Federal & State Regulations | Subpart YYYY - National Emission Standards for Hazardous Air Pollutants for Stationary Combustion Turbines

Table 1 to Subpart YYYY of Part 63 - Emission Limitations

As stated in §63.6100, you must comply with the following emission limitations

For each new or reconstructed stationary combustion turbine described in §63.6100 which is . . .	You must meet the following emission limitations . . .
a lean premix gas-fired stationary combustion turbine as defined in this subpart, a lean premix oil-fired stationary combustion turbine as defined in this subpart, a diffusion flame gas-fired stationary combustion turbine as defined in this subpart, or a diffusion flame oil-fired stationary combustion turbine as defined in this subpart.	limit the concentration of formaldehyde to 91 ppbvd or less at 15-percent O₂, except during turbine startup. The period of time for turbine startup is subject to the limits specified in the definition of startup in §63.6175.

Table 2 to Subpart YYYY of Part 63 - Operating Limitations

As stated in §§63.6100 and 63.6140, you must comply with the following operating limitations.

For . . .	You must . . .
1. each stationary combustion turbine that is required to comply with the emission limitation for formaldehyde and is using an oxidation catalyst	maintain the 4-hour rolling average of the catalyst inlet temperature within the range suggested by the catalyst manufacturer. You are not required to use the catalyst inlet temperature data that is recorded during engine startup in the calculations of the 4-hour rolling average catalyst inlet temperature.
2. each stationary combustion turbine that is required to comply with the emission limitation for formaldehyde and is not using an oxidation catalyst	maintain any operating limitations approved by the Administrator.

[85 FR 13542, March 9, 2020]

Table 3 to Subpart YYYY of Part 63 - Requirements for Performance Tests and Initial Compliance Demonstrations

As stated in §63.6120, you must comply with the following requirements for performance tests and initial compliance demonstrations.

You must . . .	Using . . .	According to the following requirements . . .
¹?Incorporated by reference, see §63.14.
²?The %R value for each compound must be reported in the test report, and all field measurements must be corrected with the calculated %R value for that compound using the following equation:
Reported Results = ((Measured Concentration in Stack)/(%R)) × 100.
a. demonstrate formaldehyde emissions meet the emission limitations specified in Table 1 by a performance test initially and on an annual basis AND	Test Method 320 of 40 CFR part 63, appendix A; ASTM D6348-12e1?¹ provided that the test plan preparation and implementation provisions of Annexes A1 through A8 are followed and the %R as determined in Annex A5 is equal or greater than 70% and less than or equal to 130%;?² or other methods approved by the Administrator	formaldehyde concentration must be corrected to 15-percent O₂, dry basis. Results of this test consist of the average of the three 1-hour runs. Test must be conducted within 10 percent of 100-percent load.
b. select the sampling port location and the number of traverse points AND	Method 1 or 1A of 40 CFR part 60, appendix A	if using an air pollution control device, the sampling site must be located at the outlet of the air pollution control device.
c. determine the O₂ concentration at the sampling port location AND	Method 3A or 3B of 40 CFR part 60, appendix A; ANSI/ASME PTC 19.10-1981?¹ (Part 10) manual portion only; ASTM D6522-11?¹ if the turbine is fueled by natural gas	measurements to determine O₂ concentration must be made at the same time as the performance test.
d. determine the moisture content at the sampling port location for the purposes of correcting the formaldehyde concentration to a dry basis	Method 4 of 40 CFR part 60, appendix A or Test Method 320 of 40 CFR part 63, appendix A, or ASTM D6348-12e1?¹	measurements to determine moisture content must be made at the same time as the performance test.

[85 FR 13542, March 9, 2020]

Table 4 to Subpart YYYY of Part 63 - Initial Compliance With Emission Limitations

As stated in §§63.6110 and 63.6130, you must comply with the following requirements to demonstrate initial compliance with emission limitations

For the . . .	You have demonstrated initial compliance if . . .
emission limitation for formaldehyde.	the average formaldehyde concentration meets the emission limitations specified in Table 1.

Table 5 to Subpart YYYY of Part 63 - Continuous Compliance With Operating Limitations

As stated in §§63.6135 and 63.6140, you must comply with the following requirements to demonstrate continuing compliance with operating limitations:

For each stationary combustion turbine complying with the emission limitation for formaldehyde . . .	You must demonstrate continuous compliance by . . .
1. with an oxidation catalyst	continuously monitoring the inlet temperature to the catalyst and maintaining the 4-hour rolling average of the inlet temperature within the range suggested by the catalyst manufacturer.
2. without the use of an oxidation catalyst	continuously monitoring the operating limitations that have been approved in your petition to the Administrator.

