MEMORANDUM

FROM:	Rachel Schmeltz, U.S. EPA, Climate Change Division

TO:	Docket EPA-HQ-OAR-2012-0934

DATE:	September 24, 2013

SUBJECT:	Table of Final 2013 Revisions to the Greenhouse Gas Reporting Rule
--------------------------------------------------------------------------------

  1.0	INTRODUCTION
The 2009 final GHG reporting rule (2009 final rule) was signed by EPA Administrator Lisa Jackson on September 22, 2009 and published in the Federal Register on October 30, 2009 (74 FR 56260, October 30, 2009).  The 2009 final rule, which became effective on December 29, 2009, included reporting of GHGs from various facilities and suppliers, consistent with the 2008 Consolidated Appropriations Act.  Subsequent notices were published in 2010 finalizing the requirements for subparts T, FF, II, and TT (75 FR 39736, July 12, 2010), subpart W (75 FR 74458, November 20, 2010), subparts I, L, DD, QQ, and SS (75 FR 74774, December 1, 2010), and subparts RR and UU (75 FR 75060, December 1, 2010).  These requirements are contained in 40 CFR part 98.The rule does not require control of GHGs, rather it only requires that sources above certain threshold levels monitor and report emissions and other related data.
Since promulgation of the rule, the EPA has identified a number of technical issues that need to be corrected and specific portions of the Mandatory Greenhouse Gases Reporting Rule (hereafter referred to as "Part 98") that need to be clarified.  The EPA is amending specific provisions in the Greenhouse Gas Reporting Rule to better reflect industry practices and improvements in climate research, correct technical and editorial errors that have been identified since promulgation, and to clarify or update certain provisions that have been the subject of questions from reporting entities.
The purpose of this memorandum is to provide a detailed list of each change finalized in this action. The table in section 3.0 contains a list of each finalized change, the rule language for the current requirement, and the final rule language.  A brief explanation of the reason for the change is included for those items that are not specifically addressed in the preamble for this proposal.  These changes are minor clarifications of the requirements text to better reflect EPA's intent, simple corrections to calculation terms or cross-references that do not revise the output of the calculations, harmonizing changes within a subpart (such as changes to terminology), simple editorial and minor error corrections, or removal of redundant text.  In total, these changes do not represent a change in reporting burden. Also available in the docket for this action is a set of documents in redline strikeout format for each section of Part 98 for which EPA is finalizing changes.
  2.0	SUMMARY OF CHANGES INCLUDED
EPA is finalizing changes for the subparts identified in the table below.  Significant changes that are not detailed in this memorandum include changes to tables for several subparts.  The amended tables are available in the redline document for the individual subpart and as attachments to this memorandum.  Tables that have been changed include: Table A-1, A-6, C-1, C-2, AA-1, AA-2, HH-1, HH-2, new Table HH-4, MM-1 NN-1, NN-2, and TT-1.

                                    Subpart
A- General Provision
C- General Stationary Fuel Combustion Sources
E - Adipic Acid Production
G  -  Ammonia Manufacturing
H  -  Cement production
I  -  Electronics Manufacturing
K  - Ferroalloy Production
L  - Fluorinated Gas Production
N  -  Glass Production
O - HCFC-22 Production and HFC-23 Destruction
P  -  Hydrogen Production
Q  - Iron & Steel Production
S  -  Lime Manufacturing
V- Nitric Acid Production
X  -  Petrochemical Production
Y  -  Petroleum Refineries
Z - Phosphoric Acid Production
AA - Pulp & Paper Manufacturing
BB - Silicon Carbide Production
DD - Electrical Transmission and Distribution Equipment Use
FF - Underground Coal Mines
HH  -  Municipal Solid Waste Landfills
II - Industrial Wastewater Treatment
MM- Suppliers of Petroleum Products
NN  -  Suppliers of Natural Gas and Natural Gas Liquids
PP  -  Suppliers of Carbon Dioxide
QQ - Importers and  Exporters of  Fluorinated Greenhouse Gases Contained in Pre-Charged Equipment or Closed Cell Foams
RR - Geologic Sequestration of Carbon Dioxide
SS - Electrical Equipment Manufacture or Refurbishment
TT - Industrial Waste Landfills
UU - Injection of Carbon Dioxide

  3.0	SUMMARY OF TECHNICAL CORRECTIONS AND OTHER AMENDMENTS
The following table summarizes the amendments for various subparts of Part 98 which are being addressed by the 2013 Revisions to the Greenhouse Gas Reporting Rule. Where applicable, we have indicated where the rule text has been revised following proposal. For these items, the rationale for minor editing changes (typos, formatting) is in the table. The rationale for more significant rule changes is included in the final preamble or the EPA's response to comment document in Docket Id. No. EPA-HQ-OAR-2012-0934, as indicated.

                                   Subpart
Requirement
                               Current Rule Text
                                Final Rule Text
                            Revised from Proposal?
                             Rationale for Change
                                       A
98.3(c)(1)
98.3(c)(1) Facility name or supplier name (as appropriate), and physical street address of the facility or supplier, including the city, State, and zip code.
98.3(c)(1) Facility name or supplier name (as appropriate), and physical street address of the facility or supplier, including the city, State, and zip code. If the facility does not have a physical street address, then the facility must provide the latitude and longitude representing the geographic centroid or center point of facility operations in decimal degree format. This must be provided in a comma-delimited "latitude, longitude" coordinate pair reported in decimal degrees to at least four digits to the right of the decimal point.
Yes
See final preamble text for explanation
                                       A
98.3(c)(11)
(None)
(viii) The facility or supplier must refer to the reporting instructions of the electronic GHG reporting tool regarding standardized conventions for the naming of a parent company.

See proposal preamble (77 FR 19802)
                                       A
98.3(c )(13)
(None)
(13) An indication of whether the facility includes one or more plant sites that have been assigned a "plant code" (as defined under §98.6) by either the Department of Energy's Energy Information Administration or by the EPA's Clean Air Markets Division.
Yes
See final preamble text for explanation
                                       A
98.3(h)(4)
(4) Notwithstanding paragraphs (h)(1) and (h)(2) of this section, upon request by the owner or operator, the Administrator may provide reasonable extensions of the 45-day period for submission of the revised report or information under paragraphs (h)(1) and (h)(2) of this section. If the Administrator receives a request for extension of the 45-day period, by e-mail to an address prescribed by the Administrator, at least two days prior to the expiration of the 45-day period, and the Administrator does not respond to the request by the end of such period, the extension request is deemed to be automatically granted for 30 more days. During the automatic 30-day extension, the Administrator will determine what extension, if any, beyond the automatic extension is reasonable and will provide any such additional extension.
(4) Notwithstanding paragraphs (h)(1) and (h)(2) of this section, upon request by the owner or operator, the Administrator may provide reasonable extensions of the 45-day period for submission of the revised report or information under paragraphs (h)(1) and (h)(2) of this section. If the Administrator receives a request for extension of the 45-day period, by e-mail to an address prescribed by the Administrator prior to the expiration of the 45-day period, the extension request is deemed to be automatically granted for 30 days. The Administrator may grant an additional extension beyond the automatic 30-day extension if the owner or operator submits a request for an additional extension and the request is received by the Administrator at least 5 business days prior to the expiration of the automatic 30-day extension, provided the request demonstrates that it is not practicable to submit a revised report or information under paragraphs (h)(1) and (h)(2) with 75 days. The Administrator will approve the extension request  if the request demonstrates to the Administrator's satisfaction that it is not practicable to collect and process the data needed to resolve potential reporting errors identified pursuant to paragraphs (h)(1) or (h)(2) of this section within 75 days.

See proposal preamble (77 FR 19802)
                                       A
98.3(j)(3)(ii)
(ii) Any subsequent extensions to the original request must be submitted to the Administrator within 4 weeks of the owner or operator identifying the need to extend the request, but in any event no later than 4 weeks before the date for the planned process equipment or unit shutdown that was provided in the original request.
(ii) Any subsequent extensions to the original request must be submitted to the Administrator within 4 weeks of the owner or operator identifying the need to extend the request, but in any event no later than 4 weeks before the date for the planned process equipment or unit shutdown that was provided in the original or most recently approved request.

Clarifies BAMM requirement.
                                       A
98.3(k)(1)
(None)
(k) Revised global warming potentials and special provisions for reporting year 2013. This paragraph (k) applies to owners or operators of facilities or suppliers that first become subject to any subpart of part 98 solely due to an amendment to Table A-1 of this subpart.
(1) A facility or supplier that was not subject to any subpart of part 98 for reporting year 2012, but first becomes subject to any subpart of  part 98 due to a change in the GWP for one or more compounds in Table A-1 of this subpart, Global Warming Potentials, is not required to submit an annual GHG report for reporting year 2013.

See final preamble text for explanation
                                       A
98.3(k)(2)
(None)
(2) A facility or supplier that is subject to a subpart of part 98 for reporting year 2012, but first becomes subject to any subpart of part 98 due to a change in the GWP for one or more compounds in Table A-1 of this subpart, is not required to include those subparts for which the facility is subject only due to the change in the GWP in the annual GHG report submitted for reporting year 2013.
Yes
See final preamble text for explanation. Minor text edits in final rule.
                                       A
98.3(k)(3)
(None)
(3) Starting on January 1, 2014, facilities or suppliers identified in paragraphs (k)(1) or (k)(2) of this section must start monitoring and collecting GHG data in compliance with the  applicable subparts of part 98 for which the facility is subject due to the change in the GWP for the annual greenhouse gas report for reporting year 2014, which is due by March 31, 2015.

                                       A
98.3(l)
(None)
(l) Special provision for best available monitoring methods in 2014. This paragraph (l) applies to owners or operators of facilities or suppliers that first become subject to any subpart of part 98 due to an amendment to Table A-1 of this subpart, Global Warming Potentials.

See final preamble text for explanation
                                       A
98.3(l)(1)
(None)
(1) Best available monitoring methods.   From January 1, 2014 to March 31, 2014, owners or operators subject to this paragraph may use best available monitoring methods for any parameter (e.g., fuel use, feedstock rates) that cannot reasonably be measured according to the monitoring and QA/QC requirements of a relevant subpart. The owner or operator must use the calculation methodologies and equations in the "Calculating GHG Emissions" sections of each relevant subpart, but may use the best available monitoring method for any parameter for which it is not reasonably feasible to acquire, install, and operate a required piece of monitoring equipment by January 1, 2014. Starting no later than April 1, 2014, the owner or operator must discontinue using best available methods and begin following all applicable monitoring and QA/QC requirements of this part, except as provided in paragraph (l)(2) of this section. Best available monitoring methods means any of the following methods:

See final preamble text for explanation
                                       A
98.3(l)(1)(i)-(iv)
(None)
(i) Monitoring methods currently used by the facility that do not meet the specifications of a relevant subpart.
(ii) Supplier data.
(iii) Engineering calculations.
(iv) Other company records.

See final preamble text for explanation
                                       A
98.3(l)(2)
(None)
(2) Requests for extension of the use of best available monitoring methods. The owner or operator may submit a request to the Administrator to use one or more best available monitoring methods beyond March 31, 2014.
(i) Timing of request. The extension request must be submitted to EPA no later than January 31, 2014.
(ii) Content of request. Requests must contain the following information:

See final preamble text for explanation
                                       A
98.3(l)(2)(ii)(A)
(None)
(A) A list of specific items of monitoring instrumentation for which the request is being made and the locations where each piece of monitoring instrumentation will be installed.

See final preamble text for explanation
                                       A
98.3(l)(2)(ii)(B)
(None)
(B) Identification of the specific rule requirements (by rule subpart, section, and paragraph numbers) for which the instrumentation is needed.

See final preamble text for explanation
                                       A
98.3(l)(2)(ii)(C)
(None)
(C) A description of the reasons that the needed equipment could not be obtained and installed before April 1, 2014.

See final preamble text for explanation
                                       A
98.3(l)(2)(ii)(D)
(None)
(D) If the reason for the extension is that the equipment cannot be purchased and delivered by April 1, 2014, supporting documentation such as the date the monitoring equipment was ordered, investigation of alternative suppliers and the dates by which alternative vendors promised delivery, backorder notices or unexpected delays, descriptions of actions taken to expedite delivery, and the current expected date of delivery.

See final preamble text for explanation
                                       A
98.3(l)(2)(ii)(E)
(None)
(E) If the reason for the extension is that the equipment cannot be installed without a process unit shutdown, include supporting documentation demonstrating that it is not practicable to isolate the equipment and install the monitoring instrument without a full process unit shutdown. Include the date of the most recent process unit shutdown, the frequency of shutdowns for this process unit, and the date of the next planned shutdown during which the monitoring equipment can be installed. If there has been a shutdown or if there is a planned process unit shutdown between [THE DATE OF PUBLICATION OF THE FINAL RULE IN THE FEDERAL REGISTER] and April 1, 2014, include a justification of why the equipment could not be obtained and installed during that shutdown.

See final preamble text for explanation
                                       A
98.3(l)(2)(ii)(F)
(None)
(F) A description of the specific actions the facility will take to obtain and install the equipment as soon as reasonably feasible and the expected date by which the equipment will be installed and operating.

