### MEMORANDUM

To: Docket # EPA

- HQ

- OAR

- 2011

- 0512

From: Mark d e Figueiredo, EPA/CCD

Date: November 10 , 201 4

Subject: Final Data Category Assignments and Confidentiality Determinations for
Data Elements (excluding inputs to emission equations) in the “Greenhouse Gas Reporting Rule: 2014 Revisions and Confidentiality Determinations for Petroleum
and Natural Gas Systems; Final Rule”

In the rulemaking titled “ Greenhouse Gas Reporting Rule: 2014 Revisions and Confidentiality Determinations for Petroleum and Natural Gas Systems ; Final Rule ” ( hereinafter
referred to as the Subpart W 2014 Amendments) , the EPA is amending the current 40 CFR part 98, subpart W rule. 1 

### These revisions include changes to existing reporting requirements and the
addition of several new data elements

. As part of that final action, t he EPA is finalizing confidentiality determination s for the new an d substantial ly revised data element s ( i.e., those requir ing additional or different data to be reported)

. In this memorandum, we provide a list of
all the new and substantially revised data elements ( excluding those assigned to the inputs to emission equa tions data category )

, their finalized confidentiality determination s (as applicable)

, and where appropriate, the data category assignment s

. For discussion of the changes made after proposal, see Section III of the preamble to the Subpart W 2014 Amendments.

Table 1 shows the final category assignment s for all new and substantially revised data elements assigned to data categories for which a categorical confidentiality determination was previously finalized in 2011

. 2 

### The categorical confidentiality determin ation s established in 2011 apply to the data elements listed in this table

. Table 2 shows the finalized categorical assignments and confidentiality determinations
for all new and substantially revised data elements assigned to the data categorie s “Unit/Pr ocess ‘Operating’ Characteristics That Are Not Inputs to Emission Equations” and “Unit/Process ‘Static’ Characteristics that Are Not Inputs to Emission Equations

. ” For the data elements listed in this table, the EPA is finalizing confidentiality determinations based on a case

- by

- case review
for each listed data element

. Table 3 shows the final confidentiality determinations for 5 new data elements for which no categorical assignment was made and one existing data element for
which the previous categorical assignment and confidentiality determination was changed by this
final rule

.

1 See Docket Id. No. EPA

- H Q

- OAR

- 2011

- 0512

. 2 See “ Proposed Confidentiality Determinations for Data Required Under the Mandatory Greenhouse Gas Reporting Rule and Proposed Amendment to Special Rules Governing Certain Information Obtained Under the Clean Air Act” published on July 7, 2010 ( 75 FR 39094); and “Confidentiality Determinations for Data Required under the Mandatory Greenho use Gas Reporting Rule and Amendment to Special Rules Governing Certain Information Obtained under the Clean Air Act” published on May 26, 2011 (76 FR 30782).



### 1

### As explained in Section III of preamble to the Subpart W 2014 Amendments, the EPA decided not to make confidentiality determinations for 5 data elements

. Table 4 lists the data elements for which no confidentiality determination has been made. These data elements will not be disclosed to the public until the EPA has made a case

- by

- case determination in accordance with the procedures in 40 CFR part 2, subpa rt B.

The Subpart W 2014 Amendments include new and revis ed subpart W reporting requirements assign ed to the “I nputs to E mission E quations ” data cate go ry

. For a list of the inputs to emission equations , see the memorandum titled “ Review for Potential Disclosure
Concerns for New and Revised Inputs to Emission Equations in the ‘ Greenhouse Gas Reporting
Rule: 2014 Revisions and Confidentiality Determinations for Petr oleum and Natural Gas Systems ; Final Rule ’ ” (Inputs memorandum). We determined t hat seven data elements ar e inputs only in certain situations . The data elements in §98.236(g)(5)(i), (h)(1)(iv), (h)(2)(iv), (m)(5), and (m)(6) are inputs when the applicable data are available for only one well. The data element in §98.236(i)(1)(i) is an input when only one unique physical volume is blown down for a particular equipment type. The data element in §98.236(j)(3)(ii) is an input when only one separator has a dump valve that did not close properly during the year. For situations when these

sev en data elements are not inputs, the confidentiality determinations noted in this memorandum apply.

Table 5 list s proposed data elements that were removed from Tables 1 t hrough 3 since proposal and the reasons for removal. Typically, data elements were removed because they have been determined to be inputs and moved to the Inputs memorandum. Other data elements were
removed because we decided not to finalize a confidentiality dete rmination, the data element was consolidated with another data element since proposal based on consideration of public
comments, the data element is actually a current data element, or we inadvertently listed the data
element in more than one table at prop osal

. Table 6 lists data elements that were added to Tables 1 and 2 since proposal and the rationale for their data category assignments and confidentiality determinations. Most of the new
data elements were added to Table 2 . Some were added to harmonize w ith changes in emission calculation methods that were made after consideration of public comments on the proposed amendments. Others were inadvertently overlooked in the analysis for the proposed rule. One was proposed as an input only, but it has since be en determined to be an input only when the reported data are for a single well.

Copies of the proposed and final Subpart W 2014 Amendment notice s can be found on
EPA’s website at ht tp://www.epa.gov/ghgreporting/reporters/rules/index.html

. For t he EPA’s responses to comments on the proposed confidentiality determinations, see the document titled Response to Public Comments on Greenhouse Gas Reporting Rule: 2014 Revisions and Confident iality Determinations for Petroleum and Natural Gas Systems

, available from the
Docket ID No. EPA

- HQ

- OAR

- 2011

- 0512. Copies of the proposed and final CBI rules identified
in this memorandum are available on EPA’s website: http://www.epa.gov/ghgreporting/reporters/cbi/index.html , at the following links: http://www.gpo.gov/fdsys/ pkg/FR

- 2010

- 07

- 07/pdf/2010

- 16317.pdf and http://www.gpo.gov/fdsys/pkg/FR

- 2011

- 05

- 26/pdf/2011

- 12930.pdf

.

2

### Table 1. Final Data Category Assignments and Confidentiality Determinations for New/Substantially Revised Data Elements Assigned to Categories with Categorical Determinations 3

Rule Cit ation Final Data Element Final Category Assignment Categorical
Determination (as Established in 2011)
Natural Gas Pneumatic Device Venting

§ 98.236(b) W hether the facility has any continuous high

- bleed, intermittent bleed, or
continuous low

- bleed natural gas pneumatic devices subject to reporting

. Facility and Unit Identifier
Information Emission Data

§98. 236(b)(1)(ii)(C) Whether the reporting year is first or second year of reporting

. Calculation Method ology and Methodological Tier Emission Data

Natural Gas Pneumatic Pump Venting

§98. 236(c) Whether the facility has any natural gas driven pneumatic pumps

. Facility and Unit Identifier
Information Emission Data

Acid Gas Removal

§98. 236(d) Whether the facility has any acid gas removal units vented directly to the atmosphere, to a flare or engine, or to a sulfur recovery plant

. Facility and Unit Identifier
Information Emission Data

§98. 236(d)(1)(vi) Sub

- basin ID that best represents the wells supplying gas to the unit ( for
the onshore petroleum and natural gas production segment only)

. Facility and Unit Identifier
Information Emission Data

§98. 236(d)(2)(ii)(A) If you used Calculation Method 3 as specified in §98.233(d), w hether Equation W

- 4A or W

- 4B was used. Calculation Method ology and Methodological Tier Emission Data

§98. 236(d)(2)(iii)(A) If you used Calculation Method 4 as specified in §98. 233(d), the name of the simulation software package used

. Calculation Method ology and Methodological Tier Emission Data

Dehydrators
§98. 236(e) W hether the facility has any: glycol dehydrators with an annual average daily natural gas throughput ≥ 0.4 MMscfd, glycol dehydrators that have an annual average daily natural gas throughput < 0.4 MMscfd, and
desiccant dehydrators. Facility and Unit Identifier
Information Emission Data

§98. 236(e)(1)(xviii) For each glycol dehydrator with an annual average daily throughput ≥
0.4 MMscfd

, the sub

- basin ID that best represents the wells supplying gas to the dehydrator (for the onshore petroleum and natural gas production industry segment only). Facility and Unit Identifier
Information Emission Data

3 The categorical confidentiality determinations for the data categories listed in this table were finalized on May 26, 2011 (s ee 76 FR 30782).



