, as shown in Equation 1 of this section.
(3) For each ore dryer and each indurating furnace with multiple stacks, calculate the flow-weighted mean concentration of particulate matter emissions using Equation 4 of this section.
                                     (Eq. 4)
Where:
Cb = Flow-weighted mean concentration of particulate matter for all stacks associated with affected source, gr/dscf;
Cj = Average particulate matter concentration measured during the performance test from stack "j" in affected source, as determined using Equation 1 of this section, gr/dscf;
Qj = Average volumetric flow rate of stack gas measured during the performance test from stack "j" in affected source, dscf/hr;
n = Number of stacks associated with affected source.
§63.9622   What test methods and other procedures must I use to establish and demonstrate initial compliance with the operating limits?
(a) For wet scrubbers subject to performance testing in §63.9620 and operating limits for pressure drop and scrubber water flow rate in §63.9590(b)(1), you must establish site-specific operating limits according to the procedures in paragraphs (a)(1) through (3) of this section. 
(1) Using the CPMS required in §63.9631(b), measure and record the pressure drop and scrubber water flow rate every 15 minutes during each run of the particulate matter performance test. 
(2) Calculate and record the average pressure drop and scrubber water flow rate for each individual test run. Your operating limits are established as the lowest average pressure drop and the lowest average scrubber water flow rate corresponding to any of the three test runs. 
(3) If a rod-deck venturi scrubber is applied to an indurating furnace to meet any particulate matter emission limit in Table 1 to this subpart, you may establish a lower average pressure drop operating limit by using historical average pressure drop data from a certified performance test completed on or after December 18, 2002 instead of using the average pressure drop value determined during the initial performance test, as specified in paragraph (a)(2) of this section. If historical average pressure drop data are used to establish an operating limit (i.e., using data from a certified performance test conducted prior to the promulgation date of the final rule), then the average particulate matter concentration corresponding to the historical performance test must be at or below the applicable indurating furnace emission limit, as listed in Table 1 to this subpart. 
(b) For dynamic wet scrubbers subject to performance testing in §63.9620 and operating limits for scrubber water flow rate and fan amperage in §63.9590(b)(2), you must establish site-specific operating limits according to the procedures in paragraphs (b)(1) and (2) of this section. 
(1) Using the CPMS required in §63.9631(b), measure and record the scrubber water flow rate and the fan amperage every 15 minutes during each run of the particulate matter performance test. 
(2) Calculate and record the average scrubber water flow rate and the average fan amperage for each individual test run. Your operating limits are established as the lowest average scrubber water flow rate and the lowest average fan amperage value corresponding to any of the three test runs. 
(c) For a dry electrostatic precipitator subject to performance testing in §63.9620 and operating limits in §63.9590(b)(3), you must establish a site-specific operating limit according to the procedures in paragraphs (c)(1) or (2) of this section. 
(1) If the operating limit for your dry electrostatic precipitator is a 6-minute average opacity of emissions value, then you must follow the requirements in paragraphs (c)(1)(i) through (iii) of this section. 
(i) Using the continuous opacity monitoring system (COMS) required in §63.9631(d)(1), measure and record the opacity of emissions from each control device stack during the particulate matter performance test. 
(ii) Compute and record the 6-minute opacity averages from 24 or more data points equally spaced over each 6-minute period (e.g., at 15-second intervals) during the test runs. 
(iii) Using the opacity measurements from a performance test that meets the emission limit, determine the opacity value corresponding to the 99 percent upper confidence level of a normal distribution of the 6-minute opacity averages. 
(2) If the operating limit for your dry electrostatic precipitator is the daily average secondary voltage and daily average secondary current for each field, then you must follow the requirements in paragraphs (c)(2)(i) and (ii) of this section. 
(i) Using the CPMS required in §63.9631(d)(2), measure and record the secondary voltage and secondary current for each dry electrostatic precipitator field every 15 minutes during each run of the particulate matter performance test. 
(ii) Calculate and record the average secondary voltage and secondary current for each dry electrostatic precipitator field for each individual test run. Your operating limits are established as the lowest average secondary voltage and secondary current value for each dry electrostatic precipitator field corresponding to any of the three test runs. 
(d) For a wet electrostatic precipitator subject to performance testing in §63.9620 and operating limit in §63.9590(b)(4), you must establish a site-specific operating limit according to the procedures in paragraphs (d)(1) and (2) of this section. 
(1) Using the CPMS required in §63.9631(e), measure and record the parametric values in paragraphs (d)(1)(i) through (iii) of this section for each wet electrostatic precipitator field every 15 minutes during each run of the particulate matter performance test. 
(i) Secondary voltage; 
(ii) Water flow rate; and 
(iii) Stack outlet temperature. 
(2) For each individual test run, calculate and record the average value for each operating parameter in paragraphs (d)(1)(i) through (iii) of this section for each wet electrostatic precipitator field. Your operating limits are established as the lowest average value for each operating parameter of secondary voltage and water flow rate corresponding to any of the three test runs, and the highest average value for each stack outlet temperature corresponding to any of the three test runs. 
(e) If you use an air pollution control device other than a wet scrubber, dynamic wet scrubber, dry electrostatic precipitator, wet electrostatic precipitator, or baghouse, and it is subject to performance testing in §63.9620, you must submit a site-specific monitoring plan in accordance with §63.9631(f). The site-specific monitoring plan must include the site-specific procedures for demonstrating initial and continuous compliance with the corresponding operating limits. 
(f) You may change the operating limits for any air pollution control device as long as you meet the requirements in paragraphs (f)(1) through (3) of this section. 
(1) Submit a written notification to the Administrator of your request to conduct a new performance test to revise the operating limit. 
(2) Conduct a performance test to demonstrate compliance with the applicable emission limitation in Table 1 to this subpart. 
(3) Establish revised operating limits according to the applicable procedures in paragraphs (a) through (e) of this section. 
§63.9623   How do I demonstrate initial compliance with the emission limitations that apply to me?
(a) For each affected source subject to an emission limit in Table 1 to this subpart, you must demonstrate initial compliance by meeting the emission limit requirements in paragraphs (a)(1) through (4) of this section. 
(1) For ore crushing and handling, the flow-weighted mean concentration of particulate matter, determined according to the procedures in §§63.9620(a) and 63.9621(b), must not exceed the emission limits in Table 1 to this subpart. 
(2) For indurating furnaces, the flow-weighted mean concentration of particulate matter, determined according to the procedures in §§63.9620(b) and 63.9621(c), must not exceed the emission limits in Table 1 to this subpart. 
(3) For finished pellet handling, the flow-weighted mean concentration of particulate matter, determined according to the procedures in §§63.9620(c) and 63.9621(b), must not exceed the emission limits in Table 1 to this subpart. 
(4) For ore dryers, the flow-weighted mean concentration of particulate matter, determined according to the procedures in §§63.9620(d) and 63.9621(c), must not exceed the emission limits in Table 1 to this subpart. 
(b) For each affected source subject to an emission limit in Table 1 to this subpart, you must demonstrate initial compliance by meeting the operating limit requirements in paragraphs (b)(1) through (5) of this section. 
(1) For each wet scrubber subject to performance testing in §63.9620 and operating limits for pressure drop and scrubber water flow rate in §63.9590(b)(1), you have established appropriate site-specific operating limits and have a record of the pressure drop and scrubber water flow rate measured during the performance test in accordance with §63.9622(a). 
(2) For each dynamic wet scrubber subject to performance testing in §63.9620 and operating limits for scrubber water flow rate and fan amperage in §63.9590(b)(2), you have established appropriate site-specific operating limits and have a record of the scrubber water flow rate and the fan amperage value, measured during the performance test in accordance with §63.9622(b).
(3) For each dry electrostatic precipitator subject to performance testing in §63.9620 and one of the operating limits in §63.9590(b)(3), you must meet the requirements in paragraph (b)(3)(i) or (ii) of this section.
(i) If you are subject to the operating limit for opacity in §63.9590(b)(3)(i), you have established appropriate site-specific operating limits and have a record of the opacity measured during the performance test in accordance with §63.9622(c)(1).
(ii) If you are subject to the operating limit for secondary voltage and secondary current in §63.9590(b)(3)(ii), you have established appropriate site-specific operating limits and have a record of the secondary voltage and secondary current measured during the performance test in accordance with §63.9622(c)(2).
(4) For each wet electrostatic precipitator subject to performance testing in §63.9620 and operating limits for secondary voltage, water flow rate, and stack outlet temperature in §63.9590(b)(4), you have established appropriate site-specific operating limits and have a record of the secondary voltage, water flow rate, and stack outlet temperature measured during the performance test in accordance with §63.9622(d).
(5) For other air pollution control devices subject to performance testing in §63.9620 and operating limits in accordance with §63.9590(b)(5), you have submitted a site-specific monitoring plan in accordance with §63.9631(f) and have a record of the site-specific operating limits as measured during the performance test in accordance with §63.9622(e).
(c) For each emission limitation and operating limit that applies to you, you must submit a notification of compliance status according to §63.9640(e).
§63.9624   How do I demonstrate initial compliance with the work practice standards that apply to me?
You must demonstrate initial compliance with the work practice standards by meeting the requirements in paragraphs (a) through (c) of this section.
(a) You must prepare a fugitive dust emissions control plan in accordance with the requirements in §63.9591.
(b) You must submit to the Administrator the fugitive dust emissions control plan in accordance with the requirements in §63.9591.
(c) You must implement each control practice according to the procedures specified in your fugitive dust emissions control plan.
§63.9625   How do I demonstrate initial compliance with the operation and maintenance requirements that apply to me?
For each air pollution control device subject to operating limits in §63.9590(b), you have demonstrated initial compliance with the operation and maintenance requirements if you meet all of the requirements in paragraphs (a) through (d) of this section.
(a) You have prepared the operation and maintenance plan for air pollution control devices in accordance with §63.9600(b).
(b) You have operated each air pollution control device according to the procedures in the operation and maintenance plan.
(c) You have submitted a notification of compliance status according to the requirements in §63.9640(e).
(d) You have prepared a site-specific monitoring plan in accordance with §63.9632(b).
§63.9630   When must I conduct subsequent performance tests?
(a) You must conduct subsequent performance tests to demonstrate continued compliance with the ore crushing and handling emission limits in Table 1 to this subpart according to the schedule developed by your permitting authority and shown in your title V permit. If a title V permit has not been issued, you must submit a testing plan and schedule, containing the information specified in paragraph (e) of this section, to the permitting authority for approval.
(b) You must conduct subsequent performance tests on all stacks associated with indurating furnaces to demonstrate continued compliance with the indurating furnace emission limits in Table 1 to this subpart according to the schedule developed by your permitting authority and shown in your title V permit, but no less frequent than twice per 5-year permit term. If a title V permit has not been issued, you must submit a testing plan and schedule, containing the information specified in paragraph (e) of this section, to the permitting authority for approval. For indurating furnaces with multiple stacks, the performance tests for all stacks associated with that indurating furnace must be conducted within a reasonable period of time, such that the indurating furnace operating characteristics remain representative for the duration of the stack tests.
(c) You must conduct subsequent performance tests to demonstrate continued compliance with the finished pellet handling emission limits in Table 1 to this subpart according to the schedule developed by your permitting authority and shown in your title V permit. If a title V permit has not been issued, you must submit a testing plan and schedule, containing the information specified in paragraph (e) of this section, to the permitting authority for approval.