See final preamble text for explanation
                                       A
98.3(l)(2)(iii)
(None)
(iii) Approval criteria. To obtain approval, the owner or operator must demonstrate to the Administrator's satisfaction that it is not reasonably feasible to acquire, install, and operate a required piece of monitoring equipment by April 1, 2014. The use of best available methods under this paragraph (l) will not be approved beyond December 31, 2014.

See final preamble text for explanation
                                       A
98.6
Continuous bleed means a continuous flow of pneumatic supply gas to the process measurement device (e.g. level control, temperature control, pressure control) where the supply gas pressure is modulated by the process condition, and then flows to the valve controller where the signal is compared with the process set-point to adjust gas pressure in the valve actuator.

Continuous bleed means a continuous flow of pneumatic supply natural gas to the process control device (e.g. level control, temperature control, pressure control) where the supply gas pressure is modulated by the process condition, and then flows to the valve controller where the signal is compared with the process set-point to adjust gas pressure in the valve actuator.

Clarifies definition
                                       A
98.6
Degasification system means the entirety of the equipment that is used to drain gas from underground and collect it at a common point, such as a vacuum pumping station. This includes all degasification wells and gob gas vent holes at the underground coal mine. Degasification systems include surface pre-mining, horizontal pre-mining, and post-mining systems.
Degasification system means the entirety of the equipment that is used to drain gas from underground coal mines. This includes all degasification wells and gob gas vent holes at the underground coal mine. Degasification systems include gob and premine surface drainage wells, gob and premine in-mine drainage wells, and in-mine gob and premine cross-measure borehole wells.

See proposal preamble (77 FR 19802)
                                       A
98.6
Intermittent bleed pneumatic devices mean automated flow control devices powered by pressurized natural gas and used for maintaining a process condition such as liquid level, pressure, delta-pressure and temperature. These are snap-acting or throttling devices that discharge the full volume of the actuator intermittently when control action is necessary, but does not bleed continuously.

Intermittent bleed pneumatic devices mean automated flow control devices powered by pressurized natural gas and used for automatically maintaining a process condition such as liquid level, pressure, delta-pressure and temperature. These are snap-acting or throttling devices that discharge all or a portion of the full volume of the actuator intermittently when control action is necessary, but does not bleed continuously.

See proposal preamble (77 FR 19802)
                                       A
98.6
98.6 No definition
Plant code means either of the following:
(1) The Plant ID code assigned by the Department of Energy's Energy Information Administration.  The Energy Information Administration Plant ID code is also referred to as the "ORIS code", "ORISPL code," "Facility ID", or "Facility code", among other names.
(2) If a Plant ID code has not been assigned by the Department of Energy's Energy Information Administration, then plant code means a code beginning with "88" assigned by the EPA's Clean Air Markets Division for electronic reporting.

Yes
See final preamble text for explanation
                                       A
98.6
Ventilation well or shaft means a well or shaft employed at an underground coal mine to serve as the outlet or conduit to move air from the ventilation system out of the mine.
Ventilation hole or shaft means a vent hole or shaft employed at an underground coal mine to serve as the outlet or conduit to move air from the ventilation system out of the mine.

See proposal preamble (77 FR 19802)
                                       A
98.6
Ventilation system means a system that is used to control the concentration of methane and other gases within mine working areas through mine ventilation, rather than a mine degasification system. A ventilation system consists of fans that move air through the mine workings to dilute methane concentrations. This includes all ventilation shafts and wells at the underground coal mine.
Ventilation system means a system that is used to control the concentration of methane and other gases within mine working areas through mine ventilation, rather than a mine degasification system. A ventilation system consists of fans that move air through the mine workings to dilute methane concentrations.

See proposal preamble (77 FR 19802)
                                       A
98.7(n)
(n) The following material is available from the International SEMATECH Manufacturing Initiative, 2706 Montopolis Drive, Austin, Texas 78741,<PHONE_NUMBER>, http://ismi.sematech.org.
(1) Guideline for Environmental Characterization of Semiconductor Process Equipment, International SEMATECH Manufacturing Initiative Technology Transfer #06124825A-ENG, December 22, 2006 (International SEMATECH #06124825A-ENG), IBR approved for §98.94(d), §98.94(d)(1), §98.94(e), §98.94(e)(1), §98.94(g)(1), §98.96(f)(4), and §98.97(b)(1).
(2) [Reserved]

(n) [Reserved]

Yes
Harmonizing change with revision to paragraph 98.96(y)(3)(i).
                                       A
Table A-1
Table A-1
See Appendix A for changes to Table A-1

See final preamble text for explanation
                                       A
Table A-6
Table A-6
See Appendix A for changes to Table A-6

Changed numbering of two data elements for subpart HH
                                       C
98.33(b)(1)
(None)
(viii) May be used for the combustion of a fuel listed in Table C-1 if the fuel is combusted in a unit with a maximum rated heat input capacity greater than 250 mmBtu/hr (or, pursuant to §98.36(c)(3), in a group of units served by a common supply pipe, having at least one unit with a maximum rated heat input capacity greater than 250 mmBtu/hr), provided that both of the following conditions apply:
(A) The use of Tier 4 is not required.
(B) The fuel provides less than 10 percent of the annual heat input to the unit, or if §98.36(c)(3) applies, to the group of units served by a common supply pipe.

See proposal preamble (77 FR 19802)
                                       C
98.33(b)(3)(ii)(A)
(A) The use of Tier 1 or 2 is permitted, as described in paragraphs (b)(1)(iii), (b)(1)(v), and (b)(2)(ii) of this section.
(A) The use of Tier 1 or 2 is permitted, as described in paragraphs (b)(1)(iii), (b)(1)(v), (b)(1)(viii), and (b)(2)(ii) of this section.

Harmonizing change with addition of paragraph 98.33(b)(1)(viii).
                                       C
98.33(e)(1)(ii)
(ii) The procedures in paragraph (e)(5) of this section.
(ii) The procedures in paragraph (e)(4) of this section.

Corrects reference
                                       C
98.36(b)(3)
(3) Maximum rated heat input capacity of the unit in mmBtu/hr for boilers and process heaters only and relevant units of measure for other combustion units.
(3) Maximum rated heat input capacity of the unit in mmBtu/hr.

Standardize units of measure for all reporters.
                                       C
98.36(b)(11)
None
(11) If applicable, the plant code (as defined in §98.6).
Yes
See final preamble text for explanation
                                       C
98.36(c)(1)(xi)
None
(xi) If applicable, the plant code (as defined in §98.6).
Yes
See final preamble text for explanation
                                       C
98.36(c)(2)(x)
None
(x) Reserved.
Yes
Reserved for Revisions to Reporting and Recordkeeping Requirements and Proposed Confidentiality Determinations Under the Greenhouse Gas Reporting
Program (78 FR 55994, September 11, 2013).
                                       C
98.36(c)(2)(xi)
None
(xi) If applicable, the plant code (as defined in §98.6).
Yes
See final preamble text for explanation
                                       C
98.36(c)(3)
(3) ...As a second example, in accordance with §98.33(b)(1)(v), Tier 1 may be used regardless of unit size when natural gas is transported through the common pipe, if the annual fuel consumption is obtained from gas billing records in units of therms. ...
(3) ...As a second example, in accordance with §98.33(b)(1)(v), Tier 1 may be used regardless of unit size when natural gas is transported through the common pipe, if the annual fuel consumption is obtained from gas billing records in units of therms or mmBtu. ...

Consistency across the subpart
                                       C
98.36(c)(3)(x)
None
(x) If applicable, the plant code (as defined in §98.6).
Yes
See final preamble text for explanation
                                       C
98.36(d)(1)(x)
None
(x) If applicable, the plant code (as defined in §98.6).
Yes
See final preamble text for explanation
                                       C
98.36(d)(2)(ii)(J)
None
(J) If applicable, the plant code (as defined in §98.6).
Yes
See final preamble text for explanation
                                       C
98.36(d)(2)(iii)(J)
None
(J) If applicable, the plant code (as defined in §98.6).
Yes
See final preamble text for explanation
                                       C
Table C-1
Table C-1
See Appendix A for changes to Table C-1

See proposal preamble (77 FR 19802)
                                       C
Table C-2
Table C-2
See Appendix A for changes to Table C-2

See proposal preamble (77 FR 19802)
                                       E
98.53(b)(3)
(3) You must measure the adipic acid production rate during the test and calculate the production rate for the test period in metric tons per hour.
(3) You must measure the adipic acid production rate during the test and calculate the production rate for the test period in tons per hour.

Corrects a requirement for consistency throughout the subpart.
                                       E
98.53(d)
(d) If any N2O abatement technology "N" is located after your test point, you must determine the destruction efficiency according to paragraphs (d)(1), (2), or (3) of this section.
(d) If the adipic acid production unit exhausts to any N2O abatement technology "N", you must determine the destruction efficiency according to paragraphs (d)(1), (d)(2), or (d)(3) of this section.

Clarifies requirement.
                                       E
98.53(e)
(e) If any N2O abatement technology "N" is located after your test point, you must determine the annual amount of adipic acid produced while N2O abatement technology "N" is operating according to §98.54(f). Then you must calculate the abatement factor for N2O abatement technology "N" according to Equation E - 2 of this section.
(e) If the adipic acid production unit exhausts to any N2O abatement technology "N", you must determine the annual amount of adipic acid produced while N2O abatement technology "N" is operating according to §98.54(f). Then you must calculate the abatement factor for N2O abatement technology "N" according to Equation E - 2 of this section.

Clarifies requirement.
                                       E
98.53(e)
Equation E-2

Harmonizes equation with its definition.
                                       E
98.53(g)(1)
DF = Destruction efficiency of N2O abatement technology "N" (percent of N2O removed from vent stream).
DF = Destruction efficiency of N2O abatement technology "N" (decimal fraction of N2O removed from vent stream).

Clarifies a calculation term.
                                       E
98.53(g)(1)
AF = Abatement utilization factor of N2O abatement technology "N" (percent of time that the abatement technology is operating).
AF = Abatement utilization factor of N2O abatement technology "N" (decimal fraction of time that the abatement technology is operating).

Clarifies a calculation term.
                                       E
98.53(g)(2)
DF1 = Destruction efficiency of N2O abatement technology 1 (percent of N2O removed from vent stream).
DF1 = Destruction efficiency of N2O abatement technology 1 (decimal fraction of N2O removed from vent stream).

Clarifies a calculation term.
                                       E
98.53(g)(2)
AF1 = Abatement utilization factor of N2O abatement technology 1 (percent of time that abatement technology 1 is operating).
AF1 = Abatement utilization factor of N2O abatement technology 1 (decimal fraction of time that abatement technology 1 is operating).

Clarifies a calculation term.
                                       E
98.53(g)(2)
DF2 = Destruction efficiency of N2O abatement technology 2 (percent of N2O removed from vent stream).
DF2 = Destruction efficiency of N2O abatement technology 2 (decimal fraction of N2O removed from vent stream).

Clarifies a calculation term.
                                       E
98.53(g)(2)
AF2 = Abatement utilization factor of N2O abatement technology 2 (percent of time that abatement technology 2 is operating).
AF2 = Abatement utilization factor of N2O abatement technology 2 (decimal fraction of time that abatement technology 2 is operating).

Clarifies a calculation term.
                                       E
98.53(g)(2)
DFN = Destruction efficiency of N2O abatement technology N (percent of N2O removed from vent stream).
DFN = Destruction efficiency of N2O abatement technology "N" (decimal fraction of N2O removed from vent stream).

Clarifies a calculation term.
                                       E
98.53(g)(2)
AFN = Abatement utilization factor of N2O abatement technology N (percent of time that abatement technology N is operating).
AFN = Abatement utilization factor of N2O abatement technology "N" (decimal fraction of time that abatement technology N is operating).

Clarifies a calculation term.
                                       E
98.53(g)(3)
DFN = Destruction efficiency of N2O abatement technology "N" (percent of N2O removed from vent stream).
DFN = Destruction efficiency of N2O abatement technology "N" (decimal fraction of N2O removed from vent stream).

Clarifies a calculation term.
                                       E
98.53(g)(3)
AFN = Abatement utilization factor of N2O abatement technology "N" (percent of time that the abatement technology is operating).
AFN = Abatement utilization factor of N2O abatement technology "N" (decimal fraction of time that the abatement technology is operating).

Clarifies a calculation term.
                                       E
98.53(g)(3)
FCN = Fraction control factor of N2O abatement technology "N" (percent of total emissions from unit "z" that are sent to abatement technology "N").
FCN = Fraction control factor of N2O abatement technology "N" (decimal fraction of total emissions from unit "z" that are sent to abatement technology "N").

Clarifies a calculation term.
                                       E
98.54(e)
(e) You must determine the monthly amount of adipic acid produced. You must also determine the monthly amount of adipic acid produced during which N2O abatement technology, located after the test point, is operating. These monthly amounts are determined according to the methods in paragraphs (c)(1) or (2) of this section.
(e) You must determine the monthly amount of adipic acid produced. You must also determine the monthly amount of adipic acid produced during which N2O abatement technology is operating. These monthly amounts are determined according to the methods in paragraphs (c)(1) or (c)(2) of this section.

Corrects a requirement for consistency throughout the subpart.
                                       E
98.54(f)
(f) You must determine the annual amount of adipic acid produced. You must also determine the annual amount of adipic acid produced during which N2O abatement technology located after the test point is operating. These are determined by summing the respective monthly adipic acid production quantities determined in paragraph (e) of this section.
(f) You must determine the annual amount of adipic acid produced. You must also determine the annual amount of adipic acid produced during which N2O abatement technology is operating. These are determined by summing the respective monthly adipic acid production quantities determined in paragraph (e) of this section.