### 3

### Table 1. Final Data Category Assignments and Confidentiality Determinations for New/Substantially Revised Data Elements Assigned to Categories with Categorical Determinations (continued)

Rule Citation Final Data Element Final Category Assignment Categorical Determination (as Established in 2011)
Liquids Unloading

§98. 236(f) Indicate which calcula tion methods ( as specified in § 98.233(f)) were
used. Calculation Method ology and Methodological Tier Emission Data

§98. 236(f)(1)(i) For each sub

- basin and well tubing diameter and pressure group for which you used Calculation Method 1 (reported separately for wells with plunger lifts and wells without plunger lifts), the Sub

- basin ID. Facility and Unit Identifier
Information Emission Data

§98. 236(f)(1)(ii) For each sub

- basin and well tubing diameter and pressure group for which you used Calculation Method 1 (reported separately for wells with plunger lifts and wells without plunger lifts), a well tubing diameter and pressure group ID. Facility and Unit Identifier
Information Emission Data

§98. 236(f)(1)(v) For each sub

- basin and well tubing diameter and pressure group for which you used Calculation Method 1 (reported separately for wells with plunger lifts and wells without plunger lifts), the percentage of wells for which the monitoring period used to determine the cumulative venting
time was not the full calend a r year. Calculation Method ology
and M ethodological Tier Emission Data

§98. 236(f)(1)(vii i ) For each sub

- basin and well tubing diameter and pressure group for which you used Calculation Method 1 (reported separately for wells with plunger lifts and wells without plunger lifts), annual natural gas emissions (scf/yr). Emissions Emission Data

§98.236(f)(1)(xi)(A) For each sub

- basin and well tubing diameter and pressure group for which you used Calculation Method 1 (for wells without plunger lifts),
the API Well number of tested well. Facility and Unit Identifier
Information Emission Data

§98. 236(f)(1)(x ii )(A) For each sub

- basin and well tubing diameter and pressure group for which you used Calculation Method 1 (for wells with plunger lifts), the
API Well number of tested well. Facility and Unit Identifier
Information Emission Data

§98. 236(f)(2)(i) For each sub

- basin for which you used Calculation Method 2 or 3, the
Sub

- basin ID. Facility and Unit Identifier
Information Emission Data

§98. 236(f)(2)(ii) For each sub

- basin for which you used Calculation Method 2 or 3, the
calculation method. Calculation Method ology and Methodological Tier Emission Data



### 4

### Table 1. Final Data Category Assignments and Confidentiality Determinations for New/Substantially Revised Data Elements Assigned to Categories with Categorical Determinations (continued)

Rule Citation Final Data Element Final Category Assignment Categorical Determination (as Established in 2011)

§98. 236(f)(2)(vi) For each sub

- basin for which you used Calculation Method 2 or 3, total annual natural gas emissions (scf/yr) from well venti ng for liquids unloading, as calculated according to §98.233(f)(2) or §98.233(f)(3), as applicable

. Emissions Emission Data

Gas Well Completions and Workovers with Hydraulic Fracturing

§98. 236(g)(1) For each sub

- basin and well type combination with completions or workovers with hydraulic fracturing , the sub

- basin ID. Facility and Unit Identifier
Information Emission Data

§98. 236(g)(2) For each sub

- basin , the well type combination (s) for completions with hydraulic fracturing and the well type combination(s) for workovers with hydraulic fracturing

. Facility and Unit Identifier
Information Emission Data

§98. 236(g)(4) For each sub

- basin and well type combination, the c alculation meth od
used for completions with hydraulic fracturing and the calculation method used for workovers with hydraulic fracturing

. Calculation Method ology and Methodological Tier Emission Data

§98. 236(g)(7) For each sub

- basin and well type combination with completions or workovers with hydraulic fracturing

, annual gas emissions , in standard cubic feet (“E s,n ” in Equation W

- 10A or W

- 10B)

. Emissions Emission Data

Gas Well Completions and Workovers without Hydraulic Fracturing

§98. 236(h)(1)(i) For each sub

- basin with gas well completions without hydraulic fracturing and without flaring, the Sub

- basin ID. Facility and Unit Identifier
Information Emission Data

§98. 236(h)(2)(i) For each sub

- basin with gas well completions without hydraulic fracturing and with flaring, the Sub

- basin ID. Facility and Unit Identifier
Information Emission Data

§98. 236(h)(3)(i) For each sub

- basin with gas well workovers without hydraulic fracturing
and without flaring, the Sub

- basin ID. Facility and Unit Identifier
Information Emission Data

§98. 236 (h)(4)(i) For each sub

- basin with gas well workovers without hydraulic fracturing
and with flaring, the Sub

- basin ID. Facility and Unit Identifier
Information Emission Data

Blowdown Vent Stacks

§98. 236(i) You must indicate whether your facility has blowdown vent stacks

. Facility and Unit Identifier
Information Emission Data



### 5

### Table 1. Final Data Category Assignments and Confidentiality Determinations for New/Substantially Revised Data Elements Assigned to Categories with Categorical Determinations (continued)

Rule Citation Final Data Element Final Category Assignment Categorical Determination (as Established in 2011)

§98. 236(i) You must indicate whether emissions are calculated by equipment or
event type or with flow meters or both

. Calculation Method ology and Methodological Tier Emission Data

§98. 236(i)(1) If reporting by the seven categories listed in §98.233(i)(2) , the applicable equipment or event type s

. Facility and Unit Identifier
Information Emission Data

§98. 236(i) (1)(ii) If reporting by equipment or event type, annual CO 2 emissions for each equipment or event type (mt CO 2 /yr)

. Emissions Emission Data

§98. 236(i)(1)(iii) If reporting by equipment or event type, annual CH 4 emissions for each equipment or event type ( mt CH 4 /yr)

. Emissions Emission Data

§98. 236(i)(2)(i) If emissions are determined using a flow meter, annual CO 2 emissions (mt CO 2 /yr)

. Emissions Emission Data

§98. 236(i)(2)(ii) If emissions are determined using a flow meter, annual CH 4 emissions (mt CH 4 / yr)

. Emissions Emission Data

Onshore Production Storage Tanks

§98. 236(j) Indicate w hether the facility send s produced oil to atmospheric tanks. Facility and Unit Identifier
Information Emission Data

§98. 236(j)(1)(i) For each sub

- basin where C alculation M ethod 1 or 2 is used, the Sub

basin ID. Facility and Unit Identifier
Information Emission Data

§98. 236(j)(1)(ii) Calculation method used, and name of the software package used if using Calculation Method 1. Calculation Method ology
and Methodol ogical Tier Emission Data

§98. 236(j)(2)(ii)(A) For each sub

- basin with atmospheric tanks using Calculation Method 3 that did not control emissions with flares, the Sub

- basin ID. Facility and Unit Identifier
Information Emission Data

§98. 236(j)(2)(iii)(A) F or each sub

- basin with atmospheric tanks using Calculation Method 3
that control ed emissions with flares, the Sub

- basin ID. Facility and Unit Identifier
Information Emission Data

Transmission Storage Tanks

§98. 236(k) Whether your facility contains any transmission storage tanks

. Facility and Unit Identifier
Information Emission Data

§98. 236(k)(1)(ii) For each transmission storage tank vent stack, the method used to determine if dump valve leakage is occurring. Test and Calibration
Methods Not CBI



### 6

### Table 1. Final Data Category Assignments and Confidentiality Determinations for New/Substantially Revised Data Elements Assigned to Categories with Categorical Determinations (continued)

Rule Citation Final Data Element Final Category Assignment Categorical Determination (as Established in 2011)

§98. 236(k)(2)(i) For each transmission storage tank vent stack where leakage is occurring and the vent stack is vented directly to the atmosphere, the method used to measure the leakage rate. Test and Calibration
Methods Not CBI

§98.236(k)(2)(ii) If emissions from scrubber dump valve leakage were vented direct to atmosphere, measured leak rate (average leak rate for a continuous flow measurement device) in standard cubic feet per hour. Emissions Emission Data

§98.236(k)(3)(ii) If emissions from scrub ber dump valve leakage were controlled using a flare, measured leak rate (average leak rate for a continuous flow measurement device) in standard cubic feet per hour. Emissions Emission Data

§98. 236(k)(3)(i) For each transmission storage tank vent stack w here leakage is occurring and the vent stack vents to a flare, the method used to measure the leakage rate. Test and Calibration
Methods Not CBI

Well Testing

§98. 236(l) Whether you performed gas well or oil well testing that resulted in
vented or flared emissions during the reporting year. Facility and Unit Identifier
Information Emission Data

Associated Natural Gas

§98. 236(m)(1) For each Sub

- basin in which associated gas was vented or flared , the
Sub

- basin ID. Facility and Unit Identifier
Information Emission Data

Flare Stacks

§98. 236(n) You must indicate if your facility contains any flare stacks

. Facility and Unit Identifier
Information Emission Data

Centrifugal Compressors

§98. 236(o) You must indicate whether your facility has centrifugal compressors. Facility and Unit Identifier
Information Emission Data

§98. 236(o)(1)(i) For each centrifugal compressor at your facility , a unique name or ID for
the compressor. Facility and Unit Identifier
Information Emission Data

§98. 236(o)(1)(iv) Indicate whether the compressor was measured in operating

- mode

. Test and Calibration
Methods Not CBI



### 7

### Table 1. Final Data Category Assignments and Confidentiality Determinations for New/Substantially Revised Data Elements Assigned to Categories with Categorical Determinations (continued)

Rule Citation Final Data Element Final Category Assignment Categorical Determination (as Established in 2011)

§98. 236(o)(1)(v) Indicate whether the compressor was measured in not

- operating

depressurized

- mode

. Test and Calibration
Methods Not CBI

§98.236(o)(2)(i)(A) For each compressor source at each centrifugal compressor, the compressor name or ID. Facility and Unit Identifier
Information Emission Data

§98.236(o)(2)(i)(B) For each compressor source at each centrifugal compressor, the

compressor source (wet seal, isolation valve, or blowdown valve). Facility and Unit Identifier
Information Emission Data

§98.236(o)(2)(i)(C) For each compressor source at each centrifugal compressor, the u nique
name or ID for the leak or vent. If the leak or vent is connected to a manifolded group of compressor sources, use the same leak or vent ID for each compressor source in the manifolded group. If multiple compressor sources are released through a single vent for which
continuous measureme nts are used, use the same leak or vent ID for each compressor source released via the measured vent. For a single compressor using as found measurements, you must provide a different leak or vent ID for each compressor source. Facility and Unit Identifier
Information Emission Data

