### MEMORANDUM

To: Docket # EPA

- HQ

- OAR

- 2011

- 0512

From: Mark d e Figueiredo, EPA/CCD

Date: November 10 , 201 4

Subject: Final Revisions to the Subpart W Reporting Requirements in the “ Greenhouse Gas Reporting Rule: 2014 Revisions and Confidentiality Determinations for Petroleum and Natural Gas Systems ; Final Rule ”

In the notice en titled “ Greenhouse Gas Reporting Rule: 2014 Revisions and Confidentiality Determinations for Petroleum and Natural Gas Systems ; Final Rule ,” the EPA is finalizing changes to the reporting requirements in the Petroleum and Natural Gas Systems (subpart W) source category of 40 CFR Part 98

. T he final amendments change monitoring and data reporting requirements, re vise calculation methods, clarify certain terms and definitions, and
correct technical and editorial errors

. Specifically, t he reporting requirement s section of subpart W has been re

- written to revise the reported data elements to clarify and align more
cl osely with the calculation methods and to clearly identify the data that must be reported for each source type.

Table 1 lists all the changes to the subpart W reporting requirements, including the final and current rule text, and an identification of whether the data element is new, revised, or a current reporting requirement. Data elements that are listed as “C urrent ” are those with eit her only minor changes that do not change the underlying data required to be reported in the existing
data element or data elements that have been deleted . Data elements listed as “Revised” are those
with substantial revisions to e xisting reporting require ments.

1

### Table 1. Final Changes to the Subpart W Reporting Requirements

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

Natural Gas Pneumatic Device Venting

§98 .236(b) (b) You must indicate whether the facility contains
the following types of equipment: continuous high bleed natural gas pneumatic devices, continuous low bleed natural gas pneumatic devices, and intermittent bleed natural gas pneumatic devices. If the facility contains any continuous high bleed natural gas pneumatic devices, continuous low bleed natural gas pneumatic devices, or intermittent bleed natural gas pneumatic devices , you must report the information specified in paragraphs (b)(1) through (b)(4) of thi s section. New

§98 .236(b)(1)(i) §98 .236(c)(1)(i), (ii), (iii) (1) The number of natural gas pneumatic devices as specified in paragraphs (b)(1)(i) and (b)(1)(ii) of this
section.
(i) The total number of devices of each type

, determined according to §98 .233(a)(1) and (a)(2). (i) Actual count and estimated count separately of natural gas pneumatic high bleed devices as applicable.
(ii) Actual count and estimated count separately of natural gas pneumatic low bleed devices as applicable.
(iii) Actual count and estimated count separately of natural gas pneumatic
intermittent bleed devices as applicable. Current



### 2

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(b)(1)(ii) and (b)(1)(ii) (A) §98 .236(c)(1)(i), (ii), (iii) (ii) If the reported value in paragraph (b)(1)(i) of
this section is an estimated value determined according to §98 .233(a)(2), then you must report the information specified in paragraphs (b)(1)(ii)(A) through (b)(1)(ii)(C) of this section. (A) The number of devices of each type reported in paragraph (b)(1)(i) of this section that are counted. (i) Actual count and estimated
count separ ately of natural gas pneumatic high bleed devices as applicable.
(ii) Actual count and estimated count separately of natural gas pneumatic low bleed devices as applicable.
(iii) Actual count and estimated count separately of natural gas pneumatic intermitt ent bleed devices as applicable. Current

§98 .236(b)(1)(ii)(B) §98 .236(c ) (1)(i), (ii), (iii) (B) The number of devices reported in paragraph (b)(1)(i) of this section that are estimated (not counted). (i) Actual count and estimated count separately of natural gas pneumatic high bleed devices as applicable.
(ii) Actual count and estimated count separately of natural gas pneumatic low bleed devices as applicable.
(iii) Actual count and estimated count separately of natural gas pneumatic intermittent bleed devices as applicable. Current

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

§98 .236(b)(2) (2) For each type of pneumatic device, the

e stimated average number of hours in the calendar year that the natural gas pneumatic devices reported in paragraph (b)(1)(i) of this section were operating
in the calendar year (“T t ” in Equation W

- 1 of this subpart). New



### 3

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(b)(3) §98 .236(c)(1)(iv) (3) Annual CO 2 emissions, in metric tons CO 2 , for the natural gas pneumatic devices combined, calculated using Equation W

- 1 of this subpart and §98 .233(a)(4), and reported in paragraph (b)(1)(i)
of this section. Report annual CO 2 and CH 4 emissions at the facility level, expressed in metric tons CO 2 e for each gas, for each of the following pieces of equipment: high bleed pneumatic devices; intermittent bleed pneumatic devices; low bleed pneumatic
devices. Current

§98 .236(b)(4) §98 .236(c)( 1)(iv) (4) Annual CH 4 emissions, in metric tons CH 4 , for the natural gas pneumatic devices combined, calculated using Equation W

- 1 of this subpart and §98 .233(a)(4), and reported in paragraph (b)(1)(i) of
this section. Report annual CO 2 and CH 4 emissions a t the facility level, expressed in metric tons CO 2 e for each gas, for each of the following pieces of equipment: high bleed pneumatic devices; intermittent bleed pneumatic devices; low bleed pneumatic
devices. Current

Natural Gas Pneumatic Pump Venting

§98 .236(c) (c) You must indicate whether the facility has any natural gas driven pneumatic pumps. If the facility contains any natural gas driven pneumatic pumps,
then you must report the information specified in paragraphs (c)(1) through (c)(4) of th is section. New

§98 .236(c)(1) §98 .236(c)(2)(i) (1) Count of natural gas driven pneumatic pumps. Count of natural gas driven pneumatic pumps. Current

§98 .236(c)(2) (2) Average estimated number of hours in the
calendar year the pumps were operational (“T” in Equation W

- 2 of this subpart). New



### 4

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(c)(3) §98 .236(c ) (2)(ii) (3) Annual CO 2 emissions, in metric tons CO 2 , for all natural gas driven pneumatic pumps combined,
calculated according to §98 .233(c)(1) and (c)(2). Report annual CO 2 and CH 4 emissions at the facility level, expressed in metric tons CO 2 e for each gas, for all natural gas driven pneumatic pumps
combined. Current

§98 .236(c)(4) §98 .236 ( c ) (2)(ii) (4) Annual CH 4 emissions, in metric tons CH 4 , for all natural gas driven pneumatic p umps combined,
calculated according to §98 .233(c)(1) and (c)(2). Report annual CO 2 and CH 4 emissions at the facility level, expressed in metric tons CO 2 e for each gas, for all natural gas driven pneumatic pumps
combined. Current

Acid Gas Removal

§98 .236(d) (d) You must indicate whether your facility has any acid gas removal units that vent directly to the atmosphere, to a flare or engine, or to a sulfur recovery plant. If your facility contains any acid gas
removal unit s that vent directly to th e atmosphere, to a flare or engine, or to a sulfur recovery plant,
then you must report the information specified in paragraphs (d)(1) and (d)(2) of this section. New

§98 .236(d)(1) and §98 .236(d)(1) (i) §98 .236(c)(3)(vi) (1) Y ou must report the information specified in paragraphs (d)(1)(i) through (d)(1)(v) of this section for each acid gas removal unit

. (i) A unique name or ID number for the acid gas
removal unit. For the onshore petroleum and natural gas production industry segment, a different name or ID may be used for a single acid gas removal unit for each location it operates at in a given year. For the onshore natural gas processing industry segment only, report a unique name or
ID number for the AGR unit. Current



### 5

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(d)(1)(ii) §98 .236(c)(3)(i) (ii) Total feed rate entering the acid gas removal unit, using a meter or engineering estimate based on process knowledge or best available data, in million cubic feet per year. Total throughput off the acid gas removal unit using a meter

or engineering estimate based on process knowledge or best
available data in million cubic feet per year. Revised

§98 .236(d)(1)(iii) §98 .236(c)(3)(vii) (iii) The calculation method used to calculate CO 2 emissions from the acid gas removal unit , as specified in §98 .233(d)

. An indication of which calculation methodology was
used for the AGR. Current

§98 .236(d)(1)(iv) (iv) Whether any CO 2 emissions from the acid gas
removal unit are recovered and transferred outside the facility, as specified in §98 .233(d)(11).

... New

§98 .236(d)(1)(iv) §98 .236(c)(3)(iv) (iv) ... If any CO 2 emissions from the acid gas
removal unit were recovered and transf erred outside the facility, then you must report the annual quantity of CO 2 , in metric tons CO 2 , that was recovered and transferred outside the facility under subpart PP of this part

. Report the annual quantity of
CO 2 , expressed in metric tons
CO 2 e, that was recovered from
the AGR unit and transferred outside the facility, under subpart PP of this part. Current

§98 .236(d)(1)(v) §98 .236(c)(3)(v) (v) Annual CO 2 emissions, in metric tons CO 2 , from the acid gas removal unit, calculated using any one of the calculation methods specified in §98 .233(d) and as specified in §98 .233(d)(10) and (11). Report annual CO 2 emissions for the AGR unit, expressed in
metric tons CO 2 e. Current

§98 .236(d)(1)(v i) (vi) Sub

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



### 6

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(d)(2) (i) and (d)(2) (i)(A) §98 .236(c)(3)(ii) (i) If you used Calculation Method 1 or Calculation Method 2 as specified in §98 .233(d) to calculate
CO 2 emissions from the acid gas removal unit, then you must report the information specified in paragraphs (d)(2)(i)(A) and (d)(2)(i)(B) of this
section. (A) A nnual average volumetric fraction of CO 2 in the vent gas exiting the acid gas removal unit. For Calculation Methodology 1 and Calculation Methodology 2
of §98 .233(d), annual average
fraction of CO 2 content in the vent from the acid gas removal unit (refer to §98 .233(d)(6)). Current

§98 .236(d)(2)( i )(B) (B) Annual volume of gas vented from the acid gas removal unit, in cubic feet. New

§98 .236(d)(2) (ii) and (d)(2) (ii)(A) (ii) If you used Calculation Method 3 as specified in §98 .233(d) to calculate CO 2 emissions from the acid gas removal unit, then you must report the information specified in paragraphs (d)(2)(ii)(A) through (d)(2)(ii)( D ) of this section.
(A) Which equation was used : Equation W

- 4A or

W

- 4B. New

§98 .236(d)(2)(ii)(B) §98 .236(c)(3)(ii i ) (B) Annual average volumetric fraction of CO 2 in the natural gas flowing out of the acid gas removal unit, as specified in Equation W

- 4A or Equation W

4B of this subpart. For Calculation Methodology 3
of §98 .233(d), annual average
volume fraction of CO 2 content of natural gas into and out of the acid gas removal unit (refer

to §98 .233(d)(7) and (d)(8)). Current

§98 .236(d)(2)(ii)( C ) §98 .236(c)(3)(ii i ) (C) Annual average volumetric fraction of CO 2 content in natural gas flowing into the acid gas removal unit, as specified in Equation W

- 4A or Equation W

- 4B of this subpart. For Calculation Methodology 3
of §98 .233(d), annual average
volume fraction of CO 2 content of natural gas into and out of
the ac id gas removal unit (refer

to §98 .233(d)(7) and (d)(8)). Current



### 7

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(d)(2)(ii)( D ) §98 .236(c)(3)(i) (D) The natural gas flow rate used, as specified in Equation W

- 4A of this subpart, reported as either total annual volume of natural gas flow into the acid gas removal unit in cubic feet at actual conditions ; or total annual volume of natural gas flow out of the acid gas removal unit , as specified in Equation W

4B of this subpart, in cubic feet at actual conditions. Total throughput off the acid

gas remo val unit using a meter or engineering estimate based on process knowledge or best
available data in million cubic feet per year. Current

§98 .236(d)(2)(iii) and (d)(2)(iii) (A) (iii) If you used Calculation Method 4 as specified

in §98 .233(d) to calculate CO 2 emissions from the acid gas removal unit, then you must report the information specified in paragraphs (d)(2)(iii)(A) through (d)(2)(iii)(L) of this section, as applicable to the simulation software package used

. (A) The name of the simulation softwar e package
used. New

§98 .236(d)(2)(iii)(B) (B) Natural gas feed temperature, in degrees
Fahrenheit. New

§98 .236(d)(2)(iii)(C) (C) Natural gas feed pressure, in pounds per square
inch. New

§98 .236(d)(2)(iii)(D) §98 .236(c)(3)(i) (D) Natural gas flow rate, in standard cubic feet per
minute. Total throughput off the acid gas removal unit using a meter or engineering estimate based on process knowledge or best
available data in million cubic feet per year. Revised

§98 .236(d)(2)(iii)(E) (E) Acid gas content of the feed natural gas, in mole
percent. New

§98 .236(d)(2)(iii)(F) (F) Acid gas content of the outlet natural gas, in mole percent. New

§98 .236(d)(2)(iii)(G) (G) Unit operating hours, excluding downtime for maintenance or standby, in hours per year. New



### 8

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(d)(2)(iii)(H) (H) Exit temperature of the natural gas, in degrees
Fahrenheit. New

§98 .236(d)(2)(iii )( I) (I ) Solvent pressure, in pounds per square inch. New

§98 .236(d)(2)(iii )( J) (J) Solvent temperature, in degrees Fahrenheit. New

§98 .236(d)(2)(iii)(K) (K) Solvent circulation rate, in gallons per minute. New

§98 .236(d)(2)(iii) (L) (L) Solvent weight, in pounds per gallon. New

Dehydrators

§98 .236(e) (e) You must indicate whether your facility contains any of the following equipment: glycol dehydrators
with an annual average daily natural gas throughput greater than or equal to 0.4 million standard cubic feet per day, glycol dehydrators with an annual average daily natural gas throughp ut less than 0.4 million standard cubic feet per day, and dehydrators
that use desiccant. If your facility contains any of the equipment listed in this paragraph (e), then you must report the applicable information in paragraphs (e)(1) through (e)(3). New

§98 .236(e) (1) and (e)(1)(i) §98 .236(c)(4)(i)(L) (1) For each absorbent dehydrator that has an annual average daily natural gas throughput greater than or equal to 0.4 million standard cubic feet per day (as specified in §98 .233(e)(1)), you must report the information specified in paragraphs (e)(1)(i) through (e)(1)(xviii) of this section for the dehydrator. (i) A unique name or ID number for the dehydrator. For the onshore petroleum and natural gas production industry segment, a different name or ID

may be used for a single dehydrator for each location it operates at in a given year. For the onshore natural gas processing industry segment only, report a unique name or ID number for glycol dehydrator. Current



### 9

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(e) (1)(ii) §98 .236 (c) (4)(i)(A) (ii) Dehydrator feed natural gas flow rate in million standard cubic feet per day , determined by engineering estimate based on best available data. Glycol dehydrator feed natural gas flow rate in MMscfd, determined by engineering
estimate based on best
availabl e data. Current

§98 .236(e) (1)(iii) (iii) Dehydrator feed natural gas water content, in pounds per million standard cubic feet. New

§98 .236(e) (1)(iv) (iv) Dehydrator outlet natural gas water content, in pounds per million standard cubic feet. New

§98 .236(e) (1)(v) §98 .236 (c) (4)(i)(B) (v) Dehydrator absorbent circulation pump type (e.g.

, natural gas pneumatic, air pneumatic, or electric). Glycol dehydrator absorbent circulation pump type Current

§98 .236(e) (1)(vi) (vi) Dehydrator absorbent circulation rate, in gallons per minute. New

§98 .236(e) (1)(vii) §98 .236(c)(4)(i)(E) (vii) Type of absorbent (e.g.