Corrects a requirement for consistency throughout the subpart.
                                       G
98.73(b)(4)
(4) You must calculate the annual process CO2 emissions from each ammonia processing unit k at your facility summing emissions, as applicable from Equation G - 1, G - 2, and G - 3 of this section using Equation G - 4.
(4) You must calculate the annual process CO2 emissions from each ammonia processing unit k at your facility according to Equation G-4 of this section:

Clarifies calculation methodologies.
                                       G
98.73(b)(4)
Equation G-4

 (Eq. G-4)

Corrects a calculation term
                                       G
98.73(b)(5)
Equation G-5

 (Eq. G-5)

Corrects a calculation term
                                       G
98.73(b)(5)
ECO2k = Annual CO2 emissions from each ammonia processing unit (metric tons).
ECO2,k = Annual CO2 emissions from each ammonia processing unit k (metric tons).

Clarifies a calculation term.
                                       G
98.73(b)(5)
n = Total number of ammonia processing units.
j = Total number of ammonia processing units.

Corrects a calculation term
                                       G
98.75(b)
(b) For missing feedstock supply rates or waste recycle stream used to determine monthly feedstock consumption or monthly waste recycle stream quantity, you must determine the best available estimate(s) of the parameter(s), based on all available process data.
(b) For missing feedstock supply rates used to determine monthly feedstock consumption, you must determine the best available estimate(s) of the parameter(s), based on all available process data.

Correction to missing data procedures to remove reference to parameters that are no longer part of the regulations.
                                       G
98.76(a)
(a) If a CEMS is used to measure CO2 emissions, then you must report the relevant information required under §98.36 for the Tier 4 Calculation Methodology and the following information in this paragraph (a):
(a) If a CEMS is used to measure CO2 emissions, then you must report the relevant information required under §98.36 for the Tier 4 Calculation Methodology and the information in paragraphs (a)(1) and (a)(2) of this section:

Clarifies a requirement.
                                       G
98.76(b)
(b) If a CEMS is not used to measure emissions, then you must report the following information:
(b) If a CEMS is not used to measure emissions, then you must report all of the following information in this paragraph (b):

Clarifies that all information must be reported.
                                       G
98.76(b)(13)
(13) CO2 from the steam reforming of a hydrocarbon or the gasification of solid and liquid raw material at the ammonia manufacturing process unit used to produce urea and the method used to determine the CO2 consumed in urea production.
(13) Annual CO2 emissions (metric tons) from the steam reforming of a hydrocarbon or the gasification of solid and liquid raw material at the ammonia manufacturing process unit used to produce urea and the method used to determine the CO2 consumed in urea production.

Clarifies the units of the CO2 emissions.
                                       H
98.86(a)(2)
(2) Monthly cement production from each kiln at the facility.
(2)Annual facility cement production.

See proposal preamble (77 FR 19802)
                                       I
98.96(y)(3)(i)
(i) The testing of tools to determine the potential effect on current utilization and by-product formation rates and destruction or removal efficiency values under the new conditions. You must follow the QA/QC procedures in the International SEMATECH #60124825A-ENG (incorporated by reference, see § 98.7) when measuring and calculating process sub-type and process type fluorinated GHG and N2O utilization and by-product formation rates.
(i) The testing of tools to determine the potential effect on current utilization and by-product formation rates and destruction or removal efficiency values under the new conditions.
Yes
See final preamble text for explanation.
                                       K
98.113(d)(1)
Equation K-3
2000/2205 = Conversion factor to convert
tons to metric tons.

2/2205 = Conversion factor to convert kg CH4/ton of product to metric tons CH4.

See proposal preamble (77 FR 19802)
                                       K
98.116(e)(2)
No current requirement
(2) Annual process CH4 emissions (in metric tons) from each EAF used for the production of any ferroalloy listed in Table K - 1 of this subpart.

See proposal preamble (77 FR 19802)
                                       L
98.126(j) Introductory paragraph
(j) Special provisions for reporting years 2011 and 2012 only. For reporting years 2011 and 2012, the owner or operator of a facility must comply with paragraphs (j)(1), (j)(2), and (j)(3) of this section.
(j) Special provisions for reporting years 2011, 2012, and 2013 only. For reporting years 2011, 2012, and 2013, the owner or operator of a facility must comply with paragraphs (j)(1), (j)(2), and (j)(3) of this section.

See proposal preamble (77 FR 19802)
                                       L
98.126(j)(1)
(1) Timing. The owner or operator of a facility is not required to report the data elements at §98.3(c)(4)(iii) and §98.126(a)(2), (a)(3), (a)(4), (a)(6), (b), (c), (d), (e), (f), (g), and (h) of this section until the later of March 31, 2014 or the date set forth for that data element at §98.3(c)(4)(vii) and Table A - 7 of Subpart A of this part.
(1) Timing. The owner or operator of a facility is not required to report the data elements at §98.3(c)(4)(iii) and paragraphs (a)(2), (a)(3), (a)(4), (a)(6), (b), (c), (d), (e), (f), (g), and (h) of this section until the later of March 31, 2015 or the date set forth for that data element at §98.3(c)(4)(vii) and Table A - 7 of Subpart A of this part.

See proposal preamble (77 FR 19802)
                                       L
98.126(j)(3)(i)
(i) If you choose to use a default GWP rather than your best estimate of the GWP for fluorinated GHGs whose GWPs are not listed in Table A - 1 to this subpart, use a default GWP of 10,000 for fluorinated GHGs that are fully fluorinated GHGs and use a default GWP of 2000 for other fluorinated GHGs.

(i) If you choose to use a default GWP rather than your best estimate of the GWP for fluorinated GHGs whose GWPs are not listed in Table A - 1 of subpart A of this part, use a default GWP of 10,000 for fluorinated GHGs that are fully fluorinated GHGs and use a default GWP of 2000 for other fluorinated GHGs.

Correction to referenced table
                                       N
98.143
Introductory paragraph
You must calculate and report the annual process CO2 emissions from each continuous glass melting furnace using the procedure in paragraphs (a) and (b) of this section.
You must calculate and report the annual process CO2 emissions from each continuous glass melting furnace using the procedure in paragraphs (a) through (c) of this section.

Corrects reference
                                       N
98.143(b)
(b) For each continuous glass melting furnace that is not subject to the requirements in paragraph (a) of this section, calculate and report the process and combustion CO2 emissions from the glass melting furnace by using either the procedure in paragraph (b)(1) of this section or the procedure in paragraphs (b)(2) through (b)(7) of this section, except as specified in paragraph (c) of this section.
(b) For each continuous glass melting furnace that is not subject to the requirements in paragraph (a) of this section, calculate and report the process and combustion CO2 emissions from the glass melting furnace by using either the procedure in paragraph (b)(1) of this section or the procedure in paragraph (b)(2) of this section, except as specified in paragraph (c) of this section.

Corrects reference
                                       N
98.143(b)(2)(iv)
MFi = Annual average mass fraction of carbonate-based mineral i in carbonate-based raw material i (percentage, expressed as a decimal).
MFi = Annual average decimal mass fraction of carbonate-based mineral i in carbonate-based raw material i.

Clarifies the equation term
                                       N
98.143(b)(2)(iv)
Fi = Fraction of calcination achieved for carbonate-based raw material i, assumed to be equal to 1.0  (percentage, expressed as a decimal).
Fi = Decimal fraction of calcination achieved for carbonate-based raw material i, assumed to be equal to 1.0.

Clarifies the equation term
                                       N
98.144(b)
(b) You must measure carbonate-based mineral mass fractions at least annually to verify the mass fraction data provided by the supplier of the raw material; such measurements shall be based on sampling and chemical analysis using ASTM D3682 - 01 (Reapproved 2006) Standard Test Method for Major and Minor Elements in Combustion Residues from Coal Utilization Processes (incorporated by reference, see §98.7) or ASTM D6349 - 09 Standard Test Method for Determination of Major and Minor Elements in Coal, Coke, and Solid Residues from Combustion of Coal and Coke by Inductively Coupled Plasma -- Atomic Emission Spectrometry (incorporated by reference, see §98.7).
(b) You must measure carbonate-based mineral mass fractions at least annually to verify the mass fraction data provided by the supplier of the raw material; such measurements shall be based on sampling and chemical analysis using consensus standards that specify X-ray fluorescence. For measurements made in years prior to the emissions reporting year 2014, you may also use ASTM D3682 - 01 (Reapproved 2006) Standard Test Method for Major and Minor Elements in Combustion Residues from Coal Utilization Processes (incorporated by reference, see §98.7) or ASTM D6349 - 09 Standard Test Method for Determination of Major and Minor Elements in Coal, Coke, and Solid Residues from Combustion of Coal and Coke by Inductively Coupled Plasma -- Atomic Emission Spectrometry (incorporated by reference, see §98.7).

See proposal preamble (77 FR 19802)
                                       N
98.146(b)(4)
(4) Carbonate-based mineral mass fraction (percentage, expressed as a decimal) for each carbonate-based raw material charged to a continuous glass melting furnace.
(4) Carbonate-based mineral decimal mass fraction for each carbonate-based raw material charged to a continuous glass melting furnace.

Clarifies the requirement
                                       N
98.146(b)(6)
(6) The fraction of calcination achieved for each carbonate-based raw material, if a value other than 1.0 is used to calculate process mass emissions of CO2.
(6) The decimal fraction of calcination achieved for each carbonate-based raw material, if a value other than 1.0 is used to calculate process mass emissions of CO2.

Clarifies the requirement
                                       N
98.146(b)(7)
(7) Method used to determine fraction of calcination.
(7) Method used to determine decimal fraction of calcination.

Clarifies the requirement
                                       N
98.147(b)(5)
(5) The fraction of calcination achieved for each carbonate-based raw material (percentage, expressed as a decimal), if a value other than 1.0 is used to calculate process mass emissions of CO2.
(5) The decimal fraction of calcination achieved for each carbonate-based raw material, if a value other than 1.0 is used to calculate process mass emissions of CO2.

Clarifies the requirement
                                       O
98.153(c)
(c) For HCFC - 22 production facilities that do not use a thermal oxidizer or that have a thermal oxidizer that is not directly connected to the HCFC - 22 production equipment, HFC - 23 emissions shall be estimated using Equation O - 4 of this section:
(c) For HCFC - 22 production facilities that do not use a destruction device or that have a destruction device that is not directly connected to the HCFC - 22 production equipment, HFC - 23 emissions shall be estimated using Equation O - 4 of this section:

Harmonizing change for consistency of destruction device terminology within subpart.
                                       O
98.153(d)
(d) For HCFC - 22 production facilities that use a thermal oxidizer connected to the HCFC - 22 production equipment, HFC - 23 emissions shall be estimated using Equation O - 5 of this section:
 (Eq. O-5)
Where:
ED = Mass of HFC - 23 emitted annually from thermal oxidizer (metric tons), calculated using Equation O - 8 of this section.
(d) For HCFC - 22 production facilities that use a destruction device connected to the HCFC - 22 production equipment, HFC - 23 emissions shall be estimated using Equation O - 5 of this section:
 (Eq. O-5)
Where:
ED = Mass of HFC - 23 emitted annually from destruction device (metric tons), calculated using Equation O - 8 of this section.

Harmonizing change for consistency of destruction device terminology within subpart.
                                       O
98.154(j)

(j) The number of sources of equipment type t with screening values less than 10,000 ppmv shall be the difference between the number of leak sources of equipment type t that could emit HFC-23 and the number of sources of equipment type t with screening values greater than or equal to 10,000 ppmv as determined under paragraph (h) of this section.

(j) The number of sources of equipment type t with screening values less than 10,000 ppmv shall be the difference between the number of leak sources of equipment type t that could emit HFC-23 and the number of sources of equipment type t with screening values greater than or equal to 10,000 ppmv as determined under paragraph (i) of this section.

Correct paragraph reference.
                                       O
98.156(c)

(c) Each HFC-23 destruction facility shall report the concentration (mass fraction) of HFC-23 measured at the outlet of the destruction device during the facility's annual HFC-23 concentration measurements at the outlet of the device.
(c) Each HFC-23 destruction facility shall report the concentration (mass fraction) of HFC-23 measured at the outlet of the destruction device during the facility's annual HFC-23 concentration measurements at the outlet of the device. If the concentration of HFC-23 is below the detection limit of the measuring device, report the detection limit and that the concentration is below the detection limit.

See proposal preamble (77 FR 19802)
                                       P
98.163(b)
(b) Fuel and feedstock material balance approach. Calculate and report CO2 emissions as the sum of the annual emissions associated with each fuel and feedstock used for hydrogen production by following paragraphs (b)(1) through (b)(3) of this section.
(b) Fuel and feedstock material balance approach. Calculate and report CO2 emissions as the sum of the annual emissions associated with each fuel and feedstock used for hydrogen production by following paragraphs (b)(1) through (b)(3) of this section. The carbon content and molecular weight shall be obtained from the analyses conducted in accordance with §98.164(b)(2), (b)(3), or (b)(4), as applicable, or from the missing data procedures in §98.165. If the analyses are performed annually, then the annual value shall be used as the monthly average. If the analyses are performed more frequently than monthly, use the arithmetic average of values obtained during the month as the monthly average.