§98. 236 (o)(2)( ii ) (A) For each leak or vent, i ndicate whether the leak or vent is for a single

compressor source or manifolded group of compressor sources and
whether the emissions from the leak or vent are released to the atmosphere, routed to a flare, combustion (fuel or thermal oxidizer), or
vapor recovery. Calculation Method ology and Methodological Tier Emission Data

§98. 236 (o)(2)( ii ) (B) For each leak or vent, i ndicate whether an as found measurement (s) as identified in § 98.233(o)(2) or (o)(4) was conducted on the leak or vent. Test and Calibration
Methods Not CBI

§98. 236 (o)(2)( ii ) (C) For each leak or vent, i ndicate whether continuous measurement s as identified in § 98.233(o)(3) or (o)(5) were conducted on the leak or vent. Test and Calibration
Methods Not CBI

§98. 236(o)(3)(i) (A) If the measurement methods specified in paragraphs §98.233(o)(2) or (o)(4) are conducted, then for each as found measurement performed on
a leak or vent, report the name or ID of the leak or vent. Facility and Unit Identifier
Information Emission Data

§98. 236(o)(3)(i) (B) If the measurement methods specified in paragraphs §98.233(o)(2) or (o)(4) are conducted, then for each as found measurement performed on
a leak or vent, report the measurement date. Test and Calibration
Methods Not CBI



### 8

### Table 1. Final Data Category Assignments and Confidentiality Determinations for New/Substantially Revised Data Elements Assigned to Categories with Categorical Determinations (continued)

Rule Citation Final Data Element Final Category Assignment Categorical Determination (as Established in 2011)

§98. 236(o)(3)(i) (C) If the measurement methods specified in paragraphs §98.233(o)(2) or (o)(4) are conducted, then for each as found measurement performed on

a leak or vent, report th e measurement method. Test and Calibration
Methods Not CBI

§98. 236(o)(3)(i)(E) If the measurement methods specified in paragraphs §98.233(o)(2) or (o)(4) are conducted, then for each as found measurement performed on

a leak or vent, and for each compressor attached to the leak or vent, report the compressor mode during which the measurement was taken. Test and Calibration
Methods Not CBI

§98. 236(o)(3)(ii)(A) For each compressor mode

- source combination where a reporter
emission factor as calculated in E quation W

- 23 was used to calculate emissions in Equation W

- 22 , report the compressor mode

- source combination. Facility and Unit Identifier
Information Emission D ata

§98. 236(o)(3)(ii)(D) Indicate whether the compressor mode

- source combination reporter emission factor is facility

- specific or based on all of the reporter’s applicable facilities

. Calculation Method ology and Methodological Tier Emission Data

§98. 236(o)(4)(i) Continuous measurement data. If the measurement me thods specified in paragraphs § 98.233(o)(3) or (o)(5) are conducted , report the name or ID
of the leak or vent. Facility and Unit Identifier
Information Emission Data

Reciprocating Compressors

§98. 236(p) You must indicate whether your facility has reciprocating compressors. Facility and Unit Identifier
Information Emission Data

§98. 236(p)(1)(i) For each reciprocating compressor at your facility

, unique name or ID
for the compressor

. Facility and Unit Identifier
Information Emission Data

§98. 236(p)(1)(v) Indicate whether the compressor was measured in operating

- mode

. Test and Calibration
Methods Not CBI

§98. 236(p)(1)(vi) Indicate whether the compressor was measured in standby

- pressurized

mode

. Test and Calibration
Methods Not CBI

§98. 236(p)(1)(vii) Indicate whether the compressor was measured in not

- operating

depressurized

- mode

. Test and Calibration
Methods Not CBI



### 9

### Table 1. Final Data Category Assignments and Confidentiality Determinations for New/Substantially Revised Data Elements Assigned to Categories with Categorical Determinations (continued)

Rule Citation Final Data Element Final Category Assignment Categorical Determination (as Established in 2011)

§98. 236(p)(2)(i) (A) For each compressor source at ea ch reciprocating compressor, the compressor name or ID. Facility and Unit Identifier
Information Emission Data

§98. 236(p)(2)(i )(B) For each compressor source at each reciprocating compressor, the

compressor source ( isolation valve, blowdown valve, or rod packing ). Facility and Unit Identifier
Information Emission Data

§98. 236(p)(2)(i )(C) For each compressor source at each reciprocating compressor, the u nique
name or ID for the leak or vent. If the leak or vent is connected to a manifolded group of compre ssor sources, use the same leak or vent ID for each compressor source in the manifolded group. If multiple compressor sources are released through a single vent for which continuous measurements are used, use the same leak or vent ID for each

compressor so urce released via the measured vent. For a single compressor using as found measurements, you must provide a different leak or vent ID for each compressor source. Facility and Unit Identifier
Information Emission Data

§98. 236(p)(2)(i i) (A) For each leak or vent, i ndicate whether the leak or vent is for a single

compressor source or manifolded group of compressor sources and
whether the emissions from the leak or vent are released to the atmosphere, routed to a flare, combustion (fuel or thermal oxidizer), or

vapor recovery. Calculation Method ology and Methodological Tier Emission Data

§98. 236(p)(2)( ii)(B) For each leak or vent, i ndicate whether an as found measurement (s) as identified i n § 98.233(p)(2) or (p)(4) was conducted on the leak or vent. Test and Calibration
Methods Not CBI

98.236(p)(2)( ii)(C) For each leak or vent, i ndicate whether continuous measurement s as identified in § 98.233(p)(3) or (p)(5) were conducted on the leak or ve nt. Test and Calibration
Methods Not CBI

§98. 236(p)(3)(i)(A) If the measurement methods specified in paragraphs §98.233(p)(2) or (p)(4) are conducted, then for each as found measurement performed on

a leak or vent, report the name or ID of the leak or vent. Facility and Unit Identifier
Information Emission Data

§98. 236(p)(3)(i)(B) If the measurement methods specified in paragraphs §98.233(p)(2) or (p)(4) are conducted, then f or each as found measurement performed on

a leak or vent, report the measureme nt date. Test and Calibration
Methods Not CBI



### 10

### Table 1. Final Data Category Assignments and Confidentiality Determinations for New/Substantially Revised Data Elements Assigned to Categories with Categorical Determinations (continued)

Rule Citation Final Data Element Final Category Assignment Categorical Determination (as Established in 2011)

§98. 236(p)(3)(i)(C) If the measurement methods specified in paragraphs §98.233(p)(2) or (p)(4) are conducted, then f or each as found measurement performed on

a leak or vent, report the measurement method. Test and Calibration
Methods Not CBI

§98. 236(p)(3)(i)(E) If the measurement methods specified in paragraphs §98.233(p)(2) or (p)(4) are conducted, then f or each as found measurement performed on

a leak or vent, and for each compressor attached to the leak or vent, report the compressor mode during which the measurement was taken. Test and Calibration
Methods Not CBI

§98. 236(p)(3)(ii)(A) For each compressor mode

- source combination where a reporter
emission factor as calculated in E quation W

- 28 was used to calculate emissions in Equation W

- 27, report the compressor mode

- source combination. Facility and Unit Identifier
Information Emission Data

§98. 236(p)(3)(ii)(D) Indicate whether the compressor mode

- source combination reporter emission factor is facility

- s pecific or based on all of the reporter’s applicable facilities. Calculation Method ology and Methodological Tier Emission Data

§98. 236(p)(4)(i) Continuous measurement data. If the measurement methods specified in paragraphs §98.233(p)(3) or (p)(5) are co nducted , report the name or ID
of leak or vent. Facility and Unit Identifier
Information Emission Data

Equipment Leaks Surveys

§98. 236(q)(1) (i) You must report the number of complete leak surveys performed during the calendar year. Test and Calibration
Methods Not CBI

§98. 236(q)(1) (ii) For natural gas distribution facilities performing a multiple year leak survey cycle, the number of years in the leak survey cycle. Test and Calibration
Methods Not CBI

§98. 236(q)(2)(i) For all facilities that perform equipment leak surveys, each c omponent type. Facility and Unit Identifier
Information Emission Data

Equipment Leaks by Population Count

§98. 236(r)(1) You must indicate whether your facility contains any of the emi ssion source types required to use Equation W

- 32A , for the applicable industry segment. Facility and Unit Identifier
Information Emission Data



### 11

### Table 1. Final Data Category Assignments and Confidentiality Determinations for New/Substantially Revised Data Elements Assigned to Categories with Categorical Determinations (continued)

Rule Citation Final Data Element Final Category Assignment Categorical Determination (as Established in 2011)

§98. 236(r)(1)(i) Emission s ource type. Facility and Unit Identifier
Information Emission Data

§98.236(r)(2) (v)(A) For facilities with above grade transmission

- distribution transfer stations and above grade metering

- regulating stations that are not above grade
transmission

- distribution transfer stations, annual CO2 emissions from the above grade metering

- regulating stations that are not above grade
transmission

- distribution transfer stations. Emissions Emission Data

§98.236(r)(2)(v)(B) For facilities with above grade transmission

- distribution transfer stations and above grade metering

- regulating stations that are not above grade
transmission

- distribution transfer stations, annual CH4 emissions from the above grade metering

- regulating stations that are not above grade
transmission

- distribution transfer stations. Emissions Emission Data

§98. 236(r)(3)(i) For onshore petroleum and na tural gas production facilities, the

c alculation method used. Calculation Method ology and Methodological Tier Emission Data

§98. 236(r)(3)(ii)(A) For onshore petroleum and natural gas production facilities, indication of whether the facility contains the m ajor equipment type. Facility and Unit Identifier
Information Emission Data