, triethylene glycol (TEG), diethylene gl y col (DEG), or ethylene glycol (EG)). Type of absorbent. Current

§98 .236(e)(1 )( viii) §98 .236(c)(4)(i)(C) (viii) Whether stripper gas is used in dehydrator. Whether stripper gas is used in glycol dehydrator. Current

§98 .236(e)(1)(ix) §98 .236(c)(4)(i)(D) (ix) Whether a flash tank separator is used in dehydrator. Whether a flash tank separator is used in glycol dehydrator. Current

§98 .236(e)(1)(x) §98 .236(c)(4)(i)(F) (x) Total time the dehydrator is operating

, in hours. Total time the glycol dehydrator is operating in
hours. Current

§98 .236(e)(1)(xi) §98 .236(c)(4)(i)(G) (xi) Temperature of the wet natural gas, in degrees
Fahrenheit. Temperature, in degrees Fahrenheit and pressure, in psig, of the wet natural gas. Current

§98 .236(e)(1)(xii) §98 .236(c)(4)(i)(G) (xii) Pressure of the wet natural gas, in pounds per square inch gauge

. Temperature, in degrees Fahrenheit and pressure, in psig, of the wet natural gas. Current



### 10

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(e)(1 )( xiii) §98 .236 (c) (4)(i)(H) (xiii) Mole fraction of CH 4 in wet natural gas. Concentration of CH 4 and CO 2 in wet natural gas. Current

§98 .236(e)(1)(xiv) §98 .236 (c) (4)(i)(H) (xiv) Mole fraction of CO 2 in wet natural gas. Concentration of CH 4 and CO 2 in wet natural gas. Current

§98 .236(e)(1)(xv) §98 .236 (c) (4)(i)(I) (xv) Whether any dehydrator emissions are vented to a vapor recovery device. What vent gas controls are used (refer to §98 .233(e)(3) and (e)(4)). Current

§98 .236(e)(1)(xvi) §98 .236 (c) (4)(i)(I) (xvi) Whether any dehydrator emissions are vented to a flare or regenerator firebox/fire tubes

. ... What vent gas controls are used (refer to §98 .233(e)(3) and (e)(4)). Current

§98 .236(e)(1)(xvi) and (e)(1)(xvi) (A) §98 .236 (c) (4)(i)(K) (xvi)

... If any emissions are vented to a flare or regenerator firebox/fire tubes, report the information specified in paragraphs (e)(1)(xvi)(A) through (e)(1)(xvi)(C) of this section for these emissions from the dehydrator.
(A) Annual CO 2 emissions, in metric tons CO 2 , for the dehydrator, calculated according to §98 .233(e)(6). For each glycol dehydrator, report annual CO 2 , CH 4 , and

N 2 O emissions that resulted from flaring process gas from the dehydrator, expressed in
metric tons CO 2 e for each gas. Current

§98 .236(e)(1)(xvi) (B) §98 .236 (c) (4)(i)(K) (B) Annual CH 4 emissions, in metric tons CH 4 , for the dehydrator, calculated according to §98 .233(e)(6). For each glycol dehydrator, report annual CO 2 , CH 4 , and

N 2 O emissions that resulted from flaring process gas from the dehydrator, expressed in
metric tons CO 2 e for each gas. Current

§98 .236(e)(1)(xvi) (C) §98 .236 (c) (4)(i)(K) (C) Annual N 2 O emissions, in metric tons N 2 O per year, for the dehydrator, calculated according to §98 .233(e)(6). For each glycol dehydrator, report annual CO 2 , CH 4 , and

N 2 O emissions that resulted from flaring process gas from the dehydrator, expressed in
metric tons CO 2 e for each gas. Current



### 11

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(e)(1)(xvii) (xvii) Whether any dehydrator emissions are vented to the atmosphere without being routed to a flare or regenerator firebox/fire tubes. New

§98 .236(e)(1 )( xvii) and (e)(1)(xvii) (A) §98 .236 (c) (4)(i)(J) (xvii) If any emissions are not routed to a flare or regenerator firebox/fire tubes, then you must report the information specified in paragraphs (e)(1)(xvii)(A) and (e)(1)(xvii)(B) of this section for
th o se emissions from the dehydrator.
(A) Annual CO 2 emissions, in metric tons CO 2 , for the dehydrator when not venting to a flare or regenerator firebox/fire tubes, calculated according

to §98 .233(e)(1) and , if applicable, (e)(5). For each glycol dehydrator, report annual CO 2 and CH 4 emissions that resulted from venting gas directly to the atmosphere, expressed in
metric tons CO 2 e for each gas. Current

§98 .236(e)(1) (xvi i )( B ) §98 .236 (c) (4)(i)(J) (B) Annual CH 4 emissions, in metric tons CH 4 , for the dehydrator when not venting to a flare or regenerator firebox/fire tubes, calculated according

to §98 .233(e)(1) and , if applicable, (e)(5). For each glycol dehydrator, report annual CO 2 and CH 4 emissions that resulted from venting gas directly to the atmosphere, expressed in
metric tons CO 2 e for each gas. Current

§98 .236(e)(1 )( xviii) (xviii) Sub

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

§98 .236(e)(2) and (e)(2) (i) §98 .236 (c) (4)(ii) (A) (2) For glycol dehydrators with an annual average daily natural gas throughput less than 0.4 million standard cubic feet per day (as specified in §98 .233(e)(2)), you must report the information specified in paragraphs (e)(2)(i) through (e)(2)( iv )
of this section for the entire facility

. (i) The total number of dehydrators at the facility

. Count of glycol dehydrators. Current

§98 .236(e)(2)(ii) §98 .236(c)(4)(ii)(B) (ii) Whether any dehydrator emis sion s were vented to a vapor recovery device

. ... Which vent gas controls are used (refer to §98 .233(e)(3) and (e)(4)). Current



### 12

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(e)(2)(ii) (ii)

... If any dehydrator emission s we re vented to a vapor recovery device, then you must report the
total number of dehydrators at the facility that
vented to a vapor recovery device. New

§98 .236(e)(2)(iii) §98 .236(c)(4)(ii)(B) (iii) Whether any dehydrator emission s were vented to a control device other than a vapor recovery device or a flare or regenerator firebox/fire tubes

.

... Which vent gas controls are used (refer to §98 .233(e)(3) and (e)(4)). Current

§98 .236(e)(2)(iii) (iii)

... If any dehydrator emission s were vented to
a control device (s) other than a vapor recovery device or a flare or regenerator firebox/fire tubes, then you must specify the type of control device (s)
and the total number of dehydrators at the facility
that were vented to each type of control device. New

§98 .236(e)(2)(i v) (iv) Whether any dehydrator emission s were vented to a flare or regenerator firebox/fire tubes

. ... New

§98 .236(e)(2)(iv) and (e)(2)(iv) (A) (iv)

... If any dehydrator emission s were vented to a flare or regenerator firebox/fire tubes, then you

must report the information specified in paragraphs (e)(2)(iv)(A) through (e)(2)(iv)(D) of this section.
(A) The total number of dehydrators venting to a flare or regenerator firebox/fire tubes. New

§98 .236(e)(2)(iv)(B) §98 .236 (c) (4)(ii)(D) (B) Annual CO 2 emissions, in metric tons CO 2 , for the dehydrators reported in paragraph (e)(2)( i v)(A) of this section, calculated according to §98 .233(e)(6). Report annual CO 2 , CH 4 , and

N 2 O emissions at the facility
level that resulted from the flaring of process gas,

e xpressed in metric tons CO 2 e for each gas, combined for all glycol dehydrators with annual average daily throughput of
less than 0.4 MMscfd. Current



### 13

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(e)(2)(iv)(C) §98 .236 (c) (4)(ii)(D) (C) Annual CH 4 emissions, in metric tons CH 4 , for
the dehydrators reported in paragraph (e)(2)( i v)(A) of this section, calculated according to §98 .233(e)(6). Report annual CO 2 , CH 4 , and

N 2 O emissions at the facility
level that resulted from the flaring of process gas, expressed in metric tons CO 2 e for each ga s, combined for all glycol dehydrators with annual average daily throughput of
less than 0.4 MMscfd. Current

§98 .236(e)(2)(iv)(D) §98 .236 (c) (4)(ii)(D) (D) Annual N 2 O emissions, in metric tons N 2 O, for the dehydrators reported in paragraph (e)(2)( i v)(A) of this section, calculated according to §98 .233(e)(6). Report annual CO 2 , CH 4 , and

N 2 O emissions at the facility
level that resulted from the flaring of process gas, expressed in metric tons CO 2 e for each gas, combined for all glycol dehydrators wit h annual average daily throughput of
less than 0.4 MMscfd. Current

§98 .236(e)(2)(v) and (e)(2)(v) (A) §98 .236 (c) (4)(ii)(C) (v) For dehydrator emission s that were not vented to a flare or regenerator firebox/fire tubes, report the information specified in paragraphs (e)(2)(v)(A) and (e)(2)(v)(B) of this section.
(A) Annual CO 2 emissions

, in metric tons CO 2 , for emissions from all dehydrators reported in paragraph (e)(2)(i) of this section that were not vented to a flare or regenerator firebox/fire tubes

, calculated according to §98 .233(e)(2), (e)(4), and , if applicable, (e)(5), where emissions are added together for all such dehydrators. Report annual CO 2 and CH 4 emissions at the facility level that resulted from venting gas directly to the atmosphere, expressed in metric tons CO 2 e for each gas, combined for all glycol dehydrators with annual average daily throughput of
less than 0.4 MMscfd. Current



### 14

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(e)(2)(v)(B) §98 .236 (c) (4)(ii)(C) (B) Annual CH 4 emissions

, in metric tons CH 4 , for
emissions from all dehydrators reported in paragraph (e)(2)(i) of this section that were not vented to a flare or regenerator firebox/fire tubes

, calculated according to §98 .233(e)(2), (e)(4), and , if applicable, (e)(5), where emissions are added together for all such d ehydrators. Report annual CO 2 and CH 4 emissions at the facility level that resulted from venting gas directly to the atmosphere, expressed in metric tons CO 2 e for each gas, combined for all glycol dehydrators with annual average daily throughput of
less th an 0.4 MMscfd. Current

§98 .236(e)(3) and (e)(3) (i) §98 .236(c)(4)(iii) (A) (3) For dehydrators that use desiccant (as specified

in §98 .233(e)(3)), you must report the information specified in paragraphs (e)(3)(i) through (e)(3)(iii)
of this section for the entire facility. (i) The same information specified in paragraphs (e)(2)(i) through (e)(2)(iv) of this section for glycol dehydrators, and report the information under this paragraph for dehydrators that use desiccant. (the total number of dehydrators.) C ount of desiccant dehydrators. Current

§98 .236(e)(3) and (e)(3) (i) (3) For dehydrators that use desiccant (as specified
in §98 .233(e)(3)), you must report the information specified in paragraphs (e)(3)(i) through (e)(3)(iii)
of this section for the entir e facility. (i) The same information specified in paragraphs (e)(2)(i) through (e)(2)(iv) of this section for glycol dehydrators, and report the information under this paragraph for dehydrators that use desiccant. (whether any dehydrator emissions were vented to a vapor recovery device). New



### 15

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(e)(3) and (e)(3) (i) (3) For dehydrators that use desiccant (as specified

in §98 .233(e)(3)), you must report the information specified in paragraphs (e)(3)(i) through (e)(3)(iii)
of this section for the entire facility. (i) The same information specified in paragraphs (e)(2)(i) through (e)(2)(iv) of this section for glycol dehydrators, and report the information under this paragraph for dehydrators that use desiccant. (the total number of dehydrators vent ed to a vapor recovery device) New

§98 .236(e)(3) and (e)(3) (i) (3) For dehydrators that use desiccant (as specified
in §98 .233(e)(3)), you must report the information specified in paragraphs (e)(3)(i) through (e)(3)(iii)
of this section for the entire facility. (i) The same information specified in paragraphs (e)(2)(i) through (e)(2)(iv) of this section for glycol dehydrators, and report the information under this paragraph for dehydrators that use desiccant. (whether any dehydrator emissions were vent ed to a control device other than a vapor recovery device or a flare or regenerator firebox/fire tubes, and the control device type). New

§98 .236(e)(3) and (e)(3) (i) (3) For dehydrators that use desiccant (as specified
in §98 .233(e)( 3)), you must report the information specified in paragraphs (e)(3)(i) through (e)(3)(iii)
of this section for the entire facility. (i) The same information specified in paragraphs (e)(2)(i) through (e)(2)(iv) of this section for glycol dehydrators, and report the information under this paragraph for dehydrators that use desiccant. (the number of dehydrators vented to a control device other than a vapor recovery device or a flare or regenerator firebox/fire tubes) New



### 16

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(e)(3) and (e)(3) (i) (3) Fo r dehydrators that use desiccant (as specified

in §98 .233(e)(3)), you must report the information specified in paragraphs (e)(3)(i) through (e)(3)(iii)
of this section for the entire facility. (i) The same information specified in paragraphs (e)( 2)(i) through (e)(2)(iv) of this section for glycol dehydrators, and report the information under this paragraph for dehydrators that use desiccant. (whether any dehydrator emissions are vented to a flare or regenerator firebox/fire tubes.) New

§98 .236(e)(3) and (e)(3) (i) (3) For dehydrators that use desiccant (as specified
in §98 .233(e)(3)), you must report the information specified in paragraphs (e)(3)(i) through (e)(3)(iii)
of this section for the entire facility. (i) The same information specif ied in paragraphs (e)(2)(i) through (e)(2)(iv) of this section for glycol dehydrators, and report the information under this paragraph for dehydrators that use desiccant. ( the total number of dehydrators venting to a flare or regenerator firebox/fire tubes .) New

§98 .236(e)(3) and (e)(3) (i) §98 .236 (c) (4)(iii)(B) (3) For dehydrators that use desiccant (as specified
in §98 .233(e)(3)), you must report the information specified in paragraphs (e)(3)(i) through (e)(3)(iii)
of this section for the entire facility. (i) The same information specified in paragraphs (e)(2)(i) through (e)(2)(iv) of this section for glycol dehydrators, and report the information under this paragraph for dehydrators that use desiccant. ( Annual CO 2 emissions for the dehydrators v enting
to a flare or firebox/fire tubes ) Report annual CO 2 and CH 4 emissions at the facility level, expressed in metric tons CO 2 e for each gas, for all absorbent desiccant dehydrators
combined. Current



### 17

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(e)(3) and (e)(3) (i) §98 .236 (c) (4)(iii)(B) (3) For dehydrators that use desiccant (as specified

in §98 .233(e)(3)), you must report the information specified in paragraphs (e)(3)(i) through (e)(3)(iii)
of this section for the entire facility. (i) The same information specified in paragraphs (e)(2)(i ) through (e)(2)(iv) of this section for glycol dehydrators, and report the information under this paragraph for dehydrators that use desiccant. ( Annual CH 4 emissions for the dehydrators venting
to a flare or firebox/fire tubes .) Report annual CO 2 and CH 4 emissions at the facility level, expressed in metric tons CO 2 e for each gas, for all absorbent desiccant dehydrators
combined. Current

§98 .236(e)(3) and (e)(3) (i) §98 .236 (c) (4)(iii)(B) (3) For dehydrators that use desiccant (as specified
in §98 .233(e)( 3)), you must report the information specified in paragraphs (e)(3)(i) through (e)(3)(iii)
of this section for the entire facility. (i) The same information specified in paragraphs (e)(2)(i) through (e)(2)(iv) of this section for glycol dehydrators, and report the information under this paragraph for dehydrators that use desiccant. ( Annual N 2 O emissions for the dehydrators venting
to a flare or firebox/fire tubes .) Report annual CO 2 and CH 4 emissions at the facility level, expressed in metric tons CO 2 e fo r each gas, for all absorbent desiccant dehydrators
combined. Current

§98 .236(e)(3)(ii) §98 .236 (c) (4)(iii)(B) (ii) Annual CO 2 emissions

, in metric tons CO 2 , for emissions from all desiccant dehydrators reported under paragraph (e)(3)(i) of this section that are not venting to a flare or regenerator firebox/fire tubes, calculated according to §98 .233(e)(3), (e)(4), and , if applicable, (e)(5), and summing for all such dehydrators. Report annual CO 2 and CH 4 emissions at the facility level, expressed in metric tons CO 2 e for each gas, for all absorbent desiccant dehydrators
combined. Current



### 18

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(e)(3)(iii) §98 .236 (c) (4)(iii)(B) (iii) Annual CH 4 emissions

, in metric tons CH 4 , for emissions from all desiccant dehydrators reported in paragraph (e)(3)(i) of this section that are not venting to a flare or regenerator firebox/fire tubes, calculated according to §98 .233(e)(3), (e)(4), and , if applicable, (e)(5), and summing for all such dehydrators. Report annual CO 2 and CH 4 emissions at the facility level, expressed in metric tons CO 2 e for each gas, for all absorbent desiccant dehydrators
combined. Current

Liquids Unloading

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

... New

§98 .236(f) (f) ... Indicate which methods (as specified in §98 .233(f)) were used to calculate emissions

. ... New

§98 .236(f)

, (f) (1)

, and (f)(1) (i) (f) ... If your facility performs well venting for liquids unloading and uses Calculation Method 1,
then you must report the information specified in paragraph (f)(1) of this section

. ... (1) For each s ub

- basin and well tubing diameter and pressure group for which you used Calculation Method 1 to calculate natural gas emissions from well venting for liquids unloading, report the information specified in paragraphs (f)(1)(i) through (f)(1)(xi i ) of this section. Report information separately for wells with plunger lifts
and we lls without plunger lifts.
(i) Sub

- basin ID. New

§98 .236(f)(1)(ii) (ii) Well tubing diameter and pressure group ID. New

§98 .236(f)(1)(iii) §98 .236(c)(5)(i)(B) (iii) Plunger lift indicator. Count of plunger lifts. Whether
the selected well from the tubing diameter and pressure group combination had a plunger lift (yes/no). Current



### 19

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(f)(1)(iv) §98 .236(c)(5)(i)(A) (iv) C ount of wells vented to the atmosphere for the
sub

- basin/well tubing diameter and pressure group

. Count of wells vented to the atmosphere for liquids unloading. Revised

§98 .236(f)(1)(v) (v) Percentage of wells for which the monitoring period used to determine the cumulative amount of time venting was not the full calendar year. New

§98 .236(f)(1)(v i ) (vi) Cumulative amount of time wells were vented (sum of “T p ” from Equation W

- 7 A or W

- 7 B of this subpart)

, in hours. New

§98 .236(f)(1)(vi i ) §98 .236(c)(5)(i)(C) (vii) Cumulative number of unloadings vented to the atmosphere for each well, aggregated across all
wells in the sub

- basin/well tubing diameter and

pressure group

. Cumulative number of unloadings vented to the atmosphere. Current

§98 .236(f)(1)(vii i ) (viii) A nnual natural gas emissions, in standard cubic feet, from well venting for liquids unloading,
calculated acco rding to §98 .233(f)(1). New

§98 .236(f)(1)( ix ) §98 .236(c)(5)(i)(H) (ix) A nnual CO 2 emission s , in metric tons CO 2 , from well venting for liquids unloading, calculated according to §98 .233(f)(1) and §98 .233(f)(4). Report annual CO 2 and CH 4 emissions, expressed in metric
tons CO 2 e for each gas. Current

§98 .236(f)(1)(x) §98 .236(c)(5)(i)(H) (x) A nnual CH 4 emissions, in metric tons CH 4 , from well venting for liquids unloading, calculated according to §98 .233(f)(1) and §98 .233(f)(4). Report annual CO 2 and CH 4 emissions, expressed in metric
tons CO 2 e for each gas. Current

§98 .236(f)(1)(x i ) and (f)(1)(xi) (A) (xi) For each well tubing diameter group and pressure group combination, you must report the information specified in paragraphs (f)(1)( xi)(A) through (f)(1)(xi)(E) of this section for each individual well not using a plunger lift that was tested during the year.
(A) API number of tested well. New



### 20

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(f)(1)(x i )(B) §98 .236(c)(5)(i)(F) (B) Casing pressure, in pounds per square inch
absolute

. Casing pressure, in psia, of each well selected to represent emissions in that tubing size group and pressure group
combination that does not have a plunger lift. Current

§98 .236(f)(1)(x i )( C ) §98 .236(c)(5)(i)(E) (C) Internal casing diameter, in inches. Internal casing diameter or internal tubing diameter in inches, where applicable, . . .selected to represent emissions in that tubing size and pressure
combination. Current

§98 .236(f)(1)(x i ) (D) §98 .236(c)(5)(i)(E) (D) Measured d epth of the well

, in feet. . . . well depth of each well, in feet, selected to represent emissions in that tubing size and pressure combination. Current

§98 .236(f)(1)(x i )(E) §98 .236(c)(5)(i)(D) (E) Average flow rate of the well venting over the duration of the liquids unloading, in standard cubic feet per hour. Average flow rate of the measured well venting in cubic feet per hour (refer to §98 .233(f)(1)(i)(A)). Current

§98 .236(f)(1)(xi i) and (f)(1)(xii )(A) (xii) For each well tubing diameter group and

pressure group c ombination, you must report the information specified in paragraphs (f)(1)(xii)(A) through (f)(1)(xii)(E) of this section for each individual well using a plunger lift that was tested during the year.
(A) The API well number. New

§98 .236(f)(1)(xi i )(B) §98 .236(c)(5)(i)(G) (B) The tubing pressure, in pounds per square inch
absolute

. Tubing pressure, in psia, of each well selected to represent emissions in a tubing size group and pressure group combination that has a plunger
lift. Current



### 21

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(f)(1)(xi i )(C) §98 .236(c)(5)(i)(E) (C) The internal tubing diameter, in inches. Internal casing diameter or internal tubing diameter in inches, where applicable,

. .