See proposal preamble (77 FR 19802)
                                       P
98.163(b)(1)
Fdstkn = Volume of the gaseous fuel and feedstock used in month n (scf (at standard conditions of 68 °F and atmospheric pressure) of fuel and feedstock).
CCn = Average carbon content of the gaseous fuel and feedstock, from the results of one or more analyses for month n (kg carbon per kg of fuel and feedstock). If measurements are taken more frequently than monthly, use the arithmetic average of measurement values within the month to calculate a monthly average.
MWn = Average molecular weight of the gaseous fuel and feedstock from the results of one or more analyses for month n (kg/kg-mole).
Fdstkn = Volume or mass of the gaseous fuel or feedstock used in month n (scf (at standard conditions of 68 °F and atmospheric pressure) or kg of fuel or feedstock).
CCn = Average carbon content of the gaseous fuel or feedstock for month n (kg carbon per kg of fuel or feedstock).
MWn = Average molecular weight of the gaseous fuel or feedstock for month n (kg/kg-mole). If you measure mass, the term "MWn/MVC" is replaced with "1".
Yes
See final preamble text for explanation
                                       P
98.163(b)(2)
Fdstkn = Volume of the liquid fuel and feedstock used in month n (gallons of fuel and feedstock).
CCn = Average carbon content of the liquid fuel and feedstock, from the results of one or more analyses for month n (kg carbon per gallon of fuel and feedstock).
Fdstkn =Volume or mass of the liquid fuel or feedstock used in month n (gallons or kg of fuel or feedstock).
CCn = Average carbon content of the liquid fuel or feedstock, for month n (kg carbon per gallon or kg of fuel or feedstock).
Yes
See final preamble text for explanation
                                       P
98.163(b)(3)
Fdstkn = Mass of solid fuel and feedstock used in month n (kg of fuel and feedstock).
CCn = Average carbon content of the solid fuel and feedstock, from the results of one or more analyses for month n (kg carbon per kg of fuel and feedstock).
Fdstkn = Mass of solid fuel or feedstock used in month n (kg of fuel or feedstock).
CCn = Average carbon content of the solid fuel or feedstock, for month n (kg carbon per kg of fuel or feedstock).

Clarifies equation terms
                                       P
98.164(b)(3)
(3) Determine the carbon content of fuel oil, naphtha, and other liquid fuels and feedstocks at least monthly, except annually for standard liquid hydrocarbon fuels and feedstocks having consistent composition, or upon delivery for liquid fuels delivered by bulk transport (e.g., by truck or rail).
(3) Determine the carbon content of fuel oil, naphtha, and other liquid fuels and feedstocks at least monthly, except annually for standard liquid hydrocarbon fuels and feedstocks having consistent composition, or upon delivery for liquid fuels and feedstocks delivered by bulk transport (e.g., by truck or rail).

See proposal preamble (77 FR 19802)
                                       P
98.164(b)(4)
(4) Determine the carbon content of coal, coke, and other solid fuels and feedstocks at least monthly, except annually for standard solid hydrocarbon fuels and feedstocks having consistent composition, or upon delivery for solid fuels delivered by bulk transport (e.g., by truck or rail).
(4) Determine the carbon content of coal, coke, and other solid fuels and feedstocks at least monthly, except annually for standard solid hydrocarbon fuels and feedstocks having consistent composition, or upon delivery for solid fuels and feedstocks delivered by bulk transport (e.g., by truck or rail).

See proposal preamble (77 FR 19802)
                                       P
98.164(b)(5)
(5) You must use the following applicable methods to determine the carbon content for all fuels and feedstocks, and molecular weight of gaseous fuels and feedstocks. Alternatively, you may use the results of continuous chromatographic analysis of the fuel and feedstock, provided that the gas chromatograph (GC) is operated, maintained, and calibrated according to the manufacturer's instructions; and the methods used for operation, maintenance, and calibration of the GC are documented in the written monitoring plan for the unit under §98.3(g)(5).

(5) You must use the following applicable methods to determine the carbon content for all fuels and feedstocks, and molecular weight of gaseous fuels and feedstocks. Alternatively, you may use the results of chromatographic analysis of the fuel and feedstock, provided that the chromatograph is operated, maintained, and calibrated according to the manufacturer's instructions; and the methods used for operation, maintenance, and calibration of the chromatograph are documented in the written monitoring plan for the unit under §98.3(g)(5).

See proposal preamble (77 FR 19802)
                                       P
98.164(c)
(c) For units using the calculation methodologies described in this section, the records required under §98.3(g) must include both the company records and a detailed explanation of how company records are used to estimate the following:
(1) Fuel and feedstock consumption, when solid fuel and feedstock is combusted and a CEMS is not used to measure GHG emissions.
(2) Fossil fuel consumption, when, pursuant to §98.33(e), the owner or operator of a unit that uses CEMS to quantify CO2 emissions and that combusts both fossil and biogenic fuels separately reports the biogenic portion of the total annual CO2 emissions.
(3) Sorbent usage, if the methodology in §98.33(d) is used to calculate CO2 emissions from sorbent.
None

See proposal preamble (77 FR 19802)
                                       P
98.164(d)
(d) The owner or operator must document the procedures used to ensure the accuracy of the estimates of fuel and feedstock usage and sorbent usage (as applicable) in paragraph (b) of this section, including, but not limited to, calibration of weighing equipment, fuel and feedstock flow meters, and other measurement devices. The estimated accuracy of measurements made with these devices must also be recorded, and the technical basis for these estimates must be provided.
None

See proposal preamble (77 FR 19802)
                                       P
98.166(a)(2) -(a)(3)
(2) Annual quantity of hydrogen produced (metric tons) for each process unit and for all units combined.
(3) Annual quantity of ammonia produced (metric tons), if applicable, for each process unit and for all units combined.
(2) Annual quantity of hydrogen produced (metric tons) for each process unit.
(3) Annual quantity of ammonia produced (metric tons), if applicable for each process unit.

See proposal preamble (77 FR 19802)
                                       P
98.166(b)(2)
(2) Monthly consumption of each fuel and feedstock used for hydrogen production and its type (scf of gaseous fuels and feedstocks, gallons of liquid fuels and feedstocks, kg of solid fuels and feedstocks).

(2) Monthly consumption of each fuel and feedstock used for hydrogen production and its type (scf or kg of gaseous fuels and feedstocks, gallons or kg of liquid fuels and feedstocks, kg of solid fuels and feedstocks).

Yes
See final preamble text for explanation
                                       P
98.166(b)(5)
(5) Monthly analyses of carbon content for each fuel and feedstock used in hydrogen production (kg carbon/kg of gaseous and solid fuels and feedstocks, (kg carbon per gallon of liquid fuels and feedstocks).

(5) Monthly analyses of carbon content for each fuel and feedstock used in hydrogen production (kg carbon/kg of gaseous and solid fuels and feedstocks, kg carbon per gallon or kg of liquid fuels and feedstocks).

Yes
See final preamble text for explanation
                                       P
98.167(c )
(None)
(c) For units using the calculation methodologies described in 98.163(b), the records required under §98.3(g) must include both the company records and a detailed explanation of how company records are used to estimate the following:
(1) Fuel and feedstock consumption, when solid fuel and feedstock is combusted and a CEMS is not used to measure GHG emissions.
(2) Fossil fuel consumption, when, pursuant to §98.33(e), the owner or operator of a unit that uses CEMS to quantify CO2 emissions and that combusts both fossil and biogenic fuels separately reports the biogenic portion of the total annual CO2 emissions.
(3) Sorbent usage, if the methodology in §98.33(d) is used to calculate CO2 emissions from sorbent.
Yes
See proposal preamble (77 FR 19802). Final rule corrects typo.
                                       P
98.167(d)
(None)
(d) The owner or operator must document the procedures used to ensure the accuracy of the estimates of fuel and feedstock usage and sorbent usage (as applicable) in 98.163(b), including, but not limited to, calibration of weighing equipment, fuel and feedstock flow meters, and other measurement devices. The estimated accuracy of measurements made with these devices must also be recorded, and the technical basis for these estimates must be provided.

See proposal preamble (77 FR 19802)
                                       Q
98.170
Introductory paragraph
98.170 Definition of the source category.
The iron and steel production source category includes facilities with any of the following processes: taconite iron ore processing, integrated iron and steel manufacturing, cokemaking not colocated with an integrated iron and steel manufacturing process, and electric arc furnace (EAF) steelmaking not colocated with an integrated iron and steel manufacturing process. Integrated iron and steel manufacturing means the production of steel from iron ore or iron ore pellets. At a minimum, an integrated iron and steel manufacturing process has a basic oxygen furnace for refining molten iron into steel. Each cokemaking process and EAF process located at a facility with an integrated iron and steel manufacturing process is part of the integrated iron and steel manufacturing facility.
98.170 Definition of the source category.
The iron and steel production source category includes facilities with any of the following processes: taconite iron ore processing, integrated iron and steel manufacturing, cokemaking not collocated with an integrated iron and steel manufacturing process, direct reduction furnaces not collocated with an integrated iron and steel manufacturing process, and electric arc furnace (EAF) steelmaking not collocated with an integrated iron and steel manufacturing process. Integrated iron and steel manufacturing means the production of steel from iron ore or iron ore pellets. At a minimum, an integrated iron and steel manufacturing process has a basic oxygen furnace for refining molten iron into steel. Each cokemaking process and EAF process located at a facility with an integrated iron and steel manufacturing process is part of the integrated iron and steel manufacturing facility.

See proposal preamble (77 FR 19802)
                                       Q
98.173(b)(1)(i)
(Fs) = Annual mass of the solid fuel combusted (metric tons).
(Csf) = Carbon content of the solid fuel, from the fuel analysis (percent by weight, expressed as a decimal fraction, e.g., 95% = 0.95).
(Fg) = Annual volume of the gaseous fuel combusted (scf).
(Fl) = Annual volume of the liquid fuel combusted (gallons).
(C0) = Carbon content of the greenball (taconite) pellets, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(Cp) = Carbon content of the fired pellets, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(CR) = Carbon content of the air pollution control residue, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(Fs) = Annual mass of the solid fuel used (metric tons).
(Csf) = Carbon content of the solid fuel, from the fuel analysis (expressed as a decimal fraction).
(Fg) = Annual volume of the gaseous fuel used (scf).
(Fl) = Annual volume of the liquid fuel used (gallons).
(C0) = Carbon content of the greenball (taconite) pellets, from the carbon analysis results (expressed as a decimal fraction).
(Cp) = Carbon content of the fired pellets, from the carbon analysis results (expressed as a decimal fraction).
(CR) = Carbon content of the air pollution control residue, from the carbon analysis results (expressed as a decimal fraction).

Clarifies equation terms
                                       Q
98.173(b)(1)(ii),
(CIron) = Carbon content of the molten iron, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(CScrap) = Carbon content of the ferrous scrap, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(CFlux) = Carbon content of the flux materials, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(CCarbon) = Carbon content of the carbonaceous materials, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(CSteel) = Carbon content of the steel, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(CSlag) = Carbon content of the slag, from the carbon analysis (percent by weight, expressed as a decimal fraction).
(CR) = Carbon content of the air pollution control residue, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(CIron) = Carbon content of the molten iron, from the carbon analysis results (expressed as a decimal fraction).
(CScrap) = Carbon content of the ferrous scrap, from the carbon analysis results (expressed as a decimal fraction).
(CFlux) = Carbon content of the flux materials, from the carbon analysis results (expressed as a decimal fraction).
(CCarbon) = Carbon content of the carbonaceous materials, from the carbon analysis results (expressed as a decimal fraction).
(CSteel) = Carbon content of the steel, from the carbon analysis results (expressed as a decimal fraction).
(CSlag) = Carbon content of the slag, from the carbon analysis (expressed as a decimal fraction).
(CR) = Carbon content of the air pollution control residue, from the carbon analysis results (expressed as a decimal fraction).

Clarifies equation terms
                                       Q
98.173(b)(1)(iii)
(CCoal) = Carbon content of the coal, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(CCoke) = Carbon content of the coke, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(CR) = Carbon content of the air pollution control residue, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(CCoal) = Carbon content of the coal, from the carbon analysis results (expressed as a decimal fraction).
(CCoke) = Carbon content of the coke, from the carbon analysis results (expressed as a decimal fraction).
(CR) = Carbon content of the air pollution control residue, from the carbon analysis results (expressed as a decimal fraction).

Clarifies equation terms
                                       Q
98.173(b)(1)(iv)
(Fg) = Annual volume of the gaseous fuel combusted (scf).
(CFeed) = Carbon content of the mixed sinter feed materials that form the bed entering the sintering machine, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(CSinter) = Carbon content of the sinter pellets, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(CR) = Carbon content of the air pollution control residue, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(Fg) = Annual volume of the gaseous fuel used (scf).
(CFeed) = Carbon content of the mixed sinter feed materials that form the bed entering the sintering machine, from the carbon analysis results (expressed as a decimal fraction).
(CSinter) = Carbon content of the sinter pellets, from the carbon analysis results (expressed as a decimal fraction).
(CR) = Carbon content of the air pollution control residue, from the carbon analysis results (expressed as a decimal fraction).