(d) You must conduct subsequent performance tests on all stacks associated with ore dryers to demonstrate continued compliance with the ore dryer emission limits in Table 1 to this subpart according to the schedule developed by your permitting authority and shown in your title V permit. If a title V permit has not been issued, you must submit a testing plan and schedule, containing the information specified in paragraph (e) of this section, to the permitting authority for approval. For ore dryers with multiple stacks, the performance tests for all stacks associated with an ore dryer must be conducted within a reasonable period of time, such that the ore dryer operating characteristics remain representative for the duration of the stack tests.
(e) If your plant does not have a title V permit, you must submit a testing plan for subsequent performance tests as required in paragraphs (a) through (d) of this section. This testing plan must be submitted to the Administrator on or before the compliance date that is specified in §63.9583. The testing plan must contain the information specified in paragraphs (e)(1) and (2) of this section. You must maintain a current copy of the testing plan onsite, and it must be available for inspection upon request. You must keep the plan for the life of the affected source or until the affected source is no longer subject to the requirements of this subpart.
(1) A list of all emission units.
(2) A schedule indicating when you will conduct subsequent performance tests for particulate matter for each of the emission units.
§63.9631   What are my monitoring requirements?
(a) For each baghouse applied to meet any particulate matter emission limit in Table 1 to this subpart, you must install, operate, and maintain a bag leak detection system to monitor the relative change in particulate matter loadings according to the requirements in §63.9632(a), and conduct inspections at their specified frequencies according to the requirements in paragraphs (a)(1) through (a)(6) and (a)(8). For each baghouse applied to meet any particulate matter emission limit in Table 1 to this subpart that is not required by §63.9632(a) to be equipped with a bag leak detection system, you must conduct inspections at their specified frequencies according to the requirements in paragraphs (a)(1) through (8) of this section.
(1) Monitor the pressure drop across each baghouse cell each day to ensure pressure drop is within the normal operating range.
(2) Confirm that dust is being removed from hoppers through weekly visual inspections or other means of ensuring the proper functioning of removal mechanisms.
(3) Check the compressed air supply of pulse-jet baghouses each day.
(4) Monitor cleaning cycles to ensure proper operation using an appropriate methodology.
(5) Check bag cleaning mechanisms for proper functioning through monthly visual inspections or equivalent means.
(6) Make monthly visual checks of bag tension on reverse air and shaker-type baghouses to ensure that bags are not kinked (kneed or bent) or lying on their sides. You do not have to make this check for shaker-type baghouses that have self-tensioning (spring-loaded) devices.
(7) Confirm the physical integrity of the baghouse through quarterly visual inspections of the baghouse interior for air leaks.
(8) Inspect fans for wear, material buildup, and corrosion through quarterly visual inspections, vibration detectors, or equivalent means.
(b) Except as provided in paragraph (c) of this section, for each wet scrubber subject to the operating limits for pressure drop and scrubber water flow rate in §63.9590(b)(1), you must install, operate, and maintain a CPMS according to the requirements in §63.9632(b) through (e) and monitor the daily average pressure drop and daily average scrubber water flow rate according to the requirements in §63.9633.
(c) For each dynamic wet scrubber subject to the scrubber water flow rate and the fan amperage operating limits in §63.9590(b)(2), you must install, operate, and maintain a CPMS according to the requirements in §63.9632(b) through (e) and monitor the daily average scrubber water flow rate and the daily average fan amperage according to the requirements in §63.9633.
(d) For each dry electrostatic precipitator subject to the operating limits in §63.9590(b)(3), you must follow the monitoring requirements in paragraph (d)(1) or (2) of this section.
(1) If the operating limit you choose to monitor is the 6-minute average opacity of emissions in accordance with §63.9590(b)(3)(i), you must install, operate, and maintain a COMS according to the requirements in §63.9632(f) and monitor the 6-minute average opacity of emissions exiting each control device stack according to the requirements in §63.9633.
(2) If the operating limit you choose to monitor is average secondary voltage and average secondary current for each dry electrostatic precipitator field in accordance with §63.9590(b)(3)(ii), you must install, operate, and maintain a CPMS according to the requirements in §63.9632(b) through (e) and monitor the daily average secondary voltage and daily average secondary current according to the requirements in §63.9633.
(e) For each wet electrostatic precipitator subject to the operating limits in §63.9590(b)(4), you must install, operate, and maintain a CPMS according to the requirements in §63.9632(b) through (e) and monitor the daily average secondary voltage, daily average stack outlet temperature, and daily average water flow rate according to the requirements in §63.9633.
(f) If you use any air pollution control device other than a baghouse, wet scrubber, dry electrostatic precipitator, or wet electrostatic precipitator, you must submit a site-specific monitoring plan that includes the information in paragraphs (f)(1) through (4) of this section. The monitoring plan is subject to approval by the Administrator. You must maintain a current copy of the monitoring plan onsite, and it must be available for inspection upon request. You must keep the plan for the life of the affected source or until the affected source is no longer subject to the requirements of this subpart.
(1) A description of the device.
(2) Test results collected in accordance with §63.9621 verifying the performance of the device for reducing emissions of particulate matter to the atmosphere to the levels required by this subpart.
(3) A copy of the operation and maintenance plan required in §63.9600(b).
(4) Appropriate operating parameters that will be monitored to maintain continuous compliance with the applicable emission limitation(s).
§63.9632   What are the installation, operation, and maintenance requirements for my monitoring equipment?
(a) For each negative pressure baghouse or positive pressure baghouse equipped with a stack, applied to meet any particulate emission limit in Table 1 to this subpart, you must install, operate, and maintain a bag leak detection system according to the requirements in paragraphs (a)(1) through (9) of this section.
(1) A bag leak detection system installed before [INSERT DATE OF THE PUBLICATION OF THE PROPOSED RULE IN THE FEDERAL REGISTER], must be certified by the manufacturer to be capable of detecting emissions of particulate matter at concentrations of 10 milligrams per actual cubic meter (0.0044 grains per actual cubic foot) or less. A bag leak detection system installed after [INSERT DATE OF THE PUBLICATION OF THE PROPOSED RULE IN THE FEDERAL REGISTER], must be certified by the manufacturer to be capable of detecting emissions of particulate matter at concentrations of 1 milligram per actual cubic meter (0.00044 grains per actual cubic foot) or less.
(2) The system must provide output of relative changes in particulate matter loadings.
(3) The bag leak detection system must be equipped with a device to continuously record the output signal from the sensor.
(4) The system must be equipped with an alarm that will sound when an increase in relative particulate loadings is detected over the alarm level set point established according to paragraph (a)(5) of this section. The alarm must be located such that it can be heard by the appropriate plant personnel.
(5) For each bag leak detection system, you must develop and submit to the Administrator for approval, a site-specific monitoring plan that addresses the items identified in paragraphs (a)(5)(i) through (v) of this section. For each bag leak detection system that operates based on the triboelectric effect, the monitoring plan shall be consistent with the recommendations contained in the U.S. Environmental Protection Agency (U.S. EPA) guidance document, "Fabric Filter Bag Leak Detection Guidance" (EPA-454/R-98-015) (incorporated by reference -- see §63.14). This document is available on the EPA's  at . You must operate and maintain the bag leak detection system according to the site-specific monitoring plan at all times. The plan shall describe all of the items in paragraphs (a)(5)(i) through (v) of this section.
(i) Installation of the bag leak detection system.
(ii) Initial and periodic adjustment of the bag leak detection system including how the alarm set-point will be established.
(iii) Operation of the bag leak detection system including quality assurance procedures.
(iv) How the bag leak detection system will be maintained including a routine maintenance schedule and spare parts inventory list.
(v) How the bag leak detection system output shall be recorded and stored.
(6) To make the initial adjustment of the system, establish the baseline output by adjusting the sensitivity (range) and the averaging period of the device. Then, establish the alarm set points and the alarm delay time (if applicable).
(7) Following initial adjustment, do not adjust sensitivity or range, averaging period, alarm set point, or alarm delay time, without approval from the Administrator except as provided for in paragraph (a)(7)(i) of this section. In no event may the sensitivity be increased more than 100 percent or decreased by more than 50 percent over a 365-day period unless such adjustment follows a complete baghouse inspection that demonstrates the baghouse is in good operating condition.
(i) Once per quarter, you may adjust the sensitivity or range of the bag leak detection system to account for seasonal effects, including temperature and humidity, according to the procedures identified in the site-specific monitoring plan required under paragraph (a)(5) of this section.
(ii) [Reserved]
(8) Where multiple detectors are required, the system's instrumentation and alarm may be shared among detectors.
(9) The bag leak detector sensor must be installed downstream of the baghouse and upstream of any wet scrubber.
(b) For each CPMS required in §63.9631, you must develop and make available for inspection upon request by the permitting authority a site-specific monitoring plan that addresses the requirements in paragraphs (b)(1) through (7) of this section.
(1) Installation of the CPMS sampling probe or other interface at a measurement location relative to each affected emission unit such that the measurement is representative of control of the exhaust emissions (e.g., on or downstream of the last control device).
(2) Performance and equipment specifications for the sample interface, the parametric signal analyzer, and the data collection and reduction system.
(3) Performance evaluation procedures, a schedule for performing such procedures, and acceptance criteria (e.g., calibrations), as well as corrective action to be taken if a performance evaluation does not meet the acceptance criteria. If a CPMS calibration fails, the CPMS is considered to be inoperative until you take corrective action and the system passes calibration.
(4) Ongoing operation and maintenance procedures and a schedule for preventative maintenance procedures, in a manner consistent with good air pollution control practices and in accordance with the general requirements of §63.8(c)(1)(ii), (3), (4)(ii), (7), and (8).
(5) Ongoing data quality assurance procedures in accordance with the general requirements of §63.8(d)(1) and (2). The owner or operator shall keep these written procedures on record for the life of the affected source or until the affected source is no longer subject to the provisions of this part, to be made available for inspection, upon request, by the Administrator. If the performance evaluation plan is revised, the owner or operator shall keep previous (i.e., superseded) versions of the performance evaluation plan on record to be made available for inspection, upon request, by the Administrator, for a period of 5 years after each revision to the plan.
(6) Ongoing recordkeeping and reporting procedures in accordance with the general requirements of §63.10(c)(1) through (14), (e)(1), and (e)(2)(i).
(7) Corrective action procedures that you will follow in the event an air pollution control device, except for a baghouse, exceeds an established operating limit as required in §63.9600(b)(3).
(c) Unless otherwise specified, each CPMS must meet the requirements in paragraphs (c)(1) and (2) of this section.
(1) Each CPMS must complete a minimum of one cycle of operation for each successive 15-minute period and must have valid data for at least 95 percent of every daily averaging period.
(2) Each CPMS must determine and record the daily average of all recorded readings.
(d) You must conduct a performance evaluation of each CPMS in accordance with your site-specific monitoring plan.
(e) You must operate and maintain the CPMS in continuous operation according to the site-specific monitoring plan.
(f) For each dry electrostatic precipitator subject to the opacity operating limit in §63.9590(b)(3)(i), you must install, operate, and maintain each COMS according to the requirements in paragraphs (f)(1) through (4) of this section.
(1) You must install each COMS and conduct a performance evaluation of each COMS according to §63.8 and Performance Specification 1 in appendix B to 40 CFR part 60.
(2) You must develop and implement a quality control program for operating and maintaining each COMS according to §63.8(a) and (b), (c)(1)(ii), (c)(2) through (8), (d)(1) and (2), and (e) through (g) and Procedure 3 in appendix F to 40 CFR part 60. At a minimum, the quality control program must include a daily calibration drift assessment, quarterly performance audit, and annual zero alignment of each COMS.
(3) You must operate and maintain each COMS according to §63.8(e) and your quality control program. You must also identify periods the COMS is out of control, including any periods that the COMS fails to pass a daily calibration drift assessment, quarterly performance audit, or annual zero alignment audit.
(4) You must determine and record the 6-minute average opacity for periods during which the COMS is not out of control. All COMS must complete a minimum of one cycle of sampling and analyzing for each successive 10-second period and one cycle of data recording for each successive 6-minute period.