. selected to represent emissions in that tubing size and pressure
combination. Current

§98 .236(f)(1)(x i i) ( D) §98 .236(c)(5)(i)(E) (D) Measured depth of the well, in feet. . . .well depth of each well, in feet, selected to represent emissions in that tubing size and pressure combination. Current

§98 .236(f)(1)(xi i )(E) §98 .236(c)(5)(i)(D) (E) Average flow rate of the well venting over the duration of the liquids unloading, in standard cubic feet per hour. Average flow rate of the measured well venting in cubic feet per hour (refer to §98 .233(f)(1)(i)(A)). Current

§98 .236(f)

, (f) (2)

, and (f)(2) (i) (f)

... If the facility performs liquids unloading and uses Calculation Method 2 or 3, then you must report the information specified in paragraph (f)(2)
of this section.
(2) For each s ub

- basin for which you used
Calculation Method 2 or 3 ( as specified in §93.233(f) ) to calculate natural gas emissions from well venting for liquids unloading, you must report the information in (f)(2)(i) through (f)(2)(x) of this section. Report information separately for each
calculation method.
(i) Sub

- basin ID

. New

§ 98 .236(f)(2)(ii) (ii) Calculation m ethod

. New

§98 .236(f)(2)(i ii ) §98 .236(c)(5)(ii)(B) (iii) Plunger lift indicator. Count of plunger lifts. Current

§98 .236(f)(2)(i v ) §98 .236(c)(5)(ii)(A) (iv) Number of wells vented to the atmosphere. Count of wells vented to the atmosphere for liquids unloading. Current



### 22

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(f)(2)( v ) §98 .236(c)(5)(ii)(C) (v) Cumulative number of unloadings vented to the atmosphere for each well, aggregated across all
wells. Cumulative number of unloadings vented to the atmosphere. Current

§98 .236(f)(2)( v i) (vi) A nnual natural gas emissions, in standard cubic feet, from well venting for liquids unloading, calculated according to §98 .233(f)(2) or §98 .233(f)(3), as applicable. New

§98 .236(f)(2)( vi i) §98 .236(c)(5)(ii)(E) (vii) A nnual CO 2 emission s , in metric tons CO 2 , from well venting for liquids unloading, calculated according to §98 .233(f)(2) or §98 .233(f)(3), as applicable, and §98 .233(f)(4). Report annual CO 2 and CH 4 emissions, expressed in metric
tons CO 2 e for each GHG gas. Current

§98 .236(f)(2)( v ii i) §98 .236(c)(5)(ii)(E) (viii) A nnual CH 4 emissions, in metric tons C H 4 , from well venting for liquids unloading, calculated according to §98 .233(f)(2) or §98 .233(f)(3), as applicable, and §98 .233(f)(4). Report annual CO 2 and CH 4 emissions, expressed in metric
tons CO 2 e for each GHG gas. Current

§98 .236(f)(2)(ix) §98 .236(c)(5)(ii) (D) (ix) For wells without plunger lifts, the average internal casing diameter, in inches. Average internal casing diameter, in inches, for all wells, where applicable. Current

§98 .236(f)(2)(x) §98 .236(c)(5)(i)(E) (x) For wells with plunger lifts, the average internal tubing diameter, in inches. Internal casing diameter or
internal t ubing diameter in inches, where applicable, and well depth of each well, in feet, selected to represent emissions in that tubing size and pressure
combination. Current

Completions and Workovers with Hydraulic Fracturing

§98 .236(g) (g) You must indicate whether your facility had any gas well completions or workovers with hydraulic fracturing during the calendar year

. ... New



### 23

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(g) and (g) (1) (g)

... If your facility had gas well completions or workovers with hydraulic fracturing during the calendar year , then you must report information specified in paragraphs (g)(1) through (g)( 10 ) of this section, for each sub

- basin and well type combination. Report information separately for completions and workovers.
(1) Sub

- basin ID. New

§98 .236(g)(2) (2) Well type combination

. New

§98 .236(g)(3) §98 .236(c)(6)(i)(A) and (C) (3) Number of completions or workovers in the sub

basin and well type combination category. (A)Total count of completions in calendar year.
(C) Total count of workovers in calendar year that flare gas or vent gas to the atmosphere. Current

§98 .236(g)(4) (4) Calculation method used

. New



### 24

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(g)(5) and (g)(5) (i) §98 .236(c)(6)(i)(E) and (F) (5) If you used Equation W

- 10A to calculate annual volumetric total gas emissions, then you must report the information specified in paragraphs (g)(5)(i) and (g)(5)(ii) of this section.
(i) Cumulative gas flowback time , in hours, from when gas is first detected until sufficient quantities are present to enable separation, and the cumulative flowback time, in hours, after sufficient quantities of gas are present to enable separation ( sum of

“T p ,i ” and sum of “T p , s ” values used in E quation W

10A). You may delay reporting of this data element if you indicate in the annual report that wildcat wells and/or delineation wells are the only wells
included in this number . If you elect to delay reporting of this data element, you must report by the date specified in §98.236(cc) the total number of hours of flowback from all wells during well completions or workovers and the API W ell

N umber(s) for the wells included in the number

. (E) When using Equation W

10A, total number of days of
backflow from all wells during completions. (F) When using Equation W

10A, total number of days of backflow from all wells during
workovers. Revised

§98 .236(g)(5)(ii) §98 .236(c)(6)(i)(B) and (D) (ii) For the measured well(s), the flowback rate, in standard cubic feet per hour ( average of “FR s,p ”
values used in Equation W

- 12 A ). You may delay reporting of this data element if you indicate in the annual report that wildcat wells and/or delineation wells are the only wells that that can be use d for the

measurement . If you elect to delay reporting of this data element, you must report by the date specified in §98.236(cc) the measured flowback rate during well completion or workover and the API W ell

N umber(s) for the wells included in the

measure ment. (B) When using Equation W

10A, measured flow rate of backflow during well completion in standard cubic feet per hour. (D) When using Equation W

10A, measured flow rate of backflow during well workover in standard cubic feet per hour. Current



### 25

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(g)(6) (i) (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 information specified in paragraphs (g)(6)(i) and (g)(6)(ii) of this section.
(i) V e nted natural gas volume, in standard cubic feet, for each well in the sub

- basin (“FV s,p ” in Equation W

- 10B). New

§98 .236(g)(6) (ii) (ii) Flow rate at the beginning of time when sufficient quantities of gas are present to enable separation, in standard cubic feet per hour, for each
well in the sub

- basin (“FR p,i ” in Equation W

- 10B). New

§98 .236(g)(7) (7) Annual gas emissions, in standard cubic feet (“E s,n ” in Equation W

- 10 A or W

- 10 B ). New

§98 .236(g)(8) §98 .236(c)(6)(i)(I) and (J) (8) Annual CO 2 emissions, in metric tons CO 2

. (I) Annual CO 2 and CH 4 emissions that resulted from venting gas directly to the atmosphere, expressed in
metric tons CO 2 e for each gas.(J) Annual CO 2 , CH 4 , and

N 2 O emissions that resulted from flares, expressed in metric

ton s CO 2 e for each gas. Current

§98 .236(g)(9) §98 .236(c)(6)(i)(I) and (J) (9) Annual CH 4 emissions, in metric tons CH 4

. (I) Annual CO 2 and CH 4 emissions that resulted from venting gas directly to the atmosphere, expressed in
metric tons CO 2 e for each gas.
(J) Annual CO 2 , CH 4 , and N 2 O
emissions that resulted from flares, expressed in metric tons
CO 2 e for each gas. Current



### 26

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(g)(10) §98 .236(c)(6)(i)(J) (10) If the well emissions were vented to a flare, then you must report the total N 2 O emissions, in

m etric tons N 2 O

. (I) Annual CO 2 and CH 4 emissions that resulted from venting gas directly to the atmosphere, expressed in
metric tons CO 2 e for each gas.
(J) Annual CO 2 , CH 4 , and N 2 O
emissions that resulted from flares, expressed in metric tons
CO 2 e for each gas. Current

N/A 1 §98 .236(c)(6)(i)( G) N/A Report number of completions employing purposely designed equipment that separates natural gas from the backflow and the amount of natural gas, in standard cubic feet, recovered using engineering
estimate based o n best
available. Current

N/A §98 .236(c)(6)(i)( H ) N/A Report number of workovers employing purposely designed equipment that separates natural gas from the backflow and the amount of natural gas, in standard cubic feet, recovered using engineering
estimate based on best
available data. Current

1 “N/A” means the reporting provision in the subpart W 2010 final rule was deleted in the 2014 amendments.



### 27

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

Completions and Workovers without Hydraulic Fracturing

§98 .236(h) (h) You must indicate 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

. ... New

§98 .236(h)

, (h) (1)

, and (h)(1) (i) (h)

... If the facility had gas well completions or workovers without hydraulic fracturing, then you must report the information specified in paragraphs (h)(1) through (h)(4) of this section, as applicable.
(1) For each s ub

- basin with gas well completions without hydraulic fracturing and without flaring, report the information specified in paragraphs (h)(1)(i) through (h)(1)(vi) of this section.
(i) Sub

- basin ID

. New

§98 .236(h)(1)(ii) §98 .236(c)(6)(ii)(A) (ii) Number of well completions that vented gas directly to the atmosphere without flaring. Total count of completions in calendar year. Revised

§98 .236(h)(1)(iii) §98 .236(c)(6)(ii)(C) (iii) Total number of hours that gas vented directly to the atmosphere during venting for all completions in the sub

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

- 13 B ). Total number of days of gas venting to the atmosphere during backflow for completi on. Current



### 28

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(h)(1)(iv) (iv) 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 ” used in Equation W

- 13 B ). You may delay reporting of this data element if you indicate in the annual report that wildcat wells and/or delineation wells are the only wells that can be used for measurement . If you elect to delay reporting of this data element, you must report by
the date specified in §98.236(cc) the measured average daily gas production rate for all wells during completions and the API W ell N umber(s)
for the wells included in the measurement. New

§98 .236(h)(1)(v) §98 .236(c)(6)(ii)(D) (v) Annual CO 2 emissions, in metric tons CO 2 , that resulted from completions venting gas directly to the atmosphere (“E s,p ” from Equation W

- 13 B for completions that vented directly to the atmosphere,
converted to mass emissions according to §98 .233(h)(1)). (D) Annual CO 2 and CH 4 emissions that resulted from venting gas directly to the atmosphere, expressed in
metric tons CO 2 e for each gas. Current

§98 .236(h)(1)(vi) §98 .236(c)(6)(ii)(D) (vi) Annual CH 4 emissions, in metric tons CH 4 , that resulted from completions venting gas directly to the atmosphere (E s,p from Equation W

- 13 B for completions that vented directly to the atmosphere,
converted to mass emissions according to §98 .233(h)(1) )

. (D) Annual CO 2 and CH 4 emissions that resulted from venting gas directly to the atmosphere, expressed in
metric tons CO 2 e for each gas. Current

§98 .236(h)(2) and (h)(2) (i) (2) For each s ub

- basin with gas well completions without hydraulic fracturing and with flaring, report the information specified in paragraphs (h)(2)(i) through (h)(2)(vii) of this section.
(i) Sub

- basin ID. New

§98 .236(h)(2)(ii) §98 .236(c)(6)(ii)(A) (ii) Number of well completions that flared gas. Total count of completions in calendar year. Revised



### 29

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

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

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

- 13 B ). New

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

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

- 13 B ). You may delay reporting of this data element if you
indicate in the ann ual report that wildcat wells and/or delineation wells are the only wells that can be used for the measurement . If you elect to delay reporting of this data element, you must report by the date specified in §98.236(cc) the measured average daily gas produc tion rate for all wells during completions and the API W ell N umber(s)
for the wells included in the measurement. New

§98 .236(h)(2)(v) §98 .236(c)(6)(ii)(E) (v) Annual CO 2 emissions, in metric tons CO 2 , that resulted from completions that flared gas calcul ated according to §98 .233(h)(2). Annual CO 2 , CH 4 , and N 2 O
emissions that resulted from flares, expressed in metric tons
CO 2 e for each gas. Current

§98 .236(h)(2)(vi) §98 .236(c)(6)(ii)(E) (vi) Annual CH 4 emissions, in metric tons CH 4 , that resulted from completions that flared gas calculated according to §98 .233(h)(2). Annual CO 2 , CH 4 , and N 2 O
emissions that resulted from flares, expressed in metric tons
CO 2 e for each gas. Current

§98 .236(h)(2)(vii) §98 .236(c)(6)(ii)(E) (vii) Annual N 2 O emissions, in metric tons N 2 O, that resulted from completions that flared gas
calculated according to §98 .233(h)(2). Annual CO 2 , CH 4 , and N 2 O
emissions that resulted from flares, expressed in metric tons
CO 2 e for each gas. Current



### 30

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(h)(3) and (h)(3) (i) (3) For each s ub

- basin with gas well workovers without hydraulic fracturing and without flaring, report the information specified in paragraphs (h)(3)(i) through (h)(3)(iv) of this section.
(i) Sub

- basin ID. New

§98 .236(h)(3)(ii) §98 .236(c)(6)(ii)(B) (ii) Number of workovers that vented gas to the atmosphere without flaring. Total count of workovers in calendar year that flare gas or vent gas to the atmosphere. Current

§98 .236(h)(3)(iii) §98 .236(c)(6)(ii)(D) (iii) Annual CO 2 emissions, in metric tons CO 2 per year, that resulted from workovers venting gas directly to the atmosphere (“E s,wo ” in Equation W

13 A for workovers that vented directly to the atmosphere, converted to mass emissions as specified in §98 .233(h)(1)). Annual CO 2 and CH 4 emissions that resulted from venting gas directly to the atmosphere , expressed in
metric tons CO 2 e for each gas. Current

§98 .236(h)(3)(iv) §98 .236(c)(6)(ii)(D) (iv) Annual CH 4 emissions, in metric tons CH 4 per year, that resulted from workovers venting gas directly to the atmosphere (“E s,wo ” in Equation W

13 A for workovers that vented directly to the atmosphere, converted to mass emissions as specified in §98 .233(h)(1)). Annual CO 2 and CH 4 emissions that resulted from venting gas direct ly to the atmosphere , expressed in
metric tons CO 2 e for each gas. Current

§98 .236(h)(4) and (h)(4) (i) (4) For each s ub

- basin with gas well workovers without hydraulic fracturing and with flaring, report the information specified in paragraphs (h)(4)(i) through (h)(4)(v) of this section.
(i) Sub

- basin ID. New

§98 .236(h)(4)(ii) §98 .236(c)(6)(ii)(B) (ii) Number of workovers that flared gas

. Total count of workovers in calendar year that flare gas or vent gas to the atmosphere. Current

§98 .236(h)(4)(iii) §98 .236(c)(6)(ii)(E) (iii) Annual CO 2 emissions, in metric tons CO 2 per year, that resulted from workovers that flared gas calculated as specified in §98 .233(h)(2). Annual CO 2 , CH 4 , and N 2 O
emissions that resulted from flares, expressed in metric tons
CO 2 e for each gas. Current



### 31

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(h)(4)(iv) §98 .236(c)(6)(ii)(E) (iv) Annual CH 4 emissions, in metric tons CH 4 per year, that resulted from workovers that flared gas, calculated as specified in §98 .233(h)(2). Annual CO 2 , CH 4 , and N 2 O
emissions that resulted from flares, expressed in metric tons
CO 2 e for each gas. Current

§98 .236(h)(4)(v) §98 .236(c)(6)(ii)(E) (v) Annual N 2 O emissions, in metric tons N 2 O per year, that resulted from workovers that flared gas calculated as specified in §98 .233(h)(2). Annual CO 2 , CH 4 , and N 2 O
emissions that resulted from flares, expressed in metric tons
CO 2 e for each gas. Current

Blowdown Vent Stacks

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

. ... New

§98 .236(i) (i )

... If your facility has blowdown vent stacks, then you must report whether emissions were calculated by equipment or event type or by using
flow meters or a combination of both

. ... New

§98 .236(i) and (i) (1) (i)

... If you calculated emissions by equipment or

event type for any blowdown vent stacks

, then you must report the information specified in paragraph (i)(1) of this section considering, in aggregate, all
blowdown vent stacks for which emissions were calculated by equipment or event type

. ... (1) If you calculated emissions from any blowdown vent stacks by the seven categories listed in §98.233(i )(2), then you must report the equipment

or event types

... New



### 32

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(i)(1) and §98.236(i)(1) (i) (1)

... the information specified in paragraphs (i)(1)(i) through (i)(1)(iii) of this section for each equipment or event type. If a blowdown event resulted in emissions from multiple equipment
types, and the emissions cannot be apportioned to the different equipment types, then you may report
the information in paragraphs (i)(1)(i) through (i)(1)(iii) of this section for the equipment type that represented the largest portion of the emissions for
the blowdown event.
(i) Total number of blowdowns in the calendar year for the equipment or event type ( the sum of

equ ation variable “N” from Equation W

- 14A or Equation W

- 14B of this subpart

, for all unique physical volumes for the equipment or event type). New

§98 .236(i)(1)(ii) (ii) Annual CO 2 emissions for the equipment or

event type, in metric tons CO 2 , as calculated according to §98 .233(i)(2)(iii). New

§98 .236(i)(1)(iii) (iii) Annual CH 4 emissions for the equipment or

event type, in metric tons CH 4 , as calculated according to §98 .233(i)(2)(iii). New



### 33

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236 (i), (i)(2)

, and (i)(2) (i) (i) ...If you calculated emissions using flow meters for any blowdown vent stacks, then you must report the information specified in paragraph (i)(2) of this
section.
(2) If you elect to calculate emissions from blowdown vent stacks by using a flow meter according to §98 .233(i)(3), then you must report the information specified in paragraphs (i)(2)(i) and (i)(2)(ii) of this section for the facility.
(i) Annual CO 2 emissions from all blowdown vent
stacks at the facility for which emissions were calculated using flow met ers , in metric tons CO 2 ( the sum of all CO 2 mass emission values calculated according to §98 .233(i)(3) for all flow meters). New

§98 .236(i)(2)(ii) (ii) Annual CH 4 emissions from all blowdown vent
stacks at the facility for which emissions were calculated using flow meters , in metric tons CH 4 ( the sum of all CH 4 mass emissions values calculated according to §98 .233(i)(3) for all flow meters). New

N/A §98.236(c)(7)(i)(A) N/A Total number of blowdowns for each unique phy sical volume in the calendar year. Current

N/A §98.236(c)(7)(i)(B) N/A Annual CO 2 and CH 4 emissions, for each unique physical blowdown volume, expressed in metric tons CO 2 e for each gas. Current

N/A §98.236(c)(7)(i)(C) N/A A unique name or ID number
for the unique physical volume. Current



### 34

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

N/A §98.236(c)(7)(ii)(A) N/A Total number of blowdowns for all unique physical volumes in the calendar year. Current

N/A §98.236(c)(7)(ii)(B) N/A Annual CO 2 and CH 4 emissions from all unique physical volumes as an aggregate per facility, expressed in metric tons CO 2 e for each gas. Current

Onshore Production Storage Tanks

§98 .236(j) (j) You must indicate whether your facility sends produced oil to atmospheric tanks.