Clarifies equation terms
                                       Q
98.173(b)(1)(v)
(v) For EAFs, estimate CO2 emissions using Equation Q-5 of this section.

CO2=44/12*[(Iron)*(CIron)+(Scrap)*(CScrap)+(Flux)*(Cf)+(Electrode)*(CElectrode)+(Carbon)*(Cc)-(Steel)*(CSteel)-(Slag)*(CSlag)-(R)*(CR)   (Eq. Q-5)

Where:

CO2 = Annual CO2 mass emissions from the EAF (metric tons).
44/12 = Ratio of molecular weights, CO2 to carbon.
(Iron) = Annual mass of direct reduced iron (if any) charged to the furnace (metric tons).
(CIron) = Carbon content of the direct reduced iron, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(Scrap) = Annual mass of ferrous scrap charged to the furnace (metric tons).
(CScrap) = Carbon content of the ferrous scrap, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(Flux) = Annual mass of flux materials (e.g., limestone, dolomite) charged to the furnace (metric tons).
(CFlux) = Carbon content of the flux materials, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(Electrode) = Annual mass of carbon electrode consumed (metric tons).
(CElectrode) = Carbon content of the carbon electrode, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(Carbon) = Annual mass of carbonaceous materials (e.g., coal, coke) charged to the furnace (metric tons).
(CCarbon) = Carbon content of the carbonaceous materials, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(Steel) = Annual mass of molten raw steel produced by the furnace (metric tons).
(CSteel) = Carbon content of the steel, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(Slag) = Annual mass of slag produced by the furnace (metric tons).
(CSlag) = Carbon content of the slag, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(R) = Annual mass of air pollution control residue collected (metric tons).
(CR) = Carbon content of the air pollution control residue, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(v) For EAFs, estimate CO2 emissions using Equation Q-5 of this section.

CO2=44/12*[(Iron)*(CIron)+(Scrap)*(CScrap)+(Flux)*(CFlux)+(Electrode)*(CElectrode)+(Carbon)*(CCarbon)-(Steel)*(CSteel)+(Fg)*(Cgf)*MW/MVC*0.001-(Slag)*(CSlag)-(R)*(CR)]   (Eq. Q-5)

Where:

CO2 = Annual CO2 mass emissions from the EAF (metric tons).
44/12 = Ratio of molecular weights, CO2 to carbon.
(Iron) = Annual mass of direct reduced iron (if any) charged to the furnace (metric tons).
(CIron) = Carbon content of the direct reduced iron, from the carbon analysis results (expressed as a decimal fraction).
(Scrap) = Annual mass of ferrous scrap charged to the furnace (metric tons).
(CScrap) = Carbon content of the ferrous scrap, from the carbon analysis results (expressed as a decimal fraction).
(Flux) = Annual mass of flux materials (e.g., limestone, dolomite) charged to the furnace (metric tons).
(CFlux) = Carbon content of the flux materials, from the carbon analysis results (expressed as a decimal fraction).
(Electrode) = Annual mass of carbon electrode consumed (metric tons).
(CElectrode) = Carbon content of the carbon electrode, from the carbon analysis results (expressed as a decimal fraction).
(Carbon) = Annual mass of carbonaceous materials (e.g., coal, coke) charged to the furnace (metric tons).
(CCarbon) = Carbon content of the carbonaceous materials, from the carbon analysis results (expressed as a decimal fraction).
(Steel) = Annual mass of molten raw steel produced by the furnace (metric tons).
(CSteel) = Carbon content of the steel, from the carbon analysis results (expressed as a decimal fraction).
(Fg) = Annual volume of the gaseous fuel used (scf at 60 degrees F and one atmosphere).
(Cgf) = Average carbon content of the gaseous fuel, from the fuel analysis results (kg C per kg of fuel).
(MW) = Molecular weight of the gaseous fuel (kg/kg-mole).
(MVC) = Molar volume conversion factor (836.6 scf per kg-mole at standard conditions of 60 degrees F and one atmosphere).
(0.001) = Conversion factor from kg to metric tons.
(Slag) = Annual mass of slag produced by the furnace (metric tons).
(CSlag) = Carbon content of the slag, from the carbon analysis results (expressed as a decimal fraction).
(R) = Annual mass of air pollution control residue collected (metric tons).
(CR) = Carbon content of the air pollution control residue, from the carbon analysis results (expressed as a decimal fraction).

See proposal preamble (77 FR 19802)
                                       Q
98.173(b)(1)(vi)
(vi) For decarburization vessels, estimate CO2 emissions using Equation Q-6 of this section.

CO2=44/12*(Steel)*[(CSteelin)-(CSteelout)]-(R)*(CR)(Eq. Q-6)
Where:
CO2  = Annual CO2 mass emissions from the decarburization vessel (metric tons).
44/12 = Ratio of molecular weights, CO2 to carbon.
(Steel) = Annual mass of molten steel charged to the vessel (metric tons).
(CSteelin) = Carbon content of the molten steel before decarburization, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(CSteelout) = Carbon content of the molten steel after decarburization, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(R) = Annual mass of air pollution control residue collected (metric tons).
(CR) = Carbon content of the air pollution control residue, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(vi) For decarburization vessels, estimate CO2 emissions using Equation Q-6 of this section.

CO2=44/12*{(Steel)*[(CSteelin)-(CSteelout)]-(R)*(CR)}(Eq. Q-6)
Where:
CO2  = Annual CO2 mass emissions from the decarburization vessel (metric tons).
44/12 = Ratio of molecular weights, CO2 to carbon.
(Steel) = Annual mass of molten steel charged to the vessel (metric tons).
(CSteelin) = Carbon content of the molten steel before decarburization, from the carbon analysis results (expressed as a decimal fraction).
(CSteelout) = Carbon content of the molten steel after decarburization, from the carbon analysis results (expressed as a decimal fraction).
(R) = Annual mass of air pollution control residue collected (metric tons).
(CR) = Carbon content of the air pollution control residue, from the carbon analysis results (expressed as a decimal fraction).

Clarifies the order of operations in the equation.
                                       Q
98.173(b)(1)(vii)
(Fg) = Annual volume of the gaseous fuel combusted  (scf).
(COre) = Carbon content of the iron ore or iron ore pellets, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(CCarbon) = Carbon content of the carbonaceous materials, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(COther) = Average carbon content of the other materials charged to the furnace, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(CIron) = Carbon content of the iron, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(CNM) = Carbon content of the non-metallic materials, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(CR) = Carbon content of the air pollution control residue, from the carbon analysis results (percent by weight, expressed as a decimal fraction).
(Fg) = Annual volume of the gaseous fuel used (scf).
(COre) = Carbon content of the iron ore or iron ore pellets, from the carbon analysis results (expressed as a decimal fraction).
(CCarbon) = Carbon content of the carbonaceous materials, from the carbon analysis results (expressed as a decimal fraction).
(COther) = Average carbon content of the other materials charged to the furnace, from the carbon analysis results (expressed as a decimal fraction).
(CIron) = Carbon content of the iron, from the carbon analysis results (expressed as a decimal fraction).
(CNM) = Carbon content of the non-metallic materials, from the carbon analysis results (expressed as a decimal fraction).
(CR) = Carbon content of the air pollution control residue, from the carbon analysis results (expressed as a decimal fraction).

Clarifies equation terms
                                       Q
98.173(c )
(c) You must determine emissions of CO2 from the coke pushing process in mtCO2e by multiplying the metric tons of coal charged to the coke ovens during the reporting period by 0.008.
(c) You must determine emissions of CO2 from the coke pushing process in mtCO2e by multiplying the metric tons of coal charged to the by-product recovery and non-recovery coke ovens during the reporting period by 0.008.

Clarifies requirement.
                                       Q
98.173(d)
(d)If GHG emissions from a taconite indurating furnace, basic oxygen furnace, non-recovery coke oven battery, sinter process, EAF, decarburization vessel, or direct reduction furnace are vented through the same stack as any combustion unit or process equipment that reports CO2 emissions using a CEMS that complies with the Tier 4 Calculation Methodology in subpart C of this part (General Stationary Fuel Combustion Sources), then the calculation methodology in paragraph (b) of this section shall not be used to calculate process emissions. The owner or operator shall report under this subpart the combined stack emissions according to the Tier 4 Calculation Methodology in §98.33(a)(4) and all associated requirements for Tier 4 in subpart C of this part (General Stationary Fuel Combustion Sources).
(d)If GHG emissions from a taconite indurating furnace, basic oxygen furnace, non-recovery coke oven battery, sinter process, EAF, decarburization vessel, or direct reduction furnace are vented through a stack equipped with a CEMS that complies with the Tier 4 methodology in subpart C of this part, or through the same stack as any combustion unit or process equipment that reports CO2 emissions using a CEMS that complies with the Tier 4 Calculation Methodology in subpart C of this part (General Stationary Fuel Combustion Sources), then the calculation methodology in paragraph (b) of this section shall not be used to calculate process emissions. The owner or operator shall report under this subpart the combined stack emissions according to the Tier 4 Calculation Methodology in §98.33(a)(4) and comply with all associated requirements for Tier 4 in subpart C of this part (General Stationary Fuel Combustion Sources).

See proposal preamble (77 FR 19802)
                                       Q
98.174(b)(1)
(1) Except as provided in paragraph (b)(4) of this section, determine the mass of each process input and output other than fuels using the same plant instruments or procedures that are used for accounting purposes (such as weigh hoppers, belt weigh feeders, weighed purchased quantities in shipments or containers, combination of bulk density and volume measurements, etc.), record the totals for each process input and output for each calendar month, and sum the monthly mass to determine the annual mass for each process input and output. Determine the mass rate of fuels using the procedures for combustion units in §98.34.
(1) Except as provided in paragraph (b)(4) of this section, determine the mass of each process input and output other than fuels using the same plant instruments or procedures that are used for accounting purposes (such as weigh hoppers, belt weigh feeders, weighed purchased quantities in shipments or containers, combination of bulk density and volume measurements, etc.), record the totals for each process input and output for each calendar month, and sum the monthly mass to determine the annual mass for each process input and output. Determine the mass rate of fuels using the procedures for combustion units in §98.34. No determination of the mass of steel output from decarburization vessels is required.

See proposal preamble (77 FR 19802)
                                       Q
98.174(c )(2)
(2)For the furnace exhaust from basic oxygen furnaces, EAFs, decarburization vessels, and direct reduction furnaces, sample the furnace exhaust for at least three complete production cycles that start when the furnace is being charged and end after steel or iron and slag have been tapped. For EAFs that produce both carbon steel and stainless or specialty (low carbon) steel, develop an emission factor for the production of both types of steel.
(2)(i) For the exhaust from basic oxygen furnaces, EAFs, decarburization vessels, and direct reduction furnaces, sample the furnace exhaust for at least three complete production cycles that start when the furnace is being charged and end after steel or iron and slag have been tapped. For EAFs that produce both carbon steel and stainless or specialty (low carbon) steel, develop an emission factor for the production of both types of steel.
(ii) For the exhaust from continuously charged EAFs, sample the exhaust for a period spanning at least three hours. For EAFs that produce both carbon steel and stainless or specialty (low carbon) steel, develop an emission factor for the production of both types of steel.

See proposal preamble (77 FR 19802)
                                       Q
98.175(a)
(a) For each missing data for the carbon content of inputs and outputs for facilities that estimate emissions using the carbon mass balance procedure in §98.173(b)(1) or for facilities that estimate emissions using the site-specific emission factor procedure in §98.173(b)(2); 100 percent data availability is required. You must repeat the test for average carbon contents of inputs and outputs according to the procedures in §98.174(b)(2). Similarly, you must repeat the test to determine the site-specific emission factor if data on the CO2 emission rate, process production rate or process feed rate are missing.
(a) Except as provided in §98.174(b)(4), 100 percent data availability is required for the carbon content of inputs and outputs for facilities that estimate emissions using the carbon mass balance procedure in §98.173(b)(1) or facilities that estimate emissions using the site-specific emission factor procedure in §98.173(b)(2).

See proposal preamble (77 FR 19802)
                                       Q
98.176(e)
(e) If you use the carbon mass balance method in §98.173(b)(1) to determine CO2 emissions, you must report the following information for each process:
(e) If you use the carbon mass balance method in §98.173(b)(1) to determine CO2 emissions, you must, except as provided in §98.174(b)(4), report the following information for each process:

See proposal preamble (77 FR 19802)
                                       Q
98.177(b)
(b) When the carbon mass balance method is used to estimate emissions for a process, the monthly mass of each process input and output that are used to determine the annual mass.
(b) When the carbon mass balance method is used to estimate emissions for a process, the monthly mass of each process input and output that are used to determine the annual mass, except that no determination of the mass of steel output from decarburization vessels is required.

Separate measurements of the mass of liquid steel input to the decarburization vessel and decarburized liquid steel output from the decarburization vessel are not required, because these masses are very nearly equal.
                                       S
98.190 (a)
(a) Lime manufacturing plants (LMPs) engage in the manufacture of a lime product (e.g., calcium oxide, high-calcium quicklime, calcium hydroxide, hydrated lime, dolomitic quicklime, dolomitic hydrate, or other lime products) by calcination of limestone, dolomite, shells or other calcareous substances as defined in 40 CFR 63.7081(a)(1).
(a) Lime manufacturing plants (LMPs) engage in the manufacture of a lime product by calcination of limestone, dolomite, shells or other calcareous substances as defined in 40 CFR 63.7081(a)(1).