§63.9633   How do I monitor and collect data to demonstrate continuous compliance?
(a) Except for monitoring malfunctions, out of control periods, associated repairs, and required quality assurance or control activities (including as applicable, calibration checks and required zero and span adjustments), you must monitor continuously (or collect data at all required intervals) at all times an affected source is operating.
(b) You may not use data recorded during monitoring malfunctions, out of control periods, associated repairs, and required quality assurance or control activities in data averages and calculations used to report emission or operating levels, or to fulfill a minimum data availability requirement. You must use all the data collected during all other periods in assessing compliance.
(c) A monitoring malfunction is any sudden, infrequent, not reasonably preventable failure of the monitoring system to provide valid data. Monitoring failures that are caused in part by poor maintenance or careless operation are not considered malfunctions.
§63.9634   How do I demonstrate continuous compliance with the emission limitations that apply to me?
(a) For each affected source subject to an emission limit in Table 1 to this subpart, you must demonstrate continuous compliance by meeting the requirements in paragraphs (b) through (f) of this section.
(b) For ore crushing and handling affected sources and finished pellet handling affected sources, you must demonstrate continuous compliance by meeting the requirements in paragraphs (b)(1) through (3) of this section.
(1) The flow-weighted mean concentration of particulate matter for all ore crushing and handling emission units and for all finished pellet handling emission units must be maintained at or below the emission limits in Table 1 to this subpart.
(2) You must conduct subsequent performance tests for emission units in the ore crushing and handling and finished pellet handling affected sources following the schedule in your title V permit. If a title V permit has not been issued, you must conduct subsequent performance tests according to a testing plan approved by the Administrator or delegated authority.
(3) For ore crushing and handling and finished pellet handling emission units not selected for initial performance testing and defined within a group of similar emission units in accordance with §63.9620(e), the site-specific operating limits established for the emission unit selected as representative of a group of similar emission units will be used as the operating limit for each emission unit within the group. The operating limit established for the representative unit must be met by each emission unit within the group.
 