... New

§98 .236(j) (j) ... If your facility sends produced oil to atmospheric tanks, then you must indicate which Calculation Method(s) you used to calculate GHG
emissions and you must report the information specified in paragraphs (j)(1) and (j)(2) of this section as applicable.

... New

§98 .236(j) (j) ... If you used Calculation Method 1 or Calculation Method 2, and any atmospheric tanks

were observed to have malfunctioning dump valves during the calendar year

, then you must indicate that dump valves were malfunctioning and you must report the information specified in paragraph (j)(3) of this section.

... New

§98 .236(j)(1) and (j)(1) (i) (1) If you used Calculation Method 1 or Calculation Method 2 to calculate GHG emissions, then you

must report the information specified in paragraphs (j)(1)(i) through (j)(1)( xiv ) of this section for each
sub

- basin, and by calculation method.
(i) Sub

- basin ID. New



### 35

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(j)(1)(ii) (ii) Calculation method used, and name of the software package used if using Calculation Method
1. New

§98 .236(j)(1)(iii) §98 .236(c)(8)(i)(F) and §98 .236(c)(8)(i i)(A ) (iii) The total annual oil volume from gas

- liquid separators and direct from wells that is sent to applicable onshore production storage tanks, in
barrels. You may delay reporting of this data element if you indicate in the annual report that
wildcat wells and delineation wells are the onl y wells in the sub

- basin with oil production greater than or equal to 10 barrels per day and flowing to

gas

- liquid separators or directly to storage tanks . If you elect to delay reporting of this data element, you must report by the date specified in §98.236(cc)
the total volume of oil from all separators and wells sent to tank(s) and the API Well Number(s) for the
wells included in this volume. (i)(F) Tota l volume of oil from all wellhead separators sent to tank(s) in barrels per year.
(ii)(A) Total volume of sales oil from all wells in barrels per

year. Current

§98 .236(j)(1)(iv) §98 .236(c)(8)(i)(B) (iv) The average gas

- liquid separator temperature,

in degrees Fahrenheit

. Estimated average separator temperature, in degrees Fahrenheit, Current

§98 .236(j)(1)(v) §98 .236(c)(8)(i)( B ) (v) The average gas

- liquid separator pressure, in pounds per square inch gauge

. Estimated average separator . .
. estimated average pressure, in psig. Current

§98 .236(j)(1)(vi) §98 .236(c)(8)(i)(C ) (vi) The average sales oil or stabilized oil API gravity, in degrees. Estimated average sales oil stabilized API gravity, in degrees. Current

§98 .236(j)(1)(vii) §98 .236(c)(8)(i)(I) (vii) The minimum and maximum concentration (mole fraction) of CO 2 in flash gas from onshore production storage tanks. Range of concentrations of flash gas, CH 4 and CO 2. Current

§98 .236(j)(1)(viii) §98 .236(c)(8)(i)(I ) (viii) The minimum and maximum concentration (mole fraction) of CH 4 in flash gas from onshore production storage tanks. Range of concentrations of flash gas, CH 4 and CO 2. Current



### 36

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(j)(1)(ix) §98 .236(c)(8)(i)(A)

, §98.236(c)(8)(ii)(B)

, and §98.236(c)(8)(ii)(C) (ix) The number of wells sending oil to gas

- liquid separators or directly to atmospheric tanks. (i)(A) Number of wellhead separators sending oil to atmospheric tanks.
(ii)(B) Total number of wells sending oil directly to tanks.
(ii)(C) Total number of wells sending oil to separators off the well pads. Current

§98 .236(j)(1)(x) §98 .236(c)(8)(i)(D)
and §98.236(c)(8)(ii)(E) (x) The number of atmospheric tanks. (i)(D) Count of hydrocarbon tanks at well pads.
(ii)(E) Count of hydrocarbon tanks on wellpads. Current

§98 .236(j)(1)(xi) §98 .236(c)(8)(i)(E) (xi) An estimate of the number of atmospheric tanks, not on well

- pads, receiving your oil. Best estimate of count of stock tanks not at well pads receiving your oil. Current

§98 .236(j)(1)(xii)(A) §98 .236(c)(8)(i)(G) (xii ) If any emissions from of the atmospheric tanks at your facility were controlled with vapor recovery
systems, then you must indicate and report the information specified in paragraphs (j)(1)(xii)(A) through (j)(1)(xii)(E) of this section.
(A) The number of atmospheric tanks that control emissions with vapor recovery systems. Count of tanks with emissions control measures, either vapor recovery system or flaring, for tanks at well pads. Current



### 37

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(j)(1)(xii)(B) §98 .236(c)(8)(i)(K) (B) Total CO 2 mass, in metric tons CO 2 , that was recovered during the calendar year using a vapor
recovery system. Annual CO 2 and CH 4 gas quantities that were recovered, expressed in metric tons CO 2 e for each gas, for all wellhead

gas

- liquid separators or storage
tanks using Calculation Methodology 1, and for all wellhead gas

- liquid separators or storage tanks using Calculation Methodology 2 of §98 .233(j). Current

§98 .236(j)(1)(xii)(C) §98 .236(c)(8)(i)(K) (C) Total CH 4 mass, in metric tons CH 4 , that w as recovered during the calendar year using a vapor
recovery system. Annual CO 2 and CH 4 gas quantities that were recovered, expressed in metric tons CO 2 e for each gas, for all wellhead

gas

- liquid separators or storage tanks using Calculation Methodology 1, and for all wellhead gas

- liquid separators or storage tanks using Calculation Methodology 2 of §98 .233(j). Current

§98 .236(j)(1)(xii)(D) §98 .236(c)(8)(i)(J) (D) Annual CO 2 emissions, in metric tons CO 2 , from atmospheric tanks equipped with vapor
recovery systems. Annual CO 2 and CH 4 emissions that resulted from venting gas to the atmosphere, expressed in metric tons CO 2 e for each gas, for all wellhead

gas

- liquid separators or storage tanks using Calculation Methodology 1, and for all wellhead gas

- liquid separators

o r storage tanks using Calculation Methodology 2 of §98 .233(j). Current



### 38

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(j)(1)(xii)(E) §98 .236(c)(8)(i)(J) (E) Annual CH 4 emissions, in metric tons CH 4 , from atmospheric tanks equipped with vapor
recovery systems. Annual CO 2 and CH 4 emissions that resulted from venting gas to the atmosphere, expressed in metric tons CO 2 e for each gas, for all wellhead

gas

- liquid separators or storage tanks using Calculation Methodology 1, and for all wellhead gas

- liquid separators or storage tanks us ing Calculation Methodology 2 of §98 .233(j). Current

§98 .236(j)(1)(xiii) and (j)(1)(xiii) (A) §98 .236(c)(8)(i)(G) (xiii) If any atmospheric tanks at your facility vented gas directly to the atmosphere without using a vapor recovery system or without flaring, then
you must r eport the information specified in paragraphs (j)(1)(xiii)(A) through (j)(1)(xiii)(C) of
this section. (A) The number of atmospheric tanks that vented gas directly to the atmosphere without using a vapor
recovery system or without f laring. Count of tanks with emissions control measures, either vapor recovery system or flaring, for tanks at well pads. Current

§98 .236(j)(1)(xiii) (B) §98 .236(c)(8)(i)(J) (B) Annual CO 2 emissions, in metric tons CO 2 , that resulted from venting gas directly to the atmosphere. Annual CO 2 and CH 4 emissions that resulted from venting gas to the atmosphere, expressed in metric tons CO 2 e for each gas, for all wellhead

gas

- liquid separators or storage tanks using Calculation Methodology 1, and for all
wel lhead gas

- liquid separators or storage tanks using Calculation Methodology 2 of §98 .233(j). Current



### 39

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(j)(1)(xiii) (C) §98 .236(c)(8)(i)(J) (C) Annual CH 4 emissions, in metric tons CH 4 , that resulted from venting gas directly to the atmosphere. Annual CO 2 and CH 4 emissions that resulted from venting gas to the atmosphere, expressed in metric tons CO 2 e for each gas, for all wellhead

gas

- liquid separators or storage tanks using Calculation Methodology 1, and for all wellhead gas

- liquid separators

or stor age tanks using Calculation Methodology 2 of §98 .233(j). Current

§98 .236(j)(1)(xiv ) and (j)(1)(xiv) (A) §98 .236(c)(8)(i)(G) (xiv) If you controlled emissions from any atmospheric tanks at your facility with one or more flares, then you must report the information specified in paragraphs (j)(1)(xiv)(A) through (j)(1)(xiv)(D) of this section. (A) The number of atmospheric tanks that
control led emissions with flares. Count of tanks with emissions control measures, either vapor
recovery system o r flaring, for tanks at well pads. Current

§98 .236(j)(1)(xiv ) (B) §98 .236(c)(8)(i)(L) (B) Annual CO 2 emissions, in metric tons CO 2 , from atmospheric tanks that control led emissions
with one or more flares. Annual CO 2, CH 4, and N 2 O
emissions that resulted from flaring gas, expressed in metric
tons CO 2 e for each gas, for all wellhead gas

- liquid separators or storage tanks using Calculation Methodology 1, and for all wellhead gas

- liquid separators or storage tanks using Calculation Methodology
2 of §98 .233(j)

. Current



### 40

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(j)(1)(xiv ) (C) §98 .236(c)(8)(i)(L) (C) Annual CH 4 emissions, in metric tons CH 4 , from atmospheric tanks that control led emissions
with one or more flares. Annual CO 2, CH 4, and N 2 O
emissions that resulted from flaring gas, expressed in metric
tons CO 2 e for each gas, for all wellhead gas

- liquid separators or storage tanks using Calculation Methodology 1, and for all wellhead gas

- liquid separators or storage tanks using Calculation Methodology
2 of §98 .233(j). Current

§98 .236(j)(1)(xiv ) ( D) §98 .236(c)(8)(i)(L) (D) Annual N 2 O emissions, in metric tons N 2 O, from atmospheric tanks that control led emissions
with one or more flares. (I) Annual CO 2, CH 4, and N 2 O
emissions that resulted from flaring gas, expressed in metric
tons CO 2 e for each gas, for all wellhead gas

- liquid separators or storage tanks using Calculation Methodology 1, and for all wellhead gas

- liquid separators or storage tanks using Calculation Methodology
2 of §98 .233(j). Current



### 41

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(j)(2) and (j)(2) (i) and (j)(2)(i) (A) §98 .236(c)(8)(iii)(C) (2) If you used Calculation Method 3 to calculate GHG emissions, then you must report the information specified in paragraph s (j)(2)(i) through (j)(2)(iii) of this section

. (i) Report the information specified in par agraphs (j)(2)(i)(A) through (j)(2)(i)(F) of this section at the basin level for atmospheric tanks where emissions
were calculated using Calculation Method 3. (A) The total annual oil throughput that is sent to atmospheric tanks in the basin , in barrels. Y ou may delay reporting of this data element if you indicate in the annual report that wildcat wells and delineation wells are the only wells in the sub

- basin with oil production less than 10 barrels per day and that send oil to atmospheric tanks. If you el ect to delay reporting of this data element, you must report by the date specified in §98.236(cc) the total annual oil throughput from all wells sent to the tank(s) and the API W ell N umber(s) for the wells
included in this volume

. Total volume of oil produ ction in barrels per year. Revised

§98 .236(j)(2)(i)(B) §98 .236(c)(8)(iii) (D) (B) An estimate of the fraction of oil throughput reported in paragraph (j)(2)(i)(A) sent to atmospheric tanks in the basin that control led
emissions with flares. Best estimate of fraction of production sent to tanks with
assumed control measures: either vapor recovery system or flaring of tank vapors. Current

§98 .236(j)(2)(i)(C) §98 .236(c)(8)(iii) (D) (C) An estimate of the fraction of oil throughput reported in paragraph (j)(2 )(i)(A) sent to atmospheric tanks in the basin that control led emissions with vapor recovery systems. Best estimate of fraction of production sent to tanks with
assumed control measures: either vapor recovery system or flaring of tank vapors. Current

§98 .236(j)(2)(i)(D) §98 .236(c)(8)(iii)(E) (D) The number of atmospheric tanks in the basin. Count of hydrocarbon tanks on well pads. Current



### 42

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(j)(2)(i)(E) §98 .236(c)(8)(iii) (A) (E) The number of wells with gas

- liquid separators (“Count” from Equation W

- 15 of this subpart) in
the basin. Number of wellhead
separators. Current

§98 .236(j)(2)(i)(F) §98 .236(c)(8)(iii)(B) (F) The number of wells without gas

- liquid separators (“Count” from Equation W

- 15 of this subpart) in the basin. Number of wells without wellhead separators. Current

§98 .236(j)(2)(ii) and (j)(2)(ii) (A) (ii) Report the information specified in paragraphs (j)(2)(ii)(A) through (j)(2)(ii)(D) of this section for
each sub

- basin with atmospheric tanks whose
emissions were calculated using Calculation
Method 3 and that did not control emissions with
flares.
(A) Sub

- basin ID. New

§98 .236(j)(2)(ii)(B) (B) The number of atmospheric tanks in the sub

basin that did not control emissions with flar es

. New

§98 .236(j)(2)(ii)(C) §98 .236(c)(8)(iii)(F) (C) Annual CO 2 emissions, in metric tons CO 2 , from atmospheric tanks in the sub

- basin that did not
control emissions with flares, calculated using Equation W

- 15 of this subpart and adjusted for vapor recovery, if applicable

. Annual CO 2 and CH 4 emissions that resulted from venting gas to the atmosphere, expressed in metric tons CO 2 e for each gas, at the sub

- basin
level for Calculation Methodology 5 of §98 .233(j). Current

§98 .236(j)(2)(ii)(D) §98 .236(c)(8)(iii)(F) (D) Annual CH 4 emissions, in metric tons CH 4 , from atmospheric tanks in the sub

- basin that did not
control emissions with flares , calculated using Equation W

- 15 of this subpart and adjusted for vapor recovery, if applicable

. Annual CO 2 and CH 4 emissions that resulted fr om venting gas to the atmosphere, expressed in metric tons CO 2 e for each gas, at the sub

- basin
level for Calculation Methodology 5 of §98 .233(j). Current



### 43

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(j)(2)(iii) and (j)(2)(iii) (A) (iii) Report the information specified in paragraphs (j)(2)(iii)(A) through (j)(2)(iii)(E) of this section for
each sub

- basin with atmospheric tanks whose
emissions were calculated using Calculation
Method 3 and that control led emissions with flares.
(A) Sub

- ba sin ID. New

§98 .236(j)(2)(iii)(B) (B) The number of atmospheric tanks in the sub

basin that controll ed emissions with flar es

. New

§98 .236(j)(2)(iii)(C) §98 .236(c)(8)(iii) (H) (C) Annual CO 2 emissions, in metric tons CO 2 , from atmospheric tanks that controlled emissions
with flares

. Annual CO 2, CH 4, and N 2 O
emissions that resulted from flaring gas, expressed in metric
tons CO 2 e for each gas, at the
sub

- basin level for Calculation Methodology 5 of §98 .233(j). Current

§98 .236(j)(2)(iii)(D) §98 .236(c)(8)(iii) (H) (D) Annual CH 4 emissions, in metric tons CH 4 , from atmospheric tanks that controlled emissions
with flares. Annual CO 2, CH 4, and N 2 O
emissions that resulted from flaring gas, expressed in metric
tons CO 2 e for each gas, at the
sub

- basin level for Calculation Methodology 5 of §98 .233(j). Current

§98 .236(j)(2)(iii)(E) §98 .236(c)(8)(iii) (H) (E) Annual N 2 O emissions, in metric tons N 2 O,
from atmospheric tanks that controlled emissions
with flares. Annual CO 2, CH 4, and N 2 O
emissions that resulted from flaring gas, expressed in metric
tons CO 2 e for each gas, at the
sub

- basin level for Calculation Methodology 5 of §98 .233(j). Current



### 44

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(j)(3) and (j)(3) (i) §98 .236(c)(8)(iv)(A) (3) If you used Calculation Method 1 or Calculation Method 2, and any gas

- liquid separator liquid dump values did not close properly during the calendar

year, then you must report the information specified in paragraphs (j)(3)(i) through (j)(3)(iv) of this
sectio n. (i) The total number of gas

- liquid separators whose liquid dump valves did not close properly during the calendar year. Count of wellhead separators that dump valve factor is applied