EOR Injection Pump s
§98. 236(w)(1) For each EOR injection pump system with blowdown

, the Sub

- basin ID

. Facility and Unit Identifier
Information Emission Data

§98. 236(w)(2) For each EOR injection pump system with blowdown

, an identifier

. Facility and Unit Identifier
Information Emission Data

EOR Hydrocarbon Liquid s
§98. 236(x)(1) For each sub

- basin with EOR operations from which hydrocarbon liquids were produced , the Sub

- basin ID. Facility and Unit Identifier
Information Emission Data

Combustion Equipment for Onshore Petroleum and Natural Gas Production and Natural Gas Distribution Facilities

§98. 236(z) Indicate whether your facility has any combustion units subject to reporting. Facility and Unit Identifier
Information Emission Data



### 12

### Table 1. Final Data Category Assignments and Confidentiality Determinations for New/Substantially Revised Data Elements Assigned to Categories with Categorical Determinations (continued)

Rule Citation Final Data Element Final Category Assignment Categorical Determination (as Established in 2011)

§98. 236(z)(1) Indicate whether the combustion units subject to re porting under §98.232
include external fuel combustion units with a rated heat less than or equal to 5 MMBtu /hr, or internal fuel combustion units, excluding

compressor

- drivers, with a rated heat capacity less than or equal to 1
MMBtu /hr (or the equivalent of 130 horsepower). Facility and Unit Identifier
Information Emission Data

§98. 236(z)(1)(i) The type of combustion unit. Facility and Unit Identifier
Information Emission Data

§98. 236(z)(2) Indicate whether the combustion uni ts subject to reporting under §98. 232
include external fuel combustion units with a rated heat greater th an 5
MMBtu /hr, internal fuel combustion units, excluding compressor

drivers, with a rated heat capacity greater than 1 MMBtu /hr (or the equivalent of 130 horsepower), or compressor

- drivers. Facility and Unit Identifier
Information Emission Data

§98. 236(z) (2)(i) The type of combustion unit. Facility and Unit Identifier
Information Emission Data

Onshore Petroleum and Natural Gas Production

§98. 236(aa)(1)(ii)(A) For each unique sub

- basin category, the state. Facility and Unit Identifier
Information Emission Data

§98. 236(aa)(1)(ii)(B) For each unique sub

- basin category, the county. Facility and Unit Identifier
Information Emission Data

Onshore Natural Gas Processing

§98.236(aa)(3)( i ) The quantity of natural gas received at the gas processing plant in the calendar year, in thousand standard cubic feet. Raw Materials Consumed that are Not Inputs to
Emi ssion E quations CBI

§98.236(aa)(3)(ii) The quantity of processed (residue) gas leaving the gas processing plant,
in thousand standard cubic feet. Production/Throughput Data that are Not Inputs to Emission Equations CBI

Missing Data Provisions

§98.236(bb)(1) For quarterly measurements, report the total number of quarters that a missing data procedure was used. Missing Data Provisions Emission Data



### 13

### Table 2. Final Data Category Assignments and Confidentiality Determinations for New/Substantially Revised Data Elements Assigned to the Unit/Process Operating Characteristics and the Unit/Process Static Characteristics Data Categories

Rule Cit ation Final Data Element Category Assignment Final
Determination

Acid Gas Removal

§98. 236(d)(1)(iv) Whether any CO 2 emissions from the acid gas removal unit are recovered and transferred outside the facility Unit/Process Operating Characteristics
that are Not Inputs to Emission Equations Not CBI

Dehydrators

§98. 236(e)(1)(xvii) For each glycol dehydrator that has an annual average daily natural gas throughput greater than or equal to 0.4 MMscfd

, whether any dehydrator emissions are vented to the atmosphere without being routed to a flare or regenerator firebox /fire tubes

. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(e)(2)(ii) For glycol dehydrators with an annual average daily natural gas throughput less than 0.4 MMscfd, the total number of dehydrators venting to a vapor recovery device. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§ 98. 236(e)(2)(iii) For glycol dehydrators with an annual average daily natural gas throughput less than 0.4 MMscfd, type of control device (s) other than a vapor recovery device or a flare or regenerator
firebox/fire tubes , and the total number of dehydrator s vented to each type of control device

. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(e)(2)(iv) For glycol dehydrators with an annual average daily natural gas throughput less than 0.4 MMscfd, whether any dehydrator emissions are vented to a flare or regenerator firebox/fire tubes. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(e)(2)(iv)(A) For glycol dehydrators with an annual average daily natural gas throughput less than 0.4 MMscfd and vent to a flare or regenerator firebox, the total number of dehydrators

. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(e)(3)(i) For dehydrators that use desiccant, whe ther any dehydrator
emissions were vented to a vapor recovery device. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(e)(3)(i) For dehydrators that use desiccant, the total number of dehydrators vent ed to a vapor recovery device. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(e)(3)(i) For dehydrators that use desiccant, whether any dehydrator
emissions were vented to a control device other than a vapor recovery device or a flare or regenerator firebox/fire tubes. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI



### 14

### Table 2. Final Data Category Assignments and Confidentiality Determinations for New/Substantially Revised Data Elements Assigned to the Unit/Process Operating Characteristics and the Unit/Process Static Characteristics Data Categories (continued)

Rule Citation Final Data Element Category Assignment Final
Determination

§98. 236(e)(3)(i) For dehydrators that use desiccant and vent ed to a control device other than a vapor recovery device or a flare or regenerator
firebox/fire tubes , the control device type

. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(e)(3)(i) For dehydrators that use desiccant, the number of dehydrators

vent ed to a control device other than a vapor recovery device or a flare or regenerator firebox/fire tubes. Unit/Process Operating Characteristics that are Not Inputs to Emission Eq uations Not CBI

§98. 236(e)(3)(i) For dehydrators that use desiccant, whether any dehydrator
emissions were vented to a flare or regenerator firebox/fire tubes. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(e)(3)(i) For dehydrators that use desiccant and vent ed to a flare or regenerator firebox, the total number of dehydrators. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

Liquids Unloading

§98. 236(f) You must indicate whether well venting for liquids unloading

occurs at the facility

. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(f)(1)(iv) For each Sub

- basin and well tubing diameter and pressure group for which you used Calculation Method 1 (reported separately for wells with plunger lifts and wells without plunger lifts), the count of wells vented to the atmosphere for this group. Unit/Process Operating Characteristics that are Not Inputs to Emission
E quations Not CBI

Gas Well Completions and Workovers with Hydraulic Fracturing

§98. 236(g) Whether the facility had any gas well completions or workovers with hydraulic fracturing in the calendar year

. Unit/Process Operating Characteristics
that are Not Inputs to Emission Equations Not CBI



### 15

### Table 2. Final Data Category Assignments and Confidentiality Determinations for New/Substantially Revised Data Elements Assigned to the Unit/Process Operating Characteristics and the Unit/Process Static Characteristics Data Categories (continued)

Rule Citation Final Data Element Category Assignment Final
Determination
§98.236(g)(5)(i) 4 If you used Equation W

- 10A to calculate annual volumetric total gas emissions, then you must report the cumulative gas flowback time, in hours, for each sub

- basin, from when gas is first detected until sufficient quantities are present to enable separation, and the cumulative flowback time, in hours, for each sub

- basin, after sufficient quantities of gas are present to enable sepa ration (sum
of “T p,i ” and “T p,s ” values used in Equation W

- 10A). Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

Gas Well Completions and Workovers without Hydraulic Fracturing

§98. 236(h) I ndicate whether the facility had any gas well completions without hydraulic fracturing or any gas well workovers without hydraulic fracturing, and if the activities occurred with or without flaring. Unit/Process Operating Characteristics that are Not Input s to Emission Equations Not CBI

§98. 236(h)(1)(ii) For each sub

- basin with gas well completions without hydraulic fracturing and without flaring, the number of completions that vented gas to the atmosphere. Unit/Process Operating Characteristics
that are Not Inputs to Emission Equations Not CBI

§98. 236(h)(1)(iv) 5 Average daily gas production rate for all completions without hydraulic fracturing in the sub

- basin without flaring, in standard cubic feet per hour (average of all “V p ” as used in Equation W

13B ). Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(h)(2)(ii) For each sub

- basin with gas well completions without hydraulic fracturing and with flaring, the number of well completions that flared gas. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

4 Reporters may delay reporting of th ese data element s for a period of two years in cases where wildcat wells and /or delineation wells are the only wells in a sub

basin for which data was collected. Note that the determination applies only in situations where data are available for multiple wells. The data element is an in put when data are available for only a single well; see the Inputs memorandum for an evaluation of whether release of inputs data is likely to result in substantial competitive harm.

5 Reporters may delay reporting of this data element for a period of two years in cases where wildcat wells and/or delineation wells are the only wells in a sub

basin for which data was collected. Note that the determination applies only in situations where data are available for multiple wells. The data element is an input when data are available for only a single well; see the Inputs memorandum for an evaluation of whether release of inputs data is likely to result in substantial competitive harm.