                                       

(c) For ore dryers and indurating furnaces, you must demonstrate continuous compliance by meeting the requirements in paragraphs (c)(1) and (2) of this section.
(1) The flow-weighted mean concentration of particulate matter for all stacks from the ore dryer or indurating furnace must be maintained at or below the emission limits in Table 1 to this subpart.
(2) For ore dryers, you must conduct subsequent performance tests following the schedule in your title V permit. For indurating furnaces, you must conduct subsequent performance tests following the schedule in your title V permit, but no less frequent than twice per 5-year permit term. If a title V permit has not been issued, you must conduct subsequent performance tests according to a testing plan approved by the Administrator or delegated authority.
(d) For each baghouse applied to meet any particulate emission limit in Table 1 to this subpart, you must demonstrate continuous compliance by completing the requirements in paragraphs (d)(1) through (3) of this section.
(1) Maintaining records of the time you initiated corrective action in the event of a bag leak detection system alarm, the corrective action(s) taken, and the date on which corrective action was completed.
(2) Inspecting and maintaining each baghouse according to the requirements in §63.9631(a) and recording all information needed to document conformance with these requirements. If you increase or decrease the sensitivity of the bag leak detection system beyond the limits specified in your site-specific monitoring plan, you must include a copy of the required written certification by a responsible official in the next semiannual compliance report.
(3) Each bag leak detection system must be operated and maintained such that the alarm does not sound more than 5 percent of the operating time during a 6-month period. Calculate the alarm time as specified in paragraphs (d)(3)(i) through (iii) of this section.
(i) If inspection of the fabric filter demonstrates that no corrective action is required, no alarm time is counted.
(ii) If corrective action is required, each alarm time (i.e., time that the alarm sounds) is counted as a minimum of 1 hour.
(iii) If it takes longer than 1 hour to initiate corrective action, each alarm time is counted as the actual amount of time taken to initiate corrective action.
(e) Except as provided in paragraph (f) of this section, for each wet scrubber subject to the operating limits for pressure drop and scrubber water flow rate in §63.9590(b)(1), you must demonstrate continuous compliance by completing the requirements of paragraphs (e)(1) through (4) of this section.
(1) Maintaining the daily average pressure drop and daily average scrubber water flow rate at or above the minimum levels established during the initial or subsequent performance test.
(2) Operating and maintaining each wet scrubber CPMS according to §63.9632(b) and recording all information needed to document conformance with these requirements.
(3) Collecting and reducing monitoring data for pressure drop and scrubber water flow rate according to §63.9632(c) and recording all information needed to document conformance with these requirements.
(4) If the daily average pressure drop or daily average scrubber water flow rate is below the operating limits established for a corresponding emission unit or group of similar emission units, you must then follow the corrective action procedures in paragraph (j) of this section.
(f) For each dynamic wet scrubber subject to the operating limits for scrubber water flow rate and the fan amperage in §63.9590(b)(2), you must demonstrate continuous compliance by completing the requirements of paragraphs (f)(1) through (4) of this section.
(1) Maintaining the daily average scrubber water flow rate and the daily average fan amperage at or above the minimum levels established during the initial or subsequent performance test.
(2) Operating and maintaining each dynamic wet scrubber CPMS according to §63.9632(b) and recording all information needed to document conformance with these requirements.
(3) Collecting and reducing monitoring data for scrubber water flow rate and fan amperage according to §63.9632(c) and recording all information needed to document conformance with these requirements.
(4) If the daily average scrubber water flow rate or daily average fan amperage, is below the operating limits established for a corresponding emission unit or group of similar emission units, you must then follow the corrective action procedures in paragraph (j) of this section.
(g) For each dry electrostatic precipitator subject to operating limits in §63.9590(b)(3), you must demonstrate continuous compliance by completing the requirements of paragraph (g)(1) or (2) of this section.
(1) If the operating limit for your dry electrostatic precipitator is a 6-minute average opacity of emissions value, then you must follow the requirements in paragraphs (g)(1)(i) through (iii) of this section.
(i) Maintaining the 6-minute average opacity of emissions at or below the maximum level established during the initial or subsequent performance test.
(ii) Operating and maintaining each COMS and reducing the COMS data according to §63.9632(f).
(iii) If the 6-minute average opacity of emissions is above the operating limits established for a corresponding emission unit, you must then follow the corrective action procedures in paragraph (j) of this section.
(2) If the operating limit for your dry electrostatic precipitator is the daily average secondary voltage and daily average secondary current for each field, then you must follow the requirements in paragraphs (g)(2)(i) through (iv) of this section.
(i) Maintaining the daily average secondary voltage or daily average secondary current for each field at or above the minimum levels established during the initial or subsequent performance test.
(ii) Operating and maintaining each dry electrostatic precipitator CPMS according to §63.9632(b) and recording all information needed to document conformance with these requirements.
(iii) Collecting and reducing monitoring data for secondary voltage or secondary current for each field according to §63.9632(c) and recording all information needed to document conformance with these requirements.
(iv) If the daily average secondary voltage or daily average secondary current for each field is below the operating limits established for a corresponding emission unit, you must then follow the corrective action procedures in paragraph (j) of this section.
(h) For each wet electrostatic precipitator subject to the operating limits for secondary voltage, stack outlet temperature, and water flow rate in §63.9590(b)(4), you must demonstrate continuous compliance by completing the requirements of paragraphs (h)(1) through (4) of this section.
(1) Maintaining the daily average secondary voltage and daily average scrubber water flow rate for each field at or above the minimum levels established during the initial or subsequent performance test. Maintaining the daily average stack outlet temperature at or below the maximum levels established during the initial or subsequent performance test.
(2) Operating and maintaining each wet electrostatic precipitator CPMS according to §63.9632(b) and recording all information needed to document conformance with these requirements.
(3) Collecting and reducing monitoring data for secondary voltage, stack outlet temperature, and water flow rate according to §63.9632(c) and recording all information needed to document conformance with these requirements.
(4) If the daily average secondary voltage, stack outlet temperature, or water flow rate does not meet the operating limits established for a corresponding emission unit, you must then follow the corrective action procedures in paragraph (j) of this section.
(i) If you use an air pollution control device other than a wet scrubber, dynamic wet scrubber, dry electrostatic precipitator, wet electrostatic precipitator, or baghouse, you must submit a site-specific monitoring plan in accordance with §63.9631(f). The site-specific monitoring plan must include the site-specific procedures for demonstrating initial and continuous compliance with the corresponding operating limits.
(j) If the daily average operating parameter value for an emission unit or group of similar emission units does not meet the corresponding established operating limit, you must then follow the procedures in paragraphs (j)(1) through (4) of this section.
(1) You must initiate and complete initial corrective action within 10 calendar days and demonstrate that the initial corrective action was successful. During any period of corrective action, you must continue to monitor and record all required operating parameters for equipment that remains in operation. After the initial corrective action, if the daily average operating parameter value for the emission unit or group of similar emission units meets the operating limit established for the corresponding unit or group, then the corrective action was successful and the emission unit or group of similar emission units is in compliance with the established operating limits.
(2) If the initial corrective action required in paragraph (j)(1) of this section was not successful, then you must complete additional corrective action within 10 calendar days and demonstrate that the subsequent corrective action was successful. During any period of corrective action, you must continue to monitor and record all required operating parameters for equipment that remains in operation. If the daily average operating parameter value for the emission unit or group of similar emission units meets the operating limit established for the corresponding unit or group, then the corrective action was successful and the emission unit or group of similar emission units is in compliance with the established operating limits.
(3) If the second attempt at corrective action required in paragraph (j)(2) of this section was not successful, then you must repeat the procedures of paragraph (j)(2) of this section until the corrective action is successful. If the third attempt at corrective action is unsuccessful, you must conduct another performance test in accordance with the procedures in §63.9622(f) and report to the Administrator as a deviation the third unsuccessful attempt at corrective action.
(4) After the third unsuccessful attempt at corrective action, you must submit to the Administrator the written report required in paragraph (j)(3) of this section within 5 calendar days after the third unsuccessful attempt at corrective action. This report must notify the Administrator that a deviation has occurred and document the types of corrective measures taken to address the problem that resulted in the deviation of established operating parameters and the resulting operating limits.
§63.9635   How do I demonstrate continuous compliance with the work practice standards that apply to me?
(a) You must demonstrate continuous compliance with the work practice standard requirements in §63.9591 by operating in accordance with your fugitive dust emissions control plan at all times.
(b) You must maintain a current copy of the fugitive dust emissions control plan required in §63.9591 onsite and it must be available for inspection upon request. You must keep the plan for the life of the affected source or until the affected source is no longer subject to the requirements of this subpart.
§63.9636   How do I demonstrate continuous compliance with the operation and maintenance requirements that apply to me?
(a) For each control device subject to an operating limit in §63.9590(b), you must demonstrate continuous compliance with the operation and maintenance requirements in §63.9600(b) by completing the requirements of paragraphs (a)(1) through (4) of this section.
(1) Performing preventative maintenance for each control device in accordance with §63.9600(b)(1) and recording all information needed to document conformance with these requirements;
(2) Initiating and completing corrective action for a bag leak detection system alarm in accordance with §63.9600(b)(2) and recording all information needed to document conformance with these requirements;
(3) Initiating and completing corrective action for a CPMS when you exceed an established operating limit for an air pollution control device except for a baghouse in accordance with §63.9600(b)(3) and recording all information needed to document conformance with these requirements; and
(4) Implementing and maintaining site-specific good combustion practices for each indurating furnace in accordance with §63.9600(b)(4) and recording all information needed to document conformance with these requirements.
(b) You must maintain a current copy of the operation and maintenance plan required in §63.9600(b) onsite, and it must be available for inspection upon request. You must keep the plan for the life of the affected source or until the affected source is no longer subject to the requirements of this subpart.
§63.9637   What other requirements must I meet to demonstrate continuous compliance?
(a) Deviations. You must report each instance in which you did not meet each emission limitation in Table 1 to this subpart that applies to you. You also must report each instance in which you did not meet the work practice standards in §63.9591 and each instance in which you did not meet each operation and maintenance requirement in §63.9600 that applies to you. These instances are deviations from the emission limitations, work practice standards, and operation and maintenance requirements in this subpart. These deviations must be reported in accordance with the requirements in §63.9641.
(b) [Reserved]