. Current

§98 .236(j)(3)(ii) (ii) The total time the dump valves on gas

- liquid
separators did not clos e properly in the calendar year, in hours (“T
n ” in Equation W

- 16 of this subpart). New

§98 .236(j)(3)(iii) §98 .236(c)(8)(iv)(B) (iii) Annual CO 2 emissions, in metric tons CO 2 , that resulted from the dump valve s on gas

- liquid
separator s not closing properly during the calendar year, calculated using Equation W

- 16 of this subpart. Annual CO 2 and CH 4 emissions that resulted from venting gas to the atmosphere, expressed in metric tons CO 2 e for each gas, at the sub

- basin level for improperly functioning dump valves. Current

§98 .236(j)(3)(iv) §98 .236(c)(8)(iv)(B) (iv) Annual CH 4 emissions, in metric tons CH 4 , that resulted from the dump valve s on gas

- liquid
separator s not closing properly during the calendar year, calculated using Equation W

- 16 of this subpart. Annual CO 2 and CH 4 emissions that resulted from venting gas to the atmosphere, expressed in metric tons CO 2 e for each gas, at the sub

- basin level for improperly functioning dump valves. Current

N/A §98.236(c)(8)(i)(H) N/A Best estimate of count of stock
tanks assumed to have
emissions control measures not at well pads, receiving your oil. Current



### 45

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

N/A §98.236(c)(8)(ii)(D) N/A Sales oil API gravity range for wells in (c)(8)(ii)(B) and (c)(8)(ii)(C) of this section, in degrees. Current

N/A §98.236(c)( 8 )(i i )( F ) N/A Count of hydrocarbon tanks, both on and off well pads
assumed to have emissions control measures: either vapor recovery system or flaring of
tank vapors. Current

N/A §98.236(c)( 8 )(i i )( G ) N/A Annual CO 2 and CH 4 emissions that resulted from venting gas to the atmosphere, expressed in metric tons CO 2 e for each gas, at the sub

- basin
level for Calculation Methodology 3 or 4 of §98.233(j). Current

N/A §98.236(c)( 8 )(i i )( H ) N/A Annual CO 2 and CH 4 gas quantities that were recovered, expressed in metric tons CO 2 e for each gas, at the sub

- basin
level for Calculation Methodology 3 or 4 of §98.233(j). Current

N/A §98.236(c)( 8 )( i i)( I ) N/A Annual CO 2 , CH 4 , and N 2 O
emissions that resulted from flaring gas, expressed in metric
tons CO 2 e for each gas, at the
sub

- basin level for Calculation Methodology 3 and 4 of §98.233(j). Current



### 46

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

N/A §98.236(c)(8)(iii)(G) N/A Annual CO 2 and CH 4 gas quantities that were recovered, expressed in metric tons CO 2 e for each gas, at the sub

- basin
level for Calculation Methodology 5 of §98.233(j). Current

Transmission Storage Tanks

§98 .236(k) (k) You must indicate whether your facility contains any transmission storage tanks

. ... New

§98 .236(k)

, (k) (1)

, and (k)(1) (i) §98 .236(c)(9)(iii) (k) ... If your facility contains at least one transmission storage tank, then you must report the information specified in paragraphs (k)(1) through (k)( 3 ) of this sect ion for each transmission storage tank vent stack.
(1) For each transmission storage tank vent stack report the information specified in (k)(1)(i) through (k)(1)(iv) of this section. (i) The unique name or ID number for the transmission storage tank vent stack. A unique name or ID number
for the vent stack monitored according to 40 CFR §98 .233(k). Current

§98 .236(k)(1)(ii) (ii) Method used to determine if dump valve leakage occurr ed

. New

§98 .236(k)(1)(iii) (iii) Indicat e whether scrubber dump valve leakage

occurr ed for the transmission storage tank vent according to §98.233(k)(2)

. New

§98 .236(k)(1)(iv) (iv) Indicat e if there is a flare attached to the transmission storage tank vent stack. New



### 47

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(k)(2) and (k)(2) (i) (2 ) If scrubber dump valve leakage occurred for a transmission storage tank vent stack, as reported in paragraph (k)(1)(iii) of this section, and the vent stack vented directly to the atmosphere during the
calendar year, then you must report the information specified in paragr aphs (k)(2)(i) through (k)(2)(v)
of this section for each transmission storage vent
stack where scrubber dump valve leakage occurred

. (i) Method used to measure the leak rate. New

§98 .236(k)(2)(ii) (ii) Measured leak rate (average leak rate from a continuous flow measurement device)

, in standard cubic feet per hour. New

§98 .236(k)(2)(iii) (iii) Duration of time that the leak is counted as having occurred

, in hours

, as determined in §98.233(k)(3) (may use best available data if a continuous flow m easurement device was used). New

§98 .236(k)(2)(iv) §98 .236(c)(9)(i) (iv) Annual CO 2 emissions, in metric tons CO 2 , that resulted from venting gas directly to the atmosphere, calculated according to §98 .233(k)(1) through (k)( 4 ). For each vent stack

, report annual CO 2 and CH 4 emissions that resulted from venting gas directly to the atmosphere, expressed in metric tons CO 2 e for each gas. Current

§98 .236(k)(2)(v) §98 .236(c)(9)(i) (v) Annual CH 4 emissions, in metric tons CH 4 , that resulted from venting gas directly to the atmosphere, calculated according to §98 .233(k)(1) through (k)( 4 ). For each vent stack , report annual CO 2 and CH 4 emissions that resulted from venting gas directly to the atmosphere, expressed in metric tons CO 2 e for each gas. Current



### 48

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(k)(3) and (k)(3) (i) (3) If scrubber dump valve leakage occurred for a transmission storage tank vent stack, as reported in paragraph (k)(1)(iii) and the vent stack vented to a flare during the calendar year, then you must report
the information specified in paragraphs (k)(3)(i) through (k)(3)(vi).
(i) Method used to measure the leak rate. New

§98 .236(k)(3)(ii) (ii) Measured leakage rate (average leak rate from a continuous flow measurement device)

, in standard cubic feet per hour. New

§98 .236(k)(3)(iii) (iii) Duration of time that flaring occurred

, in hours

, as determined in §98.233(k)(3) (may use best
available data if a continuous flow measurement
device was used). New

§98 .236(k)(3)(iv) §98 .236(c)(9)(ii) (iv) Annual CO 2 emissions, in metric tons CO 2 , that resulted from flaring gas, calculated according to §98 .233(k)( 5 ). For each transmission storage tank, report annual CO 2 , CH 4 , and N 2 O emissions that resulted from flaring process gas from the transmission storage tank, expressed in
metric tons CO 2 e for each gas. Current

§98 .236(k)(3)(v) §98 .236(c)(9)(ii) (v) Annual CH 4 emissions, in metric tons CH 4 , that resulted from flaring gas, calculated according to §98 .233(k)( 5 ). For each transmission storage tank, report annual CO 2 , CH 4 , and N 2 O emissions that resulted from flaring process gas from the transmission storage tank, expressed in
metric tons CO 2 e for each gas. Current



### 49

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(k)(3)(vi) §98 .236(c)(9)(ii) (vi) Annual N 2 O emissions, in metric tons N 2 O, that resulted from flaring gas, calculated according to §98 .233(k)( 5 ). For each transmission storage tank, report annual CO 2 , CH 4 , and N 2 O emissions that resulted from flaring process gas from the transmission storage tank, expressed in
metric tons CO 2 e for each gas. Current

Well Testing

§98 .236(l) (l) You must indicate whether you performed gas well or oil well testing, and if the testing of gas
wells or oil wells resulted in vent ed or flar ed
emissions during the calendar year

. ... New

§98 .236(l)

, (l) (1)

, and (l)(1) (i) §98 .236(c)(10)(i) (l)

... If you performed well testing that resulted in

vent ed or flar ed emissions during the calendar year

, then you must report the information specified in paragraphs (l)(1) through (l)(4)

, as applicable. (1) If you used Equation W

- 17A to calculate annual volumetric natural gas emissions at actual
conditions from oil wells and the emissions are not vented to a flare, then you must report the information specified in paragraphs (l)(1)(i) through (l)(1)(vi) o f this section.
(i) Number of wells tested in the calendar year. Number of wells tested per basin in calendar year. Current

§98 .236(l)(1)(ii) §98 .236(c)(10)(iii) (ii) Average number of well testing days per well for well(s) tested in the calendar year. Average number of days the
well is tested in a basin. Current

§98 .236(l)(1)(iii) §98 .236(c)(10)(ii) (iii) Average gas to oil ratio for well(s) tested, in cubic feet of gas per barrel of oil. Average gas to oil ratio for
each basin. Current



### 50

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(l)(1)(iv) (iv) Average flow rate for well(s) tested

, in barrels of oil per day

. You may delay reporting of this data element if you indicate in the annual report that wildcat wells and/or delineation wells are the only wells that are tested. If you elect to delay reporting of this data element, you must report by the date specified i n §98.236(cc) the measured average annual production rate for well(s) tested and the
API W ell N umber(s) for the wells included in the

measurement. New

§98 .236(l)(1)(v) §98 .236(c)(10)(iv) (v) Annual CO 2 emissions, in metric tons CO 2 , as calculated accordi ng to §98 .233(l). Report annual CO 2 and CH 4 emissions at the facility level

, expressed in metric tons CO 2 e for each gas, emissions from well testing venting. Current

§98 .236(l)(1)(vi) §98 .236(c)(10)(iv) (vi) Annual CH 4 emissions, in metric tons CH 4 , calculated according to §98 .233(l). Report annual CO 2 and CH 4 emissions at the facility level

, expressed in metric tons CO 2 e for each gas, emissions from well testing venting. Current

§98 .236(l)(2) and (l)(2) (i) §98 .236(c)(10)(i) (2) If you used Equation W

- 17A to calculate annual volumetric natural gas emissions at actual
conditions from oil wells and the emissions are vented to a flare, then you must report the information specified in paragraphs (l)(2)(i) through (l)(2)(vii) of this section.
(i) Number of wells tested in the calendar year. Number of wells tested per basin in calendar year. Current

§98 .236(l)(2)(ii) §98 .236(c)(10)(iii) (ii) Average number of well testing days per well for well(s) tested in the calendar year. Average number of days the
well is tested in a basin. Current

§98 .236(l)(2)(iii) §98 .236(c)(10)(ii) (iii) Average gas to oil ratio for well(s) tested

, in cubic feet of gas per barrel of oil

. Average gas to oil ratio for
each basin. Current



### 51

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(l)(2)(iv) (iv) Average flow rate for well(s) tested

, in barrels of oil per day

. You may delay reporting of this data element if you indicate in the annual report that wildcat wells and/or delineation wells are the only wells that are tested. If you elect to delay re porting of this data element, you must report by the date specified in §98.236(cc) the measured average annual production rate for well(s) tested and the
API W ell N umber(s) for the wells included in the

measurement. New

§98 .236(l)(2)(v) §98 .236(c)(10)(iv) (v) Annual CO 2 emissions, in metric tons CO 2 , calculated according to §98 .233(l). Report annual CO 2 and CH 4 emissions at the facility level

, expressed in metric tons CO 2 e for each gas, emissions from well testing venting. Current

§98 .236(l)(2)(vi) §98 .236(c)(10)(iv) (vi) Annual CH 4 emissions, in metric tons CH 4 , calculated according to §98 .233(l). Report annual CO 2 and CH 4 emissions at the facility level

, expressed in metric tons CO 2 e for each gas, emissions from well testing venting. Current

§98 .236(l)(2)(vii) §98 .236(c)(10)(iv) (vii) Annual N 2 O emissions, in metric tons N 2 O,
calculated according to §98 .233(l). Report annual CO 2 and CH 4 emissions at the facility level

, expressed in metric tons CO 2 e for each gas, emissions from
well testing venting. Current

§98 .236(l)(3) and (l)(3) (i) §98 .236(c)(10)(i) (3) If you used Equation W

- 17B to calculate annual volumetric natural gas emissions at actual conditions from gas wells and the emissions were not vented to a flare, then you must report the information specified in paragraphs (l)(3)(i) through (l)(3)(v) of this section.
(i) Number of wells tested in the calendar year. Number of wells tested per basin in calendar year. Current



### 52

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(l)(3)(ii) §98 .236(c)(10)(iii) (ii) Average number of well testing days per well for well(s) tested in the calendar year. Average number of days the
well is tested in a basin. Current

§98 .236(l)(3)(iii) (iii) Average annual production rate for well(s)
tested in actual cubic feet per day

. You may delay reporting of this data element if you indicate in the annual report that wildcat wells and/or delineation wells are the only wells that are tested. If you elect to delay reporting of this data element, you must report by the date specified i n §98.236(cc) the measured average annual production rate for well(s)
tested and the API W ell N umber(s) for the wells
included in the measurement. New

§98 .236(l)(3)(iv) §98 .236(c)(10)(iv) (iv) Annual CO 2 emissions

, in metric tons CO 2 , calculated according to §98 .233(l). Report annual CO 2 and CH 4 emissions at the facility level, expressed in metric tons CO 2 e for each gas, emissions from well testing venting. Current

§98 .236(l)(3)(v) §98 .236(c)(10)(iv) (v) Annual CH 4 emissions

, in metric tons CH 4 , calculated according to §98 .233(l). Report annual CO 2 and CH 4 emissions at the facility level, expressed in metric tons CO 2 e for each gas, emissions from well testing venting. Current

§98 .236(l)(4) and (l)(4) (i) §98 .236(c)(10)(i) (4) If you used Equation W

- 17B to calculate annual volumetric natural gas emissions at actual conditions from gas wells and the emissions were vented to a flare, then you must report the information specified in paragraphs (l)(4)(i) through (l)(4)(vi) of this section. (i) Number of wells tested in calendar year. Number of wells tested per basin in calendar year. Current

§98 .236(l)(4)(ii) §98 .236(c)(10)(iii) (ii) Average number of well testing days per well for well(s) tested in the calendar year. Average number of days the
well is tested in a basin. Current



### 53

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(l)(4)(iii) (iii) Average annual production rate for well(s)
tested

, in actual cubic feet per day

. You may delay reporting of this data element if you indicate in the annual report that wildcat wells and/or delineation wells are the only wells that are tested. If you elect to delay reporting of this data element, you must report by the date specified i n §98.236(cc) the measured average annual production rate for well(s)
tested and the API W ell N umber(s) for the wells
included in the measurement. New

§98 .236(l)(4)(iv) §98 .236(c)(10)(v) (iv) Annual CO 2 emissions

, in metric tons CO 2 , calculated according to §98 .233(l). Report annual CO 2, CH 4, and

N 2 O emissions at the facility level, expressed in metric tons
CO 2 e for each gas, emissions from well testing flaring. Current

§98 .236(l)(4)(v) §98 .236(c)(10)(v) (v) Annual CH 4 emissions

, in metric tons CH 4 , calculated according to §98 .233(l). Report annual CO 2, CH 4, and

N 2 O emissions at the facility level, expressed in metric tons
CO 2 e for each gas, emissions from well testing flaring. Current

§98 .236(l)(4)(vi) §98 .236(c)(10)(v) (vi) Annual N 2 O emissions, in metric tons N 2 O,
calculated according to §98 .233(l). Report annual CO 2, CH 4, and

N 2 O emissions at the facility level, expressed in metric tons
CO 2 e for each gas, emissions from well testing flaring. Current

Associated Natural Gas

§98 .236(m) (m) You must indicate whether any associated gas was vented or flared during the calendar year

. ... New



### 54

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(m) and (m) (1) (m)

... If associated gas was vented or flared during the calendar year

, then you must report the information specified in paragraphs (m)(1) through (m)( 8 ) of this section for each s ub

- basin.
(1) Sub

- basin ID. New

§98 .236(m)(2) (2) Indicat e whether any associated gas was vented directly to the atmosphere without flaring. New

§98 .236(m)(3) (3) Indicat e whether any associated gas was flared. New

§98 .236(m)(4) §98 .236(c)(11 ) (ii) (4) Average gas to oil ratio, in standard cubic feet of gas per barrel of oil (average of the “GOR” values used in Equation W

- 18 of this subpart). Average gas to oil ratio for
each basin. Current

§98 .236(m)(5) (5) Volume of oil produced, in barrels, in the calendar year during the time periods in which associated gas was vented or flared ( the sum of

“V p,q ” used in Equation W

- 18 of this subpart). You may delay reporting of this data element if you indicate in the annual report that wildcat wells and/or delineation wells are the only wells from which associated gas was vented or flared. If you elect to delay reporting of this data element, you

must report by the date specified in §98.236(cc) the volume of oil produced for well(s) with associated gas venting and flaring and the API W ell

N umber(s) for the wells included in the

measurement. New



### 55

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(m)(6) (6) Total volume of associated gas sent to sales, in standard cubic feet, in the calendar year during time periods in which associated gas was vented or flared ( the sum of “SG” values used in Equation W

18 of §98.233(m) ). You may delay reporting of this data element if you indicate in the annual report that
wildcat wells and /or delineation wells are the only
wells from which associated gas was vented or
flared . If you elect to delay reporting of this data element, you must report by the date specified in §98.236(cc) the measured total volume of associated gas sent to sales for well(s) with associated gas venting and flaring and the API W ell

N umber(s) for the wells included in the

measurement. New

§98 .236(m)( 7 ) and (m)( 7 ) (i) §98 .236(c)(11)(i) ( 7 ) If you ha d associated gas emissions vented directly to the atmosphere without flaring, then you must report the information specified in paragraphs (m)( 7 )(i) through (m)( 7 )(iii) of this section for each

s ub

- basin. (i) Total number of wells for which associated gas
was vented directly to the atmosphere without flaring. Number of wells venting or flaring associated natural gas in a calendar year. Current

§98 .236(m)( 7 )(ii) §98 .236(c)(11)(iii) (ii) Annual CO 2 emissions, in metric tons CO 2 , calculated according to §98 .233(m)(3) and (m)(4). Report annual CO 2 and CH 4 emissions at the facility level, expressed in metric tons CO 2 e for each gas, emissions from associated natural gas venting. Current

§98 .236(m)( 7 )(i ii) §98 .236(c)(11)(iii) (iii) Annual CH 4 emissions, in metric tons CH 4 , calculated according to §98 .233(m)(3) and (m)(4). Report annual CO 2 and CH 4 emissions at the facility level, expressed in metric tons CO 2 e for each gas, emissions from
associated natural gas venting. Current