Clarifies the applicability.
                                       S
98.193(a)
(a) If all lime kilns meet the conditions specified in §98.33(b)(4)(ii) or (b)(4)(iii), you must calculate and report under this subpart the combined process and combustion CO2 emissions by operating and maintaining a CEMS to measure CO2 emissions according to the Tier 4 Calculation Methodology specified in §98.33(a)(4) and all associated requirements for Tier 4 in subpart C of this part (General Stationary Fuel Combustion Sources).
(a) If all lime kilns meet the conditions specified in §98.33(b)(4)(ii) or (b)(4)(iii), you must calculate and report under this subpart the combined process and combustion CO2 emissions from all lime kilns by operating and maintaining a CEMS to measure CO2 emissions according to the Tier 4 Calculation Methodology specified in §98.33(a)(4) and all associated requirements for Tier 4 in subpart C of this part (General Stationary Fuel Combustion Sources).

Clarifies language.
                                       S
98.193(b)(1)
(1) Calculate and report under this subpart the combined process and combustion CO2 emissions by operating and maintaining a CEMS to measure CO2 emissions from all lime kilns according to the Tier 4 Calculation Methodology specified in §98.33(a)(4) and all associated requirements for Tier 4 in subpart C of this part (General Stationary Fuel Combustion Sources).
(1) Calculate and report under this subpart the combined process and combustion CO2 emissions from all lime kilns by operating and maintaining a CEMS to measure CO2 emissions from all lime kilns according to the Tier 4 Calculation Methodology specified in §98.33(a)(4) and all associated requirements for Tier 4 in subpart C of this part (General Stationary Fuel Combustion Sources).

Clarifies language.
                                       S
98.193(b)(2)
(2) Calculate and report process and combustion CO2 emissions separately using the procedures specified in paragraphs (b)(2)(i) through (b)(2)(v) of this section.
(2) Calculate and report process and combustion CO2 emissions from all lime kilns separately using the procedures specified in paragraphs (b)(2)(i) through (b)(2)(v) of this section.

Clarifies language.
                                       S
98.193(b)(2)(ii)
(ii) You must calculate a monthly emission factor for each type of calcined byproduct/waste sold (including lime kiln dust) using Equation S - 2 of this section:
(ii) You must calculate a monthly emission factor for each type of calcined byproduct or waste sold (including lime kiln dust) using Equation S - 2 of this section:

Clarifies language.
                                       S
98.193(b)(2)(ii)
EFLKD,I,N= Emission factor for calcined lime byproduct/waste type i sold, for month n (metric tons CO2/ton lime product.
EFLKD,I,N= Emission factor for calcined lime byproduct or waste type i sold, for month n (metric tons CO2/ton lime product.

Clarifies a calculation term.
                                       S
98.193(b)(2)(ii)
CaOLKD,i,n= Calcium oxide content for calcined lime byproduct/ waste type i sold, for month n (metric tons CaO / metric ton lime).
CaOLKD,i,n= Calcium oxide content for calcined lime byproduct or waste type i sold, for month n (metric tons CaO / metric ton lime).

Clarifies a calculation term.
                                       S
98.193(b)(2)(ii)
MgOLKD,i,n= Magnesium oxide content for calcined lime byproduct/waste type i sold, for month n (metric tons MgO / metric ton lime).
MgOLKD,i,n= Magnesium oxide content for calcined lime byproduct or waste type i sold, for month n (metric tons MgO / metric ton lime).

Clarifies a calculation term.
                                       S
98.193(b)(2)(iii)
(iii) You must calculate the annual CO2 emissions from each type of calcined byproduct/waste that is not sold (including lime kiln dust and scrubber sludge) using Equation S - 3 of this section:
(iii) You must calculate the annual CO2 emissions from each type of calcined byproduct or waste that is not sold (including lime kiln dust and scrubber sludge) using Equation S - 3 of this section:

Clarifies language.
                                       S
98.193(b)(2)(iii)
Ewaste,i= Annual CO2 emissions for calcined lime byproduct/waste type i that is not sold (metric tons CO2)
Ewaste,i= Annual CO2 emissions for calcined lime byproduct or waste type i that is not sold (metric tons CO2)

Clarifies a calculation term.
                                       S
98.193(b)(2)(iii)
CaOwaste,i= Calcium oxide content for calcined lime byproduct/ waste type i that is not sold (metric tons CaO / metric ton lime).
CaOwaste,i= Calcium oxide content for calcined lime byproduct or waste type i that is not sold (metric tons CaO / metric ton lime).

Clarifies a calculation term.
                                       S
98.193(b)(2)(iii)
MgOWaste,i= Magnesium oxide content for calcined lime byproduct/ waste type i that is not sold (metric tons MgO / metric ton lime).
MgOWaste,i= Magnesium oxide content for calcined lime byproduct or waste type i that is not sold (metric tons MgO / metric ton lime).

Clarifies a calculation term.
                                       S
98.193(b)(2)(iii)
MWaste,i= Annual weight or mass of calcined byproducts/wastes for lime type i that is not sold (tons).
MWaste,i= Annual weight or mass of calcined byproducts or wastes for lime type i that is not sold (tons).

Clarifies a calculation term.
                                       S
98.193b(2)(iv)
(iv) You must calculate annual CO2 process emissions for all kilns using Equation S - 4 of this section:
(iv) You must calculate annual CO2 process emissions for all lime kilns using Equation S - 4 of this section:

Clarifies language.
                                       S
98.193b(2)(iv)
ECO2  = Annual CO2 process emissions from lime production from all kilns (metric tons/year).
ECO2  = Annual CO2 process emissions from lime production from all lime kilns (metric tons/year).

Clarifies a calculation term and corrects subscripts.
                                       S
98.193b(2)(iv)
EFLKD,i,n = Emission factor of calcined byproducts/wastes sold for lime type i in calendar month n, (metric tons CO2/ton byproduct/waste) from Equation S - 2 of this section.
EFLKD,i,n = Emission factor of calcined byproducts or wastes sold for lime type i in calendar month n, (metric tons CO2/ton byproduct or waste) from Equation S - 2 of this section.

Clarifies a calculation term.
                                       S
98.193b(2)(iv)

MLKD,i,n = Monthly weight or mass of calcined byproducts/waste sold (such as lime kiln dust, LKD) for lime type i in calendar month n (tons).

MLKD,i,n = Monthly weight or mass of calcined byproducts or waste sold (such as lime kiln dust, LKD) for lime type i in calendar month n (tons).

Clarifies a calculation term.
                                       S
98.193b(2)(iv)
Ewaste,i = Annual CO2 emissions for calcined lime byproduct/waste type i that is not sold (metric tons CO2) from Equation S - 3 of this section.
Ewaste,i = Annual CO2 emissions for calcined lime byproduct or waste type i that is not sold (metric tons CO2) from Equation S - 3 of this section.

Clarifies a calculation term.
                                       S
98.193b(2)(iv)
b = Number of calcined byproducts/wastes that are sold.
b = Number of calcined byproducts or wastes that are sold.

Clarifies a calculation term.
                                       S
98.193b(2)(iv)
z = Number of calcined byproducts/wastes that are not sold.
z = Number of calcined byproducts or wastes that are not sold.

Clarifies a calculation term.
                                       S
98.194(a)
(a) You must determine the total quantity of each type of lime product that is produced and each calcined byproduct/waste (such as lime kiln dust) that is sold. The quantities of each should be directly measured monthly with the same plant instruments used for accounting purposes, including but not limited to, calibrated weigh feeders, rail or truck scales, and barge measurements. The direct measurements of each lime product shall be reconciled annually with the difference in the beginning of and end of year inventories for these products, when measurements represent lime sold.
(a) You must determine the total quantity of each type of lime product that is produced and each calcined byproduct or waste (such as lime kiln dust) that is sold. The quantities of each should be directly measured monthly with the same plant instruments used for accounting purposes, including but not limited to, calibrated weigh feeders, rail or truck scales, and barge measurements. The direct measurements of each lime product shall be reconciled annually with the difference in the beginning of and end of year inventories for these products, when measurements represent lime sold.

Clarifies language.
                                       S
98.194(b)
(b) You must determine the annual quantity of each calcined byproduct/waste generated that is not sold by either direct measurement using the same instruments identified in paragraph (a) of this section or by using a calcined byproduct/waste generation rate.
(b) You must determine the annual quantity of each calcined byproduct or waste generated that is not sold by either direct measurement using the same instruments identified in paragraph (a) of this section or by using a calcined byproduct or waste generation rate.

Clarifies language.
                                       S
98.194(c)
(c) You must determine the chemical composition (percent total CaO and percent total MgO) of each type of lime product that is produced and each type of calcined byproduct/waste sold according to paragraph (c)(1) or (2) of this section. You must determine the chemical composition of each type of lime product that is produced and each type of calcined byproduct/waste sold on a monthly basis. You must determine the chemical composition for each type of calcined byproduct/waste that is not sold on an annual basis.
(c) You must determine the chemical composition (percent total CaO and percent total MgO) of each type of lime product that is produced and each type of calcined byproduct or waste sold according to paragraph (c)(1) or (2) of this section. You must determine the chemical composition of each type of lime product that is produced and each type of calcined byproduct or waste sold on a monthly basis. You must determine the chemical composition for each type of calcined byproduct or waste that is not sold on an annual basis.

Clarifies language.
                                       S
98.195(a)
(a) For each missing value of the quantity of lime produced (by lime type), and quantity of calcined byproduct/waste produced and sold, the substitute data value shall be the best available estimate based on all available process data or data used for accounting purposes.
(a) For each missing value of the quantity of lime produced (by lime type), and quantity of calcined byproduct or waste produced and sold, the substitute data value shall be the best available estimate based on all available process data or data used for accounting purposes.

Clarifies language.
                                       S
98.196(a)(1)
(1) Method used to determine the quantity of lime that is produced and sold.
(1) Method used to determine the quantity of lime that is produced and quantity of lime that is sold.

Clarifies language.
                                       S
98.196(a)(2)
(2) Method used to determine the quantity of calcined lime byproduct/waste sold.
(2) Method used to determine the quantity of calcined lime byproduct or waste sold.

Clarifies language.
                                       S
98.196(a)(4)
(4) Beginning and end of year inventories for calcined lime byproducts/wastes sold, by type.
(4) Beginning and end of year inventories for calcined lime byproducts or wastes sold, by type.

Clarifies language.
                                       S
98.196(a)(5)
(5) Annual amount of calcined lime byproduct/waste sold, by type (tons).
(5) Annual amount of calcined lime byproduct or waste sold, by type (tons).

Clarifies language.
                                       S
98.196(a)(7)
(7) Annual amount of calcined lime byproduct/waste that is not sold, by type (tons).
(7) Annual amount of calcined lime byproduct or waste that is not sold, by type (tons).

Clarifies language.
                                       S
98.196(b)(1)
(1) Annual CO2 process emissions from all kilns combined (metric tons).
(1) Annual CO2 process emissions from all lime kilns combined (metric tons).

Clarifies language.
                                       S
98.196(b)(2)
(2) Monthly emission factors for each lime type produced.
(2) Monthly emission factors (metric ton CO2/ton lime product) for each lime product type produced.

Clarifies language.
                                       S
98.196(b)(3)
(3) Monthly emission factors for each calcined byproduct/waste by lime type that is sold.
(3) Monthly emission factors for each calcined byproduct or waste by lime type that is sold.

Clarifies language.
                                       S
98.196(b)(4)
(4) Standard method used (ASTM or NLA testing method) to determine chemical compositions of each lime type produced and each calcined lime byproduct/waste type.
(4) Standard method used (ASTM or NLA testing method) to determine chemical compositions of each lime type produced and each calcined lime byproduct or waste type.

Clarifies language.
                                       S
98.196(b)(5)
(5) Monthly results of chemical composition analysis of each type of lime product produced and calcined byproduct/waste sold.
(5) Monthly results of chemical composition analysis of each type of lime product produced and calcined byproduct or waste sold.

Clarifies language.
                                       S
98.196(b)(6)
(6) Annual results of chemical composition analysis of each type of lime byproduct/waste that is not sold.
(6) Annual results of chemical composition analysis of each type of lime byproduct or waste that is not sold.

Clarifies language.
                                       S
98.196(b)(9)
(9) Method used to determine the quantity of calcined lime byproduct/waste sold.
(9) Method used to determine the quantity of calcined lime byproduct or waste sold.

Clarifies language.
                                       S
98.196(b)(10)
(10) Monthly amount of calcined lime byproduct/waste sold, by type (tons).
(10) Monthly amount of calcined lime byproduct or waste sold, by type (tons).

Clarifies language.
                                       S
98.196(b)(11)
(11) Annual amount of calcined lime byproduct/waste that is not sold, by type (tons).
(11) Annual amount of calcined lime byproduct or waste that is not sold, by type (tons).

Clarifies language.
                                       S
98.196(b)(14)
(14) Beginning and end of year inventories for calcined lime byproducts/wastes sold.
(14) Beginning and end of year inventories for calcined lime byproducts or wastes sold.

Clarifies language.
                                       V
98.222(a)
(a) You must report N2O process emissions from each nitric acid production train as required by this subpart.
(a) You must report N2O process emissions from each nitric acid train as required by this subpart.

