Federal & State Regulations | Subpart NNNNN - National Emission Standards for Hazardous Air Pollutants: Hydrochloric Acid Production

...

Table 1 to Subpart NNNNN of Part 63 - Emission Limits and Work Practice Standards

As stated in §63.9000(a), you must comply with the following emission limits and work practice standards for each emission stream that is part of an affected source.

For each . . .	You must meet the following emission limit and work practice standard
1. Emission stream from an HCl process vent at an existing source	a. Reduce HCl emissions by 99 percent or greater or achieve an outlet concentration of 20 ppm by volume or less; and
	b. Reduce Cl₂ emissions by 99 percent or greater or achieve an outlet concentration of 100 ppm by volume or less.
2. Emission stream from an HCl storage tank at an existing source	Reduce HCl emissions by 99 percent or greater or achieve an outlet concentration of 120 ppm by volume or less.
3. Emission stream from an HCl transfer operation at an existing source	Reduce HCl emissions by 99 percent or greater or achieve an outlet concentration of 120 ppm by volume or less.
4. Emission stream from leaking equipment in HCl service at existing and new sources	a. Prepare and operate at all times according to an equipment LDAR plan that describes in detail the measures that will be put in place to detect leaks and repair them in a timely fashion; and
	b. Submit the plan to the Administrator for comment only with your Notification of Compliance Status; and
	c. You may incorporate by reference in such plan existing manuals that describe the measures in place to control leaking equipment emissions required as part of other federally enforceable requirements, provided that all manuals that are incorporated by reference are submitted to the Administrator.
5. Emission stream from an HCl process vent at a new source	a. Reduce HCl emissions by 99.4 percent or greater or achieve an outlet concentration of 12 ppm by volume or less; and
	b. Reduce Cl₂ emissions by 99.8 percent or greater or achieve an outlet concentration of 20 ppm by volume or less.
6. Emission stream from an HCl storage tank at a new source	Reduce HCl emissions by 99.9 percent or greater or achieve an outlet concentration of 12 ppm by volume or less.
7. Emission stream from an HCl transfer operation at a new source	Reduce HCl emissions by 99 percent or greater or achieve an outlet concentration of 120 ppm by volume or less.

[68 FR 19090, Apr. 17, 2003, as amended at 71 FR 17746, Apr. 7, 2006; 85 FR 20871, April 15, 2020]

Table 2 to Subpart NNNNN of Part 63 - Operating Limits

As stated in §63.9000(b), you must comply with the following operating limits for each emission stream that is part of an affected source that is vented to a control device.

For each . . .	You must . . .
1. Caustic scrubber or water scrubber/absorber	a. Maintain the daily average scrubber inlet liquid or recirculating liquid flow rate, as appropriate, above the operating limit; and b. Maintain the daily average scrubber effluent pH within the operating limits; or c. Instead of a. and b., maintain your operating parameter(s) within the operating limits established according to your monitoring plan established under §63.8(f).
2. Other type of control device to which HCl emissions are ducted	Maintain your operating parameter(s) within the limits established during the performance test and according to your monitoring plan.

Table 3 to Subpart NNNNN of Part 63 - Performance Test Requirements for HCl Production Affected Sources

As stated in §63.9020, you must comply with the following requirements for performance tests for HCl production for each affected source.

For each HCl process vent and each HCl storage tank and HCl transfer operation for which you are conducting a performance test, you must . . .	Using . . .	Additional Information . . .
1. Select sampling port location(s) and the number of traverse points	a. Method 1 or 1A in appendix A to 40 CFR part 60 of this chapter	i. If complying with a percent reduction emission limitation, sampling sites must located at the inlet and outlet of the control device prior to any releases to the atmosphere (or, if a series of control devices are used, at the inlet of the first control device and at the outlet of the final control device prior to any releases to the atmosphere); or
		ii. If complying with an outlet concentration emission limitation, the sampling site must be located at the outlet of the final control device and prior to any releases to the atmosphere or, if no control device is used, prior to any releases to the atmosphere.
2. Determine velocity and volumetric flow rate	Method 2, 2A, 2C, 2D, 2F, or 2G in appendix A to 40 CFR part 60 of this chapter.
3. Determine gas molecular weight	a. Not applicable	i. Assume a molecular weight of 29 (after moisture correction) for calculation purposes.
4. Measure moisture content of the stack gas	Method 4 in appendix A to 40 CFR part 60 of this chapter.
5. Measure HCl concentration and Cl₂ concentration from HCl process vents	a. Method 26A in appendix A to 40 CFR part 60 of this chapter	i. An owner or operator may be exempted from measuring the Cl₂ concentration from an HCl process vent provided that a demonstration that Cl₂ is not likely to be present in the stream is submitted as part of the site-specific test plan required by §63.9020(a)(2). This demonstration may be based on process knowledge, engineering judgment, or previous test results.
6. Establish operating limits with which you will demonstrate continuous compliance with the emission limits in Table 1 to this subpart, in accordance with §63.9020(e)(1) or (2).