### 56

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(m)( 8 ) and (m)( 8 ) (i) §98 .236(c)(11)(i) ( 8 ) If you had associated gas emissions that were flare d

, then you must report the information specified in paragraphs (m)( 8 )(i) through (m)( 8 )(iv)
of this section for each s ub

- basin. (i) Total number of wells for which associated gas
was flared. Number of wells venting or flaring associated natural gas in a calendar year. Current

§98 .236(m)( 8 )(ii) §98 .236(c)(11)(iv) (ii) Annual CO 2 emissions, in metric tons CO 2 , calculated acc ording to §98 .233(m)(5). Report annual CO 2, CH 4, and

N 2 O emissions at the facility level, expressed in metric tons
CO 2 e for each gas, emissions from associated natural gas flaring. Current

§98 .236(m)( 8 )(iii) §98 .236(c)(11)(iv) (iii) Annual CH 4 emissions, in metric tons CH 4 , calculated according to §98 .233(m)(5). Report annual CO 2, CH 4, and

N 2 O emissions at the facility level, expressed in metric tons
CO 2 e for each gas, emissions from associated natural gas flaring. Current

§98 .236(m)( 8 )(iv) §9 8 .236(c)(11)(iv) (iv) Annual N 2 O emissions, in metric tons N 2 O,
calculated according to §98 .233(m)(5). Report annual CO 2, CH 4, and

N 2 O emissions at the facility level, expressed in metric tons
CO 2 e for each gas, emissions from associated natural gas flaring. Current

Flare Stacks

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

... New



### 57

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(n) and (n) (1) §98 .236(c)(12)(x) (n)

... Y ou must report the information specified in paragraphs (n)( 1) through (n)(13) of this section for
each flare stack at your facility, and for each industry segment applicable to your facility. (1) Unique name or ID for the flare stack. For the onshore petroleum and natural gas production industry segment, a different name or ID may be used for a single flare stack for each location where it operates at in a given calendar year. For the natural gas processing industry segment, a unique
name or ID number for the
flare stack. Current

§98 .236(n)(2) §98 .236(c)(12)(i) (2) Indicate whether the flare stack has a continuous
flow measurement device. Whether flare has a continuous
flow monitor. Current

§98 .236(n)(3) §98 .236(c)(12)(iv) (3) Indicate whether the flare stack has a continuous gas composition analy zer on feed gas to the flare. Whether flare has a continuous gas analyzer. Current

§98 .236(n)(4) §98 .236(c)(12)(ii) (4) Volume of gas sent to the flare in standard cubic feet (“ V s ” in Equation s W

- 19 and W

- 20 of this subpart). Volume of gas sent to flare in cubic feet per year. Current

§98 .236(n)(5) §98 .236(c)(12)(iii) (5) Fraction of the feed gas sent to an un

- lit flare (“Z
u ” in Equation W

- 19 of this subpart). Percent of gas sent to un

- lit flare determined by engineering estimate and process knowledge based on
best available data and operating records. Current

§98 .236(n)(6) §98 .236(c)(12)(v) (6) Flare combustion efficiency expressed as the fraction of gas combusted by a burning flare. Flare combustion efficiency. Current

§98 .236(n)(7) (7) Mole fraction of CH 4 in the feed gas to the flare (“X CH4 ” in Equation W

- 19 of this subpart). New

§98 .236(n)(8) (8) Mole fraction of CO 2 in the feed gas to the flare (“X CO2 ” in Equation W

- 20 of this subpart). New



### 58

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(n)(9) §98 .236(c)(12)(vii) and (viii) (9) Annual CO 2 emissions, in metric tons CO 2 (refer to Equation W

- 20 of this subpart). (vii) Report uncombusted CO 2 emissions in metric tons CO 2 e (refer to Equation W

- 20 of §98 .233)
(viii) Report combusted CO 2 emissions, in metric tons CO 2 e (refer to Equation W

- 21 of §98 .233). Current

§98 .236(n)(10) §98 .236(c)(12)(vi) (10) Annual CH 4 emissions, in metric tons CH 4 (refer to Equation W

- 19 of this subpart). Report uncombusted CH 4 emissions, in metric tons CO 2 e (refer to Equation W

- 19 of §98 .233). Current

§98 .236(n) ( 11) §98 .236(c)(12)(ix) (11) Annual N 2 O emissions, in metric tons N 2 O (refer to Equation W

- 40 of this subpart). Report N 2 O emissions, in
metric tons CO 2 e. Current

§98 .236(n)(12) §98 .236(c)(12)(xi) (12) Indicate whether a CEMS was used to measure
emissions from the flare . If a CEMS was used to
measure emissions from the flare

, then you are not required to report N 2 O and CH 4 emissions for the
flare stack. In the case that a CEMS is used
to measure CO 2 emissions for the flare stack, indicate that a
CEMS was used in the annual
report and report the
combusted CO 2 and
uncombusted CO 2 as a combined number. Current

Centrifugal Compressors

§98 .236(o) (o) You must indicate whether your facility has centrifugal compressors

. ... New

§98 .236(o)(1) and (o)(1) (i) ( 1) Report the information specified in paragraphs (o)(1)(i) through (o)(1)(x i v) of this section for each centrifugal compressor located at your facility. (i) Unique name or ID for the centrifugal

compressor. New

§98 .236(o)(1)(ii) §98

. 236 (c)(13)(i)(F) (ii) Hours in operating

- mode

. Total time the compressor is operating in hours. Current



### 59

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(o)(1)(iii) §98

. 236 (c)(13)(iii)(A) (iii) Hours in not

- operating

- depressurized

- mode

. Total time in hours the compressor is in shutdown, depressurized mode. Current

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

- mode

. New

§98 .236(o)(1)(v) (v) Indicat e whether the compressor was measured

in not

- operating

- depressurized

- mode

. New

§98 .236(o)(1)(vi) (vi) Indicate which, if any , compressor sources are part of a manifolded group of compressor sources. New

§98 .236(o)(1)(vii) (vii) Indicate which, if any , compressor sources are routed to a flare. New

§98 .236(o)(1)(viii) (viii) Indicate which, if any , compressor sources have vapor recovery. New

§98 .236(o)(1)(ix) (ix) Indicate which, if any , compressor source emissions are captured for fuel use or are routed to
a thermal oxidizer

. New

§98 .236(o)(1)(x) (x) Indicate whether the compressor has blind flanges installed and associated dates

. New

§98 .236(o)(1)(xi) (xi) Indicate whether the compressor has wet or dry
seals. New

§98 .236(o)(1)(xii) §98

. 236 (c)(13)(i)(A) (xii) If the compressor has wet seals, the number of
wet seals. Number of wet seals connected to the degassing vent. Current

§98 .236(o)(1)(xiii) (xiii) Power output of the compressor driver (hp). New

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

. New



### 60

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98

. 236 (o)(2) (i) and (o)(2) (i) (A) ( i ) For each compressor source at each compressor, report the information specified in paragraphs (o)(2)(i) (A) through (o)(2)( i) (C) of this section.
( A ) Centrifugal compressor name or ID. Use the same ID as in paragraph (o)(1)( i ) of this section. New

§98

. 236 (o)(2)(i) (B) (B) Centrifugal compressor source (wet seal, isolation valve, or blowdown valve ). New

§98

. 236 (o)(2)(i) (C) (C) Unique name or ID for the leak or vent. If the
leak or vent is connected 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 measurements 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 compr essor source. New

§98

. 236 (o)(2)( i i ) and (o)(2)(ii)(A) (ii) For each leak or vent, report the information specified in paragraphs (o)(2)(ii)(A) through (o)(2)(ii)(E) of this section.
(A ) Indicate 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. New

§98

. 236 (o)(2)( ii ) (B) (B) Indicate whether an as found measurement (s) as identified in §98 .233(o)(2) or (o)(4) was conducted
on the leak or vent. New



### 61

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98

. 236 (o)(2)( i i ) (C) (C) Indicate whether continuous measurement s as identified in § §98 .233(o)(3) or (o)(5) were conducted on the leak or vent. New

§98

. 236 (o)(2)( ii) (D) and (o)(2)( ii) ( D ) ( 1 ) §98 .236(c)(13)(i)
(G), §98 .236(c)(13)(i i)
(C), and §98 .236(c)(13)(i ii )
(C) (D) R eport emissions as specified in paragraphs (o)(2)(ii)( D ) ( 1 ) and (o)(2)(ii)( D ) ( 2 ) of this section
for the leak or vent. If the leak or vent is routed to a flare, combustion, or vapor recovery, you are not required to report emission s under this paragraph

. ( 1 ) Annual CO 2 emissions, in metric tons CO 2

. (i)(G) Report seal oil degassing vent emissions for compressors measured and for compressors
not measured in metric tons of
CO 2 e for each gas.
(ii)(C) Report blowdown vent emissions when in operating
mode in metric tons of CO 2 e for each gas.
(iii)(C) Report the isolation valve leakage emi ssions in not operating, depressurized mode
in metric tons of CO 2 e for each

gas. Current

§98 .236(o)(2)(ii) ( D ) ( 2 ) §98 .236(c)(13)(i) (G), §98 .236(c)(13)(i i)
(C), and §98 .236(c)(13)(i ii )
(C) (2) Annual CH 4 emissions, in metric tons CH 4

. (i)(G) Report seal oil degassing vent emissions for compressors measured and for compressors
not measured in metric tons of
CO 2 e for each gas.
(ii)(C) Report blowdown vent emissions when in operating
mode in metric tons of CO 2 e for each gas.
(iii)(C) Report the isolation valve leakage emissions in not operating, depressurized mode
in metric tons of CO 2 e for each

gas. Revised



### 62

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(o)(2)( ii) (E) (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 compressor source emissions were routed to the
device

. New

§98 .236(o)(3)

, (o)(3) (i)

, and (o)(3)(i) (A) (3) If the measurement methods specified in paragraphs §98 .233(o)(2) or (o)(4) are conducted

, report the information specified in paragraph (o)(3)(i) of this section.

... (i) For each as found measurement performed on a
leak or vent, report the information specified in paragraphs (o)(3)(i)(A) through (o)(3)(i)(E) of this
section.
(A) N ame or ID of leak or vent. Use same leak or vent ID as in paragraph (o)(2)(i) (C) of this section. New

§98 .236(o)(3)(i) (B) (B) Measurement date. New

§98 .236(o)(3)(i) (C) (C) M easurement method. If emissions were not detected when using a screening method, report the screening method. If emissions were detected using a screening method, report only the method subsequently used to measure the volumetric
emissions. New

§98 .236(o)(3)(i) (D) (D) Measured flow rate, in standard cubic feet per
hour. New

§98 .236(o)(3)(i)(E) (E) F or each compressor attached to the leak or vent, report the compressor mode during which the

measurement was taken. New

§98.236(o)(3)(i)(F) (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. New



### 63

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

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

- source combination where a reporter emission factor as calculated in

E quation W

- 2 3 was used to calculate emissions in Equation W

- 2 2 , report the information specified in paragraphs (o)(3)(ii)(A) through (o)(3)(ii)(D) of this
section

. (A) The compressor mode

- source combination. New

§98 .236(o)(3)(ii)(B) §98

. 236(c)(13)(i ) (E )

, §98

. 236(c)(13)(i i) (B)

, and §98

. 236 (c)(13)(iii) (B) (B) T he compressor mode

- source combination reporter emission factor, in standard cubic feet per hour ( “ EF s,m ” in Equation W

- 2 3 ). (i)(E) Reporter emission factor for wet seal oil degassing vents in cubic feet per hour (refer to Equation W

- 24 of §98.233). (ii)(B) Reporter emission factor
for blowdown vents in cubic feet per hour (refer to Equation

W

- 24 of §98.233)

. (iii) (B) Reporter emission
factor for isolation valve emissions in shutdown, depressurized mode in cubic feet per hour (refer to Equation

W

- 24 of §98 .233). Current

§98 .236(o)(3)(ii)(C) (C) T he total number of compressors measured in the compressor mode

- source combination in the current reporting year and the preceding two reporting years ( “ Count
m ” in Equation W

- 2 3 ). New

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

- source combination reporter emission factor is facility

specific or based on all of the reporter's applicable
facilities

. New



### 64

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(o)(4) and (o)(4) (i) (4) If the measurement methods specified in paragraphs §98 .233(o)(3) or (o)(5) are conducted

, report the information specified in paragraphs (o)(4)(i) through (o)(4)(i v ) of this section for each
continuous measurement conducted on each leak or vent associated with each compressor source or manifolded group of com pressor sources

. (i) Name or ID of leak or vent. Use same leak or

v ent ID as in paragraph (o)(2)(i) (C) of this section. New

§98 .236(o)(4)(ii) (ii) Measured volume of flow during the reporting year, in million standard cubic feet

. New

§98 .236(o)(4)(ii i ) (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). New

§98.236(o)(4)(iv ) (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. New

§98 .236(o)(5) and (o)(5) (i) §98 .236(c)(13)(v) (A) (5) Centrifugal compressors with wet seal degassing

vents in onshore petroleum and natural gas production must report the information specified in paragraphs (o)(5)(i) through (o)(5)(iii) of this
section. (i) Number of centrifugal compressors that have wet seal oil degassing vents. Count of compressors. Revised

§98 .236(o)(5)(ii) §98 .236(c)(13)(v) (B) (ii) Annual CO 2 emissions, in metric tons CO 2 , from centrifugal compressors with wet seal oil degassing vents. Report annual emissions in
metric tons of CO 2 e for each gas (refer to Equation W

- 25 of §98 .233) collectiv ely. Current



### 65

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(o)(5)(iii) §98 .236(c)(13)(v) (B) (iii) Annual CH 4 emissions, in metric tons CH 4 , from centrifugal compressors with wet seal oil degassing vents. Report annual emissions in
metric tons of CO 2 e for each gas (refer to Equation W

- 25 of §98 .233) collectively. Current

N/A §98.236(c)(13)(i)(B) N/A Fraction of vent gas recovered
for fuel or sales or flared. Current

N/A §98.236(c)(13)(i)(C) N/A Annual throughput in million scf, use an engineering
calculation based on best
available data. Current

N/A §98.236(c)(13)(i)(D) N/A Type of meters used for making measurements. Current

N/A §98.236(c)(13)(ii)
(A) N/A Total time in hours the compressor is in operating
mode. Current

N/A §98.236(c)(13)(iv) N/A Report total annual compressor
emissions from all modes of operation in metric tons of CO2e for each gas. Current

Reciprocating Compressors

§98 .236(p) (p) You must indicate whether your facility has reciprocating compressors.

... New

§98 .236(p)(1) and (p)(1) (i) (1) Report the information specified in paragraphs (p)(1)(i) through (p)(1)( xiv ) of this section for each reciprocating compressor located at your facility.
(i) Unique name or ID for the reciprocating

compressor. New

§98 .236(p)(1)(ii) §98 .236(c)(14)(i)(B) (ii) Hours in operating

- mode

. Total time in hours the reciprocating compressor is in operating mode. Current



### 66

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(p)(1)(iii) §98 .236(c)(14)(ii) (A) (iii) Hours in standby

- pressurized

- mode

. Total time in hours the compressor is in standby, pressurized mode. Current

§98 .236(p)(1)(iv) §98 .236(c)(14)(iii) (A) (iv) Hours in not

- operating

- depressurized

- mode

. Total time the compressor is in not operating, depressurized
mode. Current

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

- mode

. New

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

- pressurized

- mode

. New

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

- operating

- depressurized

- mode

. New

§98 .236(p)(1)(viii) (viii) Indicate which, if any , compressor sources are part of a manifolded group of compressor sources. New

§98 .236(p)(1)(ix) (ix) Indicate which, if any , compressor sources are routed to a flare. New

§98 .236(p)(1)(x) (x) Indicate which, if any , compressor sources have

vapor recovery. New

§98 .236(p)(1)(xi) (xi) Indicate which, if any , compressor source emissions are captured for fuel use or are routed to
a thermal oxidizer

. New

§98 .236(p)(1)(xii) (xii) Indicate whether the compressor has blind flanges installed and associated dates

. New

§98 .236(p)(1)(xiii) (xiii) Power output of the compressor driver (hp). New

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

. New



### 67

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(p)(2) (i) and (p)(2) (i) (A) ( i ) For each compressor source at each compressor, report the information specified in paragraphs (p)(2)(i) (A) through (p)(2)(i) (C) of this section.
( A ) Reciprocating compressor name or ID. Use the
same ID as in paragraph (p)(1)( i ) of this section. New

§98 .236(p)(2)(i) (B) (B) Reciprocating compressor source (isolation valve, blowdown valve, or rod packing ). New

§98 .236(p)(2)(i) (C) (C) Unique 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 manifold ed

group

. If multiple compressor sources are released through a single vent for which continuous measurements are used, us e 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. New

§98 .236(p)(2)( i i ) and (p)(2)(ii)(A) (ii) For each leak or vent, report the information specified in paragraphs (p)(2)(ii)(A) through (p)(2)(ii)(E) of this section.
(A) Indicate whether the leak or vent is for a single

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

§98 .236(p)(2)( ii ) (B) (B) Indicate whether an as found measurement (s) as identified in §98 .233(p)( 2) or (p)(4) was conducted
on the leak or vent. New



### 68

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(p)(2)( i i ) (C) (C) Indicate whether continuous measurement s as identified in §98 .233(p)(3) or (p)(5) were conducted
on the leak or vent. New

§98 .236(p)(2)(ii) (D) and (p)(2)(ii) ( D ) ( 1 ) §98 .236(c)(14)(i)
(C),
§98 .236(c)(14)(i i )
(C), and
§98 .236(c)(14)(i ii )
(C) ( D ) R eport emissions as specified in paragraphs (p)(2)(ii)( D ) ( 1 ) through (p)(2)(ii)( D ) ( 2 ) of this
section for the leak or vent. If the leak or vent is routed to flare, combustion, or vapor recovery, you are not required to report emission s under this paragraph