§63.9640   What notifications must I submit and when?
(a) You must submit all of the notifications in §§63.7(b) and (c), 63.8(f)(4), and 63.9(b) through (h) that apply to you by the specified dates.
(b) As specified in §63.9(b)(2), if you start up your affected source before October 30, 2003, you must submit your initial notification no later than 120 calendar days after October 30, 2003.
(c) As specified in §63.9(b)(3), if you start up your new affected source on or after October 30, 2003, you must submit your initial notification no later than 120 calendar days after you become subject to this subpart.
(d) If you are required to conduct a performance test, you must submit a notification of intent to conduct a performance test at least 60 calendar days before the performance test is scheduled to begin, as required in §63.7(b)(1).
(e) If you are required to conduct a performance test or other initial compliance demonstration, you must submit a notification of compliance status according to §63.9(h)(2)(ii). The initial notification of compliance status must be submitted by the dates specified in paragraphs (e)(1) and (2) of this section.
(1) For each initial compliance demonstration that does not include a performance test, you must submit the notification of compliance status before the close of business on the 30th calendar day following completion of the initial compliance demonstration.
(2) For each initial compliance demonstration that does include a performance test, you must submit the notification of compliance status, including the performance test results, before the close of business on the 60th calendar day following the completion of the performance test according to §63.10(d)(2). If the performance test results have been submitted electronically in accordance with §63.9641(f), the process unit(s) tested, the pollutant(s) tested, and the date that such performance test was conducted may be submitted in the notification of compliance status report in lieu of the performance test results. The performance test results must be submitted to the Compliance and Emissions Data Reporting Interface (CEDRI) by the date the notification of compliance status report is submitted.
§63.9641   What reports must I submit and when?
(a) Compliance report due dates. Unless the Administrator has approved a different schedule, you must submit a semiannual compliance report to your permitting authority according to the requirements in paragraphs (a)(1) through (5) of this section.
(1) The first compliance report must cover the period beginning on the compliance date that is specified for your affected source in §63.9583 and ending on June 30 or December 31, whichever date comes first after the compliance date that is specified for your source in §63.9583.
(2) The first compliance report must be electronically submitted, postmarked or delivered no later than July 31 or January 31, whichever date comes first after your first compliance report is due.
(3) Each subsequent compliance report must cover the semiannual reporting period from January 1 through June 30 or the semiannual reporting period from July 1 through December 31.
(4) Each subsequent compliance report must be electronically submitted, postmarked or delivered no later than July 31 or January 31, whichever date comes first after the end of the semiannual reporting period.
(5) For each affected source that is subject to permitting regulations pursuant to 40 CFR part 70 or 40 CFR part 71, and if the permitting authority has established dates for submitting semiannual reports pursuant to 40 CFR 70.6(a)(3)(iii)(A) or 40 CFR 71.6(a)(3)(iii)(A), you may submit the first and subsequent compliance reports according to the dates the permitting authority has established instead of according to the dates in paragraphs (a)(1) through (4) of this section.
(b) Compliance report contents. Each compliance report must include the information in paragraphs (b)(1) through (8) of this section and, as applicable.
(1) Company name and address.
(2) Statement by a responsible official, with the official's name, title, and signature, certifying the truth, accuracy, and completeness of the content of the report. If your report is submitted via CEDRI, the certifier's electronic signature during the submission process replaces this requirement.
(3) Date of report and beginning and ending dates of the reporting period. You are no longer required to provide the date of report when the report is submitted via CEDRI.
(4) [Reserved]
(5) If there were no deviations from the continuous compliance requirements in §§63.9634 through 63.9636 that apply to you, then provide a statement that there were no deviations from the emission limitations, work practice standards, or operation and maintenance requirements during the reporting period.
(6) If there were no periods during which a continuous monitoring system (including a CPMS or COMS) was out-of-control as specified in §63.8(c)(7), then provide a statement that there were no periods during which a continuous monitoring system was out-of-control during the reporting period.
(7) For each deviation from an emission limitation in Table 1 to this subpart that occurs at an affected source where you are not using a continuous monitoring system (including a CPMS or COMS) to comply with an emission limitation in this subpart, the compliance report must contain the information in paragraphs (b)(7)(i) and (ii) of this section. 
(i) The total operating time in hours of each affected source during the reporting period.
(ii) Information on the affected sources or equipment, the emission limited deviation from, the start date, start time, duration in hours, and cause of each deviation (including unknown cause) as applicable, an estimate of the quantity in pounds of each regulated pollutant emitted over an emission limit and a description of the method used to estimate the emissions,  and the corrective action taken.
(8) For each deviation from an emission limitation occurring at an affected source where you are using a continuous monitoring system (including a CPMS or COMS) to comply with the emission limitation in this subpart, you must include the information in paragraphs (b)(1) through (4) of this section and the information in paragraphs (b)(8)(i) through (xi) of this section. 
(i) The date and time that each malfunction started and stopped.
(ii) The start date, start time, and duration that each continuous monitoring system was inoperative, except for zero (low-level) and high-level checks.
(iii) The start date, start time, and duration in hours (or minutes for COMS) that each continuous monitoring system was out-of-control, including the information in §63.8(c)(8).
(iv) For each affected source or equipment, the date, the time that each deviation started and stopped, the cause of the deviation, and whether each deviation occurred during a period of malfunction or during another period. 
(v) The total duration in hours (or minutes for COMS) of all deviations for each CMS during the reporting period, the total operating time in hours of the affected source during the reporting period, and the total duration as a percent of the total source operating time during that reporting period.
(vi) A breakdown of the total duration in hours (or minutes for COMS) of the deviations during the reporting period including those that are due to control equipment problems, process problems, other known causes, and other unknown causes.
(vii) The total duration in hours (or minutes for COMS) of continuous monitoring system downtime for each continuous monitoring system during the reporting period, the total operating time in hours of the affected source during the reporting period and the total duration of continuous monitoring system downtime as a percent of the total source operating time during the reporting period.
(viii) A brief description of the process units.
(ix) The monitoring equipment manufacturer and model number and the pollutant or parameter monitored.
(x) The date of the latest continuous monitoring system certification or audit.
(xi) A description of any changes in continuous monitoring systems, processes, or controls since the last reporting period.
(c) Submitting compliance reports electronically. Beginning on [DATE 180 DAYS AFTER DATE OF PUBLICATION OF FINAL RULE IN THE FEDERAL REGISTER], submit all subsequent compliance reports to the EPA via CEDRI, which can be accessed through the EPA's Central Data Exchange (CDX) (https://cdx.epa.gov/). You must use the appropriate electronic report template on the CEDRI website (https://www.epa.gov/electronic-reporting-air-emissions/compliance-and-emissions-data-reporting-interface-cedri) for this subpart. The report must be submitted by the deadline specified in this subpart, regardless of the method in which the report is submitted. If you claim some of the information required to be submitted via CEDRI is confidential business information (CBI), submit a complete report, including information claimed to be CBI, to the EPA. The report must be generated using the appropriate form on the CEDRI website. Submit the file on a compact disc, flash drive, or other commonly used electronic storage medium and clearly mark the medium as CBI. Mail the electronic medium to U.S. EPA/OAQPS/SPPD/CORE CBI Office, Attention: Taconite Iron Ore Processing Sector Lead, MD C404-02, 4930 Old Page Rd., Durham, NC 27703. The same file with the CBI omitted must be submitted to the EPA via the EPA's CDX as described earlier in this paragraph.