[68 FR 19090, Apr. 17, 2003, as amended at 71 FR 17747, Apr. 7, 2006]

Table 4 to Subpart NNNNN of Part 63 - Initial Compliance With Emission Limitations and Work Practice Standards

As stated in §63.9030, you must comply with the following requirements to demonstrate initial compliance with the applicable emission limits for each affected source vented to a control device and each work practice standard.

For each . . .	For the following emission limit or work practice standard . . .	You have demonstrated initial compliance if . . .
1. HCl process vent and each HCl storage tank and HCl transfer operation for which you are conducting a performance test	a. In Table 1 to this subpart	i. The average percent reduction of HCl and Cl₂ (if applicable), measured over the period of the performance test conducted according to Table 3 of this subpart and determined in accordance with §63.9020(b), is greater than or equal to the applicable percent reduction emission limitation specified in Table 1 of this subpart; or
		ii. The average HCl and Cl₂ (if applicable) concentration, measured over the period of the performance test conducted according to Table 3 of this subpart, is less than or equal to the applicable concentration emission limitation specified in Table 1 of this subpart.
2. HCl storage tank and HCl transfer operation for which you are preparing a design evaluation in lieu of conducting a performance test	a. In Table 1 to this subpart	i. The percent reduction of HCl, demonstrated by a design evaluation prepared in accordance with §63.9020(c), is greater than or equal to the applicable percent reduction emission limitation specified in Table 1 of this subpart; or
		ii. The HCl concentration, demonstrated by a design evaluation prepared in accordance with §63.9020(c), is less than or equal to the applicable concentration emission limitation specified in Table 1 of this subpart.
3. Leaking equipment	a. In Table 1 to this subpart	i. You certify in your Notification of Compliance Status that you have developed and implemented your LDAR plan and submitted it to the Administrator for comment only.

Table 5 to Subpart NNNNN of Part 63 - Continuous Compliance With Emission Limitations and Work Practice Standards

As stated in §63.9040, you must comply with the following requirements to demonstrate continuous compliance with the applicable emission limitations for each affected source vented to a control device and each work practice standard.

For each . . .	For the following emission limitation and work practice standard . . .	You must demonstrate continuous compliance by . . .
1. Affected source using a caustic scrubber or water scrubber/adsorber	a. In Tables 1 and 2 to this subpart	i. Collecting the scrubber inlet liquid or recirculating liquid flow rate, as appropriate, and effluent pH monitoring data according to §63.9025, consistent with your monitoring plan; and
		ii. Reducing the data to 1-hour and daily block averages according to the requirements in §63.9025; and
		iii. Maintaining the daily average scrubber inlet liquid or recirculating liquid flow rate, as appropriate, above the operating limit; and
		iv. Maintaining the daily average scrubber effluent pH within the operating limits.
2. Affected source using any other control device	a. In Tables 1 and 2 to this subpart	i. Conducting monitoring according to your monitoring plan established under §63.8(f) in accordance with §63.9025(c); and
		ii. Collecting the parameter data according to your monitoring plan established under §63.8(f); and
		iii. Reducing the data to 1-hour and daily block averages according to the requirements in §63.9025; and
		iv. Maintaining the daily average parameter values within the operating limits established according to your monitoring plan established under §63.8(f).
3. Affected source using no control device	a. In Tables 1 and 2 to this subpart.	i. Verifying that you have not made any process changes that could reasonably be expected to change the outlet concentration since your most recent performance test for an emission point.
4. Leaking equipment affected source	a. In Table 1 to this subpart	i. Verifying that you continue to use a LDAR plan; and
		ii. Reporting any instances where you deviated from the plan and the corrective actions taken.