Clarifies language.
                                       V
98.223(b)
(b) You must conduct an annual performance test for each nitric acid train according to paragraphs (b)(1) through (3) of this section.
(b) You must conduct an annual performance test for each nitric acid train according to paragraphs (b)(1) through (b)(3) of this section.

Clarifies language.
                                       V
98.223(b)(1)
(1) You must conduct the performance test at the absorber tail gas vent, referred to as the test point, for each nitric acid train according to §98.224(b) through (f). If multiple nitric acid production units exhaust to a common abatement technology and/or emission point, you must sample each process in the ducts before the emissions are combined, sample each process when only one process is operating, or sample the combined emissions when multiple processes are operating and base the site-specific emission factor on the combined production rate of the multiple nitric acid production units.
(1) You must conduct the performance test at the absorber tail gas vent, referred to as the test point, for each nitric acid train according to §98.224(b) through (f). If multiple nitric acid trains exhaust to a common abatement technology and/or emission point, you must sample each process in the ducts before the emissions are combined, sample each process when only one process is operating, or sample the combined emissions when multiple processes are operating and base the site-specific emission factor on the combined production rate of the multiple nitric acid trains.

Clarifies terminology of the production units
                                       V
98.223(b)(3)
(3) You must measure the production rate during the performance test and calculate the production rate for the test period in metric tons (100 percent acid basis) per hour.
(3) You must measure the production rate during the performance test and calculate the production rate for the test period in tons (100 percent acid basis) per hour.

Clarifies units of measurement.
                                       V
98.223(d)
(d) If nitric acid train "t" exhausts to any N2O abatement technology "N" after the test point, you must determine the destruction efficiency for each N2O abatement technology "N" according to paragraphs (d)(1), (d)(2), or (d)(3) of this section.
(d) If nitric acid train "t" exhausts to any N2O abatement technology "N", you must determine the destruction efficiency for each N2O abatement technology "N" according to paragraphs (d)(1), (d)(2), or (d)(3) of this section.

Clarifies requirement.
                                       V
98.223(e)
(e) If nitric acid train "t" exhausts to any N2O abatement technology "N" after the test point, you must determine the annual amount of nitric acid produced on train "t" while N2O abatement technology "N" is operating according to §98.224(f). Then you must calculate the abatement utilization factor for each N2O abatement technology "N" for each nitric acid train "t" according to Equation V - 2 of this section.
(e) If nitric acid train "t" exhausts to any N2O abatement technology "N", you must determine the annual amount of nitric acid produced on nitric acid train "t" while N2O abatement technology "N" is operating according to §98.224(f). Then you must calculate the abatement utilization factor for each N2O abatement technology "N" for each nitric acid train "t" according to Equation V - 2 of this section.

Clarifies requirement
                                       V
98.223(e)
Pa,t,N
Pt,N

Corrects equation term
                                       V
98.223(g)(1)
EN2Ot = Annual N2O mass emissions from nitric acid production unit "t" according to this Equation V - 3a (metric tons)
EN2Ot = Annual N2O mass emissions from nitric acid train "t" according to this Equation V - 3a (metric tons).

Clarifies terminology of the production units
                                       V
98.223(g)(1)
Pt = Annual nitric acid production from the train "t" (ton acid produced, 100 percent acid basis).
Pt = Annual nitric acid production from nitric acid train "t" (ton acid produced, 100 percent acid basis).

Clarifies an equation term.
                                       V
98.223(g)(1)
DF = Destruction efficiency of N2O abatement technology N that is used on nitric acid train "t" (percent of N2O removed from vent stream).
DF = Destruction efficiency of N2O abatement technology N that is used on nitric acid train "t" (decimal fraction of N2O removed from vent stream).

Corrects a calculation term.
                                       V
98.223(g)(1)
AF = Abatement utilization factor of N2O abatement technology "N" for nitric acid train "t" (percent of time that the abatement technology is operating).
AF = Abatement utilization factor of N2O abatement technology "N" for nitric acid train "t" (decimal fraction of annual production during which abatement technology is operating).

Clarifies an equation term.
                                       V
98.223(g)(2)
(2) If multiple N2O abatement technologies are located in series after your test point, you must use the emissions factor (determined in Equation V - 1 of this section), the destruction efficiency (determined in paragraph (d) of this section), the annual nitric acid production (determined in paragraph (f) of this section), and the abatement utilization factor (determined in paragraph (e) of this section), according to Equation V - 3b of this section:
(2) If multiple N2O abatement technologies are located in series after your test point, you must use the emissions factor (determined in Equation V - 1 of this section), the destruction efficiency (determined in paragraph (d) of this section), the annual nitric acid production (determined in paragraph (i) of this section), and the abatement utilization factor (determined in paragraph (e) of this section), according to Equation V - 3b of this section:

Corrects a paragraph reference
                                       V
98.223(g)(2)
EN2Ot = Annual N2O mass emissions from nitric acid production unit "t" according to this Equation V - 3b (metric tons).
EN2Ot = Annual N2O mass emissions from nitric acid train "t" according to this Equation V - 3b (metric tons).

Clarifies terminology of the production units
                                       V
98.223(g)(2)
EFN2O,t = N2O emissions factor for unit "t" (lb N2O/ton nitric acid produced).
EFN2O,t = N2O emissions factor for nitric acid train "t" (lb N2O/ton nitric acid produced).

Clarifies terminology of the production units
                                       V
98.223(g)(2)
Pt = Annual nitric acid produced from unit "t" (ton acid produced, 100 percent acid basis).
Pt = Annual nitric acid produced from nitric acid train "t" (ton acid produced, 100 percent acid basis).

Clarifies terminology of the production units
                                       V
98.223(g)(2)
DF1 = Destruction efficiency of N2O abatement technology 1 (percent of N2O removed from vent stream).
DF1 = Destruction efficiency of N2O abatement technology 1 (decimal fraction of N2O removed from vent stream).

Corrects a calculation term.
                                       V
98.223(g)(2)
AF1 = Abatement utilization factor of N2O abatement technology 1 (percent of time that abatement technology 1 is operating).
AF1 = Abatement utilization factor of N2O abatement technology 1 (decimal fraction of time that abatement technology 1 is operating).

Corrects a calculation term.
                                       V
98.223(g)(2)
DF2 = Destruction efficiency of N2O abatement technology 2 (percent of N2O removed from vent stream).
DF2 = Destruction efficiency of N2O abatement technology 2 (decimal fraction of N2O removed from vent stream).

Corrects a calculation term.
                                       V
98.223(g)(2)
AF2 = Abatement utilization factor of N2O abatement technology 2 (percent of time that abatement technology 2 is operating).
AF2 = Abatement utilization factor of N2O abatement technology 2 (decimal fraction of time that abatement technology 2 is operating).

Corrects a calculation term.
                                       V
98.223(g)(2)
DFN = Destruction efficiency of N2O abatement technology N (percent of N2O removed from vent stream).
DFN = Destruction efficiency of N2O abatement technology N (decimal fraction of N2O removed from vent stream).

Corrects a calculation term.
                                       V
98.223(g)(2)
AFN = Abatement utilization factor of N2O abatement technology N (percent of time that abatement technology N is operating).
AFN = Abatement utilization factor of N2O abatement technology N (decimal fraction of time that abatement technology N is operating).

Corrects a calculation term.
                                       V
98.223(g)(3)
(3) If multiple N2O abatement technologies are located in parallel after your test point, you must use the emissions factor (determined in Equation V - 1 of this section), the destruction efficiency (determined in paragraph (d) of this section), the annual nitric acid production (determined in paragraph (f) of this section), and the abatement utilization factor (determined in paragraph (e) of this section), according to Equation V - 3c of this section:
(3) If multiple N2O abatement technologies are located in parallel after your test point, you must use the emissions factor (determined in Equation V - 1 of this section), the destruction efficiency (determined in paragraph (d) of this section), the annual nitric acid production (determined in paragraph (i) of this section), and the abatement utilization factor (determined in paragraph (e) of this section), according to Equation V - 3c of this section:

Corrects a paragraph reference
                                       V
98.223(g)(3)
EN2Ot = Annual N2O mass emissions from nitric acid production unit "t" according to this Equation V - 3c (metric tons).
EN2Ot = Annual N2O mass emissions from nitric acid train "t" according to this Equation V - 3c (metric tons).

Clarifies terminology of the production units
                                       V
98.223(g)(3)
EFN2O,t = N2O emissions factor for unit "t" (lb N2O/ton nitric acid produced).
EFN2O,t = N2O emissions factor for nitric acid train "t" (lb N2O/ton nitric acid produced).

Clarifies terminology of the production units
                                       V
98.223(g)(3)
Pt = Annual nitric acid produced from unit "t" (ton acid produced, 100 percent acid basis).
Pt = Annual nitric acid produced from nitric acid train "t" (ton acid produced, 100 percent acid basis).

Clarifies terminology of the production units
                                       V
98.223(g)(3)
DFN = Destruction efficiency of N2O abatement technology "N" (percent of N2O removed from vent stream).
DFN = Destruction efficiency of N2O abatement technology "N" (decimal fraction of N2O removed from vent stream).

Corrects a calculation term.
                                       V
98.223(g)(3)
AFN = Abatement utilization factor of N2O abatement technology "N" (percent of time that abatement technology "N" is operating).
AFN = Abatement utilization factor of N2O abatement technology "N" (decimal fraction of time that abatement technology "N" is operating).

Corrects a calculation term.
                                       V
98.223(g)(3)
FCN = Fraction control factor of N2O abatement technology "N" (percent of total emissions from unit "t" that are sent to abatement technology "N").
FCN = Fraction control factor of N2O abatement technology "N" (decimal fraction of total emissions from nitric acid train "t" that are sent to abatement technology "N").

Corrects a calculation term.
                                       V
98.223(g)(4)
EN2Ot = Annual N2O mass emissions from nitric acid production unit "t" according to this Equation V - 3d (metric tons).
EN2Ot = Annual N2O mass emissions from nitric acid train "t" according to this Equation V - 3d (metric tons).

Corrects a calculation term.
                                       V
98.223(i)
(i) You must determine the total annual amount of nitric acid produced on nitric acid train "t" for each nitric acid train (tons acid produced, 100 percent acid basis), according to §98.224(f).
(i) You must determine the total annual amount of nitric acid produced on each nitric acid train "t" (tons acid produced, 100 percent acid basis), according to §98.224(f).

Clarifies terminology of the production units
                                       V
98.224(c)
(c) You must determine the production rate(s) (100 percent basis) from each nitric acid train during the performance test according to paragraphs (c)(1) or (c)(2) of this section.
(c) You must determine the production rate(s) (100 percent acid basis) from each nitric acid train during the performance test according to paragraphs (c)(1) or (c)(2) of this section.

Clarifies units for a calculation term.
                                       V
98.224(e)
(e) You must determine the total monthly amount of nitric acid produced. You must also determine the monthly amount of nitric acid produced while N2O abatement technology (located after the test point) is operating from each nitric acid train. These monthly amounts are determined according to the methods in paragraphs (c)(1) or (2) of this section.
(e) You must determine the total monthly amount of nitric acid produced. You must also determine the monthly amount of nitric acid produced while N2O abatement technology is operating from each nitric acid train. These monthly amounts are determined according to the methods in paragraphs (c)(1) or (2) of this section.

Clarifies requirements.
                                       V
98.224(f)
(f) You must determine the annual amount of nitric acid produced. You must also determine the annual amount of nitric acid produced while N2O abatement technology (located after the test point) is operating for each train. These annual amounts are determined by summing the respective monthly nitric acid quantities determined in paragraph (e) of this section.
(f) You must determine the annual amount of nitric acid produced. You must also determine the annual amount of nitric acid produced while N2O abatement technology is operating for each nitric acid train. These annual amounts are determined by summing the respective monthly nitric acid quantities determined in paragraph (e) of this section.

Clarifies requirements.
                                       V
98.226(a)
(a) Train identification number.
(a) Nitric Acid train identification number.

Clarifies requirements.
                                       V
98.226(o)
(None)
(o) [Reserved]

Corrects typographical error
                                       V
98.226(p)
(p) Fraction control factor for each abatement technology (percent of total emissions from the production unit that are sent to the abatement technology) if equation V - 3c is used.
(p) Fraction control factor for each abatement technology (percent of total emissions from the nitric acid train that are sent to each abatement technology) if Equation V - 3c is used.

Clarifies terminology of the production units
                                       W
98.233(a)
Convi = Conversion from standard cubic feet to metric tons CO2e; 0.000403 for CH4, and 0.00005262 for CO2.
Convi = Conversion from standard cubic feet to metric tons CO2e; 0.000479 for CH4, and 0.00005262 for CO2.

Corrects a calculation term.
                                       W
98.233(c)
Convi = Conversion from standard cubic feet to metric tons CO2e; 0.000403 for CH4, and 0.00005262 for CO2.
Convi = Conversion from standard cubic feet to metric tons CO2e; 0.000479 for CH4, and 0.00005262 for CO2.

Corrects a calculation term.
                                       W
98.233 (v)
GWP = Global warming potential, 1 for CO2, 21 for CH4, and 310 for N2O.
GWP = Global warming potential, 1 for CO2, 25 for CH4, and 298 for N2O.