(d) Part 70 monitoring report. If you have obtained a title V operating permit for an affected source pursuant to 40 CFR part 70 or 40 CFR part 71, you must report all deviations as defined in this subpart in the semiannual monitoring report required by 40 CFR 70.6(a)(3)(iii)(A) or 40 CFR 71.6(a)(3)(iii)(A). If you submit a compliance report for an affected source along with, or as part of, the semiannual monitoring report required by 40 CFR 70.6(a)(3)(iii)(A) or 40 CFR 71.6(a)(3)(iii)(A), and the compliance report includes all the required information concerning deviations from any emission limitation or operation and maintenance requirement in this subpart, submission of the compliance report satisfies any obligation to report the same deviations in the semiannual monitoring report. However, submission of a compliance report does not otherwise affect any obligation you may have to report deviations from permit requirements for an affected source to your permitting authority.
(e) Immediate corrective action report. If you had three unsuccessful attempts of applying corrective action as described in §63.9634(j) on an emission unit or group of emission units, then you must submit an immediate corrective action report. Within 5 calendar days after the third unsuccessful attempt at corrective action, you must submit to the Administrator a written report in accordance with §63.9634(j)(3) and (4). This report must notify the Administrator that a deviation has occurred and document the types of corrective measures taken to address the problem that resulted in the deviation of established operating parameters and the resulting operating limits.
(f) Performance tests. Within 60 days after the date of completing each performance test required by this subpart, you must submit the results of the performance test following the procedures specified in paragraphs (f)(1) through (3) of this section.
(1) Data collected using test methods supported by the EPA's Electronic Reporting Tool (ERT) as listed on the EPA's ERT website (https://www.epa.gov/electronic-reporting-air-emissions/electronic-reporting-tool-ert) at the time of the test. Submit the results of the performance test to the EPA via CEDRI, which can be accessed through the EPA's CDX (https://cdx.epa.gov/). The data must be submitted in a file format generated through the use of the EPA's ERT. Alternatively, you may submit an electronic file consistent with the extensible markup language (XML) schema listed on the EPA's ERT website.
(2) Data collected using test methods that are not supported by the EPA's ERT as listed on the EPA's ERT website at the time of the test. The results of the performance test must be included as an attachment in the ERT or an alternate electronic file consistent with the XML schema listed on the EPA's ERT website. Submit the ERT generated package or alternative file to the EPA via CEDRI.
(3) Confidential business information (CBI). If you claim some of the information submitted under paragraph (f)(1) or (2) of this section is CBI, you must submit a complete file, including information claimed to be CBI, to the EPA. The file must be generated through the use of the EPA's ERT or an alternate electronic file consistent with the XML schema listed on the EPA's ERT website. Submit the file on a compact disc, flash drive, or other commonly used electronic storage medium and clearly mark the medium as CBI. Mail the electronic medium to U.S. EPA/OAQPS/CORE CBI Office, Attention: Group Leader, Measurement Policy Group, MD C404-02, 4930 Old Page Rd., Durham, NC  27703. The same file with the CBI omitted must be submitted to the EPA via the EPA's CDX as described in paragraphs (f)(1) and (2) of this section.
(g) Claims of EPA system outage. If you are required to electronically submit a report through CEDRI in the EPA's CDX, you may assert a claim of EPA system outage for failure to timely comply with the reporting requirement. To assert a claim of EPA system outage, you must meet the requirements outlined in paragraphs (g)(1) through (7) of this section.
(1) You must have been or will be precluded from accessing CEDRI and submitting a required report within the time prescribed due to an outage of either the EPA's CEDRI or CDX systems.
(2) The outage must have occurred within the period of time beginning five business days prior to the date that the submission is due.
(3) The outage may be planned or unplanned.
(4) You must submit notification to the Administrator in writing as soon as possible following the date you first knew, or through due diligence should have known, that the event may cause or has caused a delay in reporting.
(5) You must provide to the Administrator a written description identifying:
(i) The date(s) and time(s) when CDX or CEDRI was accessed and the system was unavailable;
(ii) A rationale for attributing the delay in reporting beyond the regulatory deadline to EPA system outage;
(iii) Measures taken or to be taken to minimize the delay in reporting; and
(iv) The date by which you propose to report, or if you have already met the reporting requirement at the time of the notification, the date you reported.
(6) The decision to accept the claim of EPA system outage and allow an extension to the reporting deadline is solely within the discretion of the Administrator.
(7) In any circumstance, the report must be submitted electronically as soon as possible after the outage is resolved.
(h) Claims of force majeure. If you are required to electronically submit a report through CEDRI in the EPA's CDX, you may assert a claim of force majeure for failure to timely comply with the reporting requirement. To assert a claim of force majeure, you must meet the requirements outlined in paragraphs (h)(1) through (5) of this section.
(1) You may submit a claim if a force majeure event is about to occur, occurs, or has occurred or there are lingering effects from such an event within the period of time beginning five business days prior to the date the submission is due. For the purposes of this section, a force majeure event is defined as an event that will be or has been caused by circumstances beyond the control of the affected facility, its contractors, or any entity controlled by the affected facility that prevents you from complying with the requirement to submit a report electronically within the time period prescribed. Examples of such events are acts of nature (e.g., hurricanes, earthquakes, or floods), acts of war or terrorism, or equipment failure or safety hazard beyond the control of the affected facility (e.g., large scale power outage).
(2) You must submit notification to the Administrator in writing as soon as possible following the date you first knew, or through due diligence should have known, that the event may cause or has caused a delay in reporting.
(3) You must provide to the Administrator:
(i) A written description of the force majeure event;
(ii) A rationale for attributing the delay in reporting beyond the regulatory deadline to the force majeure event;
(iii) Measures taken or to be taken to minimize the delay in reporting; and
(iv) The date by which you propose to report, or if you have already met the reporting requirement at the time of the notification, the date you reported.
(4) The decision to accept the claim of force majeure and allow an extension to the reporting deadline is solely within the discretion of the Administrator.
(5) In any circumstance, the reporting must occur as soon as possible after the force majeure event occurs.

§63.9642   What records must I keep?
(a) You must keep the records listed in paragraphs (a)(1) through (6) of this section.
(1) A copy of each notification and report that you submitted to comply with this subpart, including all documentation supporting any initial notification or notification of compliance status that you submitted, according to the requirements in §63.10(b)(2)(xiv).
(2) [Reserved]
(3) Records of performance tests and performance evaluations as required in §63.10(b)(2)(viii).
(4) In the event that an affected unit fails to meet an applicable standard, record the number of failures. For each failure record the date, time, the cause and duration of each failure.
(5) For each failure to meet an applicable standard, record and retain a list of the affected sources or equipment, an estimate of the quantity of each regulated pollutant emitted over any emission limit and a description of the method used to estimate the emissions.
(6) Record actions taken in accordance with the general duty requirements to minimize emissions in §63.9600(a) and any corrective actions taken to return the affected unit to its normal or usual manner of operation.
(b) For each COMS, you must keep the records specified in paragraphs (b)(1) through (4) of this section.
(1) Records described in §63.10(b)(2)(vi) through (xi).
(2) Monitoring data for COMS during a performance evaluation as required in §63.6(h)(7)(i) and (ii).
(3) Previous (that is, superseded) versions of the performance evaluation plan as required in §63.9632(b)(5), with the program of corrective action included in the plan required under §63.8(d)(2).
(4) Records of the date and time that each deviation started and stopped, and whether the deviation occurred during a period of startup, shutdown, or malfunction or during another period.
(c) You must keep the records required in §§63.9634 through 63.9636 to show continuous compliance with each emission limitation, work practice standard, and operation and maintenance requirement that applies to you.
§63.9643   In what form and how long must I keep my records?
(a) Your records must be in a form suitable and readily available for expeditious review, according to §63.10(b)(1).
(b) As specified in §63.10(b)(1), you must keep each record for 5 years following the date of each occurrence, measurement, maintenance, corrective action, report, or record.
(c) You must keep each record on site for at least 2 years after the date of each occurrence, measurement, maintenance, corrective action, report, or record according to §63.10(b)(1). You can keep the records offsite for the remaining 3 years.
(d) Any records required to be maintained by this part that are submitted electronically via EPA's CEDRI may be maintained in electronic format. This ability to maintain electronic copies does not affect the requirement for facilities to make records, data, and reports available upon request to a delegated air agency or EPA as part of an on-site compliance evaluation.
§63.9650   What parts of the General Provisions apply to me?
Table 2 to this subpart shows which parts of the General Provisions in §§63.1 through 63.16 apply to you.
§63.9651   Who implements and enforces this subpart?
(a) This subpart can be implemented and enforced by us, the EPA, or a delegated authority such as your State, local, or tribal agency. If the EPA Administrator has delegated authority to your State, local, or tribal agency, then that agency has the authority to implement and enforce this subpart. You should contact your EPA Regional Office to find out if this subpart is delegated to your State, local, or tribal agency.
(b) In delegating implementation and enforcement authority of this subpart to a State, local, or tribal agency under subpart E of this part, the authorities contained in paragraph (c) of this section are retained by the Administrator of the EPA and are not transferred to the State, local, or tribal agency.
(c) The authorities that will not be delegated to State, local, or tribal agencies are specified in paragraphs (c)(1) through (5) of this section.
(1) Approval of non-opacity emission limitations and work practice standards under §63.6(h)(9) and as defined in §63.90.
(2) Approval of major alternatives to test methods under §63.7(e)(2)(ii) and (f) and as defined in §63.90.
(3) Approval of major alternatives to monitoring under §63.8(f) and as defined in §63.90.
(4) Approval of major alternatives to recordkeeping and reporting under §63.10(f) and as defined in §63.90.
(5) Approval of an alternative to any electronic reporting to the EPA required by this subpart.
§63.9652   What definitions apply to this subpart?
Terms used in this subpart are defined in the Clean Air Act, in §63.2, and in this section as follows.
Affected source means each new or existing ore crushing and handling operation, ore dryer, indurating furnace, or finished pellet handling operation, at your taconite iron ore processing plant.
Bag leak detection system means a system that is capable of continuously monitoring relative particulate matter (dust) loadings in the exhaust of a baghouse to detect bag leaks and other upset conditions. A bag leak detection system includes, but is not limited to, an instrument that operates on triboelectric, light scattering, light transmittance, or other effect to continuously monitor relative particulate matter loadings.