[68 FR 19090, Apr. 17, 2003, as amended at 71 FR 17747, Apr. 7, 2006]

Table 6 to Subpart NNNNN of Part 63 - Requirements for Reports

As stated in §63.9050(a), you must submit a compliance report that includes the information in §63.9050(c) through (e) as well as the information in the following table. For existing sources and for new or reconstructed sources which commenced construction or reconstruction after April 17, 2003, but before February 5, 2019, before October 13, 2020, you must also submit startup, shutdown, and malfunction reports according to the requirements in §63.9050(f) and the following table. A startup, shutdown, and malfunction plan is not required after October 13, 2020.

If . . .	Then you must submit a report or statement that:
1. There are no deviations from any emission limitations that apply to you	There were no deviations from any emission limitations that apply to you during the reporting period. Include this statement in the compliance report.
2. There were no periods during which the operating parameter monitoring systems were out-of-control in accordance with the monitoring plan	There were no periods during which the CMS were out-of-control during the reporting period. Include this statement in the compliance report.
3. There was a deviation from any emission limitation during the reporting period	Contains the information in §63.9050(d). Include this statement in the compliance report.
4. There were periods during which the operating parameter monitoring systems were out-of-control in accordance with the monitoring plan	Contains the information in §63.9050(d). Include this statement in the compliance report.
5. There was a startup, shutdown, and malfunction during the reporting period that is not consistent with your startup, shutdown, and malfunction plan	For existing sources and for new or reconstructed sources which commenced construction or reconstruction after April 17, 2003, but before February 5, 2019, before October 13, 2020, contains the information in §63.9050(f). Include this statement in the compliance report. A startup, shutdown, and malfunction plan is not required after October 13, 2020.
6. There were periods when the procedures in the LDAR plan were not followed	Contains the information in §63.9050(c)(7). Include this statement in the compliance report.

Table 7 to Subpart NNNNN of Part 63 - Applicability of General Provisions to Subpart NNNNN

As stated in §63.9065, you must comply with the applicable General Provisions requirements according to the following:

Citation	Requirement	Applies to subpart NNNNN	Explanation
§63.1	Initial applicability determination; applicability after standard established; permit requirements; extensions; notifications	Yes.
§63.2	Definitions	Yes	Additional definitions are found in §63.9075.
§63.3	Units and abbreviations	Yes.
§63.4	Prohibited activities; compliance date; circumvention, severability	Yes.
§63.5	Construction/reconstruction applicability; applications; approvals	Yes.
§63.6(a)	Compliance with standards and maintenance requirements-applicability	Yes.
§63.6(b)(1)-(4)	Compliance dates for new or reconstructed sources	Yes	§63.8995 specifies compliance dates.
§63.6(b)(5)	Notification if commenced construction or reconstruction after proposal	Yes.
§63.6(b)(6)	[Reserved]	Yes.
§63.6(b)(7)	Compliance dates for new or reconstructed area sources that become major	Yes	§63.8995 specifies compliance dates.
§63.6(c)(1)-(2)	Compliance dates for existing sources	Yes	§63.8995 specifies compliance dates.
§63.6(c)(3)-(4)	[Reserved]	Yes.
§63.6(c)(5)	Compliance dates for existing area sources that become major	Yes	§63.8995 specifies compliance dates.
§63.6(d)	[Reserved]	Yes.
§63.6(e)(1)(i)	General Duty to minimize emissions	No, for new or reconstructed sources which commenced construction or reconstruction after February 4, 2019. Yes, for all other affected sources before October 13, 2020, and No thereafter	Subpart NNNNN requires affected units to meet emissions standards at all times. See §63.9005(b) for general duty requirement.
§63.6(e)(1)(ii)	Requirement to correct malfunctions ASAP	No, for new or reconstructed sources which commenced construction or reconstruction after February 4, 2019. Yes, for all other affected sources before October 13, 2020, and No thereafter
§63.6(e)(1)(iii)-(e)(2)	Operation and maintenance requirements	Yes
§63.6(e)(3)	Startup, Shutdown, and Malfunction Plans	No, for new or reconstructed sources which commenced construction or reconstruction after February 4, 2019. Yes, for all other affected sources before October 13, 2020, and No thereafter
§63.6(f)(1)	Compliance except during startup, shutdown, and malfunction	No, for new or reconstructed sources which commenced construction or reconstruction after February 4, 2019. Yes, for all other affected sources before October 13, 2020, and No thereafter
§63.6(f)(2)-(3)	Methods for determining compliance	Yes.
§63.6(g)	Use of an alternative non-opacity emission standard	Yes.
§63.6(h)	Compliance with opacity/visible emission standards	No	Subpart NNNNN does not specify opacity or visible emission standards.
§63.6(i)	Extension of compliance with emission standards	Yes.
§63.6(j)	Presidential compliance exemption	Yes.
§63.7(a)(1)-(2)	Performance test dates	Yes	Except for existing affected sources as specified in §63.9010(b).
§63.7(a)(3)	Administrator's Clean Air Act section 114 authority to require a performance test	Yes.
§63.7(b)	Notification of performance test and rescheduling	Yes.
§63.7(c)	Quality assurance program and site-specific test plans	Yes.
§63.7(d)	Performance testing facilities	Yes.
§63.7(e)(1)	Conditions for conducting performance tests	No, for new or reconstructed sources which commenced construction or reconstruction after February 4, 2019. Yes, for all other affected sources before October 13, 2020, and No thereafter	See §63.9020(a) for performance testing requirements.
§63.7(f)	Use of an alternative test method	Yes.
§63.7(g)	Performance test data analysis, recordkeeping, and reporting	Yes.
§63.7(h)	Waiver of performance tests	Yes.
§63.8(a)(1)-(3)	Applicability of monitoring requirements	Yes	Additional monitoring requirements are found in §63.9005(d) and 63.9035.
63.8(a)(4)	Monitoring with flares	No	Subpart NNNNN does not refer directly or indirectly to §63.11.
§63.8(b)	Conduct of monitoring and procedures when there are multiple effluents and multiple monitoring systems	Yes.
§63.8(c)(1)(i)	General duty to minimize emissions and CMS operation	No, for new or reconstructed sources which commenced construction or reconstruction after February 4, 2019. Yes, for all other affected sources before October 13, 2020, and No thereafter
§63.8(c)(1)(ii)	Continuous monitoring system O&M	Yes	Applies as modified by §63.9005(d).
§63.8(c)(1)(iii)	Requirement to develop Startup, Shutdown, and Malfunction Plan for CMS	No, for new or reconstructed sources which commenced construction or reconstruction after February 4, 2019. Yes, for all other affected sources before October 13, 2020, and No thereafter
§63.8(c)(2)-(3)	Continuous monitoring system O&M	Yes	Applies as modified by §63.9005(d)
§63.8(c)(4)	Continuous monitoring system requirements during breakdown, out-of-control, repair, maintenance, and high-level calibration drifts	Yes	Applies as modified by §63.9005(d).
§63.8(c)(5)	Continuous opacity monitoring system (COMS) minimum procedures	No	Subpart NNNNN does not have opacity or visible emission standards.
§63.8(c)(6)	Zero and high level calibration checks	Yes	Applies as modified by §63.9005(d).
§63.8(c)(7)-(8)	Out-of-control periods, including reporting	Yes.
§63.8(d)(1)-(2)	Quality control program and CMS performance evaluation	Yes	Applies as modified by §63.9005(d).
§63.8(d)(3)	Written procedures for CMS	No, for new or reconstructed sources which commenced construction or reconstruction after February 4, 2019. Yes, for all other affected sources before October 13, 2020, and No thereafter	See §63.9005(d)(5) for written procedures for CMS.