### 16

### Table 2. Final Data Category Assignments and Confidentiality Determinations for New/Substantially Revised Data Elements Assigned to the Unit/Process Operating Characteristics and the Unit/Process Static Characteristics Data Categories (continued)

Rule Citation Final Data Element Category Assignment Final
Determination

§98. 236(h)(2)(iii) Total number of hours that gas vented to a flare during venting for all completions in the sub

- basin category (sum of all “T p ” for completions that vented to a flare as used in Equation W

- 13B). Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(h)(2)(iv) 6 Average daily gas production rate for all completions without hydraulic fracturing in the sub

- basin with flaring, in standard cubic feet per hour (average of all “V p ” from Equation W

- 13B). Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

Blowdown Vent Stacks

§98. 236(i)(1)(i) 7 Total number of blowdowns in the calendar year for the equipment or event type (sum equation variable “N” from Equation W

- 14A or Equation W

- 14B of this subpart

, for all unique physical volumes for the equipment or event type). Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

Onshore Production Storage Tanks

§98. 236(j) If you used Calculation Method 1 or 2 and any of the atmospheric tanks are observed to have malfunctioning dump valves, indicate that dump valves were malfunctioning. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98.236(j)(2)(ii)(B) For each sub

- basin with atmospheric tanks whose emissions were calculated using Calculation Method 3, the number of atmospheric tanks that did not control emissions with flares. Unit/Process Static Characteristics that are Not Inputs to Emission Equations Not CBI

§98.236(j)(2)(iii)(B) For each sub

- basin with atmospheric tanks whose emissions were calculated using Calculation Method 3, the number of atmospheric tanks that controlled emissions with flares. Unit/Process Static Characteristics that are Not Inp uts to Emission Equations Not CBI

6 Report ers may delay reporting of this data element for a period of two years in cases where wildcat wells and/or delineation wells are the only wells in a sub

basin for which data was collected. Note that the determination applies only in situations where data a re available for multiple wells. The data element is an input when data are available for only a single well; see the Inputs memorandum for an evaluation of whether release of inputs data is likely to result in substantial competitive harm.

7 Note that the determination applies only in situations where data are available for multiple unique physical volumes for a particular equip ment type. The data element is an input when data are available for only a single unique physical volume for a particular equipmen t type; see the Inputs memorandum for an evaluation of whether release of inputs data is likely to result in substantial competitive harm.



### 17

### Table 2. Final Data Category Assignments and Confidentiality Determinations for New/Substantially Revised Data Elements Assigned to the Unit/Process Operating Characteristics and the Unit/Process Static Characteristics Data Categories (continued)

Rule Citation Final Data Element Category Assignment Final
Determination

§98. 236(j)(3)(ii) 8 If any of the gas

- liquid separator liquid dump valves did not close properly during the reporting year, the total time, in hours, the dump valves on gas

- liquid separators did not close properly ( Sum
of the “T n ” values used in E quation W

- 16)

. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

Transmission Storage Tanks

§98. 236(k)(1)(iii) For each transmission storage tank vent stack, indicate whether scrubber dump valve leakage occurred for the transmission storage vent. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(k)(1)(iv) For each transmission storage tank vent stack, indicate if there is a
flare attached to the vent stack. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98.236(k)(2)(iii) For scrubber dump valve leakage vented directly to t he atmosphere, duration of time that the leak is counted as having occurred, in hours. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98.236(k)(3)(iii) For scrubber dump valve leakage vented to a flare, duration of time that flaring occurred, in hours. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

Associated Natural Gas

§98. 236(m) You must indicate whether any associated gas was vented or flared during the calendar year. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(m)(2) For each sub

- basin, indicate whether any associated gas was vented without flaring. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

8 Note that the determination applies only in situations where data are available for multiple separators with dump v alves that did not close properly. The data element is an input when data are available for only a single separator with a dump valve that did not close properly; see th e Inputs memorandum for an evaluation of whether release of inputs data is likely to re sult in substantial competitive harm.



### 18

### Table 2. Final Data Category Assignments and Confidentiality Determinations for New/Substantially Revised Data Elements Assigned to the Unit/Process Operating Characteristics and the Unit/Process Static Characteristics Data Categories (continued)

Rule Citation Final Data Element Category Assignment Final
Determination

§98. 236(m)(3) For each sub

- basin, indicate whether any associated gas was
flared. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(m)(5) 9 For each sub

- basin, the volume of oil produced during time periods in which associated gas was vented or flared (barrels). Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(m)(6) 10 7 For each sub

- basin, the total volume of associated gas sent to sales during time periods in which associated gas was vented or flared (scf). Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

Centrifugal Compressors

§98. 236(o)(1)(iv) Indicate whether the compressor was measured in operating

mode. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98.236(o)(1)(v) Indicate whether the compressor was measured in not

- operating

depressurized

– mode. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(o)(1)(vii) Indicate which, if any , compressor sources are routed to a flare. Unit/Process Static Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(o)(1)(viii) Indicate which, if any , compressor sources have vapor recovery. Unit/Process Static Characteristics that are Not Inputs to Emission Equations Not CBI

9 Reporters may delay reporting of this data element for a period of two years in cases where wildcat wells and/or delineation wells are the only wells in a sub

basin for which data was collected. Note that the determi nation applies only in situations where data are available for multiple wells. The data element is an input when data are available for only a single well; see the Inputs memorandum for an evaluation of whether release of inputs data is likely to result in substantial competitive harm.

10 Reporters may delay reporting of this data element for a period of two years in cases where wildcat wells and/or delineation wells are the only wells in a sub

basin for which data was collected. Note that the determination applies only in situations where data are available for multiple wells; the data element is an input when data are available for only a single well; see the Inputs memorandum for an evaluation of whether release of inputs data is likely to result in substa ntial competitive harm

.



### 19

### Table 2. Final Data Category Assignments and Confidentiality Determinations for New/Substantially Revised Data Elements Assigned to the Unit/Process Operating Characteristics and the Unit/Process Static Characteristics Data Categories (continued)

Rule Citation Final Data Element Category Assignment Final
Determination

§98. 236(o)(1)(ix) Indicate which, if any, compressor source emissions are captured
for fuel use or are routed to a thermal oxidizer. Unit/Process Static Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(o)(1)(x) Indicate whether the compressor has blind flanges installed and
associated dates. Unit/Proces s Static Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(o)(1)(xi) Indicate whether the compressor has wet or dry seals. Unit/Process Static Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(o)(1)(xiii) Power output of compressor driver (hp). Unit/Process Static Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(o)(1)(xiv) Indicate whether the compressor had a scheduled depressurized shutdown during the reporting year

. Unit/Process Static Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(o)(2)(ii) (E) If the leak or vent is routed to flare, combustion, or vapor recovery, report the percentage of time that the respective device was operational when the compres sor source emissions were
routed to the device

. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98.236(o)(3)(i)(F) If the measurement is for a manifolded group of compressor sources, indicate whether the measurement location is prior to or after comingling with non

- compressor emission sources. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98.236(o)(4)(iii) Indicate whether the measured volume of flow during the reporting year includes compressor blowdown emissions as allowed for in §98.233(o)(3)(ii) and (o)(5)(ii). Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(o)(4)(iv) If the measurement method is for a manifolded group of compressor sources, indicate whether the measurement location is prior to or after comingling with non

- compressor emission

sources. Unit/Process Operating Characteristics that are Not Inp uts to Emission Equations Not CBI

Reciprocating Compressors

§98. 236(p)(1)(viii) Indicate which, if any , compressor sources are part of a manifolded group of compressor sources. Unit/Process Static Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(p)(1)(ix) Indicate which, if any , compressor sources are routed to a flare. Unit/Process Static Characteristics that are Not Inputs to Emission Equations Not CBI



### 20

### Table 2. Final Data Category Assignments and Confidentiality Determinations for New/Substantially Revised Data Elements Assigned to the Unit/Process Operating Characteristics and the Unit/Process Static Characteristics Data Categories (continued)

Rule Citation Final Data Element Category Assignment Final
Determination

§98. 236(p)(1)(x) Indicate which, if any , compressor sources have vapor recovery. Unit/Process Static Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(p)(1)(xi) Indicate which, if any, compressor source emissions are captured
for fuel use or are routed to a thermal oxidizer. Unit/Process Static Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(p)(1)(xii) Indicate whether the compressor has blind flanges installed and
associated dates. Unit/Process Static Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(p)(1)(xiii) Power output of compressor driver (hp). Unit/Process Static Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(p)(1)(xiv) Indicate whether the compressor had a scheduled depressurized shutdown during the reporting year

. Unit/Process Static Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(p)(2)(ii) (E) If the leak or vent is routed to flare, combustion, or vapor recovery, report the percentage of time that the r espective device was operational when the compressor source emissions were
routed to the device

. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98.236(p)(3)(i)(F) If the measurement is for a manifolded group of compressor sources, indicate whether the measurement location is prior to or after comingling with non

- compressor emission sources. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98.236(p)(4)(iii) Indic ate whether the measured volume of flow during the reporting year includes compressor blowdown emissions as allowed for in §98.233(o)(3)(ii) and (o)(5)(ii). Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98.236(p )(4)(iv) If the measurement method is for a manifolded group of compressor sources, indicate whether the measurement location is prior to or after comingling with non

- compressor emission

sources. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

Equipment Leaks Surveys

§98. 236(q)(2)(iii) Average time the surveyed components are assumed to be leaking and operational, in hours (average of T p,z in Equation W

- 30 of this subpart for the component type ). Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI



### 21

### Table 2. Final Data Category Assignments and Confidentiality Determinations for New/Substantially Revised Data Elements Assigned to the Unit/Process Operating Characteristics and the Unit/Process Static Characteristics Data Categories (continued)

Rule Citation Final Data Element Category Assignment Final
Determination

§98. 236(q)(3)(ii) Number of meter/regulator runs at above grade transmission

distribution transfer stations surveyed in the calendar year (“Count MR,y ” from Equation W

- 31 of this subpart, for the current calendar year)

. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(q)(3)(iii) Average time that meter/regulator runs surveyed in the calendar year were operational, in hours (average o f T w,y in Equation W

- 31 of this subpart, for the current calendar year). Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(q)(3)(v) Number of meter/regulator runs at above grade transmission

distribution transfer stations surveyed in current leak survey cycle (sum of “Count MR,y ” from Equation W

- 31 of this subpart, for all calendar years included in the leak survey cycle)

. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(q)(3)(vi) Average time that meter/regulator runs surveyed in the current leak survey cycle were operational, in hours (average of “T w,y ” from Equation W

- 31 of this subpart, for all years included in the leak survey cycle)

. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

EOR Injection Pumps

§98. 236(w) Whether CO 2 EOR injection was used at your facility during the calendar year

. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(w) You must indicate whether any EOR injection pump blowdowns occurred during the calendar year. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

EOR Hydrocarbon Liquids

§98. 236(x) Whether hydrocarbon liquids were produced through EOR operations. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

Combustion Equipment for Onshore Petroleum and Natural Gas Production and Natural Gas Distribution Facilities

§98. 236(z)(1)(ii) The total number of combustion units. Unit/Process Static Characteristics that are Not Inputs to Emission Equations Not CBI



### 22

### Table 2. Final Data Category Assignments and Confidentiality Determinations for New/Substantially Revised Data Elements Assigned to the Unit/Process Operating Characteristics and the Unit/Process Static Characteristics Data Categories (continued)

Rule Citation Final Data Element Category Assignment Final
Determination

§98. 236(z)(2)(ii) The type of fuel combusted. Unit/Process Operating Characteristics that are Not Inputs to Emission Equations Not CBI

Onshore Petroleum and Natural Gas Production

§98. 236(aa)(1)(ii)(C) For each unique sub

- basin category, the formation type. Unit/Process Static Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(aa)(1)(ii)(D) For each unique sub

- basin category, the number of producing wells at the end of the calendar year. Unit/Process Static Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(aa)(1)(ii)(E) For each unique sub

- basin category, the number of producing wells acquired during the calendar year. Unit/Process Static Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(aa)(1)(ii)(F) For each unique sub

- basin category, the number of producing wells divested during the calendar year. Unit/Process Static Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(aa)(1)(ii)(G) For each unique sub

- basin category, the number of wells compl eted during the calendar year. Unit/Process Static Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(aa)(1)(ii)(H) For each unique sub

- basin category, the number of wells permanently taken out of production (i.e., plugged and
aband oned) during the calendar year. Unit/Process Static Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(aa)(1)(ii)(I) For each unique sub

- basin category, the average mole fraction of
CH 4 in produced gas. Unit/ Process Operating Characteristics That are Not Inputs to Emission Equations Not CBI

§98. 236(aa)(1)(ii)(J) For each unique sub

- basin category, the average mole fraction of
CO 2 in produced gas. Unit/ Process Operating Characteristics That are Not Inputs to Emission Equations Not CBI

Onshore Natural Gas Processing

§98. 236(aa)(3)(vii) Whether the facility fractionates NGLs. Unit/Process Static Characteristics that are Not Inputs to Emission Equations Not CBI



### 23

### Table 2. Final Data Category Assignments and Confidentiality Determinations for New/Substantially Revised Data Elements Assigned to the Unit/Process Operating Characteristics and the Unit/Process Static Characteristics Data Categories (continued)

Rule Citation Final Data Element Category Assignment Final
Determination

Natural Gas Transmission Compression

§98. 236(aa)(4)(ii) Number of compressors. Unit/Process Static Characteristics that are Not Inputs to Emission Equations Not CBI

§98. 236(aa)(4)(iii) The total compressor power rating for all compressors combined, in horsepower. Unit/ Process Operating Characteristics
That are Not Inputs to Emission Equations Not CBI

Underground Natural Gas Storage

§98. 236(aa)(5)(i) The quantity of gas injected into storage in the calendar year, in
thousand standard cubic feet. Unit/ Process Operating Characteristics That are Not Inputs to Emission Equations Not CBI

§98. 236(aa)(5)(ii) The quantity of gas withdrawn from storage in the calendar year,
in thousand standard cubic feet. Unit/ Process Operating Characteristics That are Not Inputs to Emission Equations Not CBI

§98. 236(aa)(5)(iii) The total storage capacity

, in thousand standard cubic feet. Unit/Process Static Characteristics that are Not Inputs to Emission Equations Not CBI

LNG Import and Export Equipment

§98. 236(aa)(6) For LNG import equipment, the quantity of LNG imported in the calendar year, in thousand standard cubic feet. Unit/ Process Operating Characteristics That are Not Inputs to Emission Equations Not CBI

§98. 236(aa)(7) For LNG export equipment, the quantity of LNG exported in the calendar year, in thousand standard cubic feet. Unit/ Process Operating Characteristics That are Not Inputs to Emission Equations Not CBI

LNG Storage

§98. 236(aa)(8)(i) The quantity of LNG added into storage in the calendar year, in
thousand standard cubic feet. Unit/ Process Operating Characteristics That are Not Inputs to Emission Equations Not CBI

§98. 236(aa)(8)(ii) The quantity of LNG withdrawn from storage in the calendar year, in thousand standard cubic feet

. Unit/ Process Operating Characteristics That are Not Inputs to Emission Equations Not CBI



### 24

### Table 2. Final Data Category Assignments and Confidentiality Determinations for New/Substantially Revised Data Elements Assigned to the Unit/Process Operating Characteristics and the Unit/Process Static Characteristics Data Categories (continued)

Rule Citation Final Data Element Category Assignment Final
Determination

§98. 236(aa)(8)(iii) The total LNG storage capacity in the calendar year, in thousand
standard cubic feet. Unit/Process Static Characteristics that are Not Inputs to Emission Equations Not CBI

Natural Gas Distribution

§98. 236(aa)(9)(i) The quantity of natural gas received at all custody transfer
stations , in thousand standard cubic feet

. Unit/ Process Operating Characteristics That are Not Inputs to Emission Equations Not CBI

§98. 236(aa)(9)(ii) The quantity of natural gas withdrawn from in

- system storage in the reporting year in thousand standard cubic feet. Unit/ Process Operating Characteristics That are Not Inputs to Emission Equations Not CBI

§98. 236(aa)(9)(iii) The quantity of natural gas added to in

- system storage in the reporting year in thousand standard cubic feet. Unit/ Process Operating Characteristics That are Not Inputs to Emission Equations Not CBI

§98. 236(aa)(9)(iv) The quantity of natural gas delivered to end users

, in thousand standard cubic feet. This value does not include stolen gas, or gas
that is otherwise unaccounted for. Unit/ Process Operating Characteristics That are Not Inputs to Emission Equations Not CBI

§98. 236(aa)(9) (v) The quantity of natural gas transferred to third parties such as other LDCs or pipelines

, in thousand standard cubic feet. This value does not include stolen gas, or gas that is otherwise
unaccounted for. Unit/ Process Operating Characteristics
That ar e Not Inputs to Emission Equations Not CBI

§98. 236(aa)(9)(vi) The quantity of natural gas consumed by the LDC for operational

purposes , in thousand standard cubic feet. Unit/ Process Operating Characteristics That are Not Inputs to Emission Equations Not CBI

§98. 236(aa)(9)(vii) The estimated quantity of gas stolen in the calendar year , in
thousand standard cubic feet. Unit/ Process Operating Characteristics That are Not Inputs to Emission Equations Not CBI



### 25

### Table 3. Final Confidentiality Determinations for Data Elements Not Assigned to a Data Category

Rule Cit ation Final Data Element Final Determination

Onshore Petroleum and Natural Gas Production

§98. 236(j)(2)(i)(A) 11 The total annual oil throughput that is sent to atmospheric tanks in the basin , in barrels. Not CBI

§98. 236(aa)(1)(i)(A) The quantity of gas produced in the calendar year from wells, in thousand standard cubic feet. This includes gas that is routed to a pipeline, vented or flared, or used in field operations. This does not include gas injected back into reservoirs or shrinkage resulting from lease condensate production. Not CBI

§98. 236(aa)(1)(i)(B) The quantity of gas produced in the calendar year for sales

, in thousand standard cubic feet

. Not CBI

§98. 236(aa)(1)(i)(C) For each basin, the quantity of crude oil and condensate produced in the calendar year for sales, in barrels

. Not CBI

Offshore Petroleum and Natural Gas Production

§98. 236(aa)(2)(i) The total quantity of gas handled at the offshore platform in the calendar year, in thousand standard cubic
feet , including production volumes and volumes transferred via pipeline from another location

. Not CBI

§98. 236(aa)(2)(ii) The total quantity of oil and condensate handled at the offshore platform in the calendar year

, in barrels

, including production volumes and volumes transferred via pipeline from another location

. Not CBI

11 Reporters may delay reporting of this data element for a period of two years in cases where wildcat wells and/or delineation wells are the only wells in a sub

basin for which data was collected.



### 26

### Table 4

. Data Elements With No Confidentiality Determination

Rule Citation Data Element

Onshore Natural Gas Processing

§98.236( aa)(3)(iii ) The cumulative quantity of all NGLs (bulk and fractionated) received at the gas processing plant in the calendar year, in bar rels.

§98.236(aa)(3)( i v) The cumulative quantity of all NGLs (bulk and fractionated) leaving the gas processing plant in the calendar year, in barrels.

§98.236(aa)(4)(i) The quantity of gas transported through the compressor station in the calendar year, in thousand standard cubic feet.