. ( 1 ) Annual CO 2 emissions, in metric tons CO 2

. (i)(C) Report rod packing emissions for compressors measured and for compressors
not measured in metric tons of
CO 2 e for each gas.
(ii)(C) Report blowdown vent emissions when in operating and standby pressurized modes
in metric tons of CO 2 e for each

gas. (iii)(C) Report isolation valve leakage emissions in not operating, depressurized mode
in metric tons of CO 2 e for each

gas. Current

§98 .236(p)(2)(ii) ( D ) ( 2 ) §98 .236(c)(14) (i)
(C),
§98 .236(c)(14)(i i )
(C), and
§98 .236(c)(14)(i ii )
(C) (2) Annual CH 4 emissions, in metric tons CH 4

. (i)(C) Report rod packing emissions for compressors measured and for compressors
not measured in metric tons of
CO 2 e for each gas.
(ii)(C) Report blowdown vent emissions when in operating and standby pressurized modes
in metric tons of CO 2 e for each

gas. (iii)(C) Report isolation valve leakage emissions in not operating, depressurized mode
in metric tons of CO 2 e for each

gas. Revised



### 69

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§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 respective device was operational when the compressor source emissions were routed to the
device

. New

§98 .236(p)(3)

, (p)(3) (i)

, and (p)(3)(i) (A) (3) If the measurement methods specified in paragraphs §98 .233(p)(2) or (p)(4) are conducted, report the information specified in paragraphs (p)(3)(i) of this section. If the calculation specified in paragraph §98 .233(p)( 6)(ii ) is performed, report the information specified in paragraph (p)(3)(ii) of
this section.
(i) For each as found measurement performed on a
leak or vent, report the information specified in paragraphs (p)(3)(i)(A) through (p)(3)(i)(E) of this
section.
(A) N ame or ID of leak or vent. Use the same leak

or vent ID as in paragraph (p)(2)(i) (C) of this
section. New

§98 .236(p)(3)(i) (B) (B) Measurement date. New

§98 .236(p)(3)(i) (C) (C) M easurement method. If emissions were not detected when using a screening method, report the screening method. If emissions were detected using a screening method, report only the method used to
measure the volumetric emissions. New

§98 .236(p)(3)(i) (D) (D) M easured flow rate, in standard cubic feet per
hour. New

§98 .236(p)(3)(i)(E) (E) F or each compressor attached to the leak or vent, report the compressor mode during which the

measurement was taken. New



### 70

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98.236(p)(3)(i)(F ) (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 emissions sources. New

§98 .236(p)(3)(ii) and (p)(3)(ii) (A) (ii) 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 information specified in paragraphs (p)(3)(ii)(A) through (p)(3)(ii)(D) of this
section

. (A) The compressor mode

- source combination. New

§98 .236(p)(3)(ii)(B) §98

. 236(c)(14)(i i) (B)

, and §98

. 236 (c)(14)(iii) (B) (B) T he compressor mode

- source combination reporter emission factor, in standard cubic feet per hour ( “ EF s,m ” in Equation W

- 28). (ii)(B) Reporter emission factor
for blowdown vents in cubic feet per hour (refer to §98.233, Equation W

- 28).
(iii)(B) Reporter emission
factor for isolation valve emissions in not operating, depressurized mode in cubic feet per hour (refer to Equation

W

- 2 8 of §98 .233). Current

§98 .236(p)(3)(ii)(C) (C) T he total number of compressors measured in the compressor mode

- source combination in the current reporting year and the preceding two reporting years ( “ Count
m ” in Equation W

- 28). New

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

- source combination reporter emission factor is facility

specific or based on all of the reporter's applicable
facilities

. New



### 71

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(p)(4) and (p)(4) (i) (4) If the measurement methods specified in paragraphs §98 .233(p)(3) or (p)(5) are conducted

, report the information specified in paragraphs (p)(4)(i) through (p)(4)(i v ) of this section for each
continuous measurement conducted on each leak or vent associated with each compressor source or manifolded group of compressor sources

. (i) Name or ID of leak or vent. Use same leak or

v ent ID as in paragraph (p)(2)(i) (C) of this section. New

§98 .236(p)(4)(ii) (ii) Measured volume of flow during the reporting year, in million standard cubic feet

. N ew

§98 .236(p)(4)(ii i ) (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). New

§98.236(p)(4)(iv ) (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. New

§98 .236(p)(5) and (p)(5) (i) §98 .236(c)(14)(v) (A) (5) Reciprocating compressors in onshore petroleum and natural gas production must report the information specified in paragraphs (p)(5)(i) through (p)(5)(iii) of this section. (i) Number of reciprocating compressors. Count of compressors. Current

§98 .236(p)(5)(ii) §98 .236(c)(14)(v) (B) (ii) Annual CO 2 emissions, in metric tons CO 2 , from reciprocating compressors. Report annual emissions in
metric tons of CO 2 e for each gas collectively (refer to Equation W

- 29 of §98 .233). Current

§98 .236(p)(5)(iii) §98 .236(c)(14)(v) (B) (iii) Annual CH 4 emissions, in metric tons CH 4 , from reciprocating compressors. Report annual emissions in
metric tons of CO 2 e for each gas collectively (refer to Equation W

- 29 of §98 .233). Current



### 72

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

N/A §98.236(c)(14)(i)(A) N/A Annual throughput in million scf, use an engineering
calculation based on best
available data. Current

N/A §98.236(c)(14)(iv) N/A Report total annual compressor
emissions from all modes of operation in metric tons of CO2e for each gas Current

E quipment Leak Surveys

§98 .236(q)

, (q) (1)

, and (q)(1)(i) (q) If your facility is subject to the requirements of §98 .233(q), then y ou must report the information specified in paragraphs (q)(1) and (q)(2) of this section. Natural gas distribution facilities with emission sources listed in §98.232(i)(1) must also

repor t the information specified in paragraph (q)(3)
of this section. (1) You must report the information specified in paragraphs (q)(1)(i) and (q)(1) (ii) of this section.
(i) Except as specified in paragraph (q)(1)(ii) of this section, t he number of complete e quipment leak surveys performed during the calendar year. New

§98 .236(q)(1) (ii) §98 .236(c)(16)(ii) (ii) N atural gas distribution facilities performing equipment leak surveys across a multiple year leak survey cycle must report the number of years in the leak survey cycle. Number of years over which all

T

- D transfer stations will be
monitored at least once. Revised



### 73

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(q)(2) and (q)(2)(i) (2) You must indicate whether your facility contains any of the component types listed in §98 .233 (d)(7), (e)(7), (f)(5), (g)(3), (h)(4), or (i)(1) , for your facility’s industry segment. For each component type that is located at your facility, you must report the information specified in paragraphs (q)(2)(i) through (q)(2)(v) of this section. If a component type is located at your facility, and no leaks were identified from that component

, then you must report the information in paragraphs (q)(2)(i) through (q)(2)(v) of this section but report a zero (“0” ) for the information required according to paragraphs (q)(2)(iii), (q)(2)(iv), and (q)(2)(v) of
this section

. (i) Component type. New

§98 .236(q)(2)(ii) §98 .236(c)(15)(i)(A) (ii) Total number of the survey component type that

were identified as leaking in the calendar year (“x p ”
in Equation W

- 30 of this subpart for the component
type ). Total count of leaks found in each complete survey listed by date of survey and each component type for which
there is a leaker emission factor
in Tables W

- 2, W

- 3, W

- 4, W

5, W

- 6, and W

- 7 of this subpart. Current

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

- 30 of this subpart for the component type ). New

§98 .236(q)(2)(iv) §98 .236(c)(15)(i)(C) (iv) Annual CO 2 emissions, in metric tons CO 2 , for the component type as calculated using Equation

W

- 30 (for surveyed components only)

. Annual CO 2 and CH 4 emissions in metric tons CO 2 e for each gas (refer to Equation

W

- 30A of §98 .233), by
component type Cu rrent



### 74

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(q)(2)(v) §98 .236(c)(15)(i)(C) (v) Annual CH 4 emissions, in metric tons CH 4 , for the component type as calculated using Equation

W

- 30 (for surveyed components only)

. Annual CO 2 and CH 4 emissions in metric tons CO 2 e for each gas (refer to Equation

W

- 30A of §98 .233), by
component type Current

§98 .236(q)(3) and (q)(3) (i) §98 .236(c)(16)(iii) (3) Natural gas distribution facilities with emission sources listed in §98.232(i)(1) must also report the information specified in paragraphs (q)(3)(i) through (q)(3)(viii) and, if applicable, (q) (3) (ix) of
this section

. (i) Number of above grade transmission

- distribution transfer stations surveyed in the calendar year. Number of T

- D stations monitored in calendar year. Current

§ 98 .236(q)(3)(ii) (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). New

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

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

§98 .236(q)(3)(iv) §98 .236(c)(16)(ii) (iv) Number of above grade transmission

distribution transfer stations surveyed in the current leak survey cycle. (iii) Number of T

- D stations monitored in calendar year. Current

§98 .236(q)(3)(v) (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 in the current leak survey cycle). New



### 75

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(q)(3)(vi) (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). New

§98 .236(q)(3)(vii) §98 .236(c)(16)(viii) (vii) Meter/regulator run CO 2 emission factor based on all surveyed transmission

- distribution transfer stations in the current leak survey cycle, in standard
cubic feet of CO 2 per operational hour of all meter/regulator run s (“EF s,MR,CO2 ” calculated using Equation W

- 31 of this subpart)

. Leak factor for meter/regulator run developed in Equation W

32 of §98 .233. Current

§98 .236(q)(3)(viii) §98 .236(c)(16)(viii) (viii) Meter/regulator run CH 4 emission factor based on all surveyed transmission

- distribution transfer stations in the current leak survey cycle, in
standard cubic feet of CH 4 per operational hour of
all meter/regulator run s (“EF s,MR,CH4 ” calculated using Equation W

- 31 of this subpart)

. Leak factor for meter/regulator run developed in Equation W

32 of §98 .233. Current

§98.236(q)(3)(ix) and (q)(3)(ix) (A ) (ix) If your natural gas distribution facility performs equipment leak surveys across a multiple year leak survey cycle, you must report: (A ) The total number of meter/regulator runs at above grade transmission

- distribution transfer stations at your facility (“Count MR ” in Equation W

32B of this subpart)

. New

§98.236(q)(3)(ix)(B ) (B) Average estimated time that each meter/regulator run at above grade transmission

distribution transfer stations was operational in the calendar year, in hours per meter/regulator run (“T w,avg ” in Equation W

- 32B of this subpart). New



### 76

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98.236(q)(3)(ix)(C ) §98 .236(c)(16)( x vii) (C) Annual CO 2 emissions, in metric tons CO 2 , for all above grade transmission

- distribution transfer stations at your facility. Annual CO 2 and CH 4 emissions, in metric tons CO 2 e for each gas, from all above grade T

- D transfer stations
combined. Current

§98.236(q)(3)(ix)(D ) §98.236(c)(16)(xvii ) (D) Annual CH 4 emissions, in metric tons CH 4 , for all above grade transmission

- distribution transfer stations at your facility. Annual CO 2 and CH 4 emissions, in metric tons CO 2 e for each gas, from all above grade T

- D transfer stations
combined. Current

N/A §98.236(c)(15)(i)(B) N/A For onshore natural gas processing, range of
concentrations of CH 4 and CO 2 (refer to Equation W

- 30A of §98.233). Current

Equipment Leaks by Population Count

§98 .236(r) and (r) (1) (r) If your facility is subject to the requirements of §98 .233(r) , then you must report the information specified in paragraph (r)(1) through (r)(3) of this
section , as applicable

. (1) You must indicate whether your facility contains any of the emission source types required to use Equation W

- 32A of this subpart

. You must report the information specified in paragraphs (r)(1)(i) through (r)(1)(v) of this section separately
for each em ission source type required to use Equation W

- 32A of this subpart that is located at your facility. Onshore petroleum and natural gas production facilities must report the information specified in paragraphs (r)(1)(i) through (r)(1)(v) of this section sepa rately by component type, service type, and geographic location (i.e., Eastern U.S or Western U.S.). New



### 77

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(r)(1)(i) (i) Emission s ource type. Onshore petroleum and natural gas production facilities must report the component type, service type and geographic
location. New

§98 .236(r)(1)(ii) §98 .236(c)(15)(ii) (A), §98.236(c)(16)(iv), §98.236(c)(16)(vi), §98.236(c)(16)(ix), §98.236(c)(16)(x), §98.236(c)(16)(xi), §98.236(c)(16)(xii), §98.236(c)(16)(xiii), §98.236(c)(16)(xiv), §98.236(c)(16)(xv),
and §98.236(c)(16)(xvi) (ii) Total number of the emission source type at the facility ( “ Count
e ” in Equation W

- 32 A of this subpart). (15)(ii)(A) Total count for each component type in Tables W

- 4,

W

- 5, and W

- 6 of this subpart for which there is a population emission factor, listed by major heading and component type.
(16 )(iv) Total number of below grade T

- D transfer stations at the facility.
(16)(vi) Total number of below grade metering

- regulating stations (this count will include below grade T

- D transfer stations) at the facility.
(16)(ix) Number of miles of unprotected steel distribution
mains.
(16)(x) Number of miles of protected steel distribution
mains.
(16)(xi) Number of miles of plastic distribution mains.
(16)(xii) Number of miles of
cast iron distribution mains.
(16)(xiii) Number of unprotected steel distribution
services. Current



### 78

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

(16)(xiv) Number of protected
steel distribution services.
(16)(xv) Number of plastic
distribution services.
(16)(xvi) Number of copper
distribution services.

§98 .236(r)(1)(iii) (iii) Average estimated time that the emission source type was operation in the calendar year, in
hours ( “ T e ” in Equation W

- 32 A of this subpart). New



### 79

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(r)(1)(iv) §98 .236(c)(15)(ii) (C)

, §98.236(c)(16)(xviii), §98.236(c)(16)(xix), §98.236(c)(16)(xx), §98.236(c)(16)(xxi), §98.236(c)(16)(xxii) (iv) Annual CO 2 emissions, in metric tons CO 2 , for the emission source type. (15)(ii)(C) Annual CO 2 and
CH 4 emissions , in metric tons
CO 2 e for each gas (refer to Equation W

- 31 of §98 .233), by
component type. (16)(xviii) Annual CO 2 and
CH 4 emissions, in metric tons
CO 2 e for each gas, from all
below grade T

- D transfer
stations combined.
(16)(xix) Annual CO 2 and CH 4 emissions, in metric tons CO 2 e for each gas, from all above grade metering

- regulating
stations (including T

- D transfer stations) combined.
(16)(xx) Annual CO 2 and CH 4 emissions, in metric tons CO 2 e for each gas, from all below grade metering

- regulating stations (including T

- D transfer stations) combined.
(16)(xxi) Annual CO 2 and CH 4 emissions, in me tric tons CO 2 e for each gas, from all
distribution mains combined.
(16)(xxii) Annual CO 2 and CH 4 emissions, in metric tons CO 2 e for each gas, from all
distribution services combined. Current



### 80

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(r)(1)(v) §98 .236(c)(15)(ii) (C)

, §98.236(c)(16)(xviii), §98.236(c)(16)(xix), §98.236(c)(16)(xx), §98.236(c)(16)(xxi), §98.236(c)(16)(xxii) (v) Annual CH 4 emissions, in metric tons CH 4 , for the emission source type. (15)(ii)(C) Annual CO 2 and
CH 4 emissions, in metric tons
CO 2 e for each gas (refer to Equation W

- 31 of §98 .233), by
component type. (16)(xviii) Annual CO 2 and
CH 4 emissions, in metric tons
CO 2 e for each gas, from all
below grade T

- D transfer
stations combined.
(16)(xix) Annual CO 2 and CH 4 emissions, in metric tons CO 2 e for each gas, from all above grade metering

- regulating stations (including T

- D transfer stations) combined.
(16)(xx) Annual CO 2 and CH 4 emissions, in metric tons CO 2 e for each gas, from all below grade metering

- regulating

st ations (including T

- D transfer stations) combined.
(16)(xxi) Annual CO 2 and CH 4 emissions, in metric tons CO 2 e for each gas, from all
distribution mains combined.
(16)(xxii) Annual CO 2 and CH 4 emissions, in metric tons CO 2 e for each gas, from all
distribut ion services combined. Current



### 81

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(r)(2) and (r)(2) (i) §98 .236(c)(16)(i) (2) Natural gas distribution facilities must also report the information specified in paragraphs ( r )(2)(i) through ( r )(2)(v) of this section

. (i) Number of above grade transmission

- distribution
transfer stations at the facility

. Total number of above grade

T

- D transfer stations in the facility. Current

§98 .236(r)(2)(ii) §98 .236(c)(16)(v) (ii) Number of above grade metering

- regulating
stations that are not transmission

- distribution
transfer stations at the facility

. Total number of above grade metering

- regulating stations (this count will include above grade T

- D transfer stations) in the facility. Current

§98 .236(r)(2)( iii ) ( iii ) Total number of meter/regulator runs at above grade metering

- regulating stations that are not above grade transmission

- distribution transfer stations (“Count MR ” in Equation W

- 32B of this subpart). New

§98 .236(r)(2)( iv ) ( iv ) Average estimated time that each meter/regulator run at above grade metering

regulating stations that are not above grade
transmissions

- distribution transfer stations was operational in the calendar year, in hours per meter/regulator run (“T w,avg ” in Equat ion W

- 32B of this subpart). New

§98 .236(r)(2)(v ) and (r)(2)(v) (A ) (v) If your facility has above grade metering

regulating stations that are not above grade
transmission

- distribution transfer stations and your facility also has above grade transmission

distribution transfer stations, you must also report:
(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. New



### 82

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(r)(2)(v )(B ) ( 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. New

§98 .236(r)(3) and (r)(3) (i) (3) Onshore petroleum and natural gas production
facilities must also report the information specified in paragraph s (r)(3) (i) and (r)(3)(ii) of this section.
(i) Calculation method used. New

§98 .236(r)(3)(ii) and (r)(3)(ii) (A) (ii) Onshore petroleum and natural gas production facilities must report the information specified in paragraphs (r)(3)(ii)(A) and (r)(3)(i i ) (B) of this section, for each major equipment type, production type (i.e.