§63.8(e)	Performance evaluation of CMS	Yes	Applies as modified by §63.9005(d).
§63.8(f)(1)-(5)	Use of an alternative monitoring method	Yes.
§63.8(f)(6)	Alternative to relative accuracy test	No	Only applies to sources that use continuous emissions monitoring systems (CEMS).
§63.8(g)	Data reduction	Yes	Applies as modified by §63.9005(d).
§63.9(a)	Notification requirements - applicability	Yes.
§63.9(b)	Initial notifications	Yes	Except §63.9045(c) requires new or reconstructed affected sources to submit the application for construction or reconstruction required by §63.9(b)(1)(iii) in lieu of the initial notification.
§63.9(c)	Request for compliance extension	Yes.
§63.9(d)	Notification that a new source is subject to special compliance requirements	Yes.
§63.9(e)	Notification of performance test	Yes.
§63.9(f)	Notification of visible emissions/opacity test	No	Subpart NNNNN does not have opacity or visible emission standards.
§63.9(g)(1)	Additional CMS notifications - date of CMS performance evaluation	Yes.
§63.9(g)(2)	Use of COMS data	No	Subpart NNNNN does not require the use of COMS.
§63.9(g)(3)	Alternative to relative accuracy testing	No	Applies only to sources with CEMS.
§63.9(h)	Notification of compliance status	Yes	Except the submission date specified in §63.9(h)(2)(ii) is superseded by the date specified in §63.9045(f).
§63.9(i)	Adjustment of submittal deadlines	Yes.
§63.9(j)	Change in previous information	Yes.
§63.9(k)	Electronic reporting procedures	Yes	Only as specified in §63.9(j).
§63.10(a)	Recordkeeping/reporting applicability	Yes.
§63.10(b)(1)	General recordkeeping requirements	Yes	§§63.9055 and 63.9060 specify additional recordkeeping requirements.
§63.10(b)(2)(i)-(ii)	Records related to startup, shutdown, and malfunction periods	No, for new or reconstructed sources which commenced construction or reconstruction after February 4, 2019. Yes, for all other affected sources before October 13, 2020, and No thereafter	See 63.9055 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 startup, shutdown, and malfunction	No, for new or reconstructed sources which commenced construction or reconstruction after February 4, 2019. Yes, for all other affected sources before October 13, 2020, and No thereafter
§63.10(b)(2)(v)	Actions taken to minimize emissions during startup, shutdown, and malfunction	No, for new or reconstructed sources which commenced construction or reconstruction after February 4, 2019. Yes, for all other affected sources before October 13, 2020, and No thereafter
§63.10(b)(2)(vi)	Recordkeeping for CMS malfunctions	Yes
§63.10(b)(2)(vii)-(xi)	Records for performance tests and CMS	Yes
§63.10(b)(2)(xii)	Records when under waiver	Yes.
§63.10(b)(2)(xiii)	Records when using alternative to relative accuracy test	No	Applies only to sources with CEMS.
§63.10(b)(2)(xiv)	All documentation supporting initial notification and notification of compliance status	Yes.
§63.10(b)(3)	Recordkeeping requirements for applicability determinations	Yes.
§63.10(c)(1)-(14)	Additional recordkeeping requirements for sources with CMS	Yes	Applies as modified by §63.9005(d).
§63.10(c)(15)	Use of Startup, Shutdown, and Malfunction Plan	No, for new or reconstructed sources which commenced construction or reconstruction after February 4, 2019. Yes, for all other affected sources before October 13, 2020, and No thereafter
§63.10(d)(1)	General reporting requirements	Yes	§63.9050 specifies additional reporting requirements.
§63.10(d)(2)	Performance test results	Yes	§63.9045(f) specifies submission date.
§63.10(d)(3)	Opacity or visible emissions observations	No	Subpart NNNNN does not specify opacity or visible emission standards.
§63.10(d)(4)	Progress reports for sources with compliance extensions	Yes.
§63.10(d)(5)	Startup, shutdown, and malfunction reports	No, for new or reconstructed sources which commenced construction or reconstruction after February 4, 2019. Yes, for all other affected sources before October 13, 2020, and No thereafter	See §63.9050(c)(5) for malfunction reporting requirements.
§63.10(e)(1)	Additional CMS reports - general	Yes	Applies as modified by §63.9005(d).
§63.10(e)(2)(i)	Results of CMS performance evaluations	Yes	Applies as modified by §63.9005(d).
§63.10(e)(2)	Results of COMS performance evaluations	No	Subpart NNNNN does not require the use of COMS.
§63.10(e)(3)	Excess emissions/CMS performance reports	Yes.
§63.10(e)(4)	Continuous opacity monitoring system data reports	No	Subpart NNNNN does not require the use of COMS.
§63.10(f)	Recordkeeping/reporting waiver	Yes.
§63.11	Control device requirements - applicability	No	Facilities subject to subpart NNNNN do not use flares as control devices.
§63.12	State authority and delegations	Yes	§63.9070 lists those sections of subparts NNNNN and A that are not delegated.
§63.13	Addresses	Yes.
§63.14	Incorporation by reference	Yes	Subpart NNNNN does not incorporate any material by reference.
§63.15	Availability of information/confidentiality	Yes.

[68 FR 19090, Apr. 17, 2003, as amended at 71 FR 17748, Apr. 7, 2006; 85 FR 20871, April 15, 2020; 85 FR 73916, Nov. 19, 2020]

Source: 68 FR 19090, Apr. 17, 2003, unless otherwise noted.

['Air Programs']

['Hazardous Air Pollutants']

UPGRADE TO CONTINUE READING

About Notice at Collection Terms of Use Do Not Sell or Share My Personal Information Accessibility Support