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

As stated in §63.6150, you must comply with the following requirements for reports

If you own or operate a . . .	you must . . .	According to the following requirements . . .
1. stationary combustion turbine which must comply with the formaldehyde emission limitation	report your compliance status	semiannually, according to the requirements of §63.6150.
2. stationary combustion turbine which fires landfill gas, digester gas or gasified MSW equivalent to 10 percent or more of the gross heat input on an annual basis	report (1) the fuel flow rate of each fuel and the heating values that were used in your calculations, and you must demonstrate that the percentage of heat input provided by landfill gas, digester gas, or gasified MSW is equivalent to 10 percent or more of the gross heat input on an annual basis, (2) the operating limits provided in your federally enforceable permit, and any deviations from these limits, and (3) any problems or errors suspected with the meters	annually, according to the requirements in §63.6150.
3. a lean premix gas-fired stationary combustion turbine or a diffusion flame gas-fired stationary combustion turbine as defined by this subpart, and you use any quantity of distillate oil to fire any new or existing stationary combustion turbine which is located at the same major source	report (1) the number of hours distillate oil was fired by each new or existing stationary combustion turbine during the reporting period, (2) the operating limits provided in your federally enforceable permit, and any deviations from these limits, and (3) any problems or errors suspected with the meters	annually, according to the requirements in §63.6150.

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

You must comply with the applicable General Provisions requirements:

Citation	Subject	Applies to subpart YYYY	Explanation
§63.1	General applicability of the General Provisions	Yes	Additional terms defined in §63.6175.
§63.2	Definitions	Yes	Additional terms defined in §63.6175.
§63.3	Units and abbreviations	Yes
§63.4	Prohibited activities	Yes
§63.5	Construction and reconstruction	Yes
§63.6(a)	Applicability	Yes
§63.6(b)(1)-(4)	Compliance dates for new and reconstructed sources	Yes
§63.6(b)(5)	Notification	Yes
§63.6(b)(6)	[Reserved]
§63.6(b)(7)	Compliance dates for new and reconstructed area sources that become major	Yes
§63.6(c)(1)-(2)	Compliance dates for existing sources	Yes
§63.6(c)(3)-(4)	[Reserved]
§63.6(c)(5)	Compliance dates for existing area sources that become major	Yes
§63.6(d)	[Reserved]
§63.6(e)(1)(i)	General duty to minimize emissions	Yes before September 8, 2020. No after September 8, 2020. See §63.6105 for general duty requirement.
§63.6(e)(1)(ii)	Requirement to correct malfunctions ASAP	Yes before September 8, 2020. No after September 8, 2020.
§63.6(e)(1)(iii)	Operation and Maintenance Requirements	Yes
§63.6(e)(2)	[Reserved]
§63.6(e)(3)	SSMP	Yes before September 8, 2020. No after September 8, 2020.
§63.6(f)(1)	Applicability of standards except during startup, shutdown, or malfunction (SSM)	Yes before September 8, 2020. No after September 8, 2020.
§63.6(f)(2)	Methods for determining compliance	Yes
§63.6(f)(3)	Finding of compliance	Yes
§63.6(g)(1)-(3)	Use of alternative standard	Yes
§63.6(h)	Opacity and visible emission standards	No	Subpart YYYY does not contain opacity or visible emission standards.
§63.6(i)	Compliance extension procedures and criteria	Yes
§63.6(j)	Presidential compliance exemption	Yes
§63.7(a)(1)-(2)	Performance test dates	Yes	Subpart YYYY contains performance test dates at §63.6110.
§63.7(a)(3)	Section 114 authority	Yes
§63.7(b)(1)	Notification of performance test	Yes
§63.7(b)(2)	Notification of rescheduling	Yes
§63.7(c)	Quality assurance/test plan	Yes
§63.7(d)	Testing facilities	Yes
§63.7(e)(1)	Conditions for conducting performance tests	Yes before September 8, 2020. No after September 8, 2020.
§63.7(e)(2)	Conduct of performance tests and reduction of data	Yes	Subpart YYYY specifies test methods at §63.6120.
§63.7(e)(3)	Test run duration	Yes
§63.7(e)(4)	Administrator may require other testing under section 114 of the CAA	Yes
§63.7(f)	Alternative test method provisions	Yes
§63.7(g)	Performance test data analysis, recordkeeping, and reporting	Yes
§63.7(h)	Waiver of tests	Yes
§63.8(a)(1)	Applicability of monitoring requirements	Yes	Subpart YYYY contains specific requirements for monitoring at §63.6125.
§63.8(a)(2)	Performance specifications	Yes
§63.8(a)(3)	[Reserved]
§63.8(a)(4)	Monitoring for control devices	No
§63.8(b)(1)	Monitoring	Yes
§63.8(b)(2)-(3)	Multiple effluents and multiple monitoring systems	Yes
§63.8(c)(1)	Monitoring system operation and maintenance	Yes
§63.8(c)(1)(i)	General duty to minimize emissions and CMS operation	Yes before September 8, 2020. No after September 8, 2020.
§63.8(c)(1)(ii)	Parts for repair of CMS readily available	Yes
§63.8(c)(1)(iii)	Requirement to develop SSM Plan for CMS	Yes before September 8, 2020. No after September 8, 2020.
§63.8(c)(2)-(3)	Monitoring system installation	Yes
§63.8(c)(4)	Continuous monitoring system (CMS) requirements	Yes	Except that subpart YYYY does not require continuous opacity monitoring systems (COMS).
§63.8(c)(5)	COMS minimum procedures	No
§63.8(c)(6)-(8)	CMS requirements	Yes	Except that subpart YYYY does not require COMS.
§63.8(d)(1)-(2)	CMS quality control	Yes
§63.8(d)(3)	Written procedures for CMS	Yes before September 8, 2020. No after September 8, 2020.
§63.8(e)	CMS performance evaluation	Yes	Except for §63.8(e)(5)(ii), which applies to COMS.
§63.8(f)(1)-(5)	Alternative monitoring method	Yes
§63.8(f)(6)	Alternative to relative accuracy test	Yes
§63.8(g)	Data reduction	Yes	Except that provisions for COMS are not applicable. Averaging periods for demonstrating compliance are specified at §§63.6135 and 63.6140.
§63.9(a)	Applicability and State delegation of notification requirements	Yes
§63.9(b)(1)-(5)	Initial notifications	Yes	Except that §63.9(b)(3) is reserved.
§63.9(c)	Request for compliance extension	Yes
§63.9(d)	Notification of special compliance requirements for new sources	Yes
§63.9(e)	Notification of performance test	Yes
§63.9(f)	Notification of visible emissions/opacity test	No	Subpart YYYY does not contain opacity or VE standards.
§63.9(g)(1)	Notification of performance evaluation	Yes
§63.9(g)(2)	Notification of use of COMS data	No	Subpart YYYY does not contain opacity or VE standards.
§63.9(g)(3)	Notification that criterion for alternative to relative accuracy test audit (RATA) is exceeded	Yes
§63.9(h)	Notification of compliance status	Yes	Except that notifications for sources not conducting performance tests are due 30 days after completion of performance evaluations. §63.9(h)(4) is reserved.
§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)	Administrative provisions for recordkeeping and reporting	Yes
§63.10(b)(1)	Record retention	Yes
§63.10(b)(2)(i)	Recordkeeping of occurrence and duration of startups and shutdowns	Yes before September 8, 2020. No after September 8, 2020.
§63.10(b)(2)(ii)	Recordkeeping of failures to meet a standard	Yes before September 8, 2020. No after September 8, 2020. See §63.6155 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)-(v)	Records related to actions during SSM	Yes before September 8, 2020. No after September 8, 2020.
§63.10(b)(2)(vi)-(xi)	CMS records	Yes
§63.10(b)(2)(xii)	Record when under waiver	Yes
§63.10(b)(2)(xiii)	Records when using alternative to RATA	Yes
§63.10(b)(2)(xiv)	Records of supporting documentation	Yes
§63.10(b)(3)	Records of applicability determination	Yes
§63.10(c)(1)-(14)	Additional records for sources using CMS	Yes	Except that §63.10(c)(2)-(4) and (9) are reserved.
§63.10(c)(15)	Use of SSM Plan	Yes before September 8, 2020. No after September 8, 2020.
§63.10(d)(1)	General reporting requirements	Yes
§63.10(d)(2)	Report of performance test results	Yes
§63.10(d)(3)	Reporting opacity or VE observations	No	Subpart YYYY does not contain opacity or VE standards.
§63.10(d)(4)	Progress reports	Yes
§63.10(d)(5)	Startup, shutdown, and malfunction reports	No. After September 8, 2020, see 63.6150(a) for malfunction reporting requirements.
§63.10(e)(1) and (2)(i)	Additional CMS reports	Yes
§63.10(e)(2)(ii)	COMS-related report	No	Subpart YYYY does not require COMS.
§63.10(e)(3)	Excess emissions and parameter exceedances reports	Yes	After September 8, 2020 submitted with the compliance report through CEDRI according to §63.6150(a).
§63.10(e)(4)	Reporting COMS data	No	Subpart YYYY does not require COMS.
§63.10(f)	Waiver for recordkeeping and reporting	Yes
§63.11	Flares	No
§63.12	State authority and delegations	Yes
§63.13	Addresses	Yes	After September 8, 2020 not applicable to reports required to be submitted through CEDRI by 63.6150(c), (e), (f), or (g).
§63.14	Incorporation by reference	Yes
§63.15	Availability of information	Yes

[85 FR 13543, March 9, 2020; 85 FR 73911, Nov. 19, 2020]

Source: 69 FR 10537, Mar. 5, 2004, unless otherwise noted.

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Subpart YYYY - National Emission Standards for Hazardous Air Pollutants for Stationary Combustion Turbines