§98.236(aa)(4)(iv) The average upstream pipeline pr essure, in pounds per square inch gauge.

§98.236(aa)(4)(v) The average downstream pipeline pressure, in pounds per square inch gauge.



### 27

### Table 5

. Proposed Da ta Elements Removed From Tables 1 Through 3 or Moved to a Different Table Since Proposal

Rule Citation Proposed Data Element Reason for Change Since Proposal

Acid Gas Removal

§98.236 (d)(2)(i)(B) If you used Calculation Method 1 or 2 in §98.233(d), the total annual volume of gas vented from the acid gas removal unit , in
cubic feet

. This data element is an input to emissions estimation equations
for Calculation Methods 1 and 2 and was included in the Inputs
memorandum at proposal

. It is also included in the final Inputs
memorandum.

Dehydrators

§98.236 (e)(2)(i) For glycol dehydrators with an annual average daily natural gas throughput less than 0.4 million standard cubic feet per day, the total number of dehydrators at the facility. This data element is equivalent to the current data element in §98.236(c)(4)(ii)(A). The final confidentiality d etermination of
“not CBI” for this data element was documented in
“Memorandum

- Final Data Category Assignments and Confidentiality Determinations for the 2012 Final CBI Rule” in
Docket ID No. EPA

- HQ

- OAR

- 2011

- 0028.

§98.236 (e)(3)(i) For dehydrators that use desiccant, the total number of dehydrators at the facility. This data element is equivalent to the current data element in §98.236(c)(4)(iii)(A). The final confidentiality determination of
“not CBI” for this data element was documented in
“Memorandum

- Final Data Category Assignments and Confidentiality Determinations for the 2012 Final CBI Rule” in
Docket ID No. EPA

- HQ

- OAR

- 2011

- 0028.

Gas Well Compl etions and Workovers with Hydraulic Fracturing
§98.236(g)(3) For each sub

- basin and well type combination with hydraulic fracturing, the total number of completions and the total number
of workovers. Th ese data elements are equivalent to the current data element s in §98.236(c)( 6 )(i)(A) and (C) . The final confidentiality
determination of “not CBI” for th ese data element s was documented in “Memorandum

- Final Data Category Assignments and Confidentiality Determinations for the 2012 Final CBI Rule”
in Docket ID No. EPA

- HQ

- OAR

- 2011

- 0028.

§98.236 (g)(6) If you used Equation W

- 10B to calculate annual volumetric total gas emissions for completions that vent gas to the atmosphere, then you must report the vented natural gas volume, in standard cubic feet, for each well in the sub

- basin (“FV s,p ” in Equation W

10B). This data element is an input to emissions estimation E quation
W

- 10B and was included in the Inputs memorandum at proposal

. It is also included in the final Inputs memorandum.



### 28

### Table 5

. Proposed Da ta Ele ments Removed From Tables 1 Through 3 or Moved to a Different Table Since Proposal (continued)

Rule Citation Proposed Data Element Reason for Change Since Proposal
Gas Well Completions and Workovers without Hydraulic Fracturing

§98.236(h)(1)(iii) Total number of hours that gas vented directly to the atmosphere during venting for all completions in the sub

- basin category (the
sum of all “T p ” for completions that vented to the atmosphere as used in Equation W

- 13B). This data element is equivalent to the c urrent data element in §98.236(c)(6)(ii)(C). The final confidentiality determination of
“not CBI” for this data element was documented in
“Memorandum

- Final Data Category Assignments and Confidentiality Determinations for the 2012 Final CBI Rule” in
Docket ID No. EPA

- HQ

- OAR

- 2011

- 0028.
Well Testing

§98.236(l)(1)(iv) If oil well testing is performed where emissions are not vented to a flare, the average flow rate for well(s) tested, in barrels of oil per day The EPA has determined that t his data element is an input to
emissions estimation E quation W

- 17A and has moved discussion
of this data element to the final Inputs memorandum and section III.B of the preamble to the final amendments

. §98.236(l)(2)(iv) If oil well testing is performed where emissions are vented to a flare, the average flow rate in barrels of oil per day for well(s)
tested. The EPA has determined that this data element is an input to
emissions estimation E quation W

- 17A and has moved discussion
of this data element to the final Inputs memorandum and section III.B of the preamble to the final amendments.

§98.236(l)(3)(iii) If gas well testing is performed where emissions are not vented to a flare, the average annual production rate in actual cubic feet per day for well(s) tested. The EPA has determined that this data element is an input to
emissions estimation E quation W

- 17B and has moved discussion of this data element to the final Inputs memorandum and section III.B of the preamble to the final amendments.

§98.236 (l)(4)( iii) If gas well testing is performed where emissions are vented to a flare, the average annual production rate in actual cubic feet per day for well(s) tested. The EPA has determined that this data element is an input to
emissions estimation E quation W

- 17 B and has moved discussion of this data element to the final Inputs memorandum and section III.B of the preamble to the final amendments.

Centrifugal Compressors

§98.236(o)(1)(xiv) Year compressor was installed. For reasons discussed in the 2014 comment response document,
the EPA did not finalize this data element.

§98.236(o)(1)(xv) Compressor model name and description. For reasons discussed in the 2014 comment response document,
the EPA did not finalize this data element.



### 29

### Table 5

. Proposed Da ta Ele ments Removed From Tables 1 Through 3 or Moved to a Different Table Since Proposal (continued)

Rule Citation Proposed Data Element Reason for Change Since Proposal
Reciprocating Compressors
§98.236(p)(1)(xiv) Year compressor was installed. For reasons discussed in the 2014 comment response document,
the EPA did not finalize this data element.

§98.236(p)(1)(xv) Compressor model name and description. For reasons discussed in the 2014 comment response document,
the EPA did not finalize this data element

. Combustion

§98.236(z)(2)(i) The type of combustion unit. For reasons discussed in the 2014 comment response document,
the EPA did not finalize this data element.

Onshore Petroleum and Natural Gas Production

§98.236(aa)(1)(i)(D) For each basin, the quantity of lease condensate produced in the calendar year for sales, in barrels. For reasons discussed in the 2014 comment response document,
this data element was modified and combined wit h the data
element in §98.236(aa)(1)(i)(C) of the final amendments.

Offshore Petroleum and Natural Gas Production

§98.236(aa)(2)(iii) The quantity of condensate produced from the offshore platform in the calendar year for sales, in barrels. For reasons discussed in the 2014 comment response document,
this data element was modified and combined with the data
element in §98.236(aa)(2)(ii) of the final amendments.
Onshore Natural Gas Processing

§98.236(aa)(3)(i) The quantity of natural gas received at the gas processing plant in the calendar year, in thousand standard cubic feet. For reasons discussed in section III.B of the preamble to the final amendments, the EPA decided to change the confidentiality
determination for this data element fr om “not CBI” to “CBI”. As a result, the determination is consistent with the categorical determination for this data element, and it has been moved to
From Table 3 to Table 1. This data element is classified in the “Raw Materials Consumed” data category.

§98.236(aa)(3)(ii) The quantity of processed (residue) gas leaving the gas processing plant, in thousand standard cubic feet. For reasons discussed in section III.B of the preamble to the final amendments, the EPA decided to change the confidentiality
dete rmination for this data element from “not CBI” to “CBI”. As a result, the determination is consistent with the categorical determination for this data element, and it has been moved to
From Table 3 to Table 1. This data element is classified in the
“Produc tion/Throughput” data category.



### 30

### Table 5

. Proposed Da ta Ele ments Removed From Tables 1 Through 3 or Moved to a Different Table Since Proposal (continued)

Rule Citation Proposed Data Element Reason for Change Since Proposal

§98.236(aa)(3)(iii) The cumulative quantity of all NGLs (bulk and fractionated) received at the gas processing plant in the calendar year, in
barrels. For reasons discussed in section III.B of the preamble to the final

amen dments, the EPA decided not to finalize a confidentiality determination for this data element, and moved it from Table 3 to Table 4.

§98.236(aa)(3)(iv) The cumulative quantity of all NGLs (bulk and fractionated) leaving the gas processing plant in the calendar year, in barrels. For reasons discussed in section III.B of the preamble to the final amendments, the EPA decided not to finalize a confidentiality determination for this data element, and moved it from Table 3 to Table 4.

§98.236(aa)(4)(i) The quantity of gas transported through the compressor station in the calendar year, in thousand standard cubic feet. For reasons discussed in section III.B of the preamble to the final amendments, the EPA decided not to finalize a confidentiality
determinatio n for this data element, and moved it from Table 2 to Table 4.

§98.236(aa)(4)(iv) The average upstream pipeline pressure, in pounds per square inch gauge. For reasons discussed in section III.B of the preamble to the final amendments, the EPA decided not to finalize a confidentiality determination for this data element, and moved it from Table 2 to Table 4.

§98.236(aa)(4)(v) The average downstream pipeline pressure, in pounds per square inch gauge. For reasons discussed in section III.B of the preamble to the final amendments, the EPA decided not to finalize a confidentiality determination for this data element, and moved it from Table 2 to Table 4.