Corrects a calculation term.
                                       X
98.242(b)(2)
(2) If you comply with §98.243(c), report CO2, CH4, and N2O combustion emissions under subpart C of this part (General Stationary Fuel Combustion Sources) by following the requirements of subpart C only for the combustion of supplemental fuel.  Determine the applicable Tier in subpart C of this part (General Stationary Fuel Combustion Sources) based on the maximum rated heat input capacity of the stationary combustion source.
(2) If you comply with §98.243(c), report CO2, CH4, and N2O combustion emissions under subpart C of this part (General Stationary Fuel Combustion Sources) by following the requirements of subpart C for all fuels, except emissions from burning petrochemical process off-gas in any combustion unit, including units that are not part of the petrochemical process unit, are not to be reported under subpart C of this part.  Determine the applicable Tier in subpart C of this part (General Stationary Fuel Combustion Sources) based on the maximum rated heat input capacity of the stationary combustion source.
Yes
See final preamble text for explanation
                                       X
98.243(b)
(b) Continuous emission monitoring system (CEMS). Route all process vent emissions and emissions from combustion of process off-gas to one or more stacks and determine CO2 emissions from each stack (except flare stacks) according to the Tier 4 Calculation Methodology requirements in subpart C of this part. For each stack (except flare stacks) that includes emissions from combustion of petrochemical process off-gas, calculate CH4 and N20 emissions in accordance with subpart C of this part (use the Tier 3 methodology, emission factors for "Petroleum" in Table C - 2 of subpart C of this part, and either the default high heat value for fuel gas in Table C - 1 of subpart C of this part or a calculated HHV, as allowed in Equation C - 8 of subpart C of this part). For each flare, calculate CO2, CH4, and N2O emissions using the methodology specified in §98.253(b)(1) through (b)(3).
(b) Continuous emission monitoring system (CEMS). Route all process vent emissions and emissions from stationary combustion units that burn any amount of process off-gas to one or more stacks and determine GHG emissions as specified in paragraphs (b)(1) through (b)(3) of this section.
(1) Determine CO2 emissions from each stack (except flare stacks) according to the Tier 4 Calculation Methodology requirements in subpart C of this part.
(2) For each stack (except flare stacks) that includes emissions from combustion of petrochemical process off-gas, calculate CH4 and N2O emissions in accordance with subpart C of this part (use Equation C-10 and the "fuel gas" emission factors in Table C - 2 of subpart C of this part).
(3) For each flare, calculate CO2, CH4, and N2O emissions using the methodology specified in §98.253(b)(1) through (b)(3).
Yes
See proposal preamble (77 FR 19802). Final rule corrects typo.
                                       X
98.243(c)(3)
(3) Collect a sample of each feedstock and product at least once per month and determine the carbon content of each sample according to the procedures of §98.244(b)(4). If multiple valid carbon content measurements are made during the monthly measurement period, average them arithmetically. However, if a particular liquid or solid feedstock is delivered in lots, and if multiple deliveries of the same feedstock are received from the same supply source in a given calendar month, only one representative sample is required. Alternatively, you may use the results of analyses conducted by a fuel or feedstock supplier, provided the sampling and analysis is conducted at least once per month using any of the procedures specified in §98.244(b)(4).
(3) Collect a sample of each feedstock and product at least once per month and determine the carbon content of each sample according to the procedures of §98.244(b)(4). If multiple valid carbon content measurements are made during the monthly measurement period, average them arithmetically. However, if a particular liquid or solid feedstock is delivered in lots, and if multiple deliveries of the same feedstock are received from the same supply source in a given calendar month, only one representative sample is required. Alternatively, you may use the results of analyses conducted by a feedstock supplier, or product customer, provided the sampling and analysis is conducted at least once per month using any of the procedures specified in §98.244(b)(4).

See proposal preamble (77 FR 19802)
                                       X
98.243(c)(4)
(4) If you determine that the monthly average concentration of a specific compound in a feedstock or product is greater than 99.5 percent by volume (or mass for liquids and solids), then as an alternative to the sampling and analysis specified in paragraph (c)(3) of this section, you may calculate the carbon content assuming 100 percent of that feedstock or product is the specific compound during periods of normal operation. This alternative may not be used for products during periods of operation when off-specification product is produced. You must maintain records of any determination made in accordance with this paragraph (c)(4) along with all supporting data, calculations, and other information. You must reevaluate determinations made under this paragraph (c)(4) after any process change that affects the feedstock or product composition. You must keep records of the process change and the corresponding composition determinations. If the feedstock or product composition changes so that the average monthly concentration falls below 99.5 percent, you are no longer permitted to use this alternative method.
(4) If you determine that the monthly average concentration of a specific compound in a feedstock or product is greater than 99.5 percent by volume or mass, then as an alternative to the sampling and analysis specified in paragraph (c)(3) of this section, you may determine carbon content in accordance with paragraphs (c)(4)(i) through (c)(4)(iii) of this section.
(i) Calculate the carbon content assuming 100 percent of that feedstock or product is the specific compound.
(ii) Maintain records of any determination made in accordance with this paragraph (c)(4) along with all supporting data, calculations, and other information.
(iii) Reevaluate determinations made under this paragraph (c)(4) after any process change that affects the feedstock or product composition. Keep records of the process change and the corresponding composition determinations. If the feedstock or product composition changes so that the average monthly concentration falls below 99.5 percent, you are no longer permitted to use this alternative method.
Yes
See proposal preamble (77 FR 19802). Final rule corrects typo.
                                       X
98.243(c)(5)(i)

Yes
Harmonizing change revises parameters (MWf)i to (MWf)i,n and  (MWp)i  to (MWp)i,n
                                       X
98.243(c)(5)(i)
Cg = Annual net contribution to calculated emissions from carbon (C ) in gaseous materials (kilograms/year, kg/yr).
(Fgf)i,n = Volume of gaseous feedstock i introduced in month "n" (standard cubic feet, scf ).
(MWf)i = Molecular weight of gaseous feedstock i (kg/kg-mole).
(Pgp)i,n = volume of gaseous product i produced in month "n" (scf).
(MWp)i,n = Molecular weight of gaseous product i (kg/kg-mole).
Cg = Annual net contribution to calculated emissions from carbon (C ) in gaseous materials, including streams containing CO2 recovered for sale or use in another process (kg/yr).
(Fgf)i,n = Volume or mass of gaseous feedstock i introduced in month "n" (scf or kg). If you measure mass, the term (MWf)i,n/MVC is replaced with "1".
(MWf)i,n = Molecular weight of gaseous feedstock i in month "n" (kg/kg-mole).
(Pgp)i,n = Volume or mass of gaseous product i produced in month "n" (scf or kg).  If you measure mass, the term (MWp)i,n/MVC is replaced with "1".
(MWp)i,n = Molecular weight of gaseous product i in month "n" (kg/kg-mole).

See proposal preamble (77 FR 19802)
                                       X
98.243(d)(3)(i)
(i) For all gaseous fuels that contain ethylene process off-gas, use the emission factors for "Petroleum" in Table C - 2 of subpart C of this part (General Stationary Fuel Combustion Sources).
(i) For all gaseous fuels that contain ethylene process off-gas, use the emission factors for "Fuel Gas" in Table C - 2 of subpart C of this part (General Stationary Fuel Combustion Sources).

See proposal preamble (77 FR 19802)
                                       X
98.244(b)(4)
(4) Beginning January 1, 2010, use any applicable methods specified in paragraphs (b)(4)(i) through (b)(4)(xiv) of this section to determine the carbon content or composition of feedstocks and products and the average molecular weight of gaseous feedstocks and products. Calibrate instruments in accordance with paragraphs (b)(4)(i) through (b)(4)(xvi), as applicable....Analyses conducted in accordance with methods specified in paragraphs (b)(4)(i) through (b)(4)(xv) of this section may be performed by the owner or operator, by an independent laboratory, or by the supplier of a feedstock.
(4) Beginning January 1, 2010, use any applicable methods specified in paragraphs (b)(4)(i) through (b)(4)(xv) of this section to determine the carbon content or composition of feedstocks and products and the average molecular weight of gaseous feedstocks and products. Calibrate instruments in accordance with paragraphs (b)(4)(i) through (b)(4)(xv), of this section, as applicable....Analyses conducted in accordance with methods specified in paragraphs (b)(4)(i) through (b)(4)(xv) of this section may be performed by the owner or operator, by an independent laboratory, by the supplier of a feedstock, or by a product customer.
Yes
Harmonizing change with 40 CFR 98.243(c)(3) and correction to reference.

                                       X
98.244(b)(4)(xiii)
(xiii) The results of chromatographic analysis of a feedstock or product, provided that the gas chromatograph is operated, maintained, and calibrated according to the manufacturer's instructions.
(xiii) The results of chromatographic analysis of a feedstock or product, provided that the chromatograph is operated, maintained, and calibrated according to the manufacturer's instructions.

See proposal preamble (77 FR 19802)
                                       X
98.244(b)(4)(xiv)
(xiv) The carbon content results of mass spectrometer analysis of a feedstock or product, provided that the mass spectrometer is operated, maintained, and calibrated according to the manufacturer's instructions.
(xiv) The results of mass spectrometer analysis of a feedstock or product, provided that the mass spectrometer is operated, maintained, and calibrated according to the manufacturer's instructions.

See proposal preamble (77 FR 19802)
                                       X
98.244(b)(4)(xv)(A)
(A) An industry standard practice for carbon black feedstock oils and carbon black products.
(A) An industry standard practice, or a method published by a consensus-based standards organization if such a method exists, for carbon black feedstock oils and carbon black products. Consensus-based standards organizations include, but are not limited to, the following: ASTM International (100 Barr Harbor Drive, P.O. Box CB700, West Conshohocken, Pennsylvania 19428-B2959,<PHONE_NUMBER>, http://www.astm.org), the American National Standards Institute (ANSI, 1819 L Street, NW., 6th floor, Washington, DC 20036,<PHONE_NUMBER>, http://www.ansi.org ), the American Gas Association (AGA, 400 North Capitol Street, NW., 4th Floor, Washington, DC 20001,<PHONE_NUMBER>, http://www.aga.org ), the American Society of Mechanical Engineers (ASME, Three Park Avenue, New York, NY 10016-5990,<PHONE_NUMBER>, http://www.asme.org ), the American Petroleum Institute (API, 1220 L Street, NW., Washington, DC 20005-4070,<PHONE_NUMBER>, http://www.api.org ), and the North American Energy Standards Board (NAESB, 801 Travis Street, Suite 1675, Houston, TX 77002,<PHONE_NUMBER>, http://www.naesb.org). The method(s) used shall be documented in the Monitoring Plan required under § 98.3(g)(5).

See proposal preamble (77 FR 19802)
                                       X
98.244(c)
(None)
(c) If you comply with §98.243(b) or (d), conduct monitoring and QA/QC for flares in accordance with §98.254(b) through (e) for each flare gas flow meter, gas composition meter, and/or heating value monitor that you use to comply with §98.253(b)(1) through (b)(3). You must implement all applicable QA/QC requirements specified in this paragraph (c) beginning no later than January 1, 2015.
Yes
See final preamble text for explanation
                                       X
98.245
Introductory paragraph
For missing feedstock flow rates, product flow rates, and carbon contents, use the same procedures as for missing flow rates and carbon contents for fuels as specified in §98.35.
For missing feedstock and product flow rates, use the same procedures as for missing fuel usage as specified in §98.35(b)(2).  For missing feedstock and product carbon contents and missing molecular weights for gaseous feedstocks and products, use the same procedures as for missing carbon contents and missing molecular weights for fuels as specified in §98.35(b)(1). For missing flare data, follow the procedures in §98.255(b) and (c).

See proposal preamble (77 FR 19802)
                                       X
98.246(a)(6)
(6) Name of each method listed in §98.244 used to determine a measured parameter (or description of manufacturer's recommended method).
(6)For each feedstock and product, provide the information specified in paragraphs (a)(6)(i) through (a)(6)(iii) of this section.
(i) Name of each method used to determine carbon content or molecular weight in accordance with §98.244(b)(4);
(ii) Description of each type of device (e.g., flow meter, weighing device) used to determine flow or mass in accordance with §98.244(b)(1) through (3).
(iii) Identification of each method (i.e., method number, title, or other description) used to determine flow or mass in accordance with §98.244(b)(1) through (3).
Yes
See proposal preamble (77 FR 19802). Final rule corrects typo.
                                       X
98.246(a)(8)
(8) Identification of each combustion unit that burned both process off-gas and supplemental fuel.
(8) Identification of each combustion unit that burned both process off-gas and supplemental fuel, including combustion units that are not part of the petrochemical process unit.

See proposal preamble (77 FR 19802)
                                       X
98.246(a)(9)
(9) If you comply with the alternative to sampling and analysis specified in §98.243(c)(4), the amount of time during which off-specification product was produced, the volume or mass of off-specification product produced, and if applicable, the date of any process change that reduced the composition to less than 99.5 percent.
(9) The number of days during which off-specification product was produced if the alternative to sampling and analysis specified in §98.243(c)(4) is used for a product, and, if applicable, the date of any process change that reduced the monthly average composition to less than 99.5 percent for each product or feedstock for which you comply with the alternative to sampling and analysis specified in §98.243(c)(4).
Yes
See final preamble text for explanation
                                       X
98.246(a)(11)