Crusher means a machine used to crush taconite ore and includes feeders or conveyors located immediately below the crushing surfaces. Crushers include, but are not limited to, gyratory crushers and cone crushers.
Deviation means any instance in which an affected source subject to this subpart, or an owner or operator of such a source:
(1) Fails to meet any requirement or obligation established by this subpart, including but not limited to any emission limitation (including operating limits) or operation and maintenance requirement;
(2) Fails to meet any term or condition that is adopted to implement an applicable requirement in this subpart and that is included in the operating permit for any affected source required to obtain such a permit; or

Dynamic wet scrubber means an air emissions control device which utilizes a mechanically powered fan to cause contact between the process exhaust gas stream and the scrubbing liquid which are introduced concurrently into the fan inlet.
Emission limitation means any emission limit, opacity limit, or operating limit.
Finished pellet handling means the transfer of fired taconite pellets from the indurating furnace to the finished pellet stockpiles at the plant. Finished pellet handling includes, but is not limited to, furnace discharge or grate discharge, and finished pellet screening, transfer, and storage. The atmospheric pellet cooler vent stack and gravity conveyor gallery vents designed to remove heat and water vapor from the structure are not included as a part of the finished pellet handling affected source.
Fugitive dust emission source means a stationary source from which particles are discharged to the atmosphere due to wind or mechanical inducement such as vehicle traffic. Fugitive dust sources include, but are not limited to:
(1) Stockpiles (includes, but is not limited to, stockpiles of uncrushed ore, crushed ore, or finished pellets);
(2) Material transfer points;
(3) Plant roadways;
(4) Tailings basins;
(5) Pellet loading areas; and
(6) Yard areas.
Grate feed means the transfer of unfired taconite pellets from the pelletizer into the indurating furnace.
Grate kiln indurating furnace means a furnace system that consists of a traveling grate, a rotary kiln, and an annular cooler. The grate kiln indurating furnace begins at the point where the grate feed conveyor discharges the green balls onto the furnace traveling grate and ends where the hardened pellets exit the cooler. The atmospheric pellet cooler vent stack is not included as part of the grate kiln indurating furnace.
Indurating means the process whereby unfired taconite pellets, called green balls, are hardened at high temperature in an indurating furnace. Types of indurating furnaces include straight grate indurating furnaces and grate kiln indurating furnaces.
Ore crushing and handling means the process whereby dry taconite ore is crushed and screened. Ore crushing and handling includes, but is not limited to, all dry crushing operations (e.g., primary, secondary, and tertiary crushing), dry ore conveyance and transfer points, dry ore classification and screening, dry ore storage and stockpiling, dry milling, dry cobbing (i.e., dry magnetic separation), and the grate feed. Ore crushing and handling specifically excludes any operations where the dry crushed ore is saturated with water, such as wet milling and wet magnetic separation.
Ore dryer means a rotary dryer that repeatedly tumbles wet taconite ore concentrate through a heated air stream to reduce the amount of entrained moisture in the taconite ore concentrate.
Pellet cooler vent stacks means atmospheric vents in the cooler section of the grate kiln indurating furnace that exhaust cooling air that is not returned for recuperation. Pellet cooler vent stacks are not to be confused with the cooler discharge stack, which is in the pellet loadout or dumping area.
Pellet loading area means that portion of a taconite iron ore processing plant where taconite pellets are loaded into trucks or railcars.
Responsible official means responsible official as defined in §63.2.
Rod-deck venturi scrubber means a wet scrubber emission control device in which the inlet air flows through a bed of parallel metal pipes spaced apart to produce a series of parallel venturi throats.
Screen means a device for separating material according to size by passing undersize material through one or more mesh surfaces (screens) in series and retaining oversize material on the mesh surfaces (screens).
Storage bin means a facility for storage (including surge bins and hoppers) of taconite ore or taconite pellets prior to further processing or loading.
Straight grate indurating furnace means a furnace system that consists of a traveling grate that carries the taconite pellets through different furnace temperature zones. In the straight grate indurating furnace a layer of fired pellets, called the hearth layer, is placed on the traveling grate prior to the addition of unfired pellets. The straight grate indurating furnace begins at the point where the grate feed conveyor discharges the green balls onto the furnace traveling grate and ends where the hardened pellets drop off of the traveling grate.
Taconite iron ore processing means the separation and concentration of iron ore from taconite, a low-grade iron ore, to produce taconite pellets.
Taconite ore means a low-grade iron ore suitable for concentration of magnetite or hematite by fine grinding and magnetic or flotation treatment, from which pellets containing iron can be produced.
Tailings basin means a natural or artificial impoundment in which gangue or other refuse material resulting from the washing, concentration or treatment of ground taconite iron ore is confined.
Wet scrubber means an air pollution control device that removes particulate matter and acid gases from the waste gas stream of stationary sources. The pollutants are removed primarily through the impaction, diffusion, interception and/or absorption of the pollutant onto droplets of liquid. Wet scrubbers include venturi scrubbers, marble bed scrubbers, or impingement scrubbers. For purposes of subpart RRRRR, wet scrubbers do not include dynamic wet scrubbers.
Table 1 to Subpart RRRRR of Part 63 -- Emission Limits
As required in §63.9590(a), you must comply with each applicable emission limit in the following table:
If your affected source is .  .  . 
and the affected source is categorized as .  .  . 
then you must comply with the flow-weighted mean concentration of particulate matter discharged to the atmosphere from the affected source, as determined using the procedures in §63.9621(b), such that you must not exceed .  .  . 
1. Ore crushing and handling emission units
Existing
0.008 grains per dry standard cubic foot (gr/dscf).
   
New
0.005 gr/dscf.
2. Straight grate indurating furnace processing magnetite
Existing
New
0.01 gr/dscf.
0.006 gr/dscf. 
3. Grate kiln indurating furnace processing magnetite
Existing
New
0.01 gr/dscf.
0.006 gr/dscf. 
4. Grate kiln indurating furnace processing hematite
Existing
New
0.03 gr/dscf.
0.018 gr/dscf. 
5. Finished pellet handling emission units
Existing
New
0.008 gr/dscf.
0.005 gr/dscf. 
6. Ore dryer
Existing
New
0.052 gr/dscf.
0.025 gr/dscf.
Table 2 to Subpart RRRRR of Part 63 -- Applicability of General Provisions to Subpart RRRRR of Part 63 
As required in §63.9650, you must comply with the requirements of the NESHAP General Provisions (40 CFR part 63, subpart A) shown in the following table:
Citation 
Subject 
Applies to Subpart RRRRR 
Explanation 
§63.1(a)(1)-(4)
Applicability
Yes.

§63.1(a)(5)
[Reserved]
No.

§63.1(a)(6)
Applicability
Yes.

§63.1(a)(7)-(9)
[Reserved]
No.

§63.1(a)(10)-(12)
Applicability
Yes.

§63.1(b)(1)
Initial Applicability Determination
Yes.