, natural gas or crude oil), and geographic
location combination in Tables W

- 1B and W

- 1C of this subpart.
(A) An in dication of whether the facility contains the major equipment type. New

§98 .236(r)(3)(ii)(B) §98 .236(c)(15)(ii) (B) (B) If the facility does contain the equipment type, the count of the major equipment type. Total count for each type of major equipment in Table W

1B and Table W

- 1C of this subpart, by facility. Current



### 83

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

Offshore Petroleum and Natural Gas Production

§98 .236(s)(1)

, (s) (2)

, and (s) (3) §98 .236(b) (s) You must report the information specified in paragraphs (s)( 1) through (s)(3) of this section for each emission source type listed in the most recent BOEMRE study.
(1) Annual CO 2 emissions, in metric tons CO 2

. (2) Annual CH 4 emissions, in metric tons CH 4

. (3) Annual N 2 O emissions, in metric tons N 2 O. Report emissions of CH 4 , CO 2 and N 2 O as applicable to the source type (in metric tons
CO 2 e per year at standard conditions) individually for all of the emissions source types
listed in the most recent BOEMRE study. Current

EOR Injection Pumps

§98 .236(w) (w) You must indicate whether CO 2 EOR injection was used at your facility during the calendar year, and if any EOR injection pump blowdowns occurred during the year. If any EOR injection pump blowdowns occurred during the calendar year, then you must report the information specified in paragraphs (w)(1) through (w)(8) of this section for each EOR injection pump system. New

§98 .236(w)(1) (1) Sub

- basin ID. New

§98 .236(w)(2) (2) EOR injection pump system identifier

. New

§98 .236(w)(3) §98

. 236 (c)(17)(i) (3) Pump capacity, in barrels per day. Pump capacity, in barrels per day Current

§98 .236(w)(4) §98

. 236 (c)(17)(ii) (4) Total volume of EOR injection pump system equipment chambers, in cubic feet (“V
v ” in Equation W

- 37 of this subpart). Volume of critical phase gas
between isolation valves. Revised

§98 .236(w)(5) §98

. 236 (c)(17)(iii) (5) Number of blowdowns for the EOR injection pump system in the calendar year. Number of blowdowns per

year. Current

§98 .236(w)(6) §98

. 236 (c)(17)(iv) (6) Density of critical phase EOR injection gas, in kilograms per cubic foot (“R
c ” in Equation W

- 37 of this subpart)

. Critical phase EOR injection gas density. Current



### 84

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(w)(7) (7) Mass fraction of CO 2 in critical phase EOR injection gas (“GHG CO 2 ” in Eq uation W

- 37 of this subpart). New

§98 .236(w)(8) §98

. 236 (c)(17)(v) (8) Annual CO 2 emissions, in metric tons CO 2 , from EOR injection pump system blowdowns. For each EOR pump, report annual CO2 emissions, expressed in metric tons CO2e for each gas. Current

EOR Hydrocarbon Liquids

§98 .236(x) (x) You must indicate whether hydrocarbon liquids were produced through EOR operations

. ... New

§98 .236(x) and (x) (1) (x)

... If hydrocarbon liquids were produced through EOR operations, you must report the
information specified in paragraphs (x)(1) through (x)(4) of this section for each sub

- basin category with EOR operations.
(1) Sub

- basin ID. New

§98 .236(x)(2) §98 .236(c)(18)(i) (2) Total volume of hydrocarbon liquids produced through EOR operations in the calendar year , in barrels (“V hl ” in Equation W

- 38 of this subpart). V olume of crude oil produced in barrels per year. Current

§98 .236(x)(3) §98 .236(c)(18)(ii) (3) Average CO 2 retained in hydrocarbon liquids downstream of the storage tank, in metri c tons per barrel under standard conditions (“S hl ” in Equation

W

- 38 of this subpart). Amount of CO 2 retained in hydrocarbon liquids in metric tons per barrel, under standard
conditions. Current

§98 .236(x)(4) §98 .236(c)(18)(iii) (4) Annual CO 2 emissions, in metric tons CO 2 , from
CO 2 retained in hydrocarbon liquids produced through EOR operations downstream of the storage tank ( “ Mass CO 2 ” in Equation W

- 38 of this subpart). Report annual CO 2 emissions
at the sub

- basin level , expressed in metric tons CO 2 e. Current



### 85

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

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

§98 .236(z) (z) If your facility is required by §98 .232(c)(22) or (i)(7) to report emissions from combustion equipment, then y ou must indicate whether your facility has any combustion units subject to reporting according to paragraphs (a)(1)(xvii) or (a)(8)(i) of this section.

... New

§98 .236(z) and (z) (1) (z) ... If your facility contains any combustion units subject to reporting according to paragraphs (a)(1)(xvii) or (a)(8)(i) of this section, then you must report the information specified in paragraphs (z)(1) and (z)( 2 ) of this section, as applicable.
(1) Indicate whether the combustion units include :

exter nal fuel combustion units with a rated heat capacity less than or equal to 5 million Btu per hour; or , internal fuel combustion units that are not

compressor

- drivers, with a rated heat capacity less than or equal to 1 mmBtu per hour (or the equivalent of 130 horsepower)

. ... New

§98 .236(z)(1) and (z)(1) (i) (1)

... If the facility contains external fuel combustion units with a rated heat capacity less than or equal to 5 million Btu per hour or internal
fuel combust ion units that are not compressor

drivers, with a rated heat capacity less than or equal

to 1 million Btu per hour (or the equivalent of 130 horsepower), then you must report the information specified in paragraphs (z)(1)(i) and (z)(1)(ii) of this section for each unit type. (i) The type of combustion unit. New



### 86

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(z)(1)(ii) §98 .236(c)(19)(i) and ( v ) (ii) The total number of combustion units. (i) Cumulative number of
external fuel combustion units with a rated heat capacity equal to or less than 5 mmBtu/hr, by type of unit.
( v ) Cumulative number of
internal fuel combustion units

, not compressor

- drivers, with a rated heat capacity equal to or
less than 1 mmBtu/hr or 130 horsepower , by type of unit. Revised

§98 .236(z)(2) (2) Indicate whether the combustion units include : external fuel combustion units with a rated heat capacity greater than 5 million Btu per hour;
internal fuel combustion units that are not

compressor

- drivers, with a rated heat capacity greater than 1 million Btu per hour (or the equivalent of 130 horsep ower ) ; or , internal fuel combustion units of any heat capacity that are

compressor

- drivers

. ... New

§98 .236(z)(2) and (z)(2) (i) §98 .236(c )(19)(i) and (ii) (2)

... If your facility contains : external fuel combustion units with a rated heat capacity greater
than 5 mmBtu/hr ; internal fuel combust ion units
that are not compressor

- drivers, with a rated heat capacity greater than 1 million Btu per hour (or the equivalent of 130 horsepower) ; or int ernal fuel combustion units of any heat capacity that are

compressor

- drivers, then you must report the information specified in paragraphs (z)(2)(i) through (z)(2)(vi) for each combustion unit type and fuel type combination. (i) The type of combustion uni t. (i) Cumulative number of
external fuel combustion units with a rated heat capacity equal to or less than 5 mmBtu/hr, by type of unit.
(ii) Cumulative number of
external fuel combustion units with a rated heat capacity larger than 5 mmBtu/hr, by type of unit. Revised

§98 .236(z)(2)(ii) (ii) The type of fuel combusted. New



### 87

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(z)(2)(iii) §98 .236(c )(19)(iv) and (c)(19)(vii) (iii) The quantity of fuel combusted in the calendar year, in thousand standard cubic feet , gallons, or

tons

. (iv) Cumulative volume of fuel
combusted in external fuel
combustion units with a rated heat capacity larger than 5 mmBtu/hr, by fuel type.
(vii) Cumulative volume of
fuel combusted in internal
combustion units with a rated heat capacity larger than 1

mmBt u/hr or 130 horsepower, by fuel type. Current

§98 .236(z)(2)(iv) §98 .236(c )(19)(iii) and (c)(19)(vi) (iv) A nnual CO 2 emissions, in metric tons CO 2 , calculated according to §98 .233(z)(1) and (z)(2). (iii) Report annual CO 2 , CH 4 , and N 2 O emissions from

exte rnal fuel combustion units with a rated heat capacity larger than 5 mmBtu/hr, expressed in metric tons CO 2 e for each gas, by type of unit. (vi) Report annual CO 2 , CH 4 , and N 2 O emissions from
internal combustion units greater than 1mmBtu/hr, expressed in metric tons CO 2 e for each gas, by type of unit. Current



### 88

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(z)(2)(v) §98 .236(c )(19)(iii) and (c)(19)(vi) (v) A nnual CH 4 emissions, in metric tons CH 4 , calculated according to §98 .233(z)(1) and (z)(2). (iii) Report annual CO 2 , CH 4 , and N 2 O emissions fr om external fuel combustion units with a rated heat capacity larger than 5 mmBtu/hr, expressed in metric tons CO 2 e for each gas, by type of unit. (vi) Report annual CO 2 , CH 4 , and N 2 O emissions from
internal combustion units greater than 1mmBtu/hr,

expresse d in metric tons CO 2 e for each gas, by type of unit. Current

§98 .236(z)(2)(vi) §98 .236(c )(19)(iii) and (c)(19)(vi) (vi) A nnual N 2 O emissions, in metric tons N 2 O, calculated according to §98 .233(z)(1) and (z)(2). (iii) Report annual CO 2 , CH 4 , and N 2 O emissions from
external fuel combustion units with a rated heat capacity larger than 5 mmBtu/hr, expressed in metric tons CO 2 e for each gas, by type of unit. (vi) Report annual CO 2 , CH 4 , and N 2 O emissions from
internal combustion units greater than 1mmBt u/hr, expressed in metric tons CO 2 e for each gas, by type of unit. Current

N/A §98.236(c)(19)( ii ) N/A Cumulative number of external
fuel combustion units with a rated heat capacity larger than
5 mmBtu/hr , by type of unit. Current



### 89

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

Onshore Petroleum and Natural Gas Production

§98 .236(aa) , (aa) (1)

, (aa)(1) (i) , and (aa)(1)(i) (A) (aa) Each facility must report the information specified in paragraphs (aa)(1) through (aa)( 9 ) of this section, for each applicable industry segment, by using best available data. If a quantity required to be reported is zero, you must report zero as the
value. (1) For onshore petroleum and natural gas production, report the data specified in paragraphs (aa)(1)(i) and (aa)(1)(ii) of this section. (i) Report the information specifie d in paragraphs (aa)(1)(i)(A) through (aa)(1)(i)( C ) of this section for
the basin as a whole. (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 flare d, or used in field operations. This does not include gas injected back into reservoirs or shrinkage resulting from lease condensate production. New

§98 .236(aa)(1)(i)(B) (B) The quantity of gas produced in the calendar year for sales , in thousand standard cubic feet. New

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

§98 .236(aa)(1)(ii) and (aa)(1)(ii) (A) (ii) Report the information specified in paragraphs (aa)( 1)(ii)(A) through (aa)(1)(ii)(M) of this section for each unique sub

- basin category.
(A) State. New

§98 .236(aa)(1)(ii)(B) (B) County. New

§98 .236(aa)(1)(ii)(C) (C) Formation type

. New



### 90

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(aa)(1)(ii)(D) (D) The number of producing wells at the end of the calendar year (exclude only those wells permanently taken out of production, i.e., plugged and abandoned)

. New

§98 .236(aa)(1)(ii)(E) (E) The number of producing wells acquired during the calendar year

. New

§98 .236(aa)(1)(ii)(F) (F) The number of producing wells divested during the calendar year. New

§98 .236(aa)(1)(ii (G) (G) The number of wells completed during the calendar year. New

§98 .236(aa)(1)(ii)(H) (H) The number of wells permanently taken out of production (i.e., plugged and abandoned) during the calendar year. New

§98 .236(aa)(1)(ii)(I) (I) Average mole fraction of CH 4 in produced gas. New

§98 .236(aa)(1)(ii)(J) (J) Average mole fraction of CO 2 in produced gas

. New

§98 .236(aa)(1)(ii)(K) §98 .236(e) (K) If an oil sub

- basin, report the average GOR of
all wells , in thousand standard cubic feet per barrel

. For onshore petroleum and natural gas production, report . . . best available estimate of gas to oil ratio, ...for each oil sub

basin category. Current

§98 .236(aa)(1)(ii)(L) §98 .236(e) (L) If an oil sub

- basin, report the average API gravity of all wells. For onshore petroleum and natural gas production, report
the best available estimate of API gravity, . . .for each oil
sub

- basin category. Current

§98 .236(aa)(1)(ii) (M) §98 .236(e) (M) If an oil sub

- basin, report average low pressure
separator pressure , in pounds per square inch gauge

. For onshore petroleum and natural gas production, report
the . . .best available estimate of average low pressure

separ ator pressure for each oil
sub

- basin category. Current



### 91

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

Offshore Petroleum and Natural Gas Production

§98 .236(aa)(2) and (aa)(2) (i) (2) For offshore production, report the quantities specified in paragraphs (aa)(2)(i) and (aa)(2)(ii) of
this section.
(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

. New

§98 .236(aa)(2)(ii) (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.

. New

Onshore Natural Gas Processing

§98 .236(aa)(3) and (aa)(3) (i) (3) For natural gas processing, report the
information specified in paragraphs (aa)(3)(i) through (aa)(3)(v ii ) of this section. (i) The quantity of natural gas received at the gas processing plant in the calendar year , in thousand
standard cubic feet. New

§98 .236(aa)(3)(ii) (ii) The quantity of processed (residue) gas leaving the gas processing plant in the calendar year , in
thousand standard cubic feet

. New

§98 .236(aa)(3)(iii) (iii) The cumulative quantity of all NGLs (bulk and fractionated) received at the gas processing plant in
the calendar year , in barrels. New

§98 .236(aa)(3)(iv) (iv) The cumulative quantity of all NGLs (bulk and fractionated) leaving the gas processing plant in the reporting year , in barrels. New

§98 .236(aa)(3)(v) (v) Average mole fraction of CH 4 in natural gas received. New



### 92

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

§98 .236(aa)(3)(vi) (vi) Average mole fraction of CO 2 in natural gas received. New

§98 .236(aa)(3)(vii) (vii) Indicate whether the facility fractionates
NGLs. New

Onshore Natural Gas Transmission Compression

§98 .236(aa)(4) and (aa)(4) (i) (4) For natural gas transmission compression, report the quantity specified in paragraphs (aa)(4)(i) through (aa)(4)(v) of this section. (i) The quantity of gas transported through the compressor station in the calendar year , in thousand
standard cubic feet

. New

§98 .236(aa)(4)(ii) (ii) Number of compressors. New

§98 .236(aa)(4)(iii) (iii) Total compressor power rating of all compressors combined , in horsepower

. New

§98 .236(aa)(4)(iv) (iv) Average upstream pipeline pressure , in pounds per square inch gauge

. New

§98 .236(aa)(4)(v) (v) Average downstream pipeline pressure , in pounds per square inch gauge

. New

Underground Natural Gas Storage

§98 .236(aa)(5) and (aa)(5) (i) (5) For underground natural gas storage, report the quantities specified in paragraphs (aa)(5)(i) through (aa)(5)(iii) of this section. (i) The quantity of gas injected into storage in the
calendar year , in thousand standard cubic feet

. New

§98 .236(aa)(5)(ii) (ii) The quantity of gas withdrawn from storage in
the calendar year , in thousand standard cubic feet

. New

§98 .236(aa)(5)(iii) (iii) Total storage capacity , in thousand standard
cubic feet

. New



### 93

### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

LNG Import and Export Equipment

§98 .236(aa)(6) (6) For LNG import equipment , report the quantity of LNG imported in the calendar year , in thousand
standard cubic feet

. New

§98 .236(aa)(7) (7) For LNG export equipment , report the quantity of LNG exported in the calendar year , in thousand
standard cubic feet

. New

LNG Storage

§98 .236(aa)(8) and (aa)(8) (i) (8) For LNG storage, report the quantities specified in paragraphs (aa)(8)(i) through (aa)(8)(iii) of this
section. (i) The quantity of LNG added into storage in the
calendar year , in thousand standard cubic feet

. New

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

. New

§98 .236(aa)(8)(iii) (iii) Total storage capacity , in thousand standard
cubic feet

. New

Natural Gas Distribution

§98 .236(aa)(9) and (aa)(9) (i) (9) For n atural g as d istribution , report the quantities specified in paragraphs (aa)(9)(i) through (aa)(9)(vii) of this section. (i) The quantity of natural gas received at all custody transfer stations in the calendar year , in
thousand standard cubic feet . This value may include meter corrections, but only for the calendar year covered by the annual report. New

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

system storage in the calendar year , in thousand
standard cubic feet

. New



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### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

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

- system storage in the calendar year , in thousand standard
cubic feet

. New

§98 .236(aa)(9)(iv) (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. New

§98 .236(aa)(9)(v) (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. New

§98 .236(aa)(9)(vi) (vi) The quantity of natural gas consumed by the LDC for operational purposes , in thousand standard
cubic feet

. New

§98 .236(aa)(9)(vii) (vii) The estimated quantity of gas stolen in the
calendar year , in thousand standard cubic feet

. New

Missing Data Provisions

§98 .236(bb) , and (bb) (1) (bb) For any missing data procedures used, report the information in paragraphs §98.3(c)(8) except as provided in paragraphs (bb)(1) and (bb)(2) in this
section.
( 1 ) For quarterly measurements, report the total number of quarters tha t a missing data procedure

wa s used for each data element rather than the total
number of hours

. New

§98 .236(bb)( 2 ) (2) For annual or biannual (once every two years) measurements, you do not need to report the
number of hours that a missing data procedure wa s used for each data element. New



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### Table 1. Final Changes to the Subpart W Reporting Requirements (continued)

Final Citation

Reference Current Citation
Reference Final Rule Text Current Rule Text New, Revised, or
Current Requirement

Reporting Date for Delayed Reporting Elements

§98.236(cc) (cc) If you elect to delay reporting the information in paragraph (g)(5)(i), (g)(5)(ii), (h)(1)(iv), (h)(2)(iv), (j)(1)(iii), (j)(2)(i)(A), (l)(1)(iv), (l)(2)(iv), (l)(3)(iii), (l)(4)(iii), (m)(5), or (m)(6) of this section, you must report the information required in that paragraph no later than the date 2 years following the date specified in §98.3(b) introductory text. New



### 96