### 31

### Table 6

. Da ta Elements Added to Tables 1 and 2 Since Proposal

Rule Citation Final Data Element Data Category Confidentiality Determination and Rationale

Dehydrators

§98.236(e)(2)(iii) For glycol dehydrators with an annual average daily natural gas throughput less than 0.4 MMscfd and vented to a control device other than a vapor recovery device or a flare or regenerator firebox/fire tubes, the type of control device(s). Unit/ Process Operating
Characteristics That are Not Inputs to Emission Equations Although §98.236(e)(2)(i) of t he proposed amendments specified that the type of control device must be reported, the discussion in Table 2 of the preamble to the proposed amendments did not mention reporting the type of control device.
This data element is identical to the data element in §98.236(e)(3)(i) for reporting the type of
control device used to control emissions from dehydrators that use desiccant. The proposed confidentiality determination of “not CBI” for §98.236(e)(3)(i) is being finalized. Therefore, we are also finalizing a determination of “not CBI” for the type of control device data element in §98.236(e)(2)(iii).

Gas Well Completions and Workovers With Hydraulic Fracturing

§98.236( g)(5)(i) If you used Equation W

- 10A to calculate annual volumetric total gas emissions, then you must report the cumulative gas flowback time, in hours, for each
sub

- basin, from when gas is first detected until sufficient quantities are present to enable separation

, and the cumulative flowback time, in hours, for each
sub

- basin, after sufficient quantities of gas are present to enable separation (sum of “T p,i ” values and sum of
“T p,s ” values used in Equation W

- 10A). Unit/ Process Operating
Characteristics That are
N ot Inputs to Emission Equations This data element is an input if a completion or
workover was conducted for only one well in a
sub

- basin and well type combination category. Thus, this data element is also discussed in the final Inputs memorandum. However, the data element is not an input when more than one completion or workover is conducted i n a category. We are finalizing a confidentiality
determination of “not CBI” for this data element because the cumulative gas flowback time for multiple completions or workovers would not
disclose information on individual wells and is not likely to cause substantial competitive harm.



### 32

### Table 6

. Da ta Elements Added to Tables 1 and 2 Since Proposal (continued)

Rule Citation Final Data Element Data Category Confidentiality Determination and Rationale
Onshore Production Storage Tanks
§98.236(j)(2)(ii)(B) The number of atmospheric tanks in the sub

- basin that
did not control emissions with flares. Unit/ Process Operating
Characteristics That are Not Inputs to Emission Equations These data elements were inadvertently omitted
from the disc ussion of confidentiality determinations in the preamble to the proposed
amendments. These data elements are comparable to the data elements in §98.236(e)(2) and (e)(3) for the counts of dehydrators that vent to atmosphere, flares, vapor recovery, or other types of control devices. The data elements in§98.236(e)(2) and (e)(3) were proposed as “not CBI”, and they are being finalized as proposed. Thus, we are also finalizing confidentiality
determinations of “not CBI” for the data elements in §98.236(j)(2)(ii )(B) and (j)(2)(iii)(B). §98.236(j)(2)(iii)(B) The number of atmospheric tanks in the sub

- basin that
controlled emissions with flares. Unit/ Process Operating
Characteristics That are Not Inputs to Emission Equations

Transmission Storage Tanks

§98.236(k)(2)(ii) Measured scrubber dump valve leak rate vented directly to the atmosphere (average leak rate from a continuous flow measurement device), in standard cubic feet per hour. Emissions These data elements were inadvertently omitted
from the discussion of confidentiality determinations in the preamble to the proposed
amendments and supporting memoranda

. The measured scrubber dump valve leak rates are assigned to the Emissions data category which has a categorical determination of “not CBI”. Th us, we are finalizing a confidentiality determination
of “not CBI” for the data elements in §98.236(k)(2)(ii). The duration of time that a leak occurred or was vented to a flare is comparable to the data element in §98.236(j)(3)(ii) for the total
time that dump valves on gas

- liquid separators did not close properly. The proposed confidentiality
determination of “not CBI” for the data element in §98.236(j)(3)(ii) is being finalized as proposed. Thus, we are also finalizing a confidentiality
determination of “not CBI” for the data elements in §98.236(k)(2)(iii) and (k)(3)(iii). §98.236(k)(2)(iii) Duration of time that the leak is counted as having occurred, in hours. Unit/ Process Operating
Characteristics That are Not Inputs to Emission Equations

§98.236(k)(3)(ii) Measured scrubber dump valve leak rate vented for flare (average leak rate from a continuous flow measurement device), in standard cubic feet per hour. Emissions

§98.236(k)(3)(iii) Duration of time that flaring occurred, in hours. Unit/ Process Operating
Characteristics That are Not Inputs to Emission Equations



### 33

### Table 6

. Da ta Elements Added to Tables 1 and 2 Since Proposal (continued)

Rule Citation Final Data Element Data Category Confidentiality Determination and Rationale
Centrifugal Compressors

§98.236(o)( 1)(x) For a centrifugal compressor with blind flanges, indicate the associated dates when it has blind flanges. Unit/ Process Static
Characteristics That are Not Inputs to Emission Equations See entry for §98.236(o)(3)(i)(F), (o)(4)(iii), and (o)(4)(iv).

§98.236(o)(2)(i)(A) Centrifugal compressor name or ID. Facility and Unit
Identifier Information These data elements for centrifugal compressors were inadvertently omitted from the discussion of confidentiality determinations in Table 1 of this
memorandum for the proposed amendments. However, they are identical to elements in §98.236(p)(2)(i)(A) throu gh (C) which were assigned to the same data category and for which the proposed confidentiality determination was “not CBI”. The confidentiality determinations for §98.236(p)(2)(i)(A) through (C) are being finalized as proposed. Therefore, we are also
fina lizing confidentiality determinations of “not CBI” for the data elements in §98.236(o)(2)(i)(A) through (C). §98.236(o)(2)(i)(B) Centrifugal compressor source (wet seal, isolation valve, or blowdown valve). Facility and Unit
Identifier Information

§98.236(o)(2)(i)(C) Unique name or ID for the leak or vent. Facility and Unit
Identifier Information



### 34

### Table 6

. Da ta Elements Added to Tables 1 and 2 Since Proposal (continued)

Rule Citation Final Data Element Data Category Confidentiality Determination and Rationale

§98.236(o)(3)(i)(F) If the measurement is for a manifolded group of compressor sources, indicate whether the measurement location is prior to or after co mingling with non

compressor emission sources. Unit/ Process Static
Characteristics That are Not Inputs to Emission Equations These data elements were added in the final amendments to harmonize reporting requirements with changes to the measurement require ments that were made after considering public comments on the proposal. These data elements were assigned to this data category because, like other elements in this data category, they do not vary with time or with operation of the compressor. Additionally , these data elements describe only an aspect of compressor design or emissions handling techniques that reveal s no sensitive information that would be likely to cause substantial harm to any type of natural gas facility. Therefore, we conclude that it is appropriate to assign the data elements to this data category and finalize a determination of “not
CBI” for these data elements. §98.236(o)(4)(iii) Indicate whether the measured volume of flow during the reporting year includes compressor blowdown emissions as allowed for in §98.233(o)(3)(ii) and (o)(5)(iii). Unit/ Process Static
Characteristics That are Not Inputs to Emission Equations

§98.236(o)(4)(iv) If the measurement is for a manifolded group of compressor sources, indicate whether the measurement location is prior to or after comingling with non

compressor emission sources. Unit/ Process Static
Characteristics That are Not Inputs to Emission Equations

Reciprocating Compressors
§98.236(p)(1)(xii) For a reciprocating compressor with blind flanges, indicate the associated dates when it has blind flanges. Unit/ Process Static
Characteristics That are Not Inputs to Emission Equations These data elements were added in the final
amendm ents to harmonize reporting requirements with changes to the measurement requirements that were made after considering public comments on the proposal. These data elements were assigned to this data category because, like other elements in this data catego ry, they do not vary with time or with operation of the compressor. Additionally, these data elements describe only an aspect of compressor design or emissions handling techniques that reveal s no sensitive information that would be likely to cause
substant ial harm to any type of natural gas facility. Therefore, we conclude that it is appropriate to assign the data elements to this data category and finalize a determination of “not
CBI” for these data elements. §98.236(p)(3)(i)(F) If the measurement is for a manifolded group of compressor sources, indicate whether the measurement location is prior to or after comingling with non

compressor emission sources. Unit/ Process Static
Characteristics That are Not Inputs to Emission Equatio ns §98.236(p)(4)(iii) Indicate whether the measured volume of flow during the reporting year includes compressor blowdown emissions as allowed for in §98.233(p)(3)(ii) and (p)(5)(iii). Unit/ Process Static
Characteristics That are Not Inputs to Emission Equations
§98.236(p)(4)(iv) If the measurement is for a manifolded group of compressor sources, indicate whether the measurement location is prior to or after comingling with non

compressor emission sources. Unit/ Process Static
Characteristics That are Not Inputs to Emission Equations



### 35

### Table 6

. Da ta Elements Added to Tables 1 and 2 Since Proposal (continued)

Rule Citation Final Data Element Data Category Confidentiality Determination and Rationale
Equipment Leaks by Population Count

§98.236(r)(2)(v)(A) Annual CO 2 emissions, in metric tons CO 2 , from above grade metering

- regulating stations that are not above grade transmission

- distribution transfer stations. Emissions These data elements were inadvertently omitted from the discussion of confidentiality determinations in the preamble to the proposed amendments and supporting memoranda. The annual GHG emissions are assigned to the Emissions data category which h as a categorical determination of “not CBI”. Thus, we are finalizing a confidentiality determination of “not
CBI” for the data elements in §98.236(r)(2)(v)(A) and (r)(2)(v)(B). §98.236(r)(2)(v)(B) Annual CH 4 emissions, in metric tons CH 4 , from above grade metering regulating stations that are not above grade transmission

- distribution transfer stations. Emissions



### 36