§63.1(b)(2)
[Reserved]
No.

§63.1(b)(3)
Initial Applicability Determination
Yes.

§63.1(c)(1)-(2)
Applicability After Standard Established, Permit Requirements
Yes.

§63.1(c)(3)-(4)
[Reserved]
No.

§63.1(c)(5)
Area Source Becomes Major
Yes.

§63.1(d)
[Reserved]
No.

§63.1(e)
Equivalency of Permit Limits
Yes.

§63.2
Definitions
Yes.

§63.3(a)-(c)
Units and Abbreviations
Yes.

§63.4(a)(1)-(2)
Prohibited Activities
Yes.

§63.4(a)(3)-(5)
[Reserved]
No.

§63.4(b)-(c)
Circumvention, Fragmentation
Yes.

§63.5(a)(1)-(2)
Construction/Reconstruction, Applicability
Yes.

§63.5(b)(1)
Construction/Reconstruction, Applicability
Yes.

§63.5(b)(2)
[Reserved]
No.

§63.5(b)(3)-(4)
Construction/Reconstruction, Applicability
Yes.

§63.5(b)(5)
[Reserved]
No.

§63.5(b)(6)
Applicability
Yes.

§63.5(c)
[Reserved]
No.

§63.5(d)(1)-(4)
Application for Approval of Construction or Reconstruction
Yes.

§63.5(e)
Approval of Construction or Reconstruction
Yes.

§63.5(f)
Approval Based on State Review
Yes.

§63.6(a)
Compliance with Standards and Maintenance Requirements
Yes.

§63.6(b)(1)-(5)
Compliance Dates for New/Reconstructed Sources
Yes.

§63.6(b)(6)
[Reserved]
No.

§63.6(b)(7)
Compliance Dates for New/Reconstructed Sources
Yes.

§63.6(c)(1)-(2)
Compliance Dates for Existing Sources
Yes.

§63.6(c)(3)-(4)
[Reserved]
No.

§63.6(c)(5)
Compliance Dates for Existing Sources
Yes.

§63.6(d)
[Reserved]
No.

§63.6(e)(1)(i)
Operation and Maintenance Requirements - General Duty to Minimize Emissions
No. 
See §63.9600(a) for general duty requirement.
§63.6(e)(1)(ii)
Operation and Maintenance Requirements - Requirement to Correct Malfunction as Soon as Possible
No.

§63.6(e)(1)(iii)
Operation and Maintenance Requirements - Enforceability
Yes.

§63.6(e)(2)
[Reserved]
No.

§63.6(e)(3)
Startup, Shutdown, Malfunction (SSM) Plan
No.

§63.6(f)(1)
SSM Exemption
No.

§63.6(f)(2)-(3)
Methods for Determining Compliance
Yes.

§63.6(g)(1)-(3)
Alternative Nonopacity Standard
Yes.

§63.6(h)
Compliance with Opacity and Visible Emission (VE) Standards
No.
Opacity limits in subpart RRRRR are established as part of performance testing in order to set operating limits for ESPs.
§63.6(i)(1)-(14)
Extension of Compliance
Yes.

§63.6(i)(15)
[Reserved]
No.

§63.6(i)(16)
Extension of Compliance
Yes.

§63.6(j)
Presidential Compliance Exemption
Yes.

§63.7(a)(1)-(2)
Applicability and Performance Test Dates
No.
Subpart RRRRR specifies performance test applicability and dates.
§63.7(a)(3)-(4) 
Performance Testing Requirements
Yes.

§63.7(b)
Notification
Yes.

§63.7(c)
Quality Assurance/Test Plan
Yes.

§63.7(d)
Testing Facilities
Yes.

§63.7(e)(1)
Conduct of Performance Tests
No.
See §63.9621.
§63.7(e)(2)-(4)
Conduct of Performance Tests
Yes.

§63.7(f)
Alternative Test Method
Yes.

§63.7(g)
Data Analysis
Yes.
Except this subpart specifies how and when the performance test results are reported.
§63.7(h)
Waiver of Tests
Yes.

§63.8(a)(1)-(2)
Monitoring Requirements
Yes.

§63.8(a)(3)
[Reserved]
No.

§63.8(a)(4)
Additional Monitoring Requirements for Control Devices in §63.11
No.
Subpart RRRRR does not require flares.
§63.8(b)(1)-(3)
Conduct of Monitoring
Yes.

§63.8(c)(1)(i)
Operation and Maintenance of CMS
No.
See §63.9632 for operation and maintenance requirements for monitoring. See §63.9600(a) for general duty requirement.
§63.8(c)(1)(ii)
Spare parts for CMS Equipment
Yes.

§63.8(c)(1)(iii)
SSM Plan for CMS
No.

§63.8(c)(2)-(3)
CMS Operation/Maintenance
Yes.

§63.8(c)(4)
Frequency of Operation for CMS 
No.
Subpart RRRRR specifies requirements for operation of CMS.
§63.8(c)(5)-(8)
CMS Requirements
Yes.
CMS requirements in §63.8(c)(5) and (6) apply only to COMS for dry electrostatic precipitators.
§63.8(d)(1)-(2)
Monitoring Quality Control
Yes.

§63.8(d)(3)
Monitoring Quality Control
No.
See §63.9632(b)(5). 
§63.8(e)
Performance Evaluation of CMS
Yes.

§63.8(f)(1)-(5)
Alternative Monitoring Method
Yes.

§63.8(f)(6)
Relative Accuracy Test Alternative (RATA)
No.
Subpart RRRRR does not require continuous emission monitoring systems.
§63.8(g)(1)-(4)
Data Reduction
Yes.

§63.8(g)(5)
Data That Cannot Be Used
No.
Subpart RRRRR specifies data reduction requirements.
§63.9
Notification Requirements
Yes
Additional notifications for CMS in §63.9(g) apply to COMS for dry electrostatic precipitators.
§63.10(a)
Recordkeeping and Reporting, Applicability and General Information
Yes.

§63.10(b)(1)
General Recordkeeping Requirements
Yes.

§63.10(b)(2)(i)
Records of SSM
No.
See §63.9642 for recordkeeping when there is a deviation from a standard.  
§63.10(b)(2)(ii)
Recordkeeping of Failures to Meet Standard
No.
See §63.9642 for recordkeeping of (1) date, time and duration; (2) listing of affected source or equipment, and an estimate of the quantity of each regulated pollutant emitted over the standard; and (3) actions to minimize emissions and correct the failure.
§63.10(b)(2)(iii)
Maintenance Records
Yes.

§63.10(b)(2)(iv)
Actions Taken to Minimize Emissions During SSM
No.

§63.10(b)(2)(v)
Actions Taken to Minimize Emissions During SSM
No.

§63.10(b)(2)(vi)
Recordkeeping for CMS Malfunctions
Yes.

§63.10(b)(2)(vii)-(xii)
Recordkeeping for CMS
Yes.

§63.10(b)(2)(xiii)
Records for Relative Accuracy Test
No.
Subpart RRRRR does not require continuous emission monitoring systems.
§63.10(b)(2)(xiv)
Records for Notification
Yes.

§63.10(b)(3)
Applicability Determinations
Yes.

§63.10(c)(1)-(6)
Additional Recordkeeping Requirements for Sources with CMS
Yes.

§63.10(c)(7)-(8)
Records of Excess Emissions and Parameter Monitoring Exceedances for CMS
No.
Subpart RRRRR specifies recordkeeping requirements.
§63.10(c)(9)
[Reserved]
No.

§63.10(c)(10)-(14)
CMS Recordkeeping
Yes

§63.10(c)(15)
Use of SSM Plan
No.

§63.10(d)(1)-(2)
General Reporting Requirements
Yes.
Except this subpart specifies how and when the performance test results are reported.
§63.10(d)(3)
Reporting opacity or VE observations
No.
Subpart RRRRR does not have opacity and VE standards that require the use of Method 9 of Appendix A-4 to 40 CFR part 60 or Method 22 of Appendix A-7 to 40 CFR part 60.
§63.10(d)(5)
SSM Reports
No. See 63.9641 for malfunction reporting requirements.

§63.10(e)
Additional Reporting Requirements
Yes.

§63.10(f)
Waiver of Recordkeeping or Reporting Requirements
Yes.

§63.11
Control Device and Work Practice Requirements
No
Subpart RRRRR does not require flares.
§63.12(a)-(c)
State Authority and Delegations
Yes.

§63.13(a)-(c)
State/Regional Addresses
Yes.

§63.14(a)-(t)
Incorporations by Reference
Yes.

§63.15(a)-(b)
Availability of Information and Confidentiality
Yes.

§63.16
Performance Track Provisions